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About Google Book Search Google's mission is to organize the world's information and to make it universally accessible and useful. Google Book Search helps readers discover the world's books while helping authors and publishers reach new audiences. You can search through the full text of this book on the web at |http : //books . google . com/| Vl/( 0^ Miif.^fes HARVARD COLLEGE LIBRARY D„ii„.db,Googlc D„ii„.db,Googlc Vl/i OJ^ ^zif.-ifcs HARVARD COLLEGE LIBRARY >.,ildb,Googlc D„ii„.db,Googlc D',ii„.db,Googlc ,db,Googlc ,db,Googlc ,db,Googlc D„ii„.db,Googlc ,db,Googlc D„ii„.db,Googlc SERVICE HANDBOOK 155-MM HOWITZER MATERIEL MODEL OF 1918 (Schneider) MOTORIZED WITH INSTRUCTIONS FOR US CARE DECEMBER 14, 1918 rc-nod=,GoOglc ; ,FritmN».2at7.) ' The Connnmndiag Officer to tvlHtm this capy is tawwd intl be held personally rcaponsiUe for its sate-kecpitiB. When another ofllcer relieves him a I reecipc for it will be taken, wtakh ahould be mailed I to the CHIEF OF ORDNANCE. U. 3-. Army. Wa»h- inKton. D. C Slum. — Tbi» pamiifalet *■*—•'■* ba daateojrMl whan B of lat^ date. ^2) Digitized bvGoOgIC War Department, Oepice op the Chief of Ordnance, Wiuhington, December 14, 1918. This manual ia published for the information and government of the Army of the United States. Ity order of the Secretary of War: C. C. Williams, Major General, Chief of Ordnanet. 13) sdbvGoogIc Liat of platea 10 Table «t equivslcDts 11 Pabt I. — Dbscbiftion of Materiel. Brief deacription of the 155 MM. howitzer materiel, model of 1917 12 Cteneral description of the 166-mm. howitzer matAiel, model of 1918 13 15&4nm. howitzer 14-20 Tftble of weights, principal dimensions, etc. NomencUture of the howitzer. De«cription of the howitzer. The howitzer. The breedi mechanism. Iliie firing meidianiam. The percuBBion mechanism. Operation of the breech mechanism. To open the breech. To dose the breech . UiafiringB. Mi«rring of the primer. Ml— inp of Uie <^iar^. Table showing spare and replacement parte 21 Table diowing spare and reserve parte 22 Table showing interduuiKeability of spare and replacement parte 23 Ammunition 24-28 The |aim«r. Tlie cartridge. Common eteel shell, Mark I. G«sheU,HarkII. n steel shell, Mark IV. ilsheU, Hark XVII. Sumpnel. FiuM 28-30 464econd combination fuze, Mark I. Adapters and boosters 30-35 Point detonating fuze, Mark IV. Funt debmaring fuze, Mark III. Hand fuse setter. Packing ammunition for shipment. The 165-inm,- howitzer carriage 35-57 Table of wei^ta and principal dimenHionH. Nanendature of parts. Description ci tiie carriage. Theslei^. The cradle. Becoil and couBter-recoil mechaiuHms. Trail. Klevating mechanism. Traveraiiig mechanism. Axle tzaveling lock. The wheels. Tile shield. The road brake. (5) sdbvGoogIc Tools and a Air pump. Liquid pump. R««ervoir for compreosed gu. FresBure-gage adapter. The filling pipes. Preeeure gage. Loading barrel. Wheel mats. Drag rope. Funnel measure and funnel pipes. Sponge, etafi, and gluah brush. Rammer. Sighting BtafT. Retracting rope and tackle block. Sights ft The quadrant sight, Model 1918 (Schneider). Nomenclature of parts. Panoramic sight, Model 1917. Nomenclature of parts. Use of the panoramic sight. For direct£re. For indirect fire. The peep sight. Use of the peep sight. Sight extension. Gunners quadrant. Model 1918, Use of the gunners quadrant. Night lig^tii^ equipment. The 155-mm. howitzer canine Umber 71 Table of weights and principal dimensions. Nomenclature of parts. Description of the limber. The pole socket and pole- Wheels. The 155-mm. howitzer caisson 71 Table of weights and principal dimensions. Nomenclature of parts. Description of the caisson. The chest. Spring supporting mechanism. The road brake. The wheels. The reel. Antiaircraft machine-gun materiel 9i Table of weights and dimensions. General description. Antiaircraft machin-gun mount, Cygnet type. Antiaircraft machine-gun tripod, Model 1918. Browning machine-gun tripod, Model 1917, Staff observation car .' 9: Table of we^hts and outline specifications. Brief description of body. Brief description of the chassis. sdbvGoogIc RecoDnaissaiice car 96-97 Table of we^hte, priocipsl dimenBions, etc. Brief description. Artillery tractor, 2i-ton 97-99 Table of weights and dimeneioiiB. . Brief deBcription. Artillery tractor, 6-ton 99-101 Table of .weights and dimeuaione. Brief description. Outline epecilicatioiiB. Ammunition truck 101-104 Table of weights, dimensions, and outUne specifications of body. Brief description of ammunition truck body. Weights and outline specifications of all 2-ton chasaiB, Nash models. Brief description of chassis. A ntiaircraft machine-gun trailer 104-105 Principal dimensions and outline specifications. General description. Artillery repair truck 106-107 Weights and specifications. General description. Chassis. Body. ' ' Artillery supply truck ; 107-109 General weights and dimensions. Brief description. Chassis. Body. Load. Light repair truck, Model 1918 109-111 Weights, dimensions, etc. Brief description of chaasia. Brief description of light repair truck. The reel, Model 1909 MI 111-119 Weights and principal dimensions. Nomenclature of parts. Description. The cart, Model 1918 119-125 Weights and principal dimensions. Nomenclature of parts. Description. Oils, lubricants, and cleaning materiel 125-128 Engine oil. No. 1. No. 4i lubricant. Flake graphite. Dixon's carri^e greaae. Clock oil. Hydroline. Glycerin and water. Slushing oils. Kerosene. Miscellaneous cleanii^ mat^el. sdbvGoogIc Part II. — Instructions fos the Case, Maintenakce, and Opebatiok or tee ^ Materiel. Pege- Maneuvering the carriage IZS Howitzer in traveling podtion. Howitzer in battery position. Care and mamtenance of the materiel 129-136 Oils and greases. Care o! the howitzer. Care of the canine and other vehicles. To grease limber and caisson wheels. Care of the recoil and counter-recoil mechanism. To measure the pressure and liquids in the counter-recoil system. To add gas to the counter-recoil mechanism. To add liquid to the counter-recoil mechanism. To add liquid to the recoil cylinder. Daily inspection. ' Inetructions for repairs and replacements 136-150 Duties of the gun crew. To dismantle the tiring mechanism. To assemble the firing mechanism. Dismantling the percussion mechanism. Assembling the percussion mechanism. Dismounting the cradle traveling locks. Assembling the cradle traveling locks. Dismountii^ the sleigh traveling locks. Assembling the sleigh traveling locks. Removing a carriage wheel. Replacii^ the wheel. Removing the caisson connecting pole. Replacing the connecting pole. Dismounting the pintle. Assembling the pintle. Removing a caisson wheel. Replacing the wheel. ~ ' Removing a limber wheel. Replacing the wheel. Care of the sights. Duties of the battery mechanics. The howitzer. To dismantle the breech mechanism. To assemble the breech mechanism. Preparation of the liquid for the recoil and counter-recoil cylinders. Repairs and replacements. To dismount the firing mechanism. To assemble the firing mechanism. To dismount the elevating mechanism. To assemble the elevating mechanism. To dismount the traversing rollers. To assemble the traversii^ rollers. To dismount the traversing mechanism and axle. To assemble the axle and traversing mechanism. To dismount the axle traveling lock. To assemble the axle traveling lock. To dismount the spade. D„ii„.db,Go()glc astructioiis for repairs and replacements — Continued. ^ age. Duties of the battery mechanics — Continued. To aseeroble the spade. To dianuntle the brake rigging. To assemble the brake rigging. To remove the brake band from the caisson. To replace the brake band. • To remove the supporting springB from the caiason. To replace the supporting springs. To remove the ade bracket from the caisson. To replace the axle bracket. 'erification and adjustment of the ei^ta 151-153 .dditional tests. Verification and adjuBtment of the eights in the field. Verification and adjustment of the peep sight. nspcction by the battery mechanics 153-154 ieseral notes on caring for the materiel 154-166 ieneral information 166-158 Painting artillery materiel. Instructions for riveting. Cleaning and disinfecting of materiel affected by gas 158-160 Protection. Cleaning. Disinfecting. Protection against mustard gas. Transportation of artillery materiel affected by mustard gas. tepairs for field artillery materiel 160 Part III, — Equifmbnt. ?able of equipment *..-- 161-208 Abbreviations for motor vehicles. The units composing a regiment of 155-mm. howitzer materiel. Equipment, ndex 209-216 sdbvGoOgIc LIST OF PLATES. riaU No. Faces pace. lA. R^ht side view IB. Traveling position I. Howitzer 15 II. Breech mechaniam III. Breech mechaDism IV. Firii^ mechaniBEQ V, 21-gTaiii percussion primer 26 VI. Powder bags VII. 155-mm. common steel shell, Mark I VIIA. 155-mm. common Hteel shell. Mark IV VIIB. 156-mm. semisteel shell, Mark XVII ■ Vni. 155-mm. shrapnel, Mark I IX. 45 second combination fuze, Mark I IXA. Adapter and booster, Mark IIIA IXB. Adapter and booster casii^, Mark VB IXC. Adapter and booster, Mark VI X. Point detonating fuze, Mark IV XI. Point detonatii^ fuze, liark III XII. Hand fuze setter XIII. Leftside elevation in battery XIIIA. Left side view XIV. Traveling position XV. Longitudinal section in battery XVI. Transverse section XVII. Gage cock with pressure-gage adapter assembled XVIII. Recoil and counter-recoil mechanism XIX. Pietfln-rod lock mechanism XX. Recoil indicator XXI. Traversing rollers XXII. Traversing mechanism XXIII, Elevating mechanism XXIV. Axle traveling lock XXV. Firing mechanism XXVI. Filling valve with air pump assembled XXVII. Ab and liquid pumps XXVIII. Quadrant sight (Schneider) XXIX. Panoramic sight XXX. 155-mm. howitzer carriage limber XXXI. Pole socket (limber) XXXII. 155-mm. howitzer caisson, general views XXXIII. 155-mm. howitzer caisson, limbered XXXIV. 155-mm. howitzer caisson, side elevations XXXV. Antiaircraft machine^un trailer XXXVI. Steff observation car " XXXVII. Reconnaissance car : (10) sdbvGoogIc XXXVIII. Artillery tractor, 2i-ton XXXIX. Artillery tractor, 5-ton XL. Ammunition truck, 2-ton XLI. Artillery repair truck XLII. Artillery supply tiuck, 2-ton.,, XLIII. Li^t repair truck XLIV, Reel XLV. Cart XLVI. Location of oil holes XLVII . Tai^t for testing sights TABLE OF EQUIVALENTS. 1 mil 3.37 minutes. 1 meter (m.) 39.37 inches. 1 centiniet«r (cm.) 3937 inch. 1 millimet«r (mm.) 03937 inch. 1 kilf^ram (kg.) 2.Z046 pounds. 1 dekagram (dfcg.) 3527 ounce. 1 gram 15.432 grains. inter. 1.05671 quarts (U.S.). 1 inch 2.54 centimeters, 1 toot 3048 meter. 1 yard 9144 meter. 1 square inch ; 6.452 square centimeters. 1 cubic inch 16.39 cubic centimeters. 1 cubic foot ' 02832 cubic meter. 1 cubic yard 7646 cubic meter. 1 ounce ; 28.35 grams, 1 pound 4536 kilogram. 1 quart (U.S.) 9463 liter, 1 d^ree 17.777 mils. 1 kilogram (kg.) per square centimeter 14.223 pounds per square inch. sdbvGoogIc \ BRIEF DESCRIPTION OF THE 155-MM. HOWITZER MATERIEL, MODEL OF 1917. The 155-mm. howitzer carriage as manufactured in France is known as the 155-mm. howitzer carriage, model of 1917, and as manufactured in the United States as 155-mni. howitzer carriage, model of 1918 (Schneider). The AmericMi carriage differa from the French in having a straight shield instead of a curved one; rubber, instead of steel tires; a slightly different firing mechanism; and several other mi changes. The howitzer is mounted on a carriage having a single trail compoeed of two pressed-steel flasks. At the front end, these are connected by the axle hotudng and at the rear by a fixed spade. The carriage embodies many ingenious features designed to reduce the weight and insure stability. The recuperator is of the hydro-pneumatic type and recoils with the howitzer. recoiling the liquid is forced from one side of the piston to the other throi^h a vari&ble orifice which gradually closes until the howitzer is brought to a stop. The return of the howitzer into battery is ejected by the expansion of the air compressed during recoil. The length of recoil is constant, and in order to allow the howitzer to be fired athighelevations without digging in the trail, which is made U-shape. By sliding transversely along its axle, the howitzer is capable of traversing throu^ a total angle of 6°. Its maximum elevation is approximately 42°. It £ies a 95-pound projectile with a muzzle velocity of about 1,480 feet par second to a maximum range of about 12,300 yards. Separate loading ammunition is employed. By the use of reduced powder charges, shorter ranges are reached with steep angles of fall and with lees wear of the gun. Tts life, before relining is necessary, is about 7,000 rounds. The entire equipment is motorized and the equipment for each howitzer includes a carrii^ limber, used when traveling to support the trail, three caiaaona or auunu tion vehicles, and an equal number of caisson limbers. There are little differences between the 155-mm, howitzer carriage limber, model of 1917, of French manufacture, and the model of 1918 of United Slates manufacture- The following are the principal points in which the model of 1918 differs from the model of 1917. (a) The draft spring along the side rails is omitted and the connecting pole substituted for the horse pole. The seat for the pole is left unchanged ao that connecting poles can be substituted for horse poles on the limbers of French mai facture. Doubletree chain eyes are riveted to the side rails so that doubletrees may be attached should it he desired to use these limbers in horse-drawn batteries. (b) A water bucket holder is added on the right side near the front and the picket rope hooks are shortened so that they do not project in rear of the axle. (e) Steel-tired wheels are replaced by rubber-tired wheels but the hub boxes and wheel fasteninp vere not changed. Straps on the front rails were omitted. (d) The electric lighting equipment was changed to the United States desien and an additional bracket was added on the right side of the middle rail in order (o carry two sets of this equipment. The parts of the limbers and carriages are not entirely interchangeable, since for those manufactured in this country no French tolerances nor French gages were available. The nominal dimensions of the parts are, however, identical for the two models and it has been found that parts made in accordance with the United States drawii^ will interchange on materiel of French manufacture with very little hand fitting. (See tables on pages 21 and 23.) (12) sdbvGoogIc PART L— DESCRIPTION OF THE MATERIEL. GENERAL DE8CBIXTI0N.' (Plates lA and IB.) The 155-mm. howitzer, model of 1918 (Schneider) is of the hydro- pneumatic long-recoil type, which may be used for direct fire, but was specially designed for si^e Ere. On account of its high trajec- tory it is able to direct shells on targets inaccessible to standard 6-inch howitzers of limited elevation. This howitzer has given 'satisfactory results in actual service and has proven to be more superior than guns of similar caliber. It has a muzzle velocity of 1,480 foot-seconds and at maximum elevation of fire it attains a maximum range of 12,300 yards, the projectile weighing about 95 pounds. A maximum rate of fire of four or five rounds per minute may be attained, but heating as well as difficulty of preparing and transport- ing the ammunition by the gun crew renders auch rate impossible for more than a few minutes. However, the normal rate of fire is two per minute and the howitzer may be loaded at any d^ee of elevation. The howitzer is mounted on a sleigh and rigidly secured by means of a breech key and the holding-down band. The sleigh contains the recoil and recuperator mechanisms which permit long recoil and insure stabiHty at low elevations. When the gun is fired the sleigh recoils on bronze slides on the cradle, which is a U-shaped steel plate and rests in the trunnion bearings of the trail. Tlus howitzer may be elevated from zero to 42° by means of the elevating mechanism. The traverse is 52.5 mils right and left, the carrii^e sUding on the axle and pivoting on the spade, which prevents the carriage recoiling when gun is fired. The customary shield protects the gunners from shrapnel and flying fragments. In traveling position (Plate IB) the howitzer is retracted and locked to the cradle, the cradle locked to the' trail, the spade revolved and secured to bottom of the trail. The lower end of trail rests on the carriage limber, which is used to carry the proportionate share of the load of the howitzer and carriage in traveling position. The limber is equipped with a connecting pole for motor traction. The carriage and limber wheels are rubber-tired and considered able to negotiate any roads suitable for field artillery. ' For description ol model 1917 matfirtel see page 12. (13) sdbvGoogIc 14 THE HOWITZER. Material Alloy steel. Weight- (including breech mechaniBm) 1,230 l%.=2,6901ba. Caliber 155 mm. =6.1 in. Total lei^th 2,332 mm.-'91.8 in. Length of bore 2,177 nim.=85.7 in. Length of rifled portion of bore 1,737 mm. =68.4 in. Rifling: Number of grooves 48. Width of grooves 7.145 mm.=0.2813. Depth of grooves 1 mm. =0.03937 in. Width of lands 3 mm.=0.1181 in. Twist, righthand|Unifonn, one turn in 25.586 calibers. Powder chamber: Diameter 158.75 mm. -=6.25 in. Length 339.85 mm.-13.38 in. Volume 6,965.75 cu. cm. =425 cu.in- Obturation Pad. Firing mechanism Percusaion. NOHBNCLATUBE OF THB HOWITZEB. (Property claaslficalion, Class IV, division 3.) The battery personnel is directed to use the following Domeocla- ture, giving piece marks and drawing numbers, when referring to parts of the howitzer in reports, correspondence, etc. Tin, Name o/ part. T^^ s; Class. Divi- sion. ber." HowiUtT. 1 1 i 8 8 s 8 g IB IS 18 18 8 18 Ltrtlng eye lociiik screw Hepilalingplate Breech meOaniiTR. Block carrier Block carrier assembling stud ISSS:;!SSai!l:S™i-:::::::::;;:::::::::: Block carrier lever calch Breech block machbieU Obturator apiodle M.* S3 ,db,Googlc Snail mnAfiRitiR— Continued. Obturator spindle sprlne ObturalorapindlevantDushiiiE. . OpeistlDgleTer... OpwattnEleretlnDdle Operating Isrer handle key OperMbtglararliaQdl* nut OpeKtlii(lBv«r hftndle iteere . . . OperMfnglsvarliaitdleaiainE. . OperatlnaleTarlBtoh OperaUngltTtrlatcIiplug... Raeklock Rack look spring SplDdleplug Spindle plug gasket Spindle spring [rant eeat . . . Spindle spring rear seat ... . Split ring llront) Firtnf latdHtniim. nechanism block hand le . . . Firing mechanism block latch bolder. . . FtrlDgntechanlsmblocklstcIiliolderscr Firing macbaniam lilocklatcb handle. . . Firing meobanisinbloAlBtdi spring... B -„— _— lionring key aigingrlTet . . . Hrlng mechanism housing key spring atud . . , Firing mechanism safety plunger Firing niHAanlamsalety plunger spring Firing ^n Firing jdn guide Firing pin housing Firing pin housing luliling scrav Firing pin spring Periosaon hammer Percussion hammerlock bolt Perciisslon hammer lock bolt spring Percussion hammer lock bolt spring set screw Percussion hammer ^ock housing Percussion hammer lock housing screw.................... Percussion bammer lock bousing set screw Percussion hammer operating shaft Percussion hammer operating shaft collar Percussion hammer operating shaft housing Percusslonhammer operating shaft housing control scren.. Percuwlon hammer operating shaft nut Percussion hammer shaft plunger Percussion hammer shaft plunger spring Primer seat [dug DBSCBIFTION OF THE HOWITZER. THE HOWITZER. The howitzer, Plate I, consists of a tube and jacket. The jacket is shrunk over, approximately, the rear half of the tube and screwed to it by a short thread near the rear end of the tube. The rear 179395—20 2 sdbvGoOgIc 16 end of the tube is prepared for the reception of the breechblock. On the right nf the jacket &t its rear end are two lugB which recave the hinge pintle of the operating lever. A flat seat with two trans- verse slots in machined on top of the jacket at the rear end for receiv- ing the counterweight. The counterweight is securely fastened to the jacket by nix screws, and two lugs which engage the slots in tiie jacket. The bridle is fitted to the under side of the jad^et near the rear end and held in place by four screws. The breech key passes through tho hridlc and holds the howitzer in its seat on the slei^. On the under side of the jacket just forward of the bridle seat are seven square threads which engage corresponding threads on the sleigh. A holding-down hand which encircles the jacket at its for- ward end also secures the howitzer to the sleigh. f)n the top surface of tho counterweight are two mdiel-ralver leveling platea. Vertical and horizontal axis lines are cut on the breech and muz- zle faces. A line showing the actual center of gravity with the l>reech mechanism in place is cut on the upper side of the jacket marked C. of G. The name and model of the howitzer are stamped on the left side of the jacket just below the counterweight. The name of the manufacturer, year of manufacture, serial numbw of the howitzer, and tho weight of howitzer, including the breech mechanism, are stamped on the muzzle face. THE BREECH MECHANISM. The breech mechanism, Plates II and III, is of the plastic obturator, interrupted screw type, having four plain sectors and four threaded sectors. The block can be locked with one-eighth of a turn. Two of the plain sectors are relieved to permit the breechblock to enter the brooch recess. The breechblock is screwed into the block car- rier and rides on the hub of the latter. The block carrier is hinged to the right side of the jacket by means of tho pintle hinge of the operating lever, Tho pintle hinge is fitted at the lower end with an operating lever collar and detent. The dead weight of the breech is earned by the block carrier hinge plate. The block is rotated by means of a rack which engagee teeth cut in the upper surface of the block at its rear end. The rack is actuated by a lug on the under side of the operating lever which engages a slot in the rack. The rack lock is located in the inside face of tho block carrier. When the breech is tightly closed this lock bears against the breech face of the howitzer and is forced back against the rack lock spring, leaving the rack free to move sdbvGoOgIc 17 As the breech starts to open the rack lock is forced up by its spring and locks the rack, preventing further rotary motion of the breech- block. The operating lever is provided with an operating lever handle which is kept in its raised position by the operating lever handle spring. When the breech is closed and locked the lower portion of the operating lever handle engages the block carrier lever catch. When the breech is fully open the operating lever latch which ex- tends through the operating lever, engages the operating lever catch and holds the breech in that position. The obturator spindle is of the mushroom head type. It passes through the center of the breechblock and is screwed into the front end of the firing mechanism housing, which fits into the hub of the . block carrier. The obturator spindle is prevented from tumii^ by the firing mechanism housing key, which is held in place by the firing mechanism housing key spring. A vent for the passage of the primer flame is drilled through the center of the obturator spindle. The obturator spindle bushing is screwed into the front end of the obturator spindle and the obturator spindle plug into the rear end, the latter forming a chamber for the primer. The obturator spindle spring bears against the firing mechanism housing and the breechblock, keeping the head of the obturator spindle tightly against the gas check pad. The gas check pad or plastic obturator is composed of a mixture of one part asbestos and three parts nonfluid oil, contained in a canvas covering. The pad is protected by the front,, rear and small split rings. A steel filling-in disk is placed between the gas check pad and the breechblock. THE FIRING MECHANISM. The firing mechanism housing, Plate IV, is provided with a firing mechanism safety plunger which is forced by the firing mechanism safety plunger spring against the inside circumference of a circular boss on the face of the breechblock. When the breechblock is rotated to its locked position, the plunger slips into a notch in the boss and permits the entrance of the firing mechanism block. When the breech is unlocked, the lower end of the firing mechanism safety plunger extends into the firing mechanism housing and obstructs the entrance of the firing mechanism block. This safety device makes it impossible to unlock the breech while the firing mechanism block is in place or to insert the firing mechanism block while the breech is unlocked. The firing mechanism block is provided with a handle, and screws into the firing mechanism housing. The primer seat plug is screwed into the front end of the firing mechanism block and is provided sdbvGoOgIc 18 with a notch into which the primer is inserted. The firing pin guide is located just back of the primer seat plug and forms a guide for the fi^ng pin as well as a bearing for the firing pin spring. The Bring pin housing is screwed into the rear end of the firing mechanism block and held in place by the firii^ pin housing holding screw. The firing pin passes through the firing pin housing and the fuing pin guide and is forced to the rear by the firing pin spring. The firing mechanism block is provided with a flange at its outer edge in which a slot is cut to receive a projection on the front of the per- cussion hammer. This prevents the hammer from striking the flring pin when the firing mechanism block is not screwed home. The tiring mechanism block latch is located on the outer face of the block carrier and prevents the firing mechanism block from being unscrewed accidentally. The firing mechanism block is interchangeable with the firing mechanism blocks used on the following cannon: 155-mm. gun, model of 1918 MI (Filloux). 8-inch howitzer, model of 1 9 1 7 (Mckers Mark VI and Villi) ■ 240-mm. howitzer, model of 1918 and mod^l 1918 MI (Schneider) . THE PERCrSSION MECHANISM. The percussion hammer, Plate II, is carried by the percussion hammer operating shaft which is journaled in the percussion hammer operating shaft housing. This housing is secured to the breech face by means of a dovetail projection which fits into a slot, cut across the entire breech face just below the breech opening. The percussion hammer operating shaft is fitted with a lever at its right end which receives the blow of the firing mechanism striker when the lanyard is pulled. The percussion hammer shaft plunger and spring are located in the percussion hammer operating shaft housing to the left of the hammer. When the breech is open the plunger is forced up by its spring, thereby causing a projection on the plunger to engage in a recess in the operating shaft, locking the shaft so that the hammer can not be operated. When the breech is closed the under side of the block carrier strikes the beveled head of the shaft plunger, forcing it down and thus unlocking the mechanism. The percussion hammer lock bolt is screweosing the propelling charge is a nitrocelhdose powder consisting of multiperforated cylindrical grains. The weight of the cha^;e vuiea slightly for different lots of powder, but is approxi- sdbvGoOglc mately 8 pounds. The weight is detennined from the acceptance test of the powder lot, which also gives the standard miizzie velocity of that particular lot of powder. COMMON STEEL SHELL, MARK i. The common steel shell, Plato VII, has a total length of 22.7 inches unfuzed and 24.58 inches fuzed. It has an ogival head struck witn a radius of 6f>.47 inches, and is fitted with a copper rotating hand forced into an undercut scat 3.23 inches from the base of the shell. The bottom of the hand seat in the shell is roughened to pre- vent slipping of the band. The base of the shell is solid and is fitted with a base cover consisting of a leaugb the annular spaces shown in the illustration and out the vents (b') in the closing cap. The percussion element of the fuze as shown in the plate consists of a centrifugal percussion plunger (3) and an ordinary percussion primer (r). The centrifugal plunger (q) is provided with a slot to receive the firing pin, which is mounted on a fulcrum and locked in the unarmed position by twl force. Two restraining spring housings hold the entire plunger and its housing away from the primer during handling, transportation, and flight. On impact, if the time mechanism has not already oom- pletely functioned, inertia carries the percussion plunger forward, firing the percussion primer. The vents («) in the fuze body con- duct the flame from the percussion primer to the magasdne (p). The bottom closing screw (u) closes the percussion plunger recees and keeps the powder in the magazine. The muslin washer (v) ia shellacked and held by the brass washer (w). A projecting lip it crimped over the edge of the washer from the underedge of the bottom closing screw. A hermetically sealed waterproof cover of sheet brass is provided for this fuze. The hood passes entirely over the fuze and is attached to the shrapnel head. It should be stripped off before attempting to set the fuze. The safety wire should also be removed before setting the fuze and replaced if the round is not fired. If the safety wire can not be replaced, the round should not be carried in ammunition chests or roughly handled and should be fired at the next firing. The 4S-sectind comhination fuze, model 1907 M. — This is essentially 1 the same as the Mark I fuze just described. | ADAPTERS AND BOOSTERS. ' Adapter and hooster, Mark III-A (Plate IXA). — The high, explo- sive shells Mark I and Mark IV are fitted with the Mark III-A adapter and booster. The function of this booster is to ^ve a suffi- - criz^d^vCoOglc D„ii„.db,Googlc 32 In the Mark VI adapter and booster, shown in Plate IXC, thi adapter consi»t» of a Ht«el hushing with tapw threftds on the exteriw, ftesignod to make a gas-tight joint with the shelL The head ii hexagonal and is fitted on the interior with a bushiog threaded to receive the fuze. A fuze suctket holder and fuze aocket close the upp«i end of the booster and are held in place by the fuze bushiog. The booster cashing consists of a drawn-steel tube welded to thi lower end of the adapter. It ia tilled with high explosive loaded undai pressure. The Mark VI-B adapter and booster id similar in all respects to tbi Mark V-B, shown in Plate IXB anp« pin , xtotn*dIa|loAnuc>— ' — - Aicletnvalnigloek Aik tcavelbu lock bearliw, InchidAie— Bolls (laby SI nun) conplete, coiuliting of— ■nCUm Split plna (O.oa by 1.2S inchea) . . .xle traveling lock boi Includluc— Axle travoUng lock busMng. Lock boKCOTor. Brtl»a4by37nun.) Including— Nut9, ciown (14 nun.) Split plna (O.llG by 1^ inches) .. . Axle trayellng lock lever , Including— Plunger,., Plunger apring... aieere. Srtidle .xle travslbig lock lever atops. . ■ Inchidmg— Nats, crown (16 mm.) Split pins {IU»t by 1 ,G inoliM) . . :a«lmT«l — — '■-^" A^dttraraLnf lock apllt pin (0.W by las inebes). . . laaBTalinB lock apiing. . . irfetB.cca BnkehcBd aeft)'. bichidlng— Brake sboe Spiinecarer Indudlng- Knob. Spring core Brake head (right). Incloding — Brake shoe Including— Spring cover screw Including—- Brake handle Brake screw atop Brake acrew aiipportlng ntit Brake screw waaber Nut I06E Including— I Pinion Shan bushing 102H Ptailan abaft bracket boils _ lOSD Inelnding— i NuM, crown (Mmm.) Q170A.. Spilt pins (O.IM by 1.251ncbes) SprlM cover 71T Inelodlng^ I Knob I TIE.^... Spring cover screw ' lOIE ElevMJng aecment unit, complele, consisting of— EleVBlingaegmentOett) I lOlB ElavaHngsegment (right) i lOlA Elevating segment Iiansom (lower) ! IIMA Elevating segment transom (middle) lOeB Elevating segmeni transom (upper) I lOSC lyGOOglC TitmealpKt. Dr>«iiig. ber. ^. SS: Num. bet. 108D ?iV«.^::::: ■ 3 30 30 1 1 S 3 41 a .? 2 3 Elevating sw™"nt unit, complete, eonalsllni! of— t'on. IndndlM- i«o lar.::::: Including- ISI:::::;:: lOW ElerotLng w«Tn ^bih 10716 ffi Iniludlng— 107 iSi;::::::: 3 3 1 I 3 1 >. 3D 3 1 30 3 41 41 •i 41 41 41 « '"i!"«^:"::::::::::::: HITFA ,Ineludliig- wsf::::::: HOD Ifc::::: ISS:::::::; 108C ^:;:::;:: lOSE lOlD sock nlve ndng Oan oook ytlvt ntm OJAvtNo. S OMketNd.S OMkatNo. 10 t tlo. 8 sluid 0«sk«No. 7 Guket (Mb; 100 by Iiiiin., copper). . Oaakflta (11 4 by 118 by I mm., ooppet). rnc^lng— Grease cop plugs OrettM eup springs Tilling plug gasket .'.;;: Pln(Sby M mm.) Recoil piston rofl Includtag- Recoll pifltnn liner Inrluding- Piston linor screws RbcoII piston rod nut... Including— Pin (fl by SI mm.) Rcpoii piston rod plui; Throttling ring [ncTudlng— Throttling ting sore* E«oil BtUfflQg bojt GaakelNo. 3 OMkelNo.fl ObtoratM (Innor) Obturator (oatar) Oil bole plu( Piston rod rasket follower Includtng — BcTBW (A by Bmm,, haadleas)... Piston rod lubricator Pl9l«n rod lubricator gland Piston rod peckijig sent Piston rod packing spring. ......... Piston rod parkinB sprlrc toniprBsi Piston rod rubber follower Piston rod rubber pad ,db,Googlc Blf^, romplBte, o _. _ _ Iteci^l stuffloc box— Contliiiied. PlsUm rod spring ease (Inner)... iDCluding— SCTBW(*br3.5niin,) Piston rod Sfntan efK (outer) . . Screw {< by fl mm., headless)... iflsl number plate Ineluding— Screws (* by 8 m .J couateraun Front slide screws . . . Rear slide screws Sletgb slide (left).... Sleigh sUdedlgbl)... Sleigh traviji^'l(lck"(i(jt j.' '. '. IncludUtg— Plunger spring Sleigh traTOllnn lock (right) Ineludl:^— Plunger Plunger spring Spindle Spade, complete, consisting ol— Spade brace (left) Spade brare (rl^t) Spade brace, diagooal (left) Spade brare, di^nal (right).. Spade plate Spade tniveUne books Screws (IB by 38 mm.) Spade Isteb, complete, consistliig ot— Including— Latfh handle Spade lateb (right) Spade latch shaft Pins (« by 42 nun., drive Spade ^lalt Including— Pin (a by 70 mm., driven).. e housli^ bushing (left) e houaii^ bushing (right) e housing collar (left) housing collar (right) e traveling lock ci^h (left) . . . . e traveUng lock caleb (right). . . Barrow (asteoiivg pi Chain rings Chsia eyes iw fastening (right Iror Spring cover Including — Sprlnjmvira; criz^d^vCoOglc .„u^. Bpting ana screw Brake alialt bearing mpport (lover left) — Brake ahaft bearing euppcart (lower right). . . Brake ahatt bearing snppDit (apperlett) Brake abaft bearing sn^Kirt (upper right) . . Chain {trail bolt) Iztchidi^— Chain rivet. 1 Padlock No. 8W Chains (tnmntm caps) ..................... Including— Ch^neyes Chain rings Spring cotterB Chains (wheel mat bracket) Chain rivets CWer hingBS (female) Depreaalon stop Including— DepieaBlon stop bolts Including— Xuls, crown (H mm.) S^ltpload.S 1^1.% inches)... . JBSD.. . JB5J... Indamng — Nuts, crown (10 mm.) Split pins (0.i»3 b; I inch) . Screw (10 by Mmm., countersi Induding— Nut, crown (10 mm.) " litpiiKO.Or ■ - ■ '■ Thrust braclcet screw.. , Iflh wheel . . jlevating worm abaft brscl Filler plate (hand R^e base) Filler plale (left) traversing gear case. . Fillet plal* (right) Iraversmg gear case. Fixed spade Inchidliig— iDcIuding— Orease cup plugs. . Float Fmnt tnuuDm... Oaskat rings ,db,Googlc 46 Tnll.nKDplFU-. cnnidiilinitot-roMlnued. itukd mum h«w Inrlodliil— Hum] ipllcr plo Brmrndll^ IVmin.) BplUpkiui.O.IShy alnehn) Inilnirt iOD plile luuunlon pbtF Ltlch ihall nrtnc Inrtudliw- Dowtl <1I mm., rfTcted) Latch ■princ boll Nut, crown (10 mm.) Bpllt pin (O.on br 1 Wb) Loadlmt ranniwT iHtenlni {im) LawUnK ranmur tUtenlDg (rtiht) Lock hwtni (1^) Inchuflng-' Pin («bj!fe mm., driven). Bprlns ooTcr ! InchidlDg— ockbeuimnrKlit).... Inrlodliig— Inehidlni^ PlD Sponge staO raatenlng baee Including— Pin (S ^a mm., riTOted) Sponge ataff hatenlng hinge Staff laatenlng key Inchidlng— Key apring Inchidlng— Screw (4 by 7 1 Strap (long) a * rriz^d.v Google Tiawbie. OBS,. D)yi- Blon. Num- ber. Trail «nnn)el« nmalstiiig Dt-Cantinued. 3 3 3 3 3 3 3 I I 3 3 i 3 B 3 41 41 41 « 1 41 41 41 41 41 8 4 4 4 41 41 Trail boT angle (left),;".!'.!"'.";!"!!;!!!!;!;;;;!.";;; aga»:::::::::::::::;::::::::::::::::: Inoludliw- :ma!;:;;;;! Tral fluKerBliKdrCB (upper lettt «.* Tib hanfllB faMpniW! (rlRht) S3TI S7E Tnii reinHrw (inner ls(t) Tnii re(nforoo (innct riRJit) % ^^ bsa;;!!!!!! G^™™W locluding— B7K Including— Indudi^;!^ 73H ^™™toSag- 73H L7989&-20 5 sdbvGoogIc Nam* ol pari. Pl»nutrk. Dnwtnt. Clan. .to,' ^ Trair comMrtf, eanililliK of-CaHlniwd. Truimko bsarln; -CnotlDuval. 41 1 (1 1 SenwdowBl 41 Incfolii- ^^ u a IS IS 30 30 3 3 3 3 3 ! 3 3 3 u 2KT 3Kr IncliMJing— JBBT iSfl:-::::: tarludSng^ K;::-::: ,,Inciudiii- QBXA - SSE •• '''"'b^ Nt*7° P*"'"'"' ""Piew, mnii-tliii o(- iToi.:;:::::; 170H ima:::::::: 109B 170B ;::::::: 170E Itok:;:::::; ITOC 167*::'.:;::: ISTB 1«7D „ 41 41 ^Im^ludiDE- •' i ' / IncludliiB- ,/ 41 4 4 Including— Splndlfl 71L... sdbvGoogIc Traversing mecliuiism, complete, conslatiueof-^ Bal 8Ti[leBprlDgcompr«9sore InFludliie_ ScUt pinsfO.Jia by S.2Stiioh8S) DostCOVBTS Dust-cover ^asluts RandwlHel sfaaft ptnjona KDller-boj. oOYora SbB't-beBrine locks Screws (n by 7 mm, countsisunk head) . . TliniC... . PB4BD.. . PB38D.. Linrh idnnda PBaTM. . lineh plnlatplios PB37B... LInch pinlatrli pins PB37C... Spokes PB«A... Spoke shoe (lolnt) PB1SB... Spoke shoe (iQlemieiliate) PB48A... Spoke shoe plates PB4gD . . Spoke shoe rivets PB48F,... Tires I PB«F... Tito bolls ! PB48F... IncluiUnc— ' Nuts (0.375 inch) I PB«H.. Washers (0.«7 Inch) PB48K.. Washers (Inner) PB37N.. Washers fouler) PB37L... sdbvGoogIc DESCBIFTION OF THE CABRIAQB. The 155-mm. howitzer, model of 1918 (Schneider), Plate XIII, is of the hydropneumatic, long recoil type, in which the howitzer ia allowed sufiioieat length of recoil to insure stability at low elevation. The lei^th of reooil is not shortened for high elevations. For the purpose of description, the carriage is considered as com- posed of the following groups: Sleigh (including recoil mechanism), cradle, trail, traveling lock, elevating mechanism, traversing mechan- isin, wheels, road brake, and shield. ; THE SLEIOn. The sleigh contains the recoil and counter-recoil mechanism and serves as a support for the howitzer, being secured to it by the breech key and the holding-down band. The recoil, counter-recoil cylinders, and two air cylinders are bored in the sleigh and form the reooil mechanism. The ends of the recoil and counter-recoil cylin- ders are attached to the cradle and when the howitzer is fired the Bleigh and howitzer recoil, sliding on the cradle slides. The holdii^-down band is anchored on either side to the front band clips, which are secured to the sleigh. Grooves are cut under- neath the two top edges of the sleigh, and are lined with bronze liners, Plate XXVI, known as the sleigh slides. These liners slide t OB the cradle clips and guide the howitzer during recoil. Five ■ ' longitudinal cylinders are bored in the sleigh, the two upper cylinders :■■ running about one-third the length of the sleigh forming air tanks L and are closed at the front end by the air tank heads. The left air ^ tank head is provided with an openuig in which the gage-cock body . 18 assembled, Plate XVII, Apressuregagemay be assembled through [ an adapter to this gage cock for ascertaining the pressure in the : counter-recoil system. The gage cock Li also provided with a pointer, which roisters the quantity of liquid in the system on a scale pro- vided on the air tank head. The two lower cylinders, Plate XVIII, extending the full length of the sleigh, form a housing for the recoil Mechanism, the right cylinder being the counter-recoil cylinder and l^e lelt the recoil cylinder. The small equalizing cyliruler in the . center of the sleigh, extending only a short distance, is closed at ™e front end with the filling valve, through which air or liquid is wtroduced into the system. TTie oounter-recoil cylinder is connected by a passage to the right *"■ tank and also to the small equalizmg cylinder, the latter being poimected to the left air cylinder, thus maintaining equal pressure "' both air cylinders and hi the counter-recoil cylinder. The counter- ^**oil cylinder is closed at the rear end with the counter-recoil sdbvGoOgIc 52 \ cyliitclpr head and at the front end with the stuflfuig box, throu^ which the oountor-recoil rod and its piston moves. The retxHl cylinder is closed at the rear end with the recoil cylinder head laA. at the front end with the recoil cylinder stuffing box, through wtucts. the recoil piston rod operates. This rod is hoUow and serves as ck. buffer ohiiinl>or lor the buffer rod, which ia securely screwed to th^ recoil cylinder head at one end, the other end carrying the counlw— recoil valve. The recoil and counter-recoil rods are fitted with Ql^ piston rod nuts on the front end wfiich engage th» piston rod locl« plate, Plate XIX. CRADLE. (Plalea Xin, X\-I, XX, XXVI, and XXIX.) The cradle is a steel U-shaped plate reinforced by several transom^ and supported by the trunnion bracket, elevating segment brackets a and in traveling position by the cradle band which engages Ul^3 | cradle locks secured to trail. Along each edge of the cradle is rivet«c3 ' chps on which the howitzer recoils when in action. The sleigh traveL — ing locks are mounted at the extreme ends of the cradle and used t^c^ lock the sleigh to cradle when the howitzer is in tra/eling position— ■ The cradle is mounted on trunnions on the carriage, and by mean^^ of elevating segments geared with the elevating mechanism may b^* inclined at various firing angles. When carri^e is traveling th^^ rear end of the cradle rests on the cradle traveling lock, thereb^^ relieving the elevating mechanism of the weight of the howitzer . sleigh, and cradle. The left trunnion of the cradle is bored out to receive the aigK ^* and bracket. The shoulder guard is located on left side of th-^^ cradle just back of the trunnion bracket and protects the gunnft^^^*" from the recoiling parts. The firing mechanism is located on tJi^^ right side of the oradlc and provided with a safety device whicfc^ prevents the piece from being fired when the piston rod nuts ar^^" not engaged by piston lock. The recoil indicator (Plate XX) is located just hack of the trunnioK^'^ bracket on the right side of the cradle and consists of a steel which is adjusted by means of a nut so that the pointer bears againa a scale engraved on the edge of the sleigh indicating the length (^ J recoil. The front end of the cradle is covered by the cradle hea^* and provided with an opening through which the preasure-gag^^ adapter may be assembled to the gage-cock body. The lower hal^^ of the.front end of the cradle is closed by the front transom, formin^^ a guide for the piston-rod lock which is operated by means of a level ' * When this lever ia lowered the lock plate moves to the right, releaain^^ the piston-rod nuts. When lever is raised the lock moves to th^^ left, locking the nuts in firing position. The locking device is pn^ sdbvGoOgIc 53 I by the cradle front cover which holds the lever in firing on when closed. The filling valve is accessible through the t bottom cover located on the bottom of the cradle to the if the front transom. The" pump bracket is located on the left if the cradle near the front. EECOn. AND COUNTER-EECOIL MECHANISMS. (Plate XV and XVIII.) len the howitzer is fired the recoil mechanism exercises its re- ig influence by means of a liquid which is obliged to pass through ifice whose size dimishea as the movement proceeds, thus check- le recoiling mass. The recoiling movement of the gun actuates e same time the counter-recoil mechanism, which acts on the er-recoil liquid and forces it into two reservoirs, thus further ressing a gas therein contained. When the recoil movement is I the expansion of gas forces the counter-recoil mechanism back battery," and the recoil cylinder again exercises its retarding nee to prevent a too rapid return and shock. The normal recoil 175 inches (1.305 meters). Len the piece is fired the howitzer and sleigh move to the rear, 3cod and counter-recoil rods, which are held by the piston-rod remaining stationary. The liquid in the counter-recoil cylinder, iximately 22 liters (23.25 quarts), is thus forced into the air iers, building up a pressure sufficient to return the howitzer to ry. The liquid in the recoil cylinder, approximately 11.25 8, is forced through the orifices in the recoil piston rod and then gh the throttling ring. The tapered buffer rod, which is attached 3 recoil cylinder head, moves through the throttling ring, grad- closing the orifice, thus keeping the pressure constant as the ity of recoil is reduced. As the buffer rod moves to the rear junter-recoil valve is opened, allowing the liquid to pass freely the buffer chamber. As the gun returns to battery the buffer closes, forcing the liquid to pass through the small clearance id the valve, thus absorbing the energy of counter recoil. TEAIL. (Plates XUI, XIV, XXin.) B trail is built up of steel plates forming the body of the carrif^e 3 composed of two flasks held together by top and bottom trail i. The front part of the trail is open between the flasks to it recoiling of the howitzer at high elevations. The trunnion Qgs are riveted to the top of the flasks, and the axle and travers- :rew housing are located between the flasks toward the front end ing a brace for the trail. sdbvGoOgIc I 54 The axle housing is lined with a bronze bushing at each end, throu^ which the axle passes. The traversing roller boxes are located oneM each side of the trail just above the axle-forming housings for traversing rollers. These rollers are stradled by forks which cany the weight of the carriage through a system of Belleville springs. Under the firing load these springs compress, and the weight is transmitted directly to the axle. The cradle-lock bearings are located one on top of each trail fiask and form bearings for the cradle lock which engages the cradle n band when the gun is in traveling position. The trail box is built into the trail and forms a convenient pli for carrying tools and spare parts. The extreme rear end of the trul is fitted with a float which prevents the end of the trail from sinkiiig into the ground when firing at high elevation. The spade is mounted on the spade shaft which passes through the bearings in the fixed spade. It is held in either of two firing positions by means of tbe spade-latch shaft, which engages either of the two half bearings ffli the ends of the spade braces. Tbe spade-latch shaft is operated by a handle on the left spade latch and can be rigidly held at an angle of 20° from the verticd for firing on soft ground or at an angle of 40° from the vertical for firing on hard ground. When traveling the spade is turned into a positicA parallel to the bottom plate of the trail and held by the spade latches which engage the spade traveling hooks. The spade-latch shaft held either in firing position or traveling position by the latch-shaft spring, which is riveted to the underside of the trail top plate and bears on the flattened surfaces at the center of the shaft, The^handspike is mounted on a base, which is located on top d the extreme rear end of the trail. In firing position the handspike is held rigid by turning the fulcrum, which forces the foot under the handspike pin. In traveling position the handspike is turned back on the trail and held in position by operating the fulcrum, which forces the top end of the handspike under a catch provided for that The lunette is riveted to the underside of the float and forms * pintle bearing when the carriage is limbered. The fifth wheel is alw riveted to the underside of the float and bears on the trail beaiinff of the limber. The name plate, giving the number of the carriage, model, name of manufacturer, year of completion, and initials rf inspector, is riveted to the top trail plate. In all reports and correspondence the carriage is to be deeignated by the number and model given on the name platp. ; sdbvGoOgIc D„ii„.db,Googlc AXLE TRAVELING LOCK. (rku xxn'.) The axle traveling lock is a device employed to relieve the travci ing mechanism from unnecessary stress when the carriage is i traveling position. When the carriage is prepared for travdii the traveling lock engages a series of square grooves cut in the ceaiU of the axle. The lock is operated by an eccentric on the end of tl traveling lock shaft which is controlled by the lock lever fixed t outer end. The lock lever may be placed in two positions markf "to travel" and "to fire," by means of its handle which is providi with a spring plunger engaging the traveling lock catch. In ord to properly lock the carriage in travehng position it is necessary i traverse the carriage to the center position on the axle, thus pfl mitting the locking device to engage the grooves cut in the cental the axle. The axlo lock is bolted on the front of the axle housing and lock operated by a cam on the end of shaft which extends through a bet) ing in the left trail plate and is fitted with a handle. The plungt of the handle engages either of two catches, one locking the howitH in firing position and the other in traveling position. When the cai riage is in traveling position the lock is forced down by means of i spring ongoing the teeth in the middle of the axle. When the hoT itzer is in firing position the lock is lifted by means of the cam a» that it clears the teeth in the axle, permitting the carriage to b operated at will. THE WHEELS, (I'lBtes I-A. Xrn-A.and XV,) The wheels arc built up of wooden spokes mounted between 1ml boxes and hub rings and bolted in place. The other ends of fl» spokes are attached to the felloe by means of spokes shoes. The stoe felloe band is bolted to the felloe. The base band is shrunk on to fli felloe band and rubber tires are mounted on the base band. The inner and outer hub liners are forced into the hub box an' form the bearing surface for the axle. The wheels are held in plac by the axle caps, which are put over the end of the axle and held ii place by linch pins. Leather dust guards are placed between &. hub boxes and the axle cap and between the hub boxes and the axl collars. The axle caps are provided with ring holes, to which ,th drag ropes may be attached for towing by man power. The lincl pins are held in place by linch-pin latches, which are hinged to th linch pins at one end and tied with linch-pin fids to the other. Fo dimensions and weights of wheels see page 35. sdbvGoOgIc D„ii„.db,Googlc TOOLS AND ACCESSOSIES. A complete list of tools and accessories' is given under "list of equipment pertaining to 155 mm. howitzer regiment" on page 161 of tliis book. Battery mechanics are directed to use only the tooh proTided by the Ordnance Department in making all repairs and i necessary adjustments. Mechanics and others are cautioned against using tools or ax;cessories for any purposes other than those for whidi they are intended. When tools and accessories are not in use they should be stored in their proper place or receptacle provided for same. The air pump is furnished for the purpose of charging and main- taining the necessary pressure in the counter recoil reservoire. When in operation it is attached to a bracket on the carriage by means oft screw clamp and connected to the reservoir by the filling pipe. Ill pump will operate gainst a pressure of 400 to 600 pounds per sqiun inch. Power is applied by means of a hand lover connected by paralU links and a cross beam to the upper end of the piston operating through a gland in the top of the cylinder. The piston is fitted withi special packing at its lower end and operates in a cylinder larger in diameter than the body of the piston. The action of the pump is as follows: As the piston moves up air is drawn through the intake valve filhng the space below tin piston. As the piston moves down the intake valve closes and tha air is forced through the piston valve into the space around tbi piston and above the shoulder. This constitutes the first st^e it compression. On the up stroke of the piston the air is forced oit through the check valve into the counter-recoil system, constitutiq the second stage of the compression. At the same time more «ir is taken in through the intake valve. The filling pipe connection should be covered with the provided connection cap when pump is not in use. The pump should be k^^ free from dust and grit and all parts should be well oiled. IjOss »t compression may be caused by small particles of dust on the valv^ seats preventing the valves from closing. An assembling sleeve is furnished with the air pump which shouts be slipped into the top of the cylinder before inserting the pistoEa The piston should never be assembled without this sleeve as tiB= sharp edge of the cylinder counterbore will probably ruin the packii>=-J When operating the air pump for a long period a few drops of c=* should be squirted in from time to time through the intake valve hciV turning the pump upside down. If the pump becomes too hot ^■ will undoubtedly burn the piston packing and score the cylindw- gilizedbvGoO^lL / DiBiiodb Google THE FILLING PIPES. (I-tat»X3n-I.) The filling pipe is used to connect the counter-recoil reservoirs with the air or liquid pump or with the compressed gas reservoir. It con- sists of a flexible metallic hose of special construction to each end of which arc brazed brass couplings. A check valve is provided in one coupling which is screwed into the valve body on the sleigh by means of an adapter or swivel. The filling pipe 13 designed for a working pressure of 2,000 pounds per square inch, but care must be taken not to put sharp bends in it as this may cause it to leak. The connections at each end should never be removed from the pipe; however, the short swivel nut may be unscrewed to permit inspection of the check valve. The filling pipe consists of a flexible bronze hose 1,800 millimeters in length, lined with two layers of rubber tubing and covered with galvanized steel braiding. The inner hose couplings are brazed to the hose. The pressure passes around the knurled end of the sleeve into the outer hose coupling and acting upon the outer surface of the tubing keeps the joints tight. Each outer hose coupling is provided with a swivel nut held in place by the swivel wire. One hose coupling is marked " reservoir " white the other is stamped "sleigh." Tbb couphng marked "sleigh" is provided with a check valve which is acted upon by a check-valve spring and held in place by a valve follower. The filling pipe also includes an adapter for connection to the sleigh, consisting of the swivel nut, swivel, gasket, and nipple. It is important that the coupling marked "sleigh" should be attached to the sleigh and the coupling marked "reservoir" to the reservoir couplings. At each end of staff is attached a male coupling, enablinfl the sponge head, rammer head, or slush brush to be connected taS use. The sponge is used to wash out the bore of the howitzer vitb the proper soda and water solution, and when covered with burik]) it may bo used to apply or remove slushing oil. When not in use U should be covered with the sponge cover and secured to left side of trail in receptacle provided for it. The slush brush consists of i carpet sponge of closely woven pile or nap, rigidly fastened to i hickory staff, and is used to coat tho rifling grooves of the howitsoi with grease during fire; also to apply slushing oil when necessary. The rammer hoad is composed of a cylindrical bronze body, whicJ is a loose fit in the bore of the howitzer. It is fastened to the endo a metallic staff tho same as used in connection with the sponge aa* slush brush, A rccoss is cut in tho front end of the rammer head t*- receive tho nose and fuze of the shell. The rammer is used to remo^ the shell from tho bore when for any reason it is desired not to fire i immediately. To do this, insert the rammer in the muzzle end aa' with a gentle pat loosen the shell, taking caro not to harm the hat SIGIITIKQ STAFF. Sighting staff is composed of a wooden rod and telescopes into piece of tubing, the slide ring clamping tho tube to the rod and steel point on the end of the tube permits the staff to be stuck in tb ground. The sighting staff is used as an indirect aiming point fo the panoramic sight. BETHACTING ROPE AND TACKLE BLOCK. The tackle block and retracting rope arc used for bringing tb howitzer into battery and traveling position. When preparing tc action the hook of the rope is hooked to fastening on the trail ai» swivel hook of tackle secured to the lifting eye on the counterweigl*- When force is applied the howitzer is drawn into battery positio' sdbvGoOgIc When preparing for travel, the swivel hook of tackle is secured to her lifting eye of counterweight and retracting rope hook fastened either right or left eyebolt on back of shield, and in like manner ) howitzer is brought into traveling position, then held by means the traveling-lock mechanism. SIGHTS. rhe following sighting equipment is carried with the 155-mm. vitzer materiel, model of 1918 (Schneider): Qtiadntnt si^ht, model of 191S (Schneider). Panoramic sight, model of 1917. Peep sight. Right extenmon. Gunner's quadrant, model of 1918. Night lighting equipment. THE QUADRANT SIGHT, MODEL OF 1918 (SCHNEIDER). Phe quadrant sight, model of 1918 (Schneider), is mounted on the ; trunnion of the carriage, both in traveling and in action, and luld not be removed by the battery mechanics. The principal tures of the quadrant sight are: The cross-leveling mechanism, the vatuig mechanism, and the angle of sight mechanism. rke cross-leveling mechanism principally consists of the leveling rm, leveling stop, antibacklash spring, leveling clamp, and cross els. By means of the cross-leveling mechanism the sight is itight level transversely when the mount proper is out of level, is insures that azimuth readings and settings will be made in the le horizontal plane. Phe bracket fits into the trunnion on the left side of the carriage i m provided with four tenons which engage slots in the face of ! trunnions keeping the sight in proper alignment with the bore the howitzer. The bracket is screwed in place by bracket bolt; ) front end of the body of the quadrant sight fits into the cylindrical rt of the bracket and is held in place longitudinally by four lugs. Fhe body of the sight is rotated by the leveling worm engaging the rm wheel segment cut on the under side of the body. The outer d of the worm is provided with a knurled handwheel by means of lich the leveling mechanism is operated. The leveling stop, secured bracket, engages slot in the body, thus limiting the angular motion the body in either direction. The rear end of the cylindrical part ■ the bracket is split and provided with a leveling clamp by means I which the body may be locked in position after it>-has been leveled. 3d by Google 64 TliP cross Irvol is localofi on llip roar pdge of the sight shank uid sorvrH thi> ^iiiicr in tlctormining the level position of the instrumenti The lovrl vial is a glaiw tube, rlosed at both ends, and partiaQi fillod with a litjuid consistinf; of 40 per cent alcohol and 60 per att ctlior, a small hubl>I<> rcmainiiif; in the tube. Graduations are etctiid on the circumforonfo of ttio tuhc to indicate the central position d( thi> hubblf. Thr vial is held in a level-vial tube, the ends b^ wrappctl in paper and sot in plaster of Paris. The knurled croB- iovol <-()vcr fits over thi> holder and, together with the level-vial tdM, are held in l>laco by the erosw-levcl eape, which close the ends of thi hokier. When elosed, the cover serves as a protection for the vial. The fln'nting mfchai,itmi consists principally of a sight. siitiHlt, elevating worm wheel, antibacklash pinion, elevating wonn, elevating- worm eceentric, elevating scale drum, and scole-dnun housing. The sight shank is a curved har, the upper end of which is provided with a T slot for receiving the ohank of the panoramic sight. Ill lower curved part of the shank is formed into an annular rack, passiof through the body, held in place hy the body cover. Hie shank sliikl in the boblTCtfve)a -IciiuiiiK lm_ Prlnn bolder oonr. Pilam holdBT oov«r MIC1 Dowel pin fW richl shu ETBlaiBBen. Afdumutlo eyt lena. En lam D«ll rstalnbig at Klevstloawtnii. Worm plunger spring pi Bibow ntalnlng lanw. .Xibow. >^Betiaile. Admntatig Bald hot. makelsUvtrpifoe. Bnpporl nlabilnc ring. Sapport letalnhur ring h Ailmoth drcle hood acrow. Ailmuth circle support. AstBDtta drde. Bprlng plate tor ulmutb drde. indid silver strip. OUeetlve lena cell. IMIectian locking plate. Lower reflecting piiiin. Locking spring. Field lens cell ratalnlng ring. molhw «nlng. Advtnnatlc objeetlr* ten Open tight. Throw oat lavar. Rotating prism holder. Flnlm shift lllcn»neter Index. Sapportlng ilMve for rotating prlmi. Plnfcns la rotating prisms and rotating Rotating prism bUdar M Eleradon mtcmmeter. Btoprlng. Priflu support, ftmt. Index kniU) washer. mpii^Hng. Wedge. Btnibgca Bearing so Rotating L._, ^.^^ .../^u. Prlim support, back. RotatlnglHad prism siting. Lomr^nectlng prlim luldn USE OF FANORAUIO SIGHT. (Plata ZZIX.) Set index mark on angle of site pointer opposite 3 and micrometer ttt zero. Release clamp, and by rotating cross leveling worm, brii^ CtDSB level bubble central^ and then reclamp. On the panoramic ■ight set azimuth scale at zero, azimuth micrometer at zero, microm- ^tw index at zero, elevation scale at 3, and elevation micrometer fcnob at zero Correct for deflection in azimuth by first turning azimuth mimtim- cter until required deflection is opposite fixed arrow pointer and tlea bring arrow on micrometer index to zero on azimuth micrometer oj means of azimuth worm knob. Elevate the quadrant sight ^'bank unto the required reading is obtained on the elevation scale. Elevate and traverse gun until cross hairs of panoramic sight are On to»,»* sdbvGoOgIc Cross level sight and sot scales of azimuth nii<»oint. The deflection thus read from the azimuth scale and azimuth micrometer is the deflection angle in mils. The angle of site. — Set angle of site pointer at 3, and micromete zero, and bring elevation level bubble central by turning eleval handwheel. Then elevate or depress the upper prism of the pt ramie sight until the horizontal cross hair is on the target. As point .3 on the scale is zero elevation, all readings must be figi above or below this point. The reading thus figured is the angl site in mils. The open sight on side of rotating head is used to obtain prelimiii direction of sight. In turning azimuth angles greater than 100 mils, the throw- lever may be pressed and rotating head turned to nearest divisio: even hundreds desired. Each unit on azimuth scale represents mils. A sighting staff is provided for use as in indirect aiming poin cases where a natural jioint is not available. THB PEEP SIGHT. The peep sight is an open sight consisting of a peep-sight supp cross wires, and an eyepiece or peep sight. The lower end of support is fitted into a shank, which fits into the socket in the of the quadrant-sight shank. The cross wires are mounted in sdbvGoOgIc cross-wire ring at 90° to each other and 45° to the horizontal. The cross-wire ring fits into the cross-wire holder and is held in place by the cross-wire retainer. The cross-wire holder is screwed with 32 threads per inch into the holder sleeve, and the latter is screwed with 30 threads per inch into the peep-sight support. These two pieces are preTented from turning hy two split pins passing through the support at right angles to each other. The threads allow a vertical adjust- ment. The peep-sight guide is riveted in place in the rear end of the sup- port, its edges fitting into the T-slot in the bottom of the peep sight ; or eyepiece. A German-silver scale, graduated in equal divisions each representing 10 mils, fits into a groove in the rear end of the peep-sight guide. The scale is held in place by two screws, the holes in the scale being elongated to allow for adjustment. An index ia marked on the back ei^e of the peep sight, and the latter may be "■'. traversed by means of the peep-sight screw. This screw is mounted in the support and held in place by a nut on the right-hand end and I by the peep-sight-screw handle on the other. The handle is held in ±.' place by the handle-locking screw. A micrometer sqale is engraved h- on the handle, graduated in hfdf mils. USE OF THE PEEP SIGHT. The use of the peep sight is limited to direct fire only. The peep n^t is mounted on the shank of the quadrant sight and is inter- y the lunette pins. The limber is so designed that it can he transformed into a horse- Irawn vehicle by removing the connecting pole and connecting wle hinge plate and substituting the horse pole, pole socket, double fee and singletree. The wheels are of wooden construction, 1,240 mm. in diameter ind rubber tired. The spokes axe mounted between the hub box ind the hub rii^ and held in place by carriage bolts. The hub wx is lined with the outer and inner hub liners which bear on the ude. An oil hole is provided throu^ the hub box and inner hub iner for supplying grease to the bearing surfaces. The inner end if the inner hub liner bears on a leather washer which is placed inside Kf the dust collar. The dust collar fits over the axle collar and both >ear against the side rails of the limber. The hub is held on the ude by the axle cap, a leather washer being placed under the cap io prevent lateral motion of the wheel. The linchpin passes through die axle cap and axle, holding the former in place. The outer ends tf the spokee fit into the spoke shoes, which are riveted to the felloe. Hie felloe band is shrunk around tJiie felloe and held with tire bolts. [he base band on which the rubber tire is mounted is shrunk on he felloe band. sdbvGoOgIc THE IW-UU. HOWITZ ER 0AI S8ON, KODEL OF 181S (SOHNEOER). WEIGHTS AND PRINCIPAL BlHKWaiOHB. Weight of one caiBeon without equipment unloaded 1,066 kg. =2, S45II Weight of tools and ftcoeaMiri«B 'M. 3 kg. =■ 102 D Weight of cainon completely equipped, unloaded 1,102 kg. —2,4471 Weight of S powder contoinera 20 kg. • 441 Weight of powder cairied 58. 2 kg. = 12B0 Weight of ihellB carried 605 kg. —1,3301 Weight of caieeon completely equipped and loaded 1,793 kg. «3,MII Weight behind tractor, two caimona completely equipped andlooded 3,686 kg. =7,8981 Weight on ground under each wheel of rear vehicle, equipped and limbered, unloaded 549 kg. <=1, 19711 Weight on ground under each wheel of frost vehicle, equipped and limbered, unloaded 674 kg. =1,26111 Weight on ground under each wheel of re&r vehicle, equipped and limbered, loaded 8,806 kg. —1,93011 Weight on ground und«' each wheel of front vehide, equipped and Umbered, loaded 911 kg. =2,00411 Weightof reel caisaon completely equipped and unloaded.. 1,140 kg. — 2,504 D Weight of reel caisson completely equipped and loaded 1,822 kg. —4,00611 Over-all length of two caissons 4,730 mm.— lS6i] Widthoftrack 1,630 mm.= 60i Diameter of wheels 1,530 mm.— 60 i Turning diameter of two caissons 6^ 6 m. — 18 f Note.— The w«ght of the caisson equipped widi horse pole is practically the m as the caisson equipped with motor pole. NOHENCLATUILB OF THE CAISSOIT. Froperty ClssslflotlioD.— (Class IV, Dlvldonl.) The batter; personael is directed to use the following nomenclstn: giving piece marks and drawing numbers when referring to parts the caisson in reports, correspondence, etc.: Apixm, complfite. consisting ot— Apron hlligce (malB) Door handle bars Door tumdle bas«s WUignuts Wing unt piia Wln£ Tint pin wuhem ......... le brackets, e> ,db,Googlc Name or part. Piece mark. Drawing. .» ClaiE. Dirt. Nnm. ""BSS'£Sgi'iar""'™ ■"«■«"""■ BB2TA QEA IB 3D IS 30 30 IS 15 aKB III 1 aKB 2KB 1 ii 3KB aKB „. bb»e:::::; bbmb";.:::: §S=T:::::: g ■^S^':^'^::::::;::::::::::::::::::: IneluiliiiB— 1 IS IS 30 15 SO IB 30 30 15 li '5 1 2 2KB lii ii i aKB 2KB 1 2KB 2KH aKH 2KB 1:;e BBsic":"::: bbsof:::::: Brak^'md 31 IndadtM- 31 , 1 llalS-.::;:: 31 \ 1 Rni t™A(4.33iby3.5inclieB, A-LMBtohea) 27 "^.iXiV.r""-'^"'''"'*-""""''"'^- BBZTC ■^^fflir" *' •■" ""'"■ *-■■""""' '"'**^ ! Oisaoa prop, CDmp]et«, Rmditlng aS^ tii;;:;;: ig;;;; gj»» ! i 1 'nSfe-'sss;?'''' ,^^W_r QflXA g SS::::: 2*B QaK ,inodel.otlW 2 • Not nqolred IOC tauwn equipped irtth TM ,db,Googlc CbMt, romnleU, caubUiw of— CmtlnuHL Dnknhaftlinckrt (light) I iTic'ludlnf — RrBke nhslt Incket ntalorce (rl^t). .. Hrftcoatippofi (left) Brace support Irteht) Bucket hnldnr tody ip lttsl«wr, style No. 10... Cheat ancle (rear) Chest boay (lower) ■Cbeit body (upper) tChcst body (uppiw) Chest stlttener angle Cheat stop (left) Chest stop (right) Dlaphrainn»Fwat«s(A>-II.61Slncbee).. DtephrsKm separattn (A— e.dStlncbeat... Dlaphraiim separates (A- I.SIS Inches) . . . DIaphngm stop (upper) Door hlngn {Irmale) (loirar dooi) Door hlnices (female) (upper door) Door hi nn* rivets Door prop guide (left) Door prop guide (right) Fillet Trtatp (left) Filler plate (right) Front diaphragm (lower) Front diaphragm (upper) Fuie hoi stop Fine boi support (left) FuM box support (right) Oulde bracket (front) (left) Guide bracket jfronlSfrtriit) Handrail shanks Handrail shank fillers :mplement taetenlng^ complete, jFa^tenlng levers... 1 Fastening levernl n ; Fastening le itenlnS spring)! Ing flllBrs (hatchat) (left) ent fttsCenlng, complete, cooEdstiiig of (for Fastening base, Fa."tenlng' Fastening Frpin.":; Fastening spring . . Spring flllpr (wrenciij Intormodlate plate (lower) Intermediate plate (upper) Lantern bracket complete, consisting of Lantern bracket bodT,,- Lantern bracket bottom Lantern strap fasteners Lantern strap fastener ■. . , Lock bar beartag (left) Lock bar bearing (right) '""■■—' Wring (fett) , Iring(right) liaphragm counter stop iQcluding— Chain rings Chain rivets. Lunette bracket Uiddle diaphragm (lower) Locking le' Looklr-'- (One only required for caisson equipped with reel, m Liooglc Dlvl- Nam* Name plaU- ■ OlJcBDEiitdedetO-... on can guide (right)... Piok pocket Pick real 115. type A (O.SSSby l.Tfllnonea) InDluding— BpUt pins (1.25 by O.TB iooh). . . Pintle spring buWb Tsp bolts (0.375 b J I inoh) TBpbolt(n.37Sby0.08inDh) •Polo bracket (left) - Including— ■ . . *Pin, type A (0.81 by 3M2 inches, inches). Inolnding— »Splii pins (0.16B by 1 inch) *P01e bracket (right) Projectile luhBE Rear flftpgragm (Wwor) Rear platfl SeataupportB... Segment r^ck. . . Strap fastener, style No. Straploop,stvleNo. 1... Spanner bracket plate . . Tnoludlng- Strap tastbui' , ° Strap loop, styl( "Bpring catdies Sttaplastehers, style 1 Including— Strap loops, style *Strap fasteners, style 1 SpiP^i Kwse diaphragm pins . . . i.Sinch). W r«iifih holder - ■ Chest door |lowBr),complele, consisting ol- Apron hhigDS (Ismale) (innet) Apron hlnge(rmnale) (outer left) Apnm hinge (lemBle) (outer rlgtit) (Seat door (tower) Door angle (Wwor) Door hinees (male) Door stlnener (IniMr left) Door a liflener (inner tight) Door stifleim (outer) Pin5,lJpeA(0-3'lSbyl.asinolies) lioladlng— SpUt pins (O.IM by 0.78 incbl Pins, type A (0.8(18 by 1.76 inches, A-1 Including— Spill pins fO.iaS by 0.75 inch) • Not Inquired lor oaluon equipped with reel, model at 1817. sdbvGoogIc ■). conyilMv, coiuiHtlnfi o(— IJoor inRle I upper | blngW" (male) j OBIC... Nut, 01 lilsltj.. in.SjInch)... Bplil pin (I) i-uor prop slud li iruk Including— Split pin (n.IZS by l J&inchc4i. . . Door St iOcDPr iMi ) DoorstilTeiimrlRht) noot stlllmer (iDirvr lelt ) Door stillener (loiror rlghtl . Q6UA.. liiJBSi)." .Iqsua.. er (middle).. Including— Fool rest support (lelt ) 9lr»p tostenera. alylo No. S . . . tncludlng— Straploops.styleNn. 1... IS I ZKQ ' 15 ' 2KK ; Wingni Wingni..,. . — Connecting pole, complele, inoludlng— Body Bon (0.«35 by 4.437 Inohes) - Caisson prOp co " ' Key bearing... Lunette.. Lunette beanng . Lunette plus wheel guard Includluj; — Including Piophoolc PfOp eye poll Including— Split pInTo.ias by 0.75 liuh).. . Prop hooS boil SpLl plnjo.; 12Sbj0.7Slneh) KiludiDg— Door prop's liding rlVets" LooUnE meonauism, eomplele, consisting or— Look bar (left) Lockbartrlgbt}... LmU^ hioge pin. , . (lowBri, complete, conkating oi— -—IS (lower). . , b^VBidowi aptu^^n 111 . . . . Z/KMedlaphragni (upper ),DOinplel«,aonslstiiig 01— "'Bp&Bgm spai — ' ■"■- — >"-•" _.., „ _) spaopr (upper botcom) (left) . . . Diaphragm .^paoer( upper bottOQk) right).. Dlaphragra spacers (upper top) Loeso diaphragm halves (upper)........... ,db,Googlc . niitle,com|iletfl,0dn3iiaiigor— ' '^ntle bearing Iialvaa Bolts {OJWbT 2£ InObM). . LoA w»^jM (O-OU Inch}... FlntlelB.._ Flntl«I*tGhpill..___ niitlelatdii[Bliw... H at.n bv 2.812 i Nut, cnnm (D.TMiuAO ^ipln (O.IM by 1.5 inotKa). . . foleiadcei ' Caintiis mtnn — Guldabol£ , 1 (O.S71HiiGti) Mnti, ovwn (0.7MD Htu') mm. common steel shell (high explosive), Mark I; l.'So mm. common steel shell (gas shell), Mark II; 155 mm. shrapnel for howitzers, Mark i; 155 mm. common steel shell (high explosive), Mark i"\' (obus allonge or French long shell) and semi-steel shell, Mark XVij. However, only one type of shell can be carried in the same compartment at one time. When canning either common steel, gas or shrapnel, the loose dia- phragms are placed in position after the projectiles are inserted in the projectile tube. When the doors are closed, carrying either common steel or gas shells, the door stiffeners bear against the bases of the projectiles holding them in place. With shrapnel the edges of the flanged holes in the loose diaphragm bear against the rotatii^ bands of the projectiles and prevent them from moving. When the caisson is being used to transport common steel shells Mark \\, the loose diaphragms are placed inside the body of the cabson next to the front diaphragms. When the doon are closed the door stiffeners hear against the bases of the projectiles holding them firmly against the loose diaphragms. The door stif- feners also bear against the powder containers, holding them in place. Two foot rests are attached to the upper chest door and hand rails and grip straps are provided on top of the chest. The out- side of the chest is provided with implement fastenings for the following tools and accessories: On the rear plate, the shovel, pick, lantern, wrench, spanner wrench and two folding buckets; on the left side, the hatchet; and on top, the axe and paulin, the latttf forming a seat when folded and strapped in place. Limber blanket straps are also provided on top of the chest for carrying the blanket rolls of the battery personnel. The picket ropes are strapped under the left-foot rest. Supports are provided for the fuze box in the left side of the caisson between the upper and lower intermediate plates, and for the oil can in the right side. Fastenings are also provided on top of the chest for carrying the connecting pole, and on sdbvGoOgIc D„ii„.db,Googlc THE BOAD BRAKE. The caisson is provided with a brake mechanism of the drum type, Plate XXXIV. The brake drums are momkted on the hob boxes of the wheels and held in place by carriage bolts. Hie brake- hanger brackets are mounted on the under side of the axle bracketa and held in place by the axle bracket clamp screws, forming support! for the brake hangers. The brake bands are lined with Raybestos liners and are pinned at one end to the brake hangers. The tree ends of the brake bands are pinned to the brake-rod levers which an pivoted to the brake hangers. The brake bauds are prevented from dragging on the drums b}' band guides riveted to the upper sides d the bands and anchored in the band clips which are pinned into the axle brackets. . The lower ends of the brake-rod levers are attached through th« brake rods to the brakc-shaft levers, adjustment being provided for by means of brake-rod ends which are screwed to the brake rods. One brake-shaft lever is made integral with the brake shaft, tlu other is mounted on the square cut on the left end of the brake shift and is held in place with a split pin. The brake-hanger bracketo are stiffened and braced by brake-hanger bracket braces, the front ends of which are pinned between the sides of the cheet and the brace supports. The brake lever is riveted into the brake-lever bearing and tliB latter is mounted on the brake-lever pin. The pin is forced and pinned in the brake-lever bracket which is riveted to the ciusaon body. The brake-lever rod is pinned at the lower end to the crack on the brake shaft and, at the upper end, to the brake-lever bearing- The upper end of the brake-lever rod is screwed into a brake-rod end, allowing for adjustment in the length of the rod. A s^;nient rack is mounted on the s^ment-rack bracket which is riveted to the caisson body just above the brake-lever bracket- A brake-lever catch mounted on the lever engages this rack anil holds the lever in any desired position. THE WHEELS. The caisson wheels are of wooden construction, steel tired, and 60 inches diameter. The spokes are mounted between the hub boJ and hub ring and held in place by carriage bolts, which ^so hold tiu brake dnmis in place. The outer ends of the apokes fit into spokt shoes which are riveted to a felloe made up of four sections. TTn I tire is shrunk around the felloe and held with tire bolts pasaiig through the felloe. The hub liners are forced into the hub boxes and the wheels an held on the axle by wheel fastenings^ The wheel hook bi sdbvGoOgIc lie mounted on the hub boxes and keyed to the hub rings. The wheel hooks fit over and revolve on these bushings. The hub bands ire screwed to the hub boxes, lock washers being placed between the wheel-hook bushings and the hub bands. The hub caps are screwed to the axle and locked to the hub bands by the hub latches. Wheel oil valves aire mounted in the hub caps, and held closed by iprings. Small rivets in the sides of the valves enable them to be locked in open position. THE BE EL. One caisson in each battery is equipped with the Keel for Caisson, model of 1917. This is a band operated reel for the transportation ind handling of telephone wires. The frame is built up of two flanged steel ends and two sides, riv- eted together with four angle-iron comer reinforces and riveted to the top of the chest. The reel is built up of two flanged steel spool flanges mounted on a shaft. The spool flange hub is riveted to the right spool flange and a basswood spool hub, made in two piceces, is mounted between the spool flanges, the latter being held together by four tie-rods. The spool may be operated from either side. The crank on the right side is mounted on the shaft and is attached to the right end of the frame by a chain. When not in use the crank can be removed and placed in the crank fastenings. The crank on the left side is crainected wit^ the spool through an 18 to 40 gear reduction. The cnmk is attached by a hinge pin to the crank-shaft collar, which is lunmted on the outer end of the crank shaft. The latter passes through a bearing in the left shaft bearing and is fitted with a driving gear on the opposite end. The driving gear meshes with a pinion on the shaft of the spool. By removing the safety-chain split pin tlie left crank can be turned back and placed in the crank rest when not in use. Chains are provided on either end of the frame for locking tbe cranks when not in use. The reel is also fitted with a brake for controlling the speed of rotation ndien allowing wire to run out. The brake lever is pivoted on the brake-lever pin, which is riveted into the left shaft bearing •ad operated by a thong attached to the lower end of the lever. ^ polling the thong the upper end of the lever is made to drag on Uie inside of the rim of the left spool flange. A brake-release spring, attached to tiie upper end of the lever, and a lug on the left shaft lietring, keeps the brake open when not in use. A name plate riveted on the rear side of the frame gives the name reduce to a minimum the various sudden shocks which are impost* upon the moving parts. sdbvGoOgIc gg^ 1 i I : 179685-80 9 Digitized bvGoOgIC 92 The clcvatiii}; screw is oj>«Tnt»' cap serves as a bearing for the gun arm as well as a eoveriiig for the gears. Means for obtaining aixwrate elevation of the gun is provided by an elevating semw and nut whieh eonnccta to the rear of the gun adapter and the worm-wheel arm. Tlie following inaehine guiiH are applicable to this mount when tk» | adapter |>c(-uliar to eacli gun is aHe 64 per cent. Chaani Wfifcht on rear tirea (without load) 46 per cent. Gtdm weight 'raparity load) 7,1501b.— 3,250 kg. Load weight nn front lirea 20 percent. IxmI weiRht on roar tire* 80 per cent. Gkms weight on front tirea 31 per cent. Groan wciitht on rear tiree 69 percent. Overall len^h of rhaseia (without body) 205 in. •■5,210 mm. Overall wiUlh of rhasaia (at wideet part) 61iii.'-I,650 nun. rhaaaia wheel laae 140iii.'»3,HOiniIi. PermimibJc Inadinp Rjiai^fi back of driver's seat 97 iii-=2,470 nun- Width of frame (outaidc (limennion, widest part) 34 in. =865 mm. Height of rear end of frame from ground (empty) 33.76 in. =85.7 mm. ru _ . I. _■ 1 /riebt 60 ft.=18.3 meters. Diameter of turning cirrlel, ,. ,, ,, ,„ _, " llett 45 ft."13.75 meten. Tread of wheel a 56 in. =1,910 mm. Road rlearance under front axle (lowest point) 10.75 in.=273 nun. Road rlearance under rear axle (lowest point) 10 in. =254 mm. Length of ataff observation car, overall 205 in. =5,320 mm. Width of bwly 69 in.=l,755 mm. Height of body, overall (inrluding top) 97 in.»2,462 mm. Weight of body (without eftiiipment) 1,990 ]b.»905 kg. BRIEF DE.SCRIPTION OF THE STAFF OBSERVATION CAB BODT. The staff observation car is provided with a nine-passengor touring type body, modol 1918, which is mounted on a l-ton truck chuw, White, Model TEB-0. The chassis is mounted on 36 by 6 inch pneumatic tires and an extra one, inflated, is carried on a spare lim on the left running board. Tire inflation is secured by means of M engine driven tire pump mounted on the transmission case. The car is powered with a four-cylinder block-cast L-head engine, bore 4.25 inches; stroke 6.375 inches. This engine is provided with an Eisemann high-tension magneto and a double jet carbureter sup- Hod with hot air. The engine is cooled by wat«r circulated through a cellular type, spring-mounted radiator by a centrifugal water puB^' The body is made up in the form of a lai^e touring car and po- vided with four doors, all of which open except the one on the left front when the spare tire is carried thereon. The front and rear seats comfortably seat three persons each, and the tonneau la provided with two auxiliary folding seats which are so designed that when raised they form a single seat on which three persons may comfortably sit. A one-man type of folding top is provided and a rain vision wind shield, to which the front end of the top is fastened. Straps aW also provided to secure the front end of the top. The sides of thectf are provided with clear vision side curtains which open with the doors. The front and rear seats are spring upholstered, and >" exhaust radiator is placed in the floor of the tonneau. Two laiS^ accessory chests, supported on rear extensions of the frame side rfti" 3d by Go Ogle 96 Controls. — Left-hand steering gear, with goar shift lever at ri{ of driver. Emergency brake at driyer's left. Spark and throt levers mounted on sector in steering wheel. Ignition groimd swb located on side of control box on dash. Carbureter choke on left A of dash. Lighting switches, speedometer, and ammeter in confi box on dash. Accelerator pedal located on base of steering-gear a umn. Clutch and brake pedals located from left to right, re^>ectiTd Lighting. — Two electric headlights, two oil-electric side lamps, o; electric tail lamp, electric dash light. Starting. — Two-unit, Leece-Neville 6-volt system. Generator hi ground return. Motor is double wired, and equipped with a Bendi drive, engaging with the flywheel. Switch is under driver's heel. Battbrt.— The starting and lighting battery is a WiUard tjp STR4, 6-volt, and of 128 ampere-hour capacity. A complete description with instructions for care, maintenona and operation is contained in the "Handbook of the Staff Observi tion Car, Model of 1918," Ordnance Pamphlet No. 1964. EEOONNAISSANCE CAB. (Plate XXXVIL) The reconnaissance car as supplied to raiments of 155 mm, ho* itzers, motorized, consists of two units: Reconnaissance body, mod' 1918; 1-ton truck chassis, White, TEB-0. Further ioformation concerning these units will be found in Or nance handbooks "Reconnaissance Body, Model 1918;" "1-T« Truck Chassis, White, TEB-0." {No. 1972.) WEIGHTS, PRINCIPAL DIMENSIONS, ETC. Rated load capacity (body allowance plua nomml load) 1 ton=l,040 kg. Body we^ht allowance 1,500 lb.=862 kg. Chasais only 3,850 lb. =1,750 kg. Oil, water, and gasoline 190 lb.=86.5 kg. Chains 69 lb.— 31.5 kg. Toolkit 371b.=16.8kg. Ghaasis weight on front tirea {without load) 54 per cent. Chassis weight on rear tiiea (without load) 46 per cent. GrosB weight (capacity load) 7,150 lb.-3,250 kg. Load weight on front ties 0. 78 percent. Load weight on rear tires 99.22 per cent. Gross we^ht on front tires 27 per cent. Gross weight on rear tires 73 per cent. Overall length of chassis {without body) 205 in.=5,220 mm. Overall width of chaasis (at wideat part) 61 in. =1,550 nun. Chassis wheel base 140 in. =3,560 nun. Permissible loading space back of driver's seat 97 in.=2,470 mm. Width of frame (outside dimension, wideat part) 34 in. =865 mm. Height of rear end of frame from ground (empty) 33.75 in. =856 mm. ^Jright 60 ft.=18.3 meters. 45 ft.=13.7 meteiB. Diameter of turning circle^, cr.iz.d.vC00glc 97 Treaii of wheels M in. = 1,422 mm. Road clearance under froDt axel (lowent point) 10.7!i in. =273 mm. Road clearance under rear axel (lovrest point) 10in.*'2M mm. Length oi reconnaissance body ovur all 160 in.~4,0T2 mm. Width of body , 59.875 in. =1.522 mm. Seight of body overall {incluiling top) 62.125 in.= 1,580 mm. Weight of body (without eituipment) J.IRO lb.=536 kg. BRIEF DESCRIPTION. The reconnaissance car is provided with a special steel body nounted on a 1-ton truck chassis, White, Model TEB-0. Four Kats are built into the body. The two front seats are placed back bo back. The two rear seats have a space of about 2 feet between them, and are also placed back to back. There is a compartment between the two pairs of seats. The floor boards at the back end are extended to form a foot rest for the rear seat. The car is protected by a canopy top and roll curtains. A full set of tools is carried on the car. Also five chests are provided in which are carried all the special equipment assigned to the car. One chest shdee into the body compartment under the rear front seat, one into the compart- ment between the two rear seats, and the other three under the rear rear seat. ^ The chassis used is similar to that used with the Staf! Observation e&r on page 95. A complete description and directions for care, operation, and maintenance are contained in "Handbook of the Reconnaissance Car, Model of 1918." Ordnance pamphlet No. 1972. AETILLEET TEACTOE, 2i-T01!T. (rtate XXXVIII.) The Artillery tractor, 2J^-ton, as supplied to regiments of 155-mm. I howitaers, model of 1918, motorized, consists of one xmit: Artillery : tractor, 2H-ton, model of 1918. Further information concerning this unit will be found in Ordnance ' handbook, "Artillery Tractor, 2M-ton, Model of 1918" (No. 2009). WEIGHTS AND DIMENSIONS. Over-all fei^h, armored 113.5 in.=2,8a3 mm. Over-all width 57.75 in. = l,467 mm. '^idth of armor 33in.=838mm. Mttimiira height 75 in. =1,005 mm. Bright to top of armor , . (iO.5 in . = 1 ,537 mm . length of ground contact (track 3 inches in ground) 71 in. = !,ft03mm Ground clearance without gmusera 13.5 in. =343 mm. Craund clearance with grouser? 15.25 in.=3S7 mm. Weight complete, with full equipment 5,R!0 Iba =2,G35 kg. sdbvGoogIc Grousil pre^^itT" 5.1 Qm. per sq. in,= kg. pwHi.tiD. Weiabc oi sacii ?ia.4 330.51b*— *«.« kg. Weii£hi:.«eai.-ii-™-fc^rii* 10.35 Ib&-4.65 kg. Width of aacfc mw9 3 in. =208 mm. Tmki ui CTJok? ■varvr '■? ^xntvr -Vi 01.^1,141 h^ Duuni^ti^r <:>i' curiiai; <:Lr^-->' 9 &.aZ.74aMBL RoaJ jpt^eil per biiur : T.>>vr ^^pMHi :*r l.XO ■^tuaat; ^vi'uaiiMiB pttcmmiue.-. 5 Tnitrn TTWIm. lottfrnnHiiare rot^Hi « i. jiN) Te'-'iiniiuna wr minoie- Uiirfi *p«Hi J1IW.T' it J.SNl w^-nL'.iiions pur mmuM. RuvBr* ipewl it L'tilO ^viiMnone pt?r aiinute Oapwricy or main juailiai- -ank 20 U. B. Capw.'Liy of iiuiliar- raak. L'tl■^'^ iraur " TTT" fT ffj —Tl t) Itni Oupuciry oi <.:nL-!E jiler ".mks. r^uch IC S. gal — X ff Ktm rtrnme 70H.F. S. V. B. raiuic" vu:i.i^ 31H.P. L>TmbiU'uulI -JKumLiii^r J 3iil>>t> per iiour if JlOO Ibs.-'a^2H kg. BHiEF DESCBISTTOS. Tht.' ■J'-j-ton .VrjJun.- ;rai:ti.'r niotielof 1917. is > adf-yo p aBed roid vehiclo of cL'.f ■Trafii.-Uy-jia: ' ■:>:.'e; TKac is. the power is so rUo ^'uva ::>R'(uri i rivw'^lt:. ijnillei^ ctiAin. or trad nuapmed at ■izwl fhyKlvHi^y'. :og".'cb.t;c jui^i .■i.'onei.'wd by hardened sted pi» La;'„-...-It? ..'X'.-i't-; .c'.'ivc -.hn aioet 'Pii.' j^j't^'pAl kti'si^' a:':'. .vrsjT'ii.-CLi.T! _-c :iiie'Zi-3--toiiAEt3lny tnttff ioes v.oc- i.iv*'L.'r ■u;i:i'rMl!7 ■7:ti -liar :f :htf modeco £^yu.:-A. :L".f Trvtivi- .-i s:.;L'r.-ir. ii-ii -j^irtitTiIady be cayag it ■ not ie*i!r^«;»i 'o --arri n '.■.•aJ.. Vi:: :i\" :-; ':e employed nt Hut t na ap catt- ::■:(: iZ'.: :i:>.rcr*.:a::r.T'. ri »,V.V'a::'.'e ^riirmeoii. iT-; isi*;[n'M>;i.: -■(.'. :;\i.' :::a;:- 'tu^ih.'. AiU'.'ii :s built op of xoUrd sted aiapei rji'.-il-- .vf.-.v>.'ti.v. uv. >rH'jt".*. -.v % ' ciistaad aU stresses. Tki« inme 30F .r;!-- ii:.;- ::..t^^ -'.'.o -i-'i r jt.'u.?* bttt it holds tbon io "iieir pr-:[:rir T-.'idri'.-fs^r.v '■: .-;■■:' i.:'i;;'.'..'r T^e SLun. &«iite. viAitt isatiinbie'i ini:*. .s ?ii;.'L'..T':;.'i.i .-;: :>..• Trui-k l^v means of a rofler-lmu sdbvGoOgIc 99 Eissembly on which it Tpnts throiifili tlie m<>(lium of a transversely mounted platform spring in front, and coil springs in the rear. The power ia developed by means of an engine group whieli con- sists of an internal combustion enfi^ine, using gasoline for fuel, sus- pended in the forward end of the main frame, a fuel-supply system, fm ignition system, lubrirating system, and a cooling system. The power developed in the engine is transmitted to the ground through the medium of a power s^-stem, comprising in the following (ffdfir, a master clutch, controlling the application of power between the engine and the transmission units; a transmission gear box unit, containing the gears by which the speenim. howitzers, model of 1918, motorized, consists of two units: Ammu- nition truck body, model of 1918; 2-ton truck chassis, Nash model 4017-A and 4017-L. Further information concerning those units will be found in the Ordnance Handbooks. "Ammunition truck body, model of 1918" (No. 2002); "2-ton truck chassis, Nash model 4017-A and 4017-L." 179896—20 10 sdbvGoOgIc 102 OBNBRAl, WEIGHTS, DIMBNeiONS, Aim OCTUNB SFBCmCATIONS OF BODT. Weight of body pouniia . . 1, 800 Over-sll length of body inches.. 13D Over-all width of body do 56 Over-all height of body do 54 Width ot floor {inmde) do 4) Length of floor (inside) do 114 Heigiit of Bideg (inside) 1 do 38 BRIEF DESCBIFTION OF AHUUNITION TBUCK BODT. The aBUnunition truck body, model of 1918, consists of & box-type ; steel body opening only at its rear end. The body is designed to ; accommodate original packing cases of any type of anununition. , When this vehicle is used near the front lines all four sides and its i floor are lined with detachable heavy cocoa matting to prevent •. undue noise. A tarpaulin cover attaches to the body, and so prot«ete i its contents. \ In addition to the designation of "ammunition truck," as ex- plained, the ammunition body with various loads is designated iriuD mounted on chassis models as follows: "Wireless," "telephone," "tank," "personnel," "ba^t^e," and "ration." The chassis and bodies for the above are identical for all purposes. The differences in chassis and body equipment and the load earned when the truck is used for different purposes are noted under tsbla of equipment on page 162. All of the above bodies are mounted -TOM CSASSIS, MASH HnDBLS. Rated load capacity 4,000.001b.=l,820kg. Body weight allowance 1, 200. 00 lb. =546 kg. Weight of chams only 6,700.00 lb. =3,030 kg. Maximum gross weight (includii^ chassa, body and pav load) .'. 11,900.00 lb.-=5, 420 kg. Percentage of chassis weight on front tirea (without load). 66. 66 per cent. Percentage of chassis wei^t on rear tires (without load) . 33. 33 per cent. Percentage of load weight on front tires 30. 00 per cent. Percentage of load weight on rear tiree 70. 00 pM cent. Percentage of gross weight on front tires 45. 00 per cent. Percentage of gross weight on rear tires 55. 00 per cent. Over^ili length ot chassis (without body) 202.60in.=5, lOOmii. Over.all width of chadsia (at widest part) 78. SO in.— 1,950 DiB. Chaada wheel base 124. 00 in. =3, 1» in*. Length of frame Itack of driver's seat 117. 13 in.=2, 980 bb. Widt^ of frame (outside dimensions) 38. 13 in.=96S mm. Height of rear end of frame from ground (loaded) 35. 6010.^890 mm. igbt of rear end of frame from ground (unloaded) 38.50 in. ^980 mm. sdbvGoOgIc 103 Diameter of tuniiiig dicle 50. 00 ft.— 15.25.meten. r«»d of front wheels «0.50 iii,-l,540mm. Tread of rear wheels 60.50 in.— 1,640 mm. Road cleat&nce under front axle {lowwt point) 14.75 in.— 374 mm. Boad clearance under i«ai axle (lowest point) 14.75 in.— 374 mm. BBIBF DESCRIPTIOlf, MODELS 4017-A, 4017-L, AND 4017-F. The chassis of all of these models is of 124 inches wheel base and is fitted with a Buda model H-U four-cylinder engine, dry disk clutch, four-speed transmissioD, and a drive to all four wheels through shafts and internal gearing. Although the greater number of units in all three chassis are alike, there are certain structural differences which exist, mainly in the model 4017-F chassis as against the other two. He 4017-F is a two-wheel steer chassis, while the others have four- idieel steering. All of them use four-wheel drive and braking. The models 4017-A and 4017-L are fundamentally tJio same, differing only in certain details of equipment. Model 4017-L has an acetylene generator and searchlight, and oil side and tail lamps, both speedom- eter and odometer and an impulse starter on the magneto shaft, while the 4017-A has no impulse starter, uses a Bijur electric generator, storage battery and electric lamps, and is fitted with an odometer «ily. Aside from the two-wheel steering and the necessary changes Ironght about by it, models 4017-F and 4017-L are practically the atme, though a few slight differences exist in the dash, the brake vtoBa shaft and rods, and the wheel universals as described in detail in Ordnance Handbook No. 1999. The engine is a standard design L~bead, Buda model H-U, using force-feed lubrication, pump cooling, and fitted with a Strorabei^ cer- luretor feeding through cored passages in the cylinder block, an JEiaamann magucto, and on the model 4017-A only, with a Bijur generator. llie clutch is of the dry-plate type and the drive from it is through ■n open two-joint propeller shaft to a four-speed, sliding jaw-clutch type transmission. From the latter extend two two-joint propeller ^lafts, one forward and one rearward, to internal gear-drive axles, ^le live membw has exposed axle shafts extending from it, and the mds of these shafts are each fitted with a universal joint and a spur lunion, the latter meshing with an internal gear bolted to a disk steel "Wlieel. All the wheels are interchangeable and are all driving and Bteering wheels in models 4017-A and 4017-L, while in the model 4017-F only the front wheels steer. A complete description of the 2-ton truck chassis, models 4017-A, 4017-L, and 4017-F, with instructions for care, maintenance, and operation, is given in the ' 'Handbook of the 2-ton Chassis Nash Models i017-A, 4017-L, and 4017-F," Ordnance Pamphlet No. 1999. sdbvGoogIc 104 ANTIAXBCEAFT MACHHTE-OUN TRAILEB. (Plate XXXV.) PBDICaPAL DIHBN8I0N8 AND OUTLIKB SFECinCATIONS. Capadty IJ ton— 1,530 ^. Wheel base 74.625 in.=l,«» mm. Width of back 56m.=l,428mm. Width of frame 37 iii.=943 mm. Length of frame 120 in. ^3,066 mm. Diameter of wheels 32 in. —816 mm. Tire size 32 x 3 in.=816 I 76.6 mm. Front springs 42 x2}in.=7 leavessemieDipiic. Be&T springs 42 x 2) in. =8 leaves semielliptie. Axle bearings Bock No. 307 and No. 308t»p« roller bearings. Drawbar length 45.5 in.i-1,160 mm. Width of body over aU 47.5 in. -1,210 mm. Length of body over all 123.6 in.=3,I30 mm. Depth of body '. 12 in.— 306 mm. Floor Oak. GBNEBAL DESCRIPTION. The antiaircT^t machine-gun trailer body, mounted on the l^tco trailer chassis, is used to cany two machine guna, with two monnti, and the necessary spare parts and ammunition for these guns. In addition, various tools, namely, pick, shovel, ax, hatchet, etc., ue carried on the outside of the body. The cygnet type of gun mount is located in the rear end of the body, while the tripod mount is at the front end, these mounts being into^ chai^eable. Each moimt will be equipped with four adapters, affording n for mounting either the Brownii^ end Vickers machine gun, the H■^ lin tank uid Marlin aircraft machine gun, the Hotchkias machiM gun, or the Browning automatic rifle. The spare-parts chest, located in the center of the body, contfttnt spare parts for the two Browning machine guns. On each side d the spare-parts chest and running crosswise of the body are the two gun chests, which contain the guns when they are not mounted onthl mounts. The ammunition boxes are placed under the apare^Mitl and gun chests. The trailer body is made of oak, and is suhstantiaUy braced hf comer aisles and side braces. The Boor of the body is made of and bolts to a heavy longitudinal oak sill which rests on the channd frame of the trailer chassis. sdbvGoOgIc D„ii„.db,G6og c^l^ 106 The body of the artillery repair truck, model of 1918, is of the drop- side, drop-gate type. Both the sides and the gate when dropped are held level with the floor of the truck by chains. Hence they can be readily used as workbenches when the body is put in working position. Provision is made for the attachment of body equipment tools to the outside of the drop sides. A vise is bolted to the rear end of the right drop side. A compressed-air tank, 14 inches in diameter by 48 inches long, is affixed to the drop gate, being supported by cradles and metal straps. The body is completely roofed, but the entire roof can be raised a lowered at wiU. Both ends of the truck are inclosed by drop &a- tains, which, as well as the tarpaulin, can be rolled up when not in use. Slung under the floor near the front of the body, on both sides, but clear of the chassis frame, are an oxygen tank (right side, 9 by 33 inches) and an acetylene tank (left side, 12 by 33 inches). The sted floor box which extends below the floor of the body is used to cany various small tools and accessories. Since the truck carries electrically operated machinery nnd is electric hghted, a system of conduits for the protection of the neces- sary wiring is incorporated on the floor of the truck, so that the power generated by the machinery provided for the purpose can b« conveyed to imits not on the truck; the body is equipped with an adequate number of outlet sockets. Bench cabinet. — ^This cabinet is made in two sections. In the front section there are 15 drawers in which are carried an assortment of hand and precision tools. The rear half of the cabinet is divided horizontally into two storage compartments of equal size. The top of this cabinet is used as a workbench and has bolted to it a large bench vise and an electrical motor-driven bench grinder. Generator.— The electric power necessary to light the truck and operate the machinery with which it is equipped is generated by » 4-kilowatt engine generator unit centrally located on the body. Lathe,— At the front of the body there is placed a No. 9 stir screw-cutting engine lathe. This lathe is provided with a milline attachment and is belt driven from an electric motor. Riveting hammer. — An air-riveting hammer is fumished. Tlffl hammer has a piston diameter of 1.125 inches and a stroke of 3 inches. The hammer delivers about 2,400 blows per minute and utUizes 18 cubic feet of free air per minute. It requires one-fourth-inch hose connection. The total weight of outfit is about 14.5 pounds, whib its over-all length is 15.5 inches. Ant COMPRESSOR.- To supply the compressed air for the hamnuf juat mentioned the truck is provided with a portable air-compreBSor 3dbvGoO> 107 init mounted on skids. The compressor is belt driven from IJ- lorsepower compound wound motor, the belt of which is kept tight by means of a spring idler. Drux PBES8.~A sensitive drill press bench type outfit is placed on the left of the body, adjacent to the engine generator unit. This press will drill holes up to five-eighths inch in diameter. P08T TOOL OBiNDER. — The truck is equipped with a portable post tool grinder and is especially adapted for grinding lathe centers, cutters, reamers, rolls, etc., and for surface parallel and internal grinding jobs of all kinds. The machine can be clamped in a vise for bench work. Wbldino ovTFrr.— An oxyacetylene welding and cutting outfit is also furnished. This outfit is packed and carried in two steel carry- ing cases; both the welding and cutting torches are constructed so as to permit the mixing of both oxygen and acetylene in an interchange- tble tip. The cutting torch is of the two-hose type. Both oxygen and acetylene are carried in tanks located one on either side of the truck. Bench obinder. — Bolted to the rear of the bench cabinet there is a bench grinder, 110-volt direct current one-half horsepower. It carries two-10 by 1 inch alundum wheels. Its weight approximates 100 pounds, while it runs at from 2,100 to 3,000 revolutions per minute. ABTILLEBY STTPFLY TRUOE. (Plrte XUI.) The artillery supply truck with loads A, as issued to regiments of 155-mm. howitzer, model of 1918, motorized, consists of two units; Artillery supply truck body, model of 1918. Two-ton truck chassis, Nash model. Further information concerning these units will be found in Ord- nfmce handbooks: "ArtillerySupplyBody, Model of 1918" (No. 2004), "Two-ton Truck Chassis, Nash Model" (No. 1999). OBNGRAL WBtOHTa AND DtMBNStONS. Weight of body 1,200 pounds. Over-all length o( body 122 inches. Over-all width of body 55. 5 inches. Hei^t of body 51 inches. BRIEF DESCRIPTION. CaASBIB. The 2-ton truck chassis, Naah model, used as one of the units of the artillery supply tnick, is identical in all respects, including equjf*- ment, with the chassis of the ammunition truck. (See description, etc., of chassis under heading "Ammunition truck.") sdbvGoOgIc 108 The artillery supply body is made of steel and has drop sides. These when lowered are kept level with the floor of the truck bj chains, and can be used as work benches. A large bench chest (an integral part of the body) ia proTided at the rear of the truck. It is used for the storage and carriage of small chests, such as the grindstone, carpenter's chest, etc. Entrance to the bench chest is secured by means of a door at its rear. A floor locker for the carriage of sundry small supplies is pro- vided. Means for the convenient carriage of three spare artillMT wheels is also furnished; two fasten to the sides of the truck and one lies on the floor. Over this last-mentioned wheel there is placed a supporting frame for supply chests. The artillery supply body consists of a floor incorpor&tii^ two steel boxes, a rigid front plate, two hinged sides, and a bench chest, the latter being mounted permanently at the rear of the floor ami extending higher than the body sides. The space between the benck chest and the front of the truck body is used to carry removabi* steel chests, the number and contents depending on the service f« which the truck is intended. Thus, the body incorporates three chesti (bench chest and two floor boxes), and also carries removable chests' The latter are called by the following names: Forge chest. Spring chest. Supply chest. Fluid chest. Thus, the complete load a truck will bear will consist of any oi all of the four chests named above, or any combination of them, in addition to the bench chest and floor boxes with which every truek is fitted. The bench cheat itself carries certain wooden chests, the number depending on the load of the truck. In addition to the standard body equipment fastened to the out- side of the body with which each artillery supply body is equipped, one of the following loads is can-ied hy each. Each load consists of a number of steel chests and the various equipment and parts earned in them. Load A: Cleaning and preserving materials, and spare parts foe artillery material. Assigned to motorized batteries. Load B: Spare parts for F. W. D. 3-ton trucks. Assigned to supply company of motorized regiments. Load C: Spare parts for optical instruments, telephones, fiie-eoa- Ixol instruments, etc. Assigned to headquarters company of mobn- ized raiments. sdbvGoOgIc 109 Load D: Kaw material, bar stock, etc. Assigned to and accom- panying artillery repair trucks. When operating in a dirisional mobile repair shop a special equipment will be carried in addition to regular load D. UOBT BSPAIB TBT70K, MODEL OF 1818. (PItte XLIII.) WEIGHTS, DIMENSIONS, ETC. Rated load capacity 1,000 lb.-455 kg. Body w«dght (complete) 613 lb. -289 kg. Vu^t of chums 1,725 lb.=-46& kg. UuiiDun giteB weight loaded 3.610 lb.-l,«0 kg. ChMBU iraght on front tiies (without load) 69 percent. Chuna weight on rear tireti (without load) 41 percent. Load weight on front ticw 29.7 percent Load weight on rear tirea 70.3 per cent. Lead gnee weight on front tirei 31.1 percent. land gross weight on rear tires 68.9 per cent. Overall length of chassis (without body) inches 153.06 in.— 3,890 nun. Overall width of chasms at widest part 65 in.— 1,650 mm. ChiMis wheel base 113.18 in.— 2,870 nun. [Length of frame back of driver's seat 47.37 in.— l,20(inni. ttdth of frame (outside dimensions) 38 in.— 965 mm. -Sogjit of rear end of tnune from ground (enpty) 31.75 in.— 805 mm. IDiimetet of turning drcle 40 ft.— 12.2 meters. Tread of rear wheels 66 in. —1,425 mm. tfioad cleannce under front axle (lowest part) 11 in.— 280 nun. ntntd clearance under rear axle (lowest part) 10.68 in. -272 nun. Engine, numbar of cylinders 4 Bc«e 3.875 in.-9e.6 mm. Stroke 4.5in.-114.5mm. I^aUn displacement 212. S cu. in.— 1,370 cu. cm. Hotse power, mod 24.03 BBIXF DE80BIPTION OF CHASSIS, DODOE LATOUT NO. 9017. Engine. — ^Four-cylinder, four-cycle type, L-head cylinders cast in Uock. Bore 3.875 (3%) inches, stroke 4.50 (4^) inches, displace- ment 212.5 (212>^) cubic inches, 24.03 horsepower, N. A. C. C. formula. CoouNQ. — Centrifugal pump water circulation. Radiator. — ^Tubular type, with cooling fins, separate shell and core. OiLDfO. — Constant level circulating splash system. Ignition. — ^Elisemann high tension, type G-4, second edition magneto. Gakbubetfeb. — Model 25, 1-inch Stewart with hot-air connection. Fuel feed. — Gravity. From tank located back of driver's seat. Clutch. — Multiple disk dry plate. Teansmission.— Selective shding gear type, three speeds forward lud one reverse. sdbvGoOgIc 110 Drive. — Shaft drive from tranamission through one univra^ joint to bevel gears in the rear axlo. Propulsion, — Through rear springs, Hotchkias drive. ■] Frame. — Channel section pressed steel. Three cross mcmbets. , Springs.— Front— Semielliptical 35.812 {35H) inches long, 1.75' (1 ^) inches wide. Rear^three-quorter elliptical. Lower 43 inchee long, 2 inches wide, eight leaves. Upper, 17.25 (17^) inches long, 2 inches wide, seven leaves. Axles.— Rear— Internal shaft, full floating type. Incorporatii^ bevel pinion and ring gear and bevel pinion type differentul. Front — I-beam section drop forging, heat treated chrome vanadiaiM steel, adjustable tie-rod, steering knuckles and arms bushed, lul^ cated by grease and oil cups. Wheel hubs fitted with roller bearingSi' Brakes.- Two sets: Pedal-operated service brake, external coih tracting on brake drum ; hand lever operated emergency brake, iatar< nal expansion on rear wheel brake drums. ' Tires. — 33 by 4 inches, pneumatic. ' Steering. — Front wheels only used for steering. Steering gear ol the worm and wheel type ; 1 7-iDch diameter hardwood steering whed. Controls, — Left hand steering gear, -mth shift and emei^etu^ brake levers at right of driver's seat. Spark and throttle control levers mounted on sector located on right side of steering columd beneath the steering wheel. Ignition ground wire switch located ot instrument board. Accelerator pedal located on upper toe board. Clutch and brake pedals are located left to right respectively. BRIEF description OF LIGHT REPAIR TRUCE BODT. The light repair truck is provided with a light repair truck body, i model 191S, mounted upon a commercial car chassis, Dodge layo^j No, 9017. The body is divided into a front compartment^ which hUH a single seat, and a rear compartment, which is used for tiiu^iii^ purposes, closed by a tail gate or door. The front seat is wide^ enough to comfortably seat three passengers, including the driver.] This is protected by a folding top and side curtains, while the tniii j portion is covered by the paulin provided. The rear part of the body has the following inside measurements: Length, from back of the seat to the tail gate or door, 62.5 (62 1-^} inches; width, inside of side plates, 46 inches; maximum height, between body floor and undOT- side of paulin supporting bows, 48 inches. The light repair truck body, model 1918, is made entirely of steel and mounted upon the frame by means of five transverse channel steel transoms and two longitudinal channels which level up the framework upon which the body rests. This is made necessary by the kick-up, which is standard construction in the chassis frame". sdbvGoOgIc Ill The bodj ia without doors or seat rushion, the paulin, when not in use, being employed for the latter. On each side of the dash or cowl there is placed an oil lamp and upon a bracket fastened to the jutrument board, also on the cowl, is mounted a standard acetylene teftrchlight. The body carries a complete repair equipment of machine and urpenter tools, a mechanic's vise which can be attached to the tail pte and a 2-ton block and tackle. In aUtpim,<)^b;l.asiacbeB... ting i>(— Continued . BattrflmtorGO Pin. D.J5 by O.Sincb. . . Lunette baaring Lunette pin. Neck ;oke cballng plate. . . Nedc Toke counter stop. .. , Neck yoke counter sMp pli Neck Joke counter atop 9pi Neck yoke stop PoUbotly Pole socket Pole bracket strap Pole etamp bolt Polepin Pole pin bushing CamKcUng pote bni^eta.campiete, consisting ot — ne:;tinepoIeFel , Crown nnt, O.nlncb ' Crown nut, n.Slnch I Dowel, 0.35 by 1.37Slnclie9. . . . ' Pole bracket atrap Pln^WpeA Swbtgboit'.'.V// """.'.'. '.'.'.'.'." Washer 8Dlltpln,Abyl DMiUetree , complete , conslstliig oC Staple (doubletree). !....;;.;;; Separator (doubletree) Separator (doubletreestrap)... Drum (rUb t), complete, consls ting Drum body... Drum bead Intermediate drum bead Drum end plate ml (left ), CO mplete , conslatlng ol— Intermediate drum tiead Drum end plate Wiiectampdemslehall) Wire clamp (mhlehalf) Block bolls Binding post bloc] ->lephraie Jindingpc Wire clam] . Telephcme connections... SplUpii imm brake Brake rod end... Brake rod Brake rod spring. . Brake lever 'biacket. Brake lever p(n 15-2KA-ao U-27-I8.. .::::::;:: lJ-aKL-3 ISD. LB3E. IHK:::::::;: LBISB. ff*- ,db,Googlc Nnm ' Nimwofport. Drewliie. Pl^aBl Drum brake, cmsisting of— Contlniwd. ""'c"l±:^/a^"^"'- : Ctown nuts, 0^ inch 5^'.^^f^{JSg£S-bou------ igegii;:;;::;:::;:;;:::::::::;::::;:::::::::::;::;::: iMKA^I:::::::;:: IT' sSsffi" U~lKA-3« fS- Drumlatrii, complete, consistjngot— iS^KJ-18. IBllE. SSuSSS""" Frame, cgmpletv. conslat^ of— 1 It^tt S ■"kSSSsbt**'"'- :::r ,db,Googlt' to mppoft nftu - - , ' . Poll prop tiMkMKa. 3. Pnp^mtattaaU. Propf*-'- SpUtpfm... BMHtyotm lUw roUv tndiat (rliht). . . RMrroltarbnlkM(KK) Mlt plu, CUE br 1^ indM Mt,lnAM (ricbt) Hntitadnt (T^t) IS-IKE-M... IS-3KA-I3.. IS-1KE-«I. . lS-IKL-4... 15-lKI^l... l&-iKIM... 16-JKUS... 15-lKL-l... IS-IKIM... IJ-lKUl,.., 15-lKL-I... IJ-JKIM... I1-J7-1J . AB11A. : AB41C, . AB41D. '. AB4IB. PBte. PB9L. PB9A. PBIOA. Digitized bvGoOgIC j Wli«ls.30-iQi* complete, consisl log of— Cent inufd. Hprtnss (oil valTe)... rebolll IS, romplete. consisting ItlES::;:: :::: pm^. ■■-■ ?S' lo-IKP-lfl IS-IKP-B 15-aKP-S is-2KP-5;;i*r, :■■: S: '."! pbse! 15-MCP-lO .... PBIOK. IS-2KA-42 sdbvGoogIc DBSCBIFTION OF THE KEEL. The Reel, model of 1909 MI, Plate XXXV, is a two-wheeled vehicle designed to cany, lay, and recover 8 miles of insulated cable. It has interchangeable pole connections which enables it to be adapted to either horse or motor traction. The principal units are the wheel, axis, frame, drums, drum- driving gear, clutches, drum brakes, connecting pole, operator's seat ^tle and automatic pole support. In order to lay the wire, which is carried on the two drums, the latter are disengaged from the dutch and are permitted to revolve free upon their axis, subject to control by the braking action of the drum latch and drum brake, or the friction clutch when appUed for that purpose. To recover the wire or wind it upon the drums, the clutch in the right drum is applied and the drum made to revolve through the chain driving gear connected to the right wheel. The left drum is driven by the right drum through a pin clutch, which is operated by a handle in the left outer end of the loft drum. The frame, complete, is an assemblage of special shaped pressed steel members together with gusset plates, reinforce pieces, the pole socket at the front, automatic pole support, and pintle at the rear and the assembled axle. The latter includes three parallel tubes horizont^y Sxed between two axle brackets, from the outer faces of which project the axle arms. The side rails, riveted to seats on the inner side of the axle brackets, extend to the front and converge to the pole socket, to which they are secured. The front cross rail extends laterally between the side rails, and at its mid-point is attached flie rear end of the pole socket. A tool box with a lid opening on the top is assembled in the space on the right side of the pole socket between the side rail and the front cross rail. The inside bore of % pole socket conforms to the taper on both the connecting pole wd the (horse) pole. Holes are provided in the socket for assem- bling the rectangular key and the pole pine which are used to secure in place the connecting pole and (horse) pole, respectively. The fear portion of the frame consists of two U-shaped members riveted together to form a hollow flask of square section. This assembled piece is rigidly secured to the axle brackets; it is reinforced by gusset plates on the comers, and at its rear mid-point is located the auto- niatic pole support and pintle. An operator's seat and a leg guard ftTe mounted on the right comer of the rear cross rail. A wooden roller to protect the wire when it is being laid or recov- ®^ is suspended from brackets beneath the rear cross rail, and a Wttilm: but smaller roller is supported in brackets (attached to the '^w cross rail) immediately in front and above the rear roller. Two *^imecting pole brackets for carrying the connecting polo when sdbvGoOgIc 118 not in use are riveted to the frame, one at the front and one ai rear, on the left side. The top member of the three parallel tubes connectii^ the brackets serves also as an axle for the drums. The left ei closed with a stopper ; the right is finished to receive within it ; of the clutch. Four paths for roller beatings, which fit in the d heads and upon which the drums rotate, are finished upoD drum axle. The two drums each consist of a cylindrical bot perforated flange steel in the ends of which are'riveted drumh' To each of the latter is riveted a circular corrugated end plate « extends perpendiculKrly from the axis of the axle and the bot the drum. On the right end of the drum axle between the : axle bracket and the right end of the right drum is assemble annular disk, the sprocket ring, which rotates upon the drum A aprodiet secured to this ring is driven by a roller chain frc sprocket on a jack shaft which in turn is driven by a second i chun carried on sprockets on the jack shaft and a hub on the i axle arm. This hub and the axle sprocket are driven by a br driving rii^ bolted to the hub box of the right wheel. Four pins fitted in the driving ring assemble in corresponding holes ii axle sprocket and thus drive it. Owing to the angularity of ax< wheel and axle sprocket, the driving pins work in and out of sprocket holes as the wheel revolves. The clutch connecting the drum driving gear and the right d is located in a recess in the right drumhead behind the revol annular disJc — the sprocket ring. This disk is assembled betwee adjusting ring, threaded into the end of the recessed drumhead a second friction disk arranged with a shght axial movement s the drum axle. Movement of the friction disk agfunst the spro ring clamps the sprocket ring between the friction disk and adjusting ring and thus connects the driving mechanism to drum. Three toggle links pivoted to the friction disk, the r drumhead and a sliding coUar or clutch spider applies or releases clutch according to the action of the spider. The latter i^ mi along the drum axle by a sleeve sliding in the interior of the d axle and connected to the clutch spider by two keys working thro slots in the axle wall. The sleeve is threaded on its outer end an actuated by a nut formed in the hub of a bevel gear meshing wi' pinion on the lower end of a handwheel shaft mounted on the r axle bracket. The pin clutch that connects the left drum is operated by a hfU in the left drumhead of the left drum. The handle is secured ' rod which passes through the interior of the drum and throuj hole in the right drumhead of the left drum. A socket in sdbvGoOgIc 119 eft drumhead of the right drum seats the end of the rod when the Iriims are looked. A lever on the right side near the seat operates a drum latch for lock- jig the right drum, and, through the pin clutch, the left drum when thej are at rest. Moxement of the lever engages or disengages a spring plunger with a projecting }»iece riveted to the right drum end plate. The lever is held in the position to lock or free the drums hy means of a pawl, which engages notches in a s^ment riveted to a flange of the leg-guard gusset. A leather-faced hrake shoe attached to the drum latoh lover may be brought against the flanged rim of the right drum end plate to act a.s a brake. A hrake shoe, which engages the flange of the left drum end plate anil which is controllecrAn,O.THiidi. round Inad U-K-3S mUDlBSlaTgrplBi, 0.101 bTl !!>«>»■ IS-IKH-IT... piiuraiiS br xnmebM iA-2KB-n... SMulianAbMaiiliW 1^-aKH-lT... s^Sgoitah ■ is^KH-o... AiitN^lT^lndiH ' lS-»-n9 BoAatilnp.MtiKbea lt-»-3ie KwaptMMUiMp. 34 Indus It-fi-Sie... . is-t-ne... . u-«-ne... FliAbwidleslni^ PiAbMditnp.lSlnchu. . . FtckfltiopaMnpE, SO ladies ' lb-&-3l» PlBk«tia»atnpe,Blneh<» 16-6-IH SbaralblidBitnp.llliichi'; lA-E-llt -— -' is-s-as , i&^3ie (iBfl) IS-2KH-J.., _..(rigmj iB-aKH-s... ^1 (right) 15-»KH-S... ^ridwtbKiiUcresldtit) 15-iKH-3... — |«(iiuls) 11-W-I4 mifwwii) \i-^}* ff-p"" j-s-j Bbapabot. ningBpI aprtneflllerfh^Wlwl), right lS-2Kn-44... SprtngaUer(hitm^ata. a Bgungmiu.HU]' uii Lode wUban, cami CtDwa mti, (U7Mni ipHtpta.rfbyi*"' Brake buMi body ■ . ■ . 30-3-6... IB-IKB-8.... IS-aKB-W... Brake band end 15-2KB-8.... Brake hand lining ■ lS-aKB-8..,. Band clip ; lft-2KB-«... BandBuTda I l!MKB-9.... fliakodroiB IS-SKB-S.... Brake hangar (rijlit) i IB-aKB-lfl... sdbvGoogIc Brake haa Brake 1bi' « con istiti): ol— Con ■e crank shaft bearing. . . Brake [ever catch Brake Uver shaft hewing. . . Brake band pin Brake rod (ri?ht) Brake rod (left) Separator " '■ ' 'iv 41inelies Bolts Jb: 1 A bv l| inehen Bivnta Abvjinch copper... HlTBts A by 3 Inch, copper . . . SpUtpiDs HbySlnehes Handvfrtlers.O SIB Inch Crown nma,(ig73lnch Split pins fibvnsiniiits.... Brakarodend Segmentrack Brake band pin Adiustlnglink AdjustlngDut Lock washer (brake bolU)! ! '. Bolt, 0.375 by 1.2S inches Bolts,* by 1 loch Bolts, i by IH Inches Broniepln, fbyiVinch SpUtpin Hoy 2} Inches..... FhitlelatchsiHing... Pllitle bearing Pintle spring Finite spring seat Pintle nut Lock washer (pintle bearing bolt)... Split pin, H by H inches SplltplD.abyaiinohe! Nuts,0,76indi Bolt, ) by JJ* inches Bolt, J by iji ini*es Lunette, complete, consisting of Lock washer... Prop, complete, coi re (rlBhtl cedelt).. Prop chain guide Middle rail, right Middle rail, left Middle rail, loo plate. . Bide rail liners, left.... Cairylng spring Spring bolt Belleville spring Lunette bracket Wheel guard Frame handle, riEht . . . .dvGooglc .Name of |«rt. Urawlnit. 1 TlretBittV. Tttmt, complet* nNuHsllnn o(-t.'onllniied. NuuloJiBincii."!!!!;!!!!;!!!!;!!!!!"!:;!!;;; Q«. , Vb ^ujifii?.sr'flte^ rirebDlt»,wllhiiuUi ,. : IS-IKP-^ PncR. BS- anbrinia Sprlutaioil vul.uj Btl Wheel tKl^oiiEplun^ leel riveti, ramplele, KmiMinn ol— 1 by Inch, button he«d I D„ii„.db,Googlc DESCRIPTION. The headquarters instrument cart, Plate XXXVI, is a two-wheeled vehicle made of metal throughout with the exception of the wheds and the packing within the chest. It is designed to cany part of the fire-control equipment for the oi^anization to which it is attached. The principal parts are the wheels, axles, frame, road brake, diest and chest^upporting device. The whee^ are of the standard 56-iuch ordnance pattern and m the same as and interchangeable with those upon the reel. The frame consists of a middle rail, side rails, and axle brackets. The middle rail is formed from two flange steel channel sections, riveted together and strengthened by a top plate and transoma; it is fitted in the rear with a pintle and pintle bearing and in the front with a lunette bracket. The two side rails are riveted one on each side beneath the chest. Their ftmction is to support the chest and convey the weight of the load through the chest-supportJug device to the axle. The chest-supporting device consists of two spiral carrying spiisgB beneath each side rail and interposed between the side rails and a^ brackets clamped to the axle. The springs are mounted on bolts which are fastened in the side rails and which pass through holes in the axle brackets. Betweoi nuts on the lower ends of the bolts and the axle brackets are a^embled Belleville springB. The carrying springs absorb the excess vertical loads when traveling over rou^ ground and the Belleville springs absorb the load due to the rebound. The road brakes are of the contracting band type and may be operated from the front of the cart or from the operator's seat cm top of the chest by means of a brake lever on the right side. Tlw bnike bands are held in position by cHps, which in turn are fastened to brake hangers on the axle arms. Contraction of the bands apm drums bolted to the wheels is accomplished from the lever through * linkage and a brake shaft. The instrument chest is made of flange steel {dates shaped and riveted together and fitted with doors, lock bars, and packing devics. The principal components are : A chest body, a cheet frame, tranaomai bottom plates, chest cover plate, intermediate pl&tee, chest front, front door, rear door, door boxes, and lock bars. The interior ii made up into 17 compartments of different ^zes. Several more durable lubricant for very heavy bearings, and one whic^ will not permit so much friction and consequent cutting of the bearings in cases where the compression grease cups have inadvert^ mtly been allowed to become empty, aa would the No. 4J^ lubricant if ined alone. The graphite shoijld be mixed with the No. 4J^ lubri- MDt by kneading and without heating the latter, as heating destroys its viscosity. The proportions to be used are 95 per cent of No. i}^ Inlvicant to 5 per cent of graphite by volume. dixon's special carbiagb graphite grease. This is a special prepared mixture of flake grf^hito and grease. It is used for the lubrication of recoil guides when guides are not pvrided with oil grooves or grease cups. It is used also for the hbricatioD of counterrecoil spring sj^tems. For this latter purpose v^Mrience has shown it to be the best lubricant yet devised. CLOCK OIL. dock oil is issued, in bottles containing 1 fluid, ounce, for lubri- eating the ddicate bearings of the telescopic sights, position finders, panoramic sight, and elevation quadrant. This oil should be applied by dropping from the end of the dropper attached to the cork. sdbvGoOgIc 126 IIYDROLINB. H;drolinc is a chemically neutral mineral oil issued for use in the recoil cylinders of the carriages. It is required to be entirely free from signs of acid and alkali at all ordinary temperatures, to show a specific gravity of between 0.835 and 0.87 at 60° F., to be free from ash, sapouifiable oil, and to show no signs of decomposition up to 200° F. It is also required to pass a specific viscosity teat and a cold test of 0° F. This oil is issued for use in the recoil cylinder and should be used for no other purpose. Great care is taken to obtain a superior and uniform grade of this oil in order to insure uniform recoil action. It is evident that similar care should be exercised by the service to keep this oil separate from all other oils and to see that storage conditions are such as to prevent any adulteration from old Hydroline, moisture, sediment or other oils. Hydroline is issued in 5-gallon tin cans provided with screw caps. When Hydroline is drawn off from recoil cylinders it should be strained through a piece of fine cloth in order to remove the coarser sediment and should then be allowed to stand in a covered can for not less than 24 hours before used. In drawing oil old Hydroline the supply should always be removed from the top of the storage receptacle to avoid including any sediment which may have settled. Mere discoloration of old Hydroline is not an indication of unservice- ability. Recoil cylinders should never be left empty, as, when in that condition, they will dry and rust. Any leakage from the cylinder should be promptly replaced. GLYCERINE AND WATER, A mixture of glycerine and water {50 per cent each) is used in the recoil brake mechanisms of materiel of Schneider design; viz., 155-mm. howitzer, model of 1918. This mixture is prepared as follows: Neutral glycerin (25° Baum^), 50 per cent; pure water, 50 per cent. The specific gravity of the mixture should be 21° Baum^ at 59° F. (15° C), The mixture should be boiled for 15 minutes For use in the recuperators of the above materiel, a mixture ^ similar to that for the recoil brake, but with the addition of 4 pe^H cent of chemically pure commercial caustic soda is used. Thi— ^ mixture should not be boiled. The glycerine used in these two mixtures must be neutral. Test i with litmus paper, which should not turn red on being immersed i::^ the mixture. If it shows red, titrate with chemically pure commerci^^ caustic soda (NaOH) and stir until the acid is neutralized. sdbvGoOgIc SLUSHING OILS. Light slushing oils are issued for the preservation of bright metallic 'aces when the carriage and gun are out of servioe. This oil a intially a mioeral oil but may contain resin. It is required to be from animal and vegetable oils, from mineral acid, and from all itaoces which would corrode metal. It is also required that the leoiisiBtency be euch as to allow the application of the oil by means |af a brush at all ordinary temperatures. A thin coat of this oil applied to the bright surfaces will give good nitectioQ. In very cold weather, when the oil is somewhat stiff, it boold be applied by holding the brush perpendicular to the surface be coated and tapping the same with the point of the brush. More application of the oil is made, care should be taken to see that surface to be coated ia free from rust, water, kerosene, and ibricating oil. Before applying slushing oil to the bore of the guns, after firing, the ses ahould first be washed out with clean water, drained, and made ntfectly dry. light slushing oil may be used on all bright surfaces of guns except B breechblock and breech box, which should be oiled with Sngine 1 Ko. 1. When a gUn is out of service, however, light slushing oil tcy be applied to the breechblock and breech box, provided this Mtting is removed before the gun is fired. If slushing oil is applied less than 30 hours before subjected to a savy rain, the surfaces so coated should be examined to make axm tat the moisture has not penetrated the coating. To remove this oil, the greater part of the coating should be taken F by noeans of a scraper and the balance removed by using a rag or itton waste moistened with kerosene. A hot solution of water and will also loosen the oil and render it easy to remove. As a rule, light slushing oil may be sufficiently removed from the m to permit of firing by means of scraper alone, but when the bore to be thoroughly cleaned preparatory to star-gauging or other iticaL examination use must be made of the bore sponge covered tth burlap moistened with kerosene or a solution of lye and water, nearly all the oil has been removed in this manner a clean cov- of burlap should be put on the head of the bore sponge and this Tering moistened with kerosene and sprinkled with Lavaline for use the final cleaning. I KEROSENE (OOAL OIL). I Kerosene is issued in 5-gallon tin cans, for cleaning purposes only. I Bhoold be used in connection with the plumber's force pump sup- ped to each poet for flushing out and cleaning the interior of recoil 17^85—20 12 sdbvGoOgIc 128 cyliiiders. " It should also be used on the burlap covering of i special bore sponge when removing light slushing oil from the bq of the guns. Kerosene will also be found useful in cutting and Hi ening any oil which, has become dry and gunmiy. In order to id| the allowance of kerosene go as far as possible, use should be fl made of a scraper in removing light slushing oil, the remainder m be removed with a rag or wad of cotton waste and moistened wi kerosene. MISCELLANEOUS CLEANINO MATERIALS. ' Enu'n' cloth N^o. 00 ia issued for use in cleaning bright metd parts of guns and their carriages. No coarser abrasive th&a tl should be used on breechblocks or breech boxes. In removing n it will be found that if the rusted part be first moistened with keroaf for an hour or so that the subsequent cleaning of the part with emi cloth will be facilitated. Emory cloth Ko. 1 is for use in cleaning bright metallic suifae No coarser abrasive than this should be used on the piston rods any carriage. Lavaline is an abrasive scouring material in powdered form, li provi(Jed for general scouring purposes on bright surfaces of guns ■ carriages where a coarser material is not needed. It will be fod especially useful in cleaning the bores of guns preparatory to si gauging or other critical examination. In using this substaaM should be applied on a rag, burlap, or cotton waste, moistened^ kerosene and rubbed vigorously. i Putz pomade is the mildest of the abrasives issued and is intend for use in polishing brasses and other polished surfaces. It should applied with a soft rag or old chamois akin, rubbing vigorously. The sash tool No. 6 ia used in applying light slushing oil, A plumber's force pump is issued for the spraying of kerosene. into the recoil cylinders when they are being cleaned. A painter's duster No. 2 is for use in dusting surfaces which i about to bo painted. sdbvGoOgIc lABT n.— INSTRUCTIONS FOR THE CARE, MAIN- TENANCE, AND OPERATION OF THE MATERIEL. maheuvebino t hm cabbiaqb. Li trareling, the rear end of the trail is oRiricil on tlic 1.5/i-nmi. nritzer carriage limber, model of 191S (Sclmoidcr). In urdor to fopeAj distribute theweight the howitzer is i-etriu-tcd mid locked I traveling position. The carriage is locked in the center of its iTcrse to relieve the traversing screw of excessive strauis. HOWITZER IN TRAl-ELIXG POSITION. Hace the carriage in the center of its ti-averse. Turn llu' iixlo iveling lock to traveling position. Place the cradle (raveliiij; kicks traveling position and elevate the howitxci- until the rear cradh' nd engages the cradle locks. Place the sleigh locks in traveling tion. Open the cradle front cover and push down tlic kick le^er 1 the piston rod nuts are disengaged. Attach the rolnicliiiji kle to the retracting eye of the howit:^er an<] llic lunclle faslen- pg, and retract the howitzer until the sleigh locks liavc cnlcrctl tke JFooTes on the sleigh. (This eliminates the possibility of pullinf; (he leigh off the cradle.) Then turn the sleigh locks out a suHick>nt tistance to clear the obstruction and move tlic howitzer buck into hveliug position. Turn the traveling locks back into traveling toejtion. Lift up the lock lever, close the front cradle ciner. unci nnove retracting tackle. HOWITZER IN BATTERY, Open the front cradle cover and push the lock lever down, .\ltacli be retracting tackle to the cycbolt provided for that }>urpt)sc on tlie hield and the front eyebolt on the breech coimterweij;lit. Turn leigh lock to firing position and pull tke howitzer into hatlerv. jft up the lock lever until the piston rod lock engages the piston rtxi lUts. Close and lock the cradle front cover. Turn tlie cradle lock firing position. Turn the axle traveling lock to liring positiun. CABB AND UAINTENAIirCE OF THE MATERIEL. OII-S AND GltEASES. The battery equipment includes lubricating oil, clock oil, coal nil, ight slushing oil, soft grease, and glycerin. Each of these oils is jgiied for a particular purpose, as heretofore statcti, and si'.ould not (129) .vGoogIc 130 be xaed for any other purpose. The use of any oil other than tl prescribed is prohibited. The use of pumice, emery powder, or other abrasive is prohibited. The polishing of any part of the riage is also prohibited. Lubricating oil will be used exclusively in all oil holes (Plate XL and in lubricating such parts as wheels and axles, cradle and sli slides, elevating and traversing mechanism, exterior of cylind brake bearings and hinges. Clock oil should be iised on the spindles and bearings of the i setter, quadrant sight, and all optical instruments. The oil she be applied only when the instruments are dismounted for cleaning -. should be applied from the end of a dropper. Care should be ta to remove all oil from the lenses of optical instruments wit) chamois cloth. Coal oil (kerosene) is issued by the Ordnance Department cleaning purposes only. In the field it may be used for lante (Coal oil for general iUuminating purposes is issued by the Quar master Corps.) Light slushing oil is prescribed for use in the protection and pre vation of all bright or unpainted surfaces of steel or iron when material is to remain unused for an apprciable time. Its use t lubricant for mobile artillery is forbidden. Before applying slushing oil to any surface the part should be thoroughly cleanet as to be free from rust, water, coal oil, lubricating oil, etc., as tl presence will cause rusting under the slushing oil. The slushing should be applied in a thin, uniform coat. Except in very < weather, it can be applied with a paintbrush. In cold weathe should be applied by stippling, that is, lightly taping the surl with the end of the brush held with the bristles perpendiculai the surface to be covered. In cold weather it should be wan before use. It may be readily removed by the use of burlap or wi dipped in coal oil. Soft grease is used in the elevating and traversing gear box . in the gear cases of the sight. A mixture of glycerin and water is issued for use in the re and counterrecoil mechanism and for no other purpose. It sho be stored in air-tight cans provided for that purpose and care( protected from dirt or dust. CARE OF THE HOWITZES. When not in use the muzzle and breech should be protected canvas covers provided for that purpose. The breech mechanism and all working parts should be kept cl and well lubricated at all times. The breech, fixing, and percuai mechanisms should be dismantled periodically for cleaning and oil sdbvGoOgIc 131 Kerosene is issued for cleaning purposes only and should be applied -inth a soft rag or cotton waste. Care should be taken to thoroi^hly [ttmoTe kerosene before lubricating, as the presence of kerosene under ihibricatlng oil will cause rusting. Engine oil No. 1 is provided for bibricating purposes and in general for oiling all bearings and moving nriaces not provided with compression grease cups. After firing periods, the bore of the howitzer should be cleaned to mnove the residue of smokeless powder, and thoroughly oiled. In deaning, wash the bore with a solution made by dissolving one-half ound of sal soda in 1 gallon of boiling water. After washing with b soda solution, wipe perfectly dry, and oil the bore with a tbin sating of light slushing oil furnished for this purpose. The vent id primer seat should also be thoroughly cleaned with the tools rovided for that purpose. r Should difficulty be encountered in openii^ or closii^ the breech Bte matter should be reported to the chief mechanic or commissioned pficer'wbo will give tiie necessary directions for removing the trouble. Tha breechblock should never be forced shut. I CABS OF THE OABBIAOE AND OTHE& VEHICLES. The materiel should be thoroughly cleaned and oiled at intervals pot exceeding two weeks and as soon as possible after each tiring eriod. This should be done in accordance with the following direc- ions, and using only the oils prescribed. Oil boles which may have ecome clogged with congealed oil should be cleaned with a piece of rire. Wood should never be used for this purpose, as splinters are kely to break off and clog the oil holes. ' Oil should bo applied by leans of the grease gun to all the oil holes shown on Plate XLVII. horoughly clean and oil the elevating segments and pinions. Oper- te the elevating and traversing mechanisms through the full extent ( their travel. If either gear operates harder than usual they should « overhauled and the cause removed. The exposed part of the sleigh slides when the howitzer is in battery hould be thoroughly cleaned with coal oil and oiled, the howitzer oiled out of battery, and the front end of the slides cleaned with m1 oil and oiled. See that all oil holes on the sleigh are tilled with oil. To clean the axle, place the howitzer in battery, if it is not already a that position, and clean the visible parts of the axle by successively nversing tiie carriage to the full extent of its travel to the right and rft. Oil the rollers in the roller boxes and see that the oil holes are lean and filled. Qrease the lunette with heavy grease provided for that purpose. To grease the carriage wheels, remove the linch pin and axle cap, vilich the wheel oil valve is attached, and see that the oil pass^es I clean. With the aid of the grease gun fill the oil cavity in the axle 1^ grease and replace the wheel oil valve, axle cap, and linch pin. sdbvGoOgIc TO GREASE LQIBEB ANC CAISSON WHEELS. To grease the caisson wheels, pull out the wheel oil valve and it so that it stays in open position. With the grease gun fill the fl cavity in the hub cap with grease. To grease the limber wheel, remove tlie grease plug and with fl grease gun hll the cavity in the hub with grease. CABE OF THE RECOIL AND OOUNTBRRECOIL ISECHAinSM, The recoil cylinder should be kept full of liquid and the prop* quantity of liquid and pressure maintained in the counterrecoU sp tem at all times. An insufficient quantity of hquid in the recoS cylinder has the e£Eect of increasing the pressure at the begimiing d recoil, causing excessive stress in the cylinder walls. A large void the recoil cylinder may result in the lireaking of the piston rods 1i the howitzer being put out of action. An insufficient pressure quantity of liquid in the counterrecoil system has the effect of i completely retui-ning the howitzer to battery. When the howitzer is in action the length of recoil, Plate X^ should be constantly checked by means of the recoil indicator. Thi may be done by placing chalk, grease, or white lead on the edge the sleigh and screwing up the adjusting nut of the indicator uut the index touches the sleigh and measuring the length of the tri when the howitzer has returned to battery. The following table gin the proper length of recoil at various elevations: Powder cliBTei!. i J I 1 If the howitzer over recoils or does not return to battery, afl making sure that the recoil cyhnder contains the proper volume^ Uquid, the pressure in the counterrrecoil system should be verifll If the ■i)ressure is less than the normal value; as shown on the preaat correction plate which is located on the underside of the cradle fni cap, Plates XVII and XXXVIII, roeatabliah it by the addition more gas and measure the recoil again. In general, after tliis is do tiie recoil will be within the allowances fixed by the table. If length of recoil is still too great, measure the amount of liquid in coimterrecoil system. If this test shows the amount of liquid to 3d by Google 133 insufiBcient, reestablish the normal level. If the recoil is still too long, call it to the attention of the mobile repair unit. At the same time, examine the measuring instruments and have them tested. When the howitzw is not in action the volume of liquid in the two cylinders and the preaaure in the counterrecoil cylinder shoilld be periodically checked, and when poesible, before each firing period. The recoil and counteirecoil cylinders should be emptied and re- ' filled at pfo-iods not exceeding three months. They should be thor- [ oughly cleaned and refilled once in six months or oftener if occasion ; demands. This operation is to be done by the mobile repair unit. 1 Battery mechanics are not allowed to open the recoil mechanism under any conditions, or do any work on the recoil mechanism other than that specifically detailed to them. OOBBBCTION PBBS8UBE FI^TE. Ulnlmum pmaure. ' Kjpniqxm-Lbpersq.ln. K|[pot«].ciD.lLl>Per»q.ln.| •c. ■F. : so 3S.S sea.x 113 ■ 40 104 ' Si's . 50B:2 35 «5 M.S soa.i 3; 486.1 30 30 08 Sjis 4T7:fl 31 403!; 1 33.0 46B-4 31 iss-i 1 5 41 448.8 43S.5 ' XI 31:3 m-'2 3( 431.0 1 423.9 ; -IS s M.5 1 41S.B M.7 ffii 1 The outside of the recoil cylinders should be kept thoroughly oiled to prevent rusting. They should be inspected periodically and any signs of rusting immediately romoved. TO KEASTTBB THE PBESSUBE AND UQUID IN THE COtTNTER- BECOU. STSTEH. Elevate or depress until the howitzer is dead level. If the u are not on level ground, jack up one wheel until the axle is dead level. It is important that the howitzer should be level in both directions. Otherwise erroneous readings will be obtained. Open the cradle head cap, Plate XIX. Remove t^ie plug nut, gage cock body head, and front g^o cock l»ody plug, .iissemble the pressure gage adapter and tighten up on the pressure gage adapter union. By means of the gage cock wrench turn the gage cock body until the pointer points below the normal level. Screw in the adapter handle, opening the valve, and read the pressure directly from the gage. If this pressure is below normal, reestablish it by introducing sdbvGoOgIc 134 gas into the system. If it is above normal, open the adapter tieedle valve, allowing the gas to escape until the desired pressure is reached. To test the level of the liquid, screwin the adapter handle, ppenii^ the valve, and tap the adapter needle valve. By means of the gage cock wrench turn the gage cock body in a counter-clockwbe direction until the liquid begins to flow from the port in the bottom of the pressure gage adapter, then close both valves. If the indicator now points between 0.5 above and 0.5 below the zero line on the scale, the liquid may be considered at the proper level. If the indicabK points outside of these limits, pimip in or drain off as directed on the scale. Remove the pressure gage adapter and close the cradle front cap, TO ADD- GAS TO THE COTnTTEBBECOUi ICECHANISU. Open the cradle bottom cover, Plate XIX. Remove the filling valve cap and the filling needle valve capi Assemble the long swivel and swivel nut on the filling valve and screw the nipple on the swivel Mount the air pump on the pump bracket and attach the short swivel nut of the filling pipe marked "Reservoir" to the pump and that marked "Sleigh" to the nipple. Open the filling needle valve by means of the filling needle valve wrench and pump in air until the desired pressure is indicated on the gage. See that the needle valve is tightly closed, remove pump and filling pipe, replace filling valve and filling needle valve caps, and close cradle bottom cover. When it is necessary to entirely empty the counterrecoil cylinder, itshould be recharged with nitrogen from the nitrogen cylinder carried in the artillery supply truck. {Nitrogen is preferable to air hecawt it contains no corrosive elements.) When nitrogen is not available air may be pumped in as directed above. To chaise from the nitrogen retainers, proceed as follows: Remove caps and assemble swivels and nipple as above. Attach flexible filling pipe to the nipple and nitrogen retainer outlet by-means of thfl two short swivels. Gradually open nitrogen retainer needle valve until desired pressure is indicated on the gage. Disassemble the equipment as above and close cradle bottom cover. Gas should never be added to the system without first assembling the pressure gage and opening the pressure valve. TO ADD XJQtriD :rO THE COTTITTEIIIIECOII. ICECHANISIC. Mount the liquid pump on the pump bracket and assemble is ^ same manner as the air pump, Plate XXVI. Pump in the counter- recoil liquid until the proper level is reached. When the pumpa and measuring instruments are not in use they should be packed in tlieil proper place and the cradle covers closed and locked. ■"■Googli; TO ABD LIQUID TO THS HECOIL CTLINDEB. Depress the howitzer as far as possible, liy means uf tlie filling plug wrench, remove the filling plug, Plate XVIII, from the recoil cylinder head, attach tlio funnel pipe and funnol, aiul pour in liquid natil it commences to overflow. Return the howitzer to horizontal position, allow about 100 cuhit- centimeters (6.1 cubic inches) to floir out. See that the gasket is in goos are free from foreign matter and well See that the panoramic sight is in its case if not in use and that the eoses are clean and free from moisture or oil. See that the tools and accessories are in their proper places. Open the cradle head cap and see that the gage cock pointer points between +5 and —5. See that the cradle cover bottom is closed and latched. See that all working parts are well lubricated and that all metal urfoces are well slushed. 3dbv-GoOglc Examitte the limbers and caissons to see that brake bands are in good conditioQ, that all nuts are tight with spht pins in place, that a31 working parts are well lubricated, and that all metal surfaces are well slushed. Directions for maintenance and inspection of other batterj and regimental vehicles are given in their respective handbooks. INSTBUCTIONS FOB BEPAIBS AKD BEPLAOBKENTS. DtrriES OP THE GUN OBEW, The gun crew is authorized to make only minor repairs and such replacements as are herein designated. The work should be done in accordance with the following directions, and any difficulties which can not be remedied should be referred to the battery mechanics of mobile repair shop. The gim crew is strictly forbidden to dismantle any part of the recoil or counter-recoil mechanism. TO DISMANTLE THE FIBING MECHANISM. Remove the firing mechanism block, and take out the firing pin housing holding screw. Take out the firing pin housing with a teat wrench and slip out the firing pin and spring. Remove the primer seat plug with a teat wrench and slip out the firing pin guide. TO ASSEMBLE THE FIRING MECHANISM. Place the firing pin guide in the front end of the firing mechanism block and replace the primer seat plug with the aid of a teat wrench. Place the firing pin spring and firing pin in position, replace the firing pin housing, using a teat wrench to screw it home, and replace the firing pin housing holding screw. With the breech closed and locked, replace the firing mechanism block. DISMANTLING THE PERCUSSION MECHANISM. With the breech closed, remove the percussion hammer operating shaft nut and percussion hammer operating shaft collar. Pull the percussion hammer operating shaft out of its bearing to the right, allowing the percussion hammer to drop out. Open the breech and remove the percussion hammer shaft plunger and spring. ASSEMBLING THE PEECUSSION MECHANISM. With the breech open replace the percussion hammer shaft plunger spring and plunger. Close the breech and slide the percussion hammer operating shaft into its bearings from the right, passisg it through the percussion hammer. Replace the percussion hammer >perating shaft collar and nut. sdbvGoOgIc DiaHOUNTINO THE CBADIA TRATEUKO LOCKS. With the bovitzer in firing position, drive out the pins which bold the cun screws in place, remove the cam screws and slip out the cradle tTftveling locks. ASBBHBLINO THE CEADLE TRAVELING LOCKS. With the howitzer in firing position put the cradle traveling locks JD place, being sure that the flat surface of tbe cylinders are up when the handles are in traveling position. Replace the cam screws and pins and rivet the ends of the pins cold. DISHOTFNTINO THE SLEIOH TRAVELING LOCKS. Pot the howitzer in battery if not already in that position. Remove the split pins, which hold the cam screws in place. Take out the CUD screws and slip the traveling locks out of their bearings. ASSEMBLING THE SLEIGH TRAVELING LOCKS. With the howitzer in battery, place the proper traveling locks (left ud right) in their bearings, with the handles pointing between direction plates and cam screw slots toward the front of tbe c&rri^e. Pot the cam screws in place, being sure that they engage in the slots, and replace split pins. REMOVING THE CARRIAGE WHEEL. Traverse the howitzer to the full extent of its traverse to the side opposite the wheel to he removed. Place the jack imder the axle IS near as possible to the wheel. It is important that a block of wood he placed between the axle and the head of the jack to prevent Bcoring the axle. Remove the linch-pin fid, pull the free end of the linch-pin latch Way from the wheel and pull out the linch pin. Remove the axle cap with wheel oil valve attached to it; remove the outer leather Washer and pull off the wheel. Remove the inner leather washer and axle collar. REPLACING THE CARRIAGE WHEEL. Replace the axle collar and inner leather washer and slip the wheel in place. Replace the outer leather washer and axle cap with the *iieel oil valve attached. Replace the linch pin, push the linch-pin latch back into position and replace the linch-pin fid. EEMOVING THE CAISSON CONNECTING POLE. Place a jack under tbe front end of the pole socket, loosen the pole- socket bolt, remove the split pin from the connecting pole key and TBmove the connecting pole key, driving it out if necessary. Remove le split pin from the pole pin, remove the pin and pull the pole out f its socket. sdbvGoOgIc KEPLACINQ TlIB CONNECTING POLE. Place the connecting pole in the polo socket with the pole p down, and replace the connecting pole key and pole pin, Eepl the split pin and tight«n up the pole-socket bolt. The horse pole is applied to tho caisson as directed above exo that the doubletree adapter is placed in the groove on top of the p socket and the connecting pole key is passed through the squ lugs on top of the polo socket, holding the doubletree adapter place. U18MOVSTING THE PINTLE. Remove the split pins, nuts, and bolts which hold the pintle be ings in place. Full the pintle and bearing out of the pintle-bear supports and remove the two halves of the hearing. The pintles of all battery and regimental vehicles except the c riage limbers are identical. ASSEMBLING THE PISTLE. Place the two halves of the pintle bearing around the pntle i slide the unit between the pintle bearing supports. Replace bolts, nuts, and split pins. REMOVING A CAISSON WHEEL. With the caissoaprop down and the brake released, place a ji under the chest on the side near the wheel to be removed. If p sible, it is advisable to place a timber between the bottom of the cb and the head of the jack. It is important that the center of jack should be slightly to the rear of the ccnterline of the axle, ott wise tho caisson may tip over backward. Pull out the hub la and with tho spanner wrench remove the hub cap. Lift the wb fastening from its seat on the end of the axle and pull off the wh< Care should be taken not to damage the brake band in removing wheel, NG THE WHEEL. With the chest jacked up as above, place the wheel on the aj being careful to slip the brake drums into the band without dam'ag the latter. Replace the wheel fastening and, holding the hub la' out, screw on the hub cap with a spanner wrench until it is made tight. Then back off the hub cap until the hub latch seats in i hole in the hub band. REMOVING A LIMBER WHEEL. Jack up one side of the limber, placing the jack under the ou end of the axle, just inside of the wheel which is to be removed. 1 connecting pole should be allowed to rest on the ground. Do i sdbvGoOgIc sttempt to jack up one aide with the front eii the unit on tlu' obturator spindle. Shp the filling-in disk on the obturator s]>indle and place the obturator spindle in the breechblock. Witli the firing mechanism housing key pulled back, screw the obturator ai)indle into the jSring mechanism housing as far as it will go, ushig the wrench provided for that purpose, and push the firing mcc-lianism hou-siiig key forward into place. Close and lock the breech carefully, being sure tliat overytliing functions properly, and replace the firing mechanism block. PREPAKATIOM OP THE UQtTID FOR THE RECOIL TTie Uquid for the recoil mechanism should be of the following coiaposition : Neutral glyc^n 50 parts by volume. Pure water 50 parts by volume. "Die -mixture should be boiled for 15 minutes to test 21° B. (den- 8ity = 1.15) at 15° C. (59° F.). The liquid used in the counterrecoil cylinder shall be of the fol- lowing composition : Neutral glycerin 50 parts by volume. Pure water 50 parts by valunie. Add to the mixture 4 per cent pure caustic soda (NaOH) by weight. The mixture need not be boiled. Note. — The glycerin used in the two mixturca must be neutral. This may bo verified by means of blue litmus paper which should not turn red. Should the 178395—20 13 sdbvGoOgIc 142 litmus [taper turn red, add caustic soda (NaOH) chemically pure, and ttir tintil Iht adds are neutralized, aad the litmus paper no longer leddena. The pure glycerin to be used in equal parts in the compaction of the mixlan glycerin testing 25° B. Wheo commercial ^ycerin, which may teet to 28° or 30° B., miut be used, th amount of water to be added must be increased eo that the mixtuie will teet 21° B. (density=].16 tol.17). Liquid withdrawn from the cylinder may be reused after Uia sediment has been allowed to settle for 24 hours. When the sediment has settled great care must be used not to disturb it when remonog the liquid. The glycerin should always be strained through a cleU piece of linen or muslin before using. The battery mechanics are authorized to replace only such partt as do not involve hot riveting, forcing, or machine work, and an forbidden to dismount any part of the recoil mechanism. The di^ mounting or assembling of any parts of the canine should be dcm in accordance with the following instructions. Any difficulty whie can not be remedied by the prescribed method should be referred 1 the mobile repair imit. The spare parts should be well coated wit vaseline or heavy oil and each piece then wrapped in paper to preveu the oil from being rubbed off. TO DlSMOrXT TBE FIBISC MECBAMtaM. With the howitzer in traveling position and the piston rod lock Plate XIX, in firing position, remove the firing lanyard, take out I" three screws which hold the lanyard bracket in place, and slip I lanyard bracket out of the firing mechamsm bracket. Take out I split pin and remove the firing handle shaft nut. Pull the atril aud firing hsndle shaft to the rear until the striker comes out of gui<|p. Kemove the tiring handle shaft piston and the handle reti apriug tn>m the fn,nit end of the handle rettum spring housing. Open the front cradle cover, Plate XXV, remove the stop from tins bottom of the cradle front transom, remove the sjrfit whicli liolds the look lever pia in the lock lever, remove the lool lever pin, and slip the piston rod lock toward the left side of the ria^!;(^ until the firing safety shaft is uncovered, and pull the firini riftfoty ^*haft forward until it comes out of the carriage. Opi firing; safety latch cover. Plate XXV, and drop the firing aaf^ latc^h and tiru^ safety latch lever out of the bottom of the Biifnty liitt'h guide. Ti,> tSSEMllL.e THK FtUlSi; lIECHANtSM. Willi tho howitzer in traveling position, move the piston rod lock til tliii left sido i>f the carriage aud push the firing safety shaft into itrt lii\aring!i until the rear end projects thruu^ the rear intermedlat* sdbvGoOgIc 143 jearing. Open the safety latch cover, insert the firing safety latch ind the firing safety shaft lever, push the shaft through the lever, turning the shaft until the key on the shaft engages the keyn'&y in the lever, and push the shaft home. Move the lock plate back into Ering position and replace the stop screw, lock lever, lock lever pin and split pin. Insert the handle return spring inside the housing and place the firing handle safety piston in position. Slip the guide log of the firing mechanism striker in the T slot of the bracket and move it forward until the firing handle shaft projects through the firing handle shaft piston. Replace the firing handle shaft nut and '. Bpht pin, and replace the lanyard pulley bracket and lanyard. See fliat the firing mechanism operates properly when the howitzer is in battery and be sure that the safety latch functions properly when the pston rod lock is open before firing the howitzer. TO &I8M0ol*T TBB ELEVATING KECHANISU. It is important that the howitzer should be either in traveling position with the cradle rear hand bearing firmly on the cradle traveling locl^, or in firing position, depressed until the cradle bears "firmly on the depression stop, with the rear end of the cradle blocked Up to prevent it from tipping, before dismounting any part of the elevating mechanism. If the elevating segments are to be removed, the howitzer must be in the latter position. Remove the split pin and handwheel retainer and lift off the liandwheel. Remove the two set screws which hold the handwheel latch plate and unscrew the latter. Remove the split pin, worm ■haft nut and washer from the lower end of the elevating worm 4]iaft; remove the split pin which holds the dust collar in place and lift the shaft up through the bracket. Remove the split pins and jmtB from the cover bolts and remove the worm wheel case cover, Plate XXIII; lift out the elevating worm and ball thrust bearing. Remove the split pin and pinion shaft nut. Pull the elevating VDnn wheel from its seat on the pinion shaft. Remove the split ^ns and nuts from the pinion shaft bracket bolts and pull out the In^ket. The pinion shaft can be then pulled out, passing it be- tween the spokes of the right wheel. To remove the elevating segments, remove the split pins, nuts md washers from the four transom bolts which hold the upper devating-segment transom in place and take out the transom bolts. Ifove the segments and transoms as a unit forward, driving them irith a block of wood if necessary, until the segments drop out of the elevating .segment brackets. sdbvGoOgIc TO ASSEMBLE THE ELEVATIKO KBCHAtttSM. With the howitzer in position as described above, pass the lo end of the elevating segments between the elevating segment thj brackets, and the front transom, Plate XXIII; raise the segment i up mitil the lugs on the top edge of the segments are in line V the T slots in the elevating segment brackets, the front and ) lugs straddling the front segment bracket. Pull the segmental back into the segment bracket as far as it will go and replace transom bolts, washers, nuts and split pins. Pass the pinion shaft between the spokes of the right wheel ; through the opening in the right trail Sask, pushing the shaft ha Insert the pinion shaft bracket, pinion shaft bracket bolts, nuts i split pins. Replace the elevating worm wheel, pinion shaft nut i split pin. Place the hall thrust bearing in ita seat in the eleval worm wheel case, and place the elevating worm in position, be sure that the square section of the bore is down. Pass the elevating worm shaft down through the elevating wc shaft bracket, slip the dust collar and dust collar gasket on shaft and lower the shaft through the worm wheel case and w« until the lower end projects below the case. Replace the split ; . which holds the dust collar in place. Replace the worm sh washer, nut and split pin. Replace the worm wheel case co? cover bolts, washers, nuts and spht pins. Replace the elevating handwheel latch plate and lock it in p( tion with the two set screws; replace the handwheel, handwheel tainer and split pin. After ±he materiel is. assembled, elevate a depress the howitzer through the full extent of its travel and i that the mechanism functions easily and properly. With the axle traveling lock in traveling position, split pins from the Belleville spring compressors and lift off the col box covers. Unscrew and remove the spring compressors, 1 move the split pins and nuts from the traversing roller forks; out the fork thrust collars and Belleville springs. Lift out the fo with the traversing rollers mounted in them. Slip the travera roller shafts out and drop the rollers out of the forks. With the axle traveling lock in traveling position, place the tr: ersing rollers and traversing roQer shafts in the traversing ro) forks and slip the assembled units in place in the traversing roi boxes. Replace the Belleville springs, four springs to each rol arranged as follows; Bottom spring, convex side down, sect spring, convex side up, third spring, convex side down, top spri Digitized bvGoOgIc 145 tonrex aide up. Replace the fork thrust oullara, fork nuttt and uplit pins. Screw in Belleville spring oompresBoTS until they scat in the rsing roller boxes. Replace the roller box oovera and split pins which hold them in place. TO mSMODNT THK TRAVBBaiNO IIICRAS'ISM AND AXLB. Place the howitzer in the centpr of its traverse, and put the axle biveling lock in traveling position. Place a timber, chipped to fit die profile of the trail flasks, across the uaderside of the trail just Uck of the draft hooks, Plat« XXII. With a jack bearing against the timber, lift the carriage until both wheeb clear the ground. Block ) under the timber, remove the jack, and remove both wheels. Remove the split pins and handwheel retainers and lift off the budwheels. Remove the split pins and handwheel shaft nuts, and the shafts out. Open the fear case cover and remove the hand- Aieel shaft pinions. Remove the split pins and intermediate shaft and lift out the traversing intermediate gears. Take out the case dowels and remove the split pins and nuts from the ^ear bolts. Remove bolts and take off gear cases. Remove the split ins which hold the dust covers in place; unscrew the traversing itermediate shaft bearings and lift out the shafts. Remove the pHt pin from the thrust bearing adjusters, and remove the thrust earing adjuster locks. Remove the gasket rings and leather gaskets mn the ends of the axle housing. Plate XXI; remove the housing ar screws and lift off the traversing screw housing covers. Unscrew traversing screw bearings. Pull off the traversing gears. If it is eared to remove the axle, place the axle traveling lock in firing posi- n and pull the axle, traversing nut support, traversing nut, and ^versing screw as a unit, out of either side of the carriage. It is referable to remove this unit from the left side of the carriage to tevent damage to the azimuth scale. Drive out the traversing nut ^>er pin and remove the traversing nut and screw from the travers- g nut support. Drive out the rivet which holds the traversing lew atop collar in place and remove the stop collar. Screw the sversii^ nut off the traversing screw. The traversing nut support m not be removed from the axle in the field. The traversing screw can be removed with the axle in place in the bllowing manner: With the axle traveling lock in traveling position, ifter the traversing screw bearings and traversing gears have been amoved, turn the screw until its right end projects beyond the end f the traversing screw housing. Drive out the rivet which holds the raversing screw stop collar in place and remove the stop collar, lien turn the screw in the opposite direction until it comes out [ the traversii^ nut, and remove the screw from the left side of the sdbvGoOgIc The carriage should be blocked up as described above. If the axle has been removed, screw the traver^ng nut on the tnr- ersing screw, screw on the traversing screw stop collar'and pin it in place, riveting the ends of the pin cold. Center the traver«ii| nut between the shoulder on the left -end of the screw and the atflp collar. Place the traversing nut in the traversing nut 3upp«t. Replace the traversing nut taper pin and drive it home. When tin above parts are thus assemblep ttuMt^h the holes in the traversing screw housing, the piniooi meKliiug with the traversini: gears. Replace the gear case dowels lad alt gear case K>It$. pulling the nut^ up tight and replacing the spS pins. Stv that the pinions on the lower ends of the intermediate Bhifh nicsli pr\>tH'rly and uniformly with both of the trtiversing geilt S«>rt>\v the iutermeviiace shaft bearings in place and replace theflpB pins over the ilust voLIars. Ba'.-k out the thrust bearing adjustifi HJi^'htly and s«.-rew ihe iraversiug s^-rew bearings into position. S* l>luco the travcrsiiii; sv.Tew housing covers and housing cover sere** Itoplace the leather ^askocs and gasket rings on the ends of the uk ItouKiii^. Tighteuup th<:' thrust bearing adjusters until they just beti du tlio ends of cr.<:' travi^Tsict^ s>.Tew and replace the thrust bearinl adjustov Uvks ait.! 5i>i-.t :>i.us. Replace the traversing int«iine<&- tfOHt^i: after ^>La<.-itV;: cr.o haudwhcel shaft piaionsin position, paasti liHud\sluvl siiafts 'hr<.>'.^:h chi' ^ear boxes and pinions, and replw sdbvGoOgIc 147 the shaft nute and split pins. Replace the handwheels, handwheel retainers, and split pins. Close the gear case covers and place the axle traveling lock at finng position. Traverse the gun to the full extent of the traverse in both directions, and see that the lost motion is reduced to the minimum. If the lost motion is excessive, remove tiie adjuster locks, tighten up the adjusters, and replace the adjuster locks and split pins. The thrust bearing adjusters should be so idjusted that any motion of the handwheels will, without binding, etase a corre8pck lever stops when the point of the cam is toward the front of the carriage. Replace the axle traveling lock spring and screw the lock W cover on tight. Back off the lock box cover until the notch ea the under edge of the rim is in line with the bushing opening in the ride of the lock box. Screw in the axle traveling lock bushing and replace the split pin. Operate the axle traveling lock to see that it locks the carriage in the caiter of its traverse when the handle is in traveling position and A)e8 not engage when the handle is in firing position. sdbvGoOgIc With rhft *piutK lH rrrtv^ne poaxum and die izail &&w&K«i gp 30 'hat r.tift tjintipt r?imim rhe ^mniLd in aU poaJaans, ifinrT? •nn Efe« pis vtiuth tinfrifi r:tiM -tpAiin ^ihAfc mix in place ami rmsezEw cbe muL iSd thft -(pftiift /thaft: nun m die Lc^ dde of the (uuria^ (fa^Trm^ is, Ef ims- «iry, with < ivippwr httmmgr or ^ien tbi»tmIL» pMntagll * dirtttion *lnwMt perpendicular to the Bat surfaces on the mde el tU *hhh, Kepl*<^e the left apade latch shaft nnt and diire the pin it fAlUit. Kea<;hin{f throu^ the opening in the under side of the find itftade, preM the »pade latch spring op and slip the spade latch shift mU> itA liearinfpi, entering it hvin the left side and keeping the labi hari'Ile vertitral. Release the spring and torn the handle tanmi Hiul down until the npring engages the flattened spaces in the centit of the hhaft. Replace the right spade latch and nut and dnve tbt fill) in place. I>rivc the pin which holds the spade latch shaft ii iAnft into the riaht licaring of the fixed spade. I'dt the Mpftde in place and slip the spade shaft into position fron thf left Aiitis turning it until the dowel engages the notch in the W( <)>n4l<' brni-e. Ue|>lBC« the .spade shaft nut and drive the pin into j>lm*. E THB BBAn BraflNQ. t(Mni>ve tli bi'Hkt' nhnft nruiH. Uemove the split pins and drive the [ dlmft kt'V" out thnniKh the holes in the shield provided fori' |,iMi' I'ltll out- tlio brake ithaft arms, using a bar as i.i.ik" ^I'tid koyholcr* if utTCtwary. 11, ,vt> I ho nplit |)iii, uut, and washer from the ] t.i.,l;.> .SI pi'W l*iill tlio wrow out of the brake screwj ,1,,' -iikI itikt^ llii' bitnliiiij^ out uf the brake ac I),,'. ^|,|,i 1 111(1 Nt'it^w i>il thi' brake scrw It..- t.iuKi- «ri.'W 111 II t'liH-kwia*^ directior sdbvGoOgIc 149 ut of the brake screw nut, pulling the screw through the hole in the ^eld. Remove the split pins and nuts from the bolts which hold he brake screw bracket in place and remove the bracket. Remove the brake shaft lever and brake shaft bushing and pull he brake shaft out of its bearings. It may be necessary to traverse he howitzer to the end of its travel in order to clear the wheel. ?he brake screw nut can not be removed from the lever in the field. To disassemble the brake screw, remove the split pin and take off he brake handle. Remove the split pin and screw the brake screw top off the brake screw. With the howitzer traversed to the end of its travel if necessary to Jear the wheel, place the brake shaft in its bearings, large end of the teyholes toward the sliield. Replace the brake shaft lever and )iishing. Place the brake arms in the ends of the shaft, curved jortion up, replace the brake shaft keys, passing them through the ioles in the shield, and replace the split pins. Replace the brake screw bracket, bolts, nuts, and split pins. Put Uie brake handle on the screw and replace split pin. Replace the bfafce screw stop and split pin. Pass the screw through the hole in ttia* shield and screw it into the brake screw nut until it projects several inches beyond the nut. Replace the brake screw supporting lint and split pin. Slip the brake screw bushing into the bracket ind pass the end of the screw through it. Replace the brake screw fasher, nut, and split pin. Replace the brake heads with shoes riveted to them and replace 'he brake shoe stops, nuts, and split pins. With the brake released, remove the split pin and pin which anchors ■he brake band to the brake hanger and remove the split pin and pin ffhich fasten the band to the brake rod lever. Remove the split pin fhich holds the band clip in place and remove the clip. Lift the band up, 8prin^g4he ends over the drum. Plate XXXIV. TO REPLACE THE BBAKE BAND. Spread the ends of the brake band and pass them down over the drum. Replace the pins which anchor the ends of the hand to the brake hanger and brake rod lever and replace the split pins. Replace the band clip, being sure that the lug of the band guide enters the slot in the clip, and replace the split pin which holds the clip in place. After replacing the brake bands the tension in the brakes should be tested before using the vehicle. To adjust the tension in the brakes, feinove the split pin and pin which attaches the upper end of the sdbvGoOgIc 150 brftke lever rorf to the br*ke lever be«nng. Adjust the leogth of th« bfftke levCT rod» of the spring bolts. Replace the carrying sprii^, wasben, ^ *pr'mf^ bolt heads, spring bolt head locks, and split pins. Re{4aee j It)*/! whmtl an above. ] i TO RBMOVe AXtE BBACSKT FSOU THE CAISSON. ' li^move th(t carrying sprii^ and spring bolts as directed above, | ffnntvi; fill! Hplit pins and nuts from the guide bolts, uid lift ont the ] f^ifuU; \hi\\m. Itnmove the brake band and take out the pin which ' •■*HiHt^:iM till! brnko rod lever to the brake hanger. Remove the split \ffm Mti'l iiiilM from the axle bracket screws, allowing the bnb . iiw^lff' brnj^kitt to drop off. Remove the axle bracket screws and , pJi'lf tbit axil! brnckttt off the end of the axle. i TO BEFLACE THE AXLE BRACKET. | Yk'HU i\n' '^nisHim juckod up as above, slide the axle bracket oTtf iXw i^-ii'l 'ff tltn Hxltf into position, being sure that the hole to receive Uu- bdii'l i'|j[i is on top. Replace the brake hanger briteket, sxle Uiitf^i R' f'-wo, and iiiifs. Tighten the nuts until the bracket clampe tlu' k- m»\ I'oplni'o Ihi* split pins. Replace the guide bolts, nuts, tUitJ ^pJ>( pjiia Ki'itHNoinblc the supporting springs and brake band J iij/liM^t 1 1,(1 wlit'i'l iw directed above. sdbvGoOgIc TEBIFIOATIOK ABTD ADTUSTMSST OF THE SIGHTS. Battery mechanica lire forbidden to disassemble any parts of the quadrant or panoramic sights and are ailowed to make only such adjustments as are hereinafter prescribed. Adjustments are only to be made with tools provided by the Ordnance Department for that purpose and in the presence of a commissioned officer. Any difh- colties which can not be corrected by the methods herein prescribed should be referred to the mobile repair unit. When out of adjustment the .^ight:^ will cause inaccurate firing and they should therefore be frequently verified and adjusted when necessary. The sight-adjusting target, Plate XLVII, ia provideii for verifying the sights in arsenals, ordnance depots, or when a suitable foundation for the carriage is available. Verification of the sights is of such importance that battery commanders may find it advan- t^eous to make permanent arrangements for such verification when occupying a position for an extended period. The procedure under the above conditions is as follows: Place the carriage on a level concrete or wooden platform and with the aid of Ute testing level see that the center line of the trunnions parallel to the axle of the carriage is horizontal. Level the sight transversely, Bet the angle of site pointer at 300 mils, act the elevating scale at 0° devation, and with the aid of the testing level elevate or depress the Witzer until the center line of bore is horizontal. The bubble in the elevation level should be centered between the reference marks on the level vial. If the bubble is not centered, operate the angle of site Wrm until the vial is level. Loosen the set screw which holds the fear micrometer clamp in place and unscrew the clamp. Turn the tear micrometer drum without turning the worm until the index on the angle of site housing points to zero. Tighten the roar micrometer clamp and set screw. (See PI. XXVIII.) Suspend the tai^et (PI. XLVII) in a plane perpendicular to, the We of the howitzer and at a distance of about 100 motors. Place the front and rear bore sights in the howitzer and move the target Until the center line of the bore as determined by the bore sights pierces the target at the point marked "Bore." Tho vorticality of the target should be then verified by a plumb lino attachod at the point A, which should coincide with the line A-B. With thopano- ttmic sight mounted in the shank of the quadrant sight sot the *zimuth scale and elevation micrometer of the panoramic sight at *iM. With the sights thus arranged, the line of sight should pass through the point on the target marked " Panoramic sight." If the line of sight pierces the target above or bolow the point "larked "Panoramic sight," it indicates that the elevation microm- 8t« (66) of the panoramic sight is out of adjustment. Operate sdbvGoOgIc 152 the elevation micrometer (66) until the line of sight pierces the target on the horizontal center line of the point marked "Panoramic sight," Loosen the micrometer locking screw (72) and turn the elevation micrometer (66) without turning the elevation worm (18), until the index on the rotating head (60) points to zero. Tighten the microm- eter locking screw (72). (See PI. XXIX.) If the line of sight pierces the target to either right or left of the point marked "Panoramic sight," it indicates that either the cross level of the quadrant or the azimuth micrometer index of the pano- ramic sight or hoth are out of adjustment. Traverse the panoramic sight until the line of sight pierces the tai^et at the proper point and elevate the howitzer to maximum elevation, at the same time elevat- ing the quadrant sight. If the point where the line of sight pierces the target appears to move either to right or left, it indicates that the cross level of the quadrant sight is out of adjustment. Cross level the quadrant sight by turning the leveling-worm handwheel (PI. XXVIII) imtil the howitzer can be elevated and depressed to the full extent of its travel without moving the point where the line of sight pierces the tai^et to either right or left. With the wrench provided ^ for that purpose, loosen the cross level set screw and carefully mov^^ the cross level holder until the bubble in the level vial is centerei^^ between the reference marks, and tighten the set screw. If the azimuth micrometer index (53) (PI. XXIX) does not rea^^ zero with the howitzer returned to elevation it indicates that tlK^_e azimuth micrometer index (53) is also out of adjustment. Loos^m the micrometer locking screw (75) and with the teat wrench provid^» d for that purpose, turn to micrometer index (53) until the arrow poin ~ma to on the azimuth micrometer scale (52), at the same time holdiir^ the latter to prevent it from turning. Tighten the micromet-^er locking screw (75). ADDmONAL TESTS. After the sights are adjusted they should be submitted to t>19ie following tests to assure their accuracy at extremes of elevation a^Mid azimuth: (a) With the carriage level and howitzer and sights at zero ele^s^ft- tion and deflection, see that the line of sight and axis of bore pz^^o- longed the tai^et (PI. XXXIX) at the proper points. (b) Elevate the howitzer to its maximum elevation without alt>*^ ing the elevation of the sight. As the elevation of the howitzec" is altered, the line of sight should follow the vertical line through -fche point marked "Panoramic sight" on the target, Plate XLVTI. (c) With conditions as in (a) traverse the howitzer to its extro^^ie , positions in azimuth; as the deflection is altered the line of si^''^ should follow the horizontal line through the point marked "PaDO- ] ramie sight." rr.i;.d.vCoOglc 153 By construction and amcmhlago the sif^hU, if prui>orlr adjusted, ahodd fill the above conditions with aidratantial accuracy. If error be noted, a report of the facte uf the case with the cause, if known, ahoold be made to the Ordnance officer chained with the repair of the materiel for his information and action. VEKIFICATION AND AIUI'BTHEN'T OF THE SIGIfTS IN THE FIEU). In the fidd or when a suitable foundftlioii for the varriaf;e is not iviilaUe, the sights may be verified and atljusted in tho following numer, n^lecting the angle of ))arallax. Jack up one wheel of the wriage until the ce'iiter line of ttio trunnions parallel to the axle of the carriage is horizontal, as detcrminetl with the aid of the testing lereL Elevate or depress the howitzer until the center line ot the bore is horizontal as deterniine AIWU8TMENT OF THE PEEP SIGHT. The procedure for verifying the peep sight is similar to that of the puioramic sight. To adjust the peep sight in a vertical direction, remove the split pins which hold the cross wire hohler and holder sleeve in place. Sraew the holder slee.-e up or down until tlio line of sight pierces the Urget at the proper point, at the same time holding the cross wire stationary and replace the split pins. To adjust the peep sight in a iiorizontal direction, turn the peep sight screw until the line of sight pierces the target at the proper point. Loosen the screws wliich hold the deflection scale in place wd shift the scale until the inde."c on the peep sight points to zero, wd tighten the screws. Loosen the handle-locking screw and turn 4e peep-sight screw handle without turning the peep-sight screw until the micrometer scale on the Iiandlo reads zero, and tighten the locking screw. nrSFECTION BY THE BATTERY MECHANICS. At intervals of from two weeks to one month, and oftener if the *Wount of firing warrants, the materiel should be thoroughly inspected l*y the battery mechanics under the direction of the chief "•eohauic. The inspection should consist of a thorough examination 3d by Go Ogle 154 of tlio howitzcir aiitl carri^e ami all vehicles in the battery equip- ment. The instructions given for daily inspection by the gun crew should bo carried out and in addition thereto the following directions should bo followed. Examine the bore with extreme care to see that serious erosion has not set in. If thoro are any signs of erosion the fact should be reportwl to a commissioned officer. Operate all moving parts ami see that thoy work freely and properly. Examine the piston-rod locking mechanism carefully to see that the parts are well greased and not rusted. See that the pins which hold tne piston-rod nuts in place are in place and tight. Examine the cylinfler heads and stuffing boxes to discover evi- ■ denoe of leakage. If the cylinder heads or stuffing boxes are found to be in a leaky rondition the mol)ile repair unit should be called upon to examine and replace the gaskets if necessary. Drain a. small quantity of liquid from the recoil cylinder and refill it to the proper level. Open the gage-cock ralve and allow a small quantity of gas to _ escape, replacing it with the air pump. See that the air pump is in good condition and operates without difficulty against the service pressure. Allow a small quantity of liquid to escape from the counterrecoil cylinder and replace it with the liquid pump. See that the liquid pump operates satisfactorily against service pressure. Examine the sights to see that the moving parts operate freely and without excessive backlash. Examine all crown nuts to see that they are tight and that split pins are in place. Examine the trail and cradle to locate loose riveta. Examine the painted portions of all vehicles to see that the paiin^t has not been removed in any way. Direction for inspection and care of motor vehicles and the r^^el and cart are given in the haadbooks of the respective vehicles. A report of the inspection covering all irregularities or evidra^k^ce of neglect on the part of the gun crew should bo made to the batt^^ry commander, GENERAL NOTES ON CARINO FOE THE MAT&RIEL. The more time artillery materiel spends in the repair shop "^the less time it is available for firing at tlio enemy. The battery j^^er- sonnel should keep their materiel out of the shops by giving it -*fie daily care prescribed in the regulations. Tnis is the minimuDi. Don't neglect limbers and caissons. Bearing surfaces and "^he sleigh slides must bo maintained clean and free from burrs, scratci"**'^, sdbvGoOgIc IST) ate. Elevating and traverAiiig fp'*^'^ taunt ht- oprmted to the extent {ifUieirnins and oiled daily. Sec that s(-r<>w» ami nut» are tight. Bust is the starting point of neriou» injun'. Ml bearings, and other surf aces in contact, derating raeks, screws, elf., must he kept dean and oiled. In case mud or other dirt gets on them, do not wut, but clean them at once. Wheel axloH shouhl )k> periotlically ennuned. Always before and during a jounin- the>' should be greased. Cleaning and lubricating materiel furnished hy the Ordnance Department only will be usetl. Doii't let water get into the oil and grease. Not only all the numWred oil holes must l>e oiled, but all other bearings as well. Care sliould he taken to remove kerosene before lubricating, as the presence of keroHcne under lubricating oil will cause rusting. As soon as wear becomes apparent on any part, see that a spare is BTfulable. Replace it in due time, and n>lurn the worn parts to the mobile ordance repair shop. Recoil mechanism. — The normal quantity of hquid, and gas preesiire, must always be maintained. Inspection of the alignment (rf&e sight should be made daily, or oftener, in case of suspicion. Replacement of such parts as are supphed to the batteries may be made by the battery personnel. However, if tiling, forging, riveting, etc., are necessary', send ihe gun to the mobile ordnance npair shop. Cabe op oun BOBB8. — The wear of gun tultes does not depend ntirely upon the number of rounds fired, but ven- much upon the TCy in wluch the tubes are cleaned, cooled, and cared for, and upon ihe greasing of the rotating hands. Copper fouling is a continual source of trouble, and constant iffort will be neceasari,- to prevent its accumidation. Tlie ideal aanner of using a gun is to waah and grease the bore before each hot, and to clean each shell before firing, and to grease its rotating Md, leaving a little on the forward edge. This will not always be wssible, but the ideal should be always kept in sight. Howitzers lever become copper-fouled if properly cared for. A pail of water Bust be kept at each gun and at each interval in firing wash and ?«ase lightly the bore. Too much grease will cause smoke. Once iday the breechblock should be dismounted and cleaned and oiled, t is also of great importance, whenever the rate of fire permits, hat the cannoneer looks through the breech before each loading to »8ure that no bits of cartridge case or wadding or unburned powder ■emain in the bore. The presence of such foreign matters causes mprinla in the walls of the gun, and sometimes prematures. During ught firing, use the sponge. sdbvGoOgIc 156 To examine the bore, hold a sheet of white paper at opposite md, so as to reflect light into it. Inspect it from both ends. To examioe a particular spot, introduce a short candle at the end of a flat stick. The life of a gun usually depends upon the erosions and wear at the forcing cone, or beginning of the rifling. Erosions are slita made by the hot gases. They appear as wiile, streaks with smooth edges, and are usually near the forcing cone, They are more likely to bo produced by the heavier chaises and & fast rate of fire, therefore use as far as possible the lower chai^ and let the howitzer cool off between rounds. The breech should not be opened for at least one minute after ■ misfire. All work on recoil mechanisms, sights, and other optical equipment should be done in presence of a commissioned officer. Brake h^ndwheels must not be struck or kicked. Do not strike any metal part directly with a hammer; interpose a piece of wood, copper, etc. Do not unnecessarily expose ammunition to the sun or heat, nor load into a warm gun before time for firing. If this is done, erralac shooting may result. When not firing, see that the firing hammer i> locked. When traveling, lock the carriage to axle and the slei^ to the cradle. The decomposition of powder may be detected by the warping of the sides of metal powder boxes, and by the odor when the box is opened. Ammunition is also very sensitive to dampness. Reifr nants of powder composed of fractions of charges, which have been removed to make lower charges, must never be used in the battery, but must be sent back to the rear. Never load guns in advance. Slight bulges do not put a gun out of service, but when pronounced, the ordnance inspector of artiUay must bo advised. Wlien shells, etc., burst near the gun, make sun that the tube has not been struck before firing. If serious erosions occur in the vent, change the mushroom head. Don't try to turn the cross leveling screw without having loosened the sight-support locking handle. This remark apphes to all similtf devices with locking screws, etc. When not in use keep the muzzle and breech covers on the how- itzer. Keep the spare parts coated with heavy grease and wrapped in paper. Don't attempt to ram a shell out of the bore, unices it comes out easily by gentle raps; send it to the mobile repair shop. GENERAL INFORMATION. PAINTING ARTILI.ERY MAlilBIEL. Ready-mixed paint for this purpose is issued in 2J-gal]on cans, and | is appUed to both wood and metal parts. The paint of the following i colors is for camouflage: Black, cream, green, and yellow, Theohvt- nr.i;.d.vCoOglc 157 dnb is for the nonvisible surfaces. Spcf iai quick-drying olivc-drab ptint is also used for surfaces where time does not permit of drying the ordinary paint. If the paint is too thick, turpentine should be ' nsed as a thinner, but not to greater extent than 2 per cent by volume. All steel and iron nonbcaring surfaces will be painted. Wearing and bearing siirfacee, such as teeth of gear wheels, slides, and piston roecial gloves must be worn. (1) Commence by freeing the objects from dirt, lumps of earth, and liquid with wooden spatulas, rags, etc., which wiU be buried imme- diately after this operation; they must never be burned. (2) Sprinkle a continuous layer of dry chloride of lime over the .parte of the equipment that lend themselves to this treatment. After two honrB wash off the layer of chloride of lime and rinse thoroughly. It is imperative that aU the chloride of lime be removed in order to piweat the deterioration resulting from the prolonged action of the ehloride of lime. In the case of ammunition it, is imperative to pre- vent particles of chloride of lime from being introduced into the bore of the piece. (3) Whitewash soiled parts, which do not lend themselves to qninlding with dry powder, with a thick paste of chloride of lime nuwle &om 3 volumes of chloride of lime and 1 volume of water. After two hours wash off the chloride of lime. (4) The delicate parts of apparatus, such as breech mechanism, sighting apparatus, glasses, etc., which would be injured by chloride of lime, should be cleaned by dry polishing with rags. After this operation the rags should be burled. (5) If one has large quantities of water at his disposal, he may, in ;tiie place of chloride of lime, use water. The water shoidd be warm, [bat never boiling, and large quantities should be used. This can [not be done in the case of greasy articles, where only chloride of lime [ean be used. (6) When it is not necessary to immediately use contaminated .t6riel, or when one has not the above means at his disposal, it may considered that the handling of the materiel and apparatus Is not lus .after six or eight days. It must not be forgotten that practically all fabrics and materials, 3 wool and cotton, rubber, and oilcloth, can be penetrated by raostud gas if sufficient time be given. The mustard gas actually lolves in these materials and penetrates them by a slow process of diffusion. In general, it may be said that the greater the length of sdbvGoOgIc 160 time required for penetration the greater the danger in wearing these articles after they have been exposed for some time to mustard gas. Attention is called to the fact l^bat rubber boots which have been worn in an area shelled heavily with mustard gas may be a grave danger to the men who wear them several days after the bombardment. Fabrics thoroughly impregnated with boiled linseed oil will resist penetration by mustard gas for over an hour, hut it must not be forgotten that after this time these articles are dangerous because of the mustard gas that they contain dissolved in the linseed oil ami that they must he destroyed or the oil renewed. I TKAN8F0RTATION O? ARTILLERY HATiMEL AFFECTEO S (a) The removal will be effected by automobile units whenevM possible; if horse transport must be used, the route will be carefull; reconnoitered in order to avoid infected ground. (b) The materiel will be disinfected as thoroughly as possible befoi its removal, REPAIRS FOR FIELD ARTILLERT UATfiRIEL. Instructions relative to making repairs to field batteries and fu^ nishing ordnance stores and supplies for them will be found in tb general orders issued by the War Department from time to time. Instructions in reference to the care, use, and repair of delicat instruments, such as sights, telescopes, and range finders, will bi found in General Orders, No. 47, War Department, Washington March 24, 1905, and in O. O. Pamphlet No. 1795. sdbvGoOgIc PART m— EQUIPMENT. The following table sets forth the total equipment of one motor- iied T^ment of 155-nim. howitzers, model of 1918 (Schneider), on war footing. Under heading "Where carried" ahowa, in general, 'vbere each article is intended to be carried, but the commanding officer or battery commander may use his discretion as to the dlsr position of any articles for which no particular fitting or receptacle ia provided. The following abbreviations are used to indicate the vehicle or dieet in which items are carried: A. T On anuuunition truck. A. R. T On artillery repair truck. A. 8. T On artillery supply truck. B. Ji R. C In bolt and rivet chest. B. C In bench chest. B.S. B '. In bar stock box. C. On caisson. 'dm On cart. In carpenter's cheat. s On 2-ton Nash truck chassis. C L On cam^ie limber. ~ H. In cleaning materials and sraall stores chest. C. W On caisson wheels. F. C In fluid chest. I]g. C In forge chest. G. C In grindstone chest. ^ On howitzer. H. C , On howitzer carriage, L. R. T On light repair truck. M. T. B In motor vehicle tool box. 0. B In oil box. O. R. C In optical repair chest. P, C In pump chest. B. In reconnaissance car. Reel - On reel. S. 0. C In staff observation car. .. T. K - In saddler's tool kit. T. B In trail bos. Ifel. T On telephone tnick. T. K In tool kit. T. T On tank truck. H-T. T On 2i- ton artillery tractor. i_T. T On 5-toa tractor. W. 8. C In welding supply case. If. T On wireless truck. (p_ T. C In welding tool case. (161) ,db,Googlc l»4iiiD.lioirltiar o*n1w* UmlNr... ISItmm. bovtUtf nlnoD C*r,lUIIol)MTVstlon TtieUt, Brtl llary , & Truck, idnlHi Amtx^nca (K*dlcal DaMTtmMit) . .. CBr,&-^snntUllM- Tsoto and ■wwiortti tar bonKiar and banllMT cBiilat*— CootlDuwl . Loadbic nminw aniK HM*ara(IUt«rnp) PindrlRi Pi fuwwiw naann mt« for RMTvoIr PKMin iM" adaptcn Banunar Hrapi RMWotr lor oompremd ■■■ with kdiptcr RMnetlng ropa vlth bloaki Bcmr driven (S-lncb blaito) Bonr drirer tl^4ncli blada> Spamw furiaskel rlni (atla houilDg) SpaniMn lur pumpa ToSllts aaeW eaculninii 1 dilR ^tfv> tironHJ 1 drift (inLUlbranifl),^ ,.,.... .......... I IUa(S iDChttI, 1 iquiire, dsadsmootli) 1 flla(glDcti», hoodliraooib I j»meblsni^)V^y.y.V.\"\y.'.'.'.'.'.'.'." "'.'.'. lpllsra.irlraeultiii«(li Inches) 1 screw driver cn«, tlclicli inwlliut locki ' i Cap Ifttcb pin, rndio liou] 1 1 Coimur-ncoiipblonllnrra 1 1 Coontn-RCoi 1 piston lulirinlon I CounlH-ncollpLitoa nut Couuter-cecollplitoD qui linen CminUF^Moll piston pirklDK inrlniis . . . Couum-ncollpliloarubbrrloltawtr. .. CouDtrr-ncoll piston nibbrr padi Counlcmcollrod luLrlcMon CouDlM-CMailrod nut Counwmcollrodpaeklniriprlnira CouDlfr-nccrilrodmbbprrollamT CounWr-ncollroil rubhit piuls Counter-ncoll vilvfa FililUK nmllr valvr FIIUdii pliin Pirlnit mcohinism slrikvr FlrlMMfelytetchM Oin cocki, eomplpli Ouketa, M by IdU by 2 mm. (ropiirr) .. . OHktU.No. 1 OajkrM.No.J Ouketi.No.a Quktts.No. lU... OaikFla.No.li... Ga|!Ccockvalvf(l LatchspringCslght portshulwr).. D.(buIlerrodj m. (brake dVtaiis).'.' sdbvGoogIc Nmnlw ur crguilu- Amda. B. H.C 8.C. B. ~!i' as u u 1 10 ISO 1 B 13 s u Spue puts-C«ilfnD»d. ( For ttf Mn*V')-C««lniied,' I t A. A- A. A. 1: A. a! A. A. a! A. a1 A. A. A. A- i A. A. A. a: A. A. T.'.'.'.'.'.'. T t'.'.V".'. T T T T ?::::;:: T T ?::::::: T Ie;;; T Ie;:; If;;; T ?::::::: T T ?:;;■::; T T ?:-■:::: T T f;;;;;;; 1;;;;;;; ?::::::: rv I 1 e u a 24 24 18 1 A. .T A.B.T \ t'±:::::: A.B.T i 48 i A. t A. Ill ■W««h«r5,M.ibr*0.9h}-Inim :::::: '^t f ? .yGoqgle i 167 ( rar ilti •cmwrlFt. Bknjrerini Krev9([arhandliueMttcr) SbnilDicrcwi (for hand tuHsetUr) VBlre!«t(!»skel(roratrpump> Tooli and ■ccestorlei lor esntaf* Ilmbm. Cue> [orlliEhMnliiK equipman t OnaMboma. WaUrjncbackrtaicanTuI Span {Mrta for carriace llmlMr. Aile cap. comolate Collar dIA bolts, with nuts OoDiioctliitrpolflbEn^e..... ...^......,..^., ConiwctliiR po]« bliue pbite Handy oiler (0.5 inch) Hlnitepln Hlneo pin nut .,,.., Hub liner (Innwl Huh Uner (outer) Pintle yoke rivet PoleaupportLDfEspTinv Prop cliain (complete) FIni, split (0.3(0 (U) by I inches).. . P)ns.spllt(7by 70mm.> Salety cbaln , complete Screws, nut lo^k iFbolIni complete (1,240 mm. diameter) Tools and accessorlei lor bowltier caluon. Fuieb. (irlpatraia Hatchets Lantern bracket pads Lantern straps, . , ,. Limber blanket straps (Ion;) . . Limber blanet straps (short). . . OH caps (2-eallon) Pick handle straps... Picket rope straps . . . cc-nod=,Googlc Bquijynunt for units ■mf a Ttgment of 155-mm, ktmilter molAvI, model of 1918 wmU eompormg a rtrnmenl of ISS-imn. hovMier r {Sdrntider) moUmita, on viot footing — Continued. Ni^ber^orpuiU.. Article. SSS B. H.C. B.O. .. CIU8. slon.' sa n n M 1 3S 1 1 75 34 aa IB w 1 I 38 aa 3« 30 3A 72 1 1 son— Contlmied. C IV IV IV Spue p«jb lor howHUT ealMon. » t i A i 1 A A A A A A A A A A A A E E E £ B E E £ 1 \ \ 8 S s T T |::::::: 1;:;:;;; I:;::;;; T ?:;::::: T T |:v::::: t'.'.'.'.'.'.'. ;::::::: T ?:;;;;;; T 1;;;; T !;;:;;;; T 5::::::: ?::::::: ?;:;;;;; |::::::: Boiti (D.aaSby 2.5 tii'che») (ior pintle bwiag). . iSlBaS'?^?'^*;;;;; Nuttiplli'r! ■■ ^ V ,- ■ ■■-■-------"- Pnsis'pi ii'u.ii.-, i,j u..-.ii.Jii, ...'...!;;!!!; !;::;; Tius.apUtfO.I'J.il.y Tinoh) Fins.spltio.l.Wb J 1,75 lochosl P ns, spit (0.203 by 1.2,1 Incheal gP8,WpBA!o.Wby3.«iaiQcUM) Kiu,typeA(0.Blbyl.875lQ(:hiH) ,db,Googlc EqvipTnent for unite compownj a Ttgiment of 155-mm. howitzer matiriel, model of 1918 (SeAneider), motorized, on ivor/ootinjr— Continued. nrMTor^niza- C. 8.C. S. Span parts tor tunrltier Pins, type A (0.7S4by2,slnuSea)... PinB,tjpBC(0.88«by3.lMiiiche3)... PIna, type 0(0.61 bv3.ias Inches)... Padlocks No. 850, with clevis , Piotie with bearing (complete j PinltelBtehes "'intlelatdi pins. . Pintle iBtchiprlnga Plntleapringa Pole, mainectlnB (complete) Props (mmplele) _ Rliels(aopper, QBt1ieBd)(o.2Sbya.s;siiiiili)... Sciewj (0.37S by l.K Incbai, connlarsimk head). Screws (a.7S hy T.eas Inches, Oat flUsCer) . . Segment racks Spring bolta Spring bolt hwdi Spring bolt head locks Spring bolt wiBhera SprliiK entohei (tnmlenient (astening) Tip bolts (0.37S by n.S Inch) Tap bolts (0,S7S by 1 Inch) Washers in.a-) Inch) Washers, loc Wheels (< !k (0.3; 5 inch).. Wheel [astenlnea (campleifi) . . . Wing nuts Wlngnutpins (lor apron) Wing nut ptos (for doors) Wing nut pin washers Slcbtlns equipment. Bore aieht J (bteech) Boresightslmuule) Qunnet's quadrant Lighting equipments (complete) I^ai'hlncluding- !h lamp with biacket oind an^plogl f lamp with bracket cord anil plug, h lamp with bracket oord and ping CDDtall illampw.. spindle lor aiming lamp- with 4 dry cells. imn cDDtainBT ivsl lamp with bracket cord 3 spools [or lamp cords r"anoniniical(hl3 Panoramtc sight extenalcms I'eepsLijhts (juaiinuitslghti, model of l»g (Schneider) Wrench for quadrant sight tirooket boll Spare parts lor slgtitlng equipment- Dry cells (for lighting equipmentl Lamps (for lliiht Ing equipment) Panoramie sight QuadrontslghC, model of 191B (Schneider) Ilbassli equipment tot 3-toa Nuh truck Note.— A mmunitlon trucks, ommunltinn trucks equipped for passengers, tank trucks, telephone Irui'ks, wireless trucks, artillery supply trucks, and arttllery repair t nicks are oil equipped wHbl-ton Nash truck chassis. ,db,Googlc Equipment fw uniti eompoiing a rtgimtnt o/15S-mm. howitur maliritl, model o/.tSlS {SAneider), moUtmid, on tear /oottnjr— Continued. wpHorguilu- WImts anted. when Tcqulnd b C»ll^L . Chains, noiuUd (minplBt*) Cover, radlBtor (rundihed vt ■pKl&lHrYirs). Cover, searohllgbt Eilingniiher, Bre, Pyrene, quart alu, Oiled, Ibiacket flhnlIg(Ab7lllni'hl .;?«« ("ic . . - ^nick !■ equipped wltb Cbrk dltk wbeeb). Oenerstor, acMybme, Solar No. 1013B (oom- "'— '—'■idlng bracket MdbalU). im^tte'. 7, W. T, 8 Blgml, hu ill.saby Hinohos)... 'to(Hncbi.!!.".'!.".";;i LBbers, look {(iJlieli). . . Elum, No. E3 Warner, No. lailL diiveT's seat, «ltb itorm apitm ind dde curtalna. Wrench, hub cap, No. 31773' Bodr oqatomi umnimitloi ~-.—^f , ■ennis. tank tracks, t«lepnono trtuks. Ion tmeks «i|itlpi nnd U/t p«a- inonotmcks. Buckets, canw, water Cans, 1-galIon, safet; _ . Covers, canvas Hatchets r ammunllioii tr L«nteni9, complete with globe and wick ICats, coma, loT floor and aides, seta Uattocks.pick Oil (OMdluin fas(dbu eugiiM), gaUoua Pads, teuton bracket Sbovals, Ifog handle Shovete, short baodle Straps, a incbea kmg, style AV, 7 hoke Strspa, IS inches long, style AV, 7 holes Straps, 22.7S inches long, style AV, 7 bales. . . Straps, 15 inches long, style A V3, 7 holm.... Straps, lantern ,db,Googlc or pw or^BoUft- trueka naM ai BtaU, detochalile, M Addltloiua bodr e Cerriet, barrel, complete DnmuT rargHaolJae,S5galloiia„. ..,._ Pampa, gBBoliite, rotsr; hanil, with 16 leet ol mbbei hose. Body CQUliiiacnt for artillery sapplf trucks. ter, canvas l-KBUonCfor aa, lor body ,e.iolinoe. Btrap lor ax hf^nrfip ^ Straps lor halchet handliH Strap, lantern bracltets Btraps tor pick ax hahdla Straps for short handle Bhoveb Btrapi lor water bucket Vice, ProntlsaswlToljaw, complete. Including— (Carried by artillery supply trucks as Bales, model 1S17 BaoklM, bar, lODgaelesa, Bu^dea, rolliic bar, f-lHUi, mmiu. BDcklM,roUer,ll-uim, bronie BuOklM, wire, l-lmdi, brass Bnuh, varnidi, No. 4-0 Brushes, vamlsb, No. S-0 Buttons, style No. 1, with washers. Block, snatch, for l,2fr-lnchrope... Block, tackle, double, 9-inch Buckets, water, galvanlted steel. ■■ lacli conialDlDg— Scan!, I Eallon capacity (to contain light slushing oil) 5 ml, light slushing, gala... e CADS, ) EBllon capadty: 1 will contain cos- mic No. SO, soft; I wiilcontaiu lapan drier; I will contain neai's-foot oil: 1 will con- tain standard O. D. paint; 1 will contain special quick drying o. D. ptinl: I will cosmic, m SO soft, gallon driar, Japan, gallon. nil nfol'aJnnt imll, loot, gallon iiu sperm, gallc- paiat, standard p^t, standard O. O,, gallon paint, special quick drying, O, D., gallon.. ,db,Googlc Equipment for unit* eomporing a reijiment of 155-rnm. houittar motiriel, model of ISl. (Sehnader) motorued, on uar footing— Contiiiuod. Number ur orguilu- K." Loula eatrlnl hj artlUery luppl)' tnicki — Continued. LOAD "*"-! papers Needles, harness. So. B, papcis F'lier=. wire curiioB.s inches _ fluKs.spark.silJieti.S. A. ICsiaadBrd-Tiian", ""} 1 14 ,db,Googlc 174 wnriCR Bon. Loads eaiTled br,artll)nT snppl}' tmeks- rtUIcn 81 Bope, nunlts. I IniJi diameter, 150 IMt Iodk. Rope, mimita, | Inch dlsmfier hemp, Int.. . '" — UBiidbnrtB.hra5S.n.5lBch,No.lO,_poa a uid bum, brssa, 0,629 Inch, No. Soibbanls, bolo, modsllM7 SpcngM, (Inches Screwt, wood, flal bead, 1 Inch bran, Nol i gross packuB. aheepsliiiipTiUlwoolan ' Support.dMat... TBpe,MoOon,i4nch,i-po Tape, robber, f-lnch, (-pound ro-_ TukI, ooppar. No. 13, f pound paper. . I Tviki, capper. No, an, {-pound pRper. , I Thimble, alomlnum-Uned H(e«l,slHfJ ' Tbroftd, carpet No. 18,olivBdrab,p [nohisi^ ... blades, dran gage , caJriage, pricking, compaas, a-lnch creaaer, double, lit^Dum-i.itie clamp, stitching Eugcdraw, brass without giiird.. handle, peg awl, «lth wrondi hammBr, So. 3, riveting halts, paieut awl, with wrendi knife, splitting, Wnoh fcnite, alioo, broad pirint knife, shoe, squBio point needlecaso, leather noodles, glovera'. No. 3, paper. needles, harness. No, 4, paper ,* neodlBB, hameaa. No- B, paper 2 needles, harness. No, S, paper 13 needles, sacking, assorted 1 nippers, cutting, lO-lncA I plkrs, 6-lnoh 4panches, hand, round, Nob, fi,T,S,i 1 punch, revolving, 1 tubes, Nos. 4, 6, 1 palm, sewing, leather, 1 rule, boxwool, 3-foot, 4-lbld 1 shears, l^-inch, bent, trlmmors 1 screw driver, 3-luch blade 1 tool, edge. No. 1 1 tool, edge. No. 3 ,db,GoGglc Iioads canted br arUlleiy supply Block, duplfli chain, Y, i T,, 2-ton Chest, fluJd,"B" ContHinlng— 30 cans, !2i gallons cspadt; (3 van cor cup Ereftss, 7 wt 11 contBiQ transmlssloi JO ^11 contain easoUne engine oil). 7J greaso, cup, ?»Uo— 11, transmissiou, gallons . . 2!> oti, medlmn, Kasoline engine, gallons. . Chests, supply Chest, sprlBg Straps,52-lnBh,atvleDV, ID holes 8tr»ps,34-Inoh, style DV,8holes Support, cheat Waste, white cotton, pounds Connecting rod, nomplete Connecting rod i^ton idn bnshfne Connecting rod bearing (upper halt) Connecting rod bearing (lower hall) Connacting rod hearing shim (plain) ConnectlT^ rod bearing shim (laminated) CoonacUng rod bolt Oil pan gasket (right) Oil pan gasket (lett) Crank shaft shim Crank abaft startiiu crank J aw Crank shaft center bearing (upper) Crank shaft center bearing (lower) Ciank shaft front bearing (upiier).- Crank shaft front bearing (lower) . „ (Ian Crank shaft rear bearing (a|>per) .. . Crank shaft rear bearing (lower) . ^•ift ^B^ bontbaadng^^dnt (iamlnated)'.'. . &uik shaft rear bea^^ ^dm (lanilmted) . . . Valre chamber plug (Intake) . . Valre chamber plug gasket. . . Intake pipe gasket Piston (ata Stuttng crank oltitch StartlDg crank shaft spring. . . Valve (exhanat and Intake)... Valve spring Valve spring retainer Valve spring ret^nar lock Valve tappet Valve tappet adhiatlng screw. Valve tappet ad Water pump, a Water pump pi aplete... Water pomp packing nut , rear (left-hand thread) Water pump packuig nut, front (right-hand thread). Water pomp i . Starting crank assembly , Starting crank swivel Breaker, complete (cloekwlM) . Breaker, spring (long Dat^ cylinder gasket... Oatl r (platinums sdbvCoO^lc tapmerUfor uniti comptmrig o Te^iment o/ 155-mm. Aoutizer maUnel, rrcdtl of 191 {Schneider) motonied, on warjooling — Continued. Iioadi arrted hj ■itUWn' lupplir tniclu— I " B-i ■'— continued. RreakeFTDClier arm (plaUnum contacl) I Breakfir [Imlnj; lever complete with cams , Breekerendcep vitb short dtcult brush Distributor piate, complete Distributor plate collector carbon brusb nistrlbulor carbon brush with apring . Sparkplug {Titau. j'lnch) Spark plug gasket Carburetor, complete (BtrombergII-3) Hlgh-speel needie valve Needle valTB „ Strainer Strainer body Strainer body drain plug Strainer body stud Tbrotlle stop set screw ^&Ae&Tl^tia^a'".',\'.\\v^\v^\\\v^'.'.\\'.'.'^ halt ball bearing ■nor flange gasket (upper) ■nor flange gasket (lower) ■ ivnumtor oore, complete .' I I Radiator inlet hose i' Radiator brace rod (forked)'.!!;;!;;;!;";;;;!;!; t Redlalor brace rod end (Iront) ;.. > Auxibarjtank to gasoline tank tube I Gasoline tank cock ! Gasoline tank fliler cap ! Clutch iirtve plate (+flpiine);;; ;!!!!!! !!!!!!;;;; ! Clutch facing ......„„. : Clutch lever operating collar bearing I Clutch spring ,.,-„,.. : Clutch throwout sleeve thrust hearing i Clutch brake lining : Chain 182 links) t Layshalt drive gear Layshalt third-speed drive gear Layshalt flrst-speed slide gear Layshalt second-speed slide gear Reverse gear Reverse rocker tube, complete < Spline shaft drive sprocket, type 11 with gear 301&5II and screws. I Drive sprocket gear tj'pell, used with sprocket 35419, type 11. I Drive sprocket screw gear, used with type II S rocket and gear only, irential case bearing cone and rollers ■ Differential bear assembly, with housing, com- plete, front and rear. ■ Pmion interbeariog cone and rollers ■ I'lnlon shaft sleeve and bearing cup Pinion Shalt outer bearii^ cone and rollers < Steering knuckle arm, complete (front left) Steering knuckle arm, oomplete (front ri^t) Spring rebound clip (nltbleal, rear) Spring shackle Spring plate (upper) Spnng shackle bolt Spring clip holt Front and rear spring rear hanger hushing Steering knuckle felt Steering knuckle pin bearing eono Steering knuckle pin bearing and retainer cc-nod=,Googlc iquipment/or unite wmmMinj a regiment of 155-mm. hoiviUer nuitiriel, rrwdel of 191 S {Sehneidar) motoriztd, on icur footing — Continued. Nombcr pel ugaalu- d by artlUary BUppI; trucks— Wlieel arlTe pinion (Bock3£7|. wWl drive pinion (Bock 31S). Wheel hubcap beEirinK assembly, large bOBiing assembly, small ^iiiMl faralce UKhor sptlnx Wheel brake release spring Aslc propeller shaft with universal Joials . . . OniVQissl J Dint casing oil plug Spring, uom piece, Spring, main leal avesi (can be used I ibound clip (filth leaf, fr n iiBEi uearing, Timliei], outer.. Felt washers; DiOerential housing cap felt Bearing ca" ' '" — ■" " ^24 by li [nctios, hexaKmhead. 16 by Zfincbes, hexagoD head . . m by ij inches, hexagon bead . . IS by 3| Inches, hexagon liead to ™>~ -I iochESpbeiasonbead.. insbci, beiogon head .. 1« by U inches, square head mi " ■- — ?hes, square headmai -18 by 2J Inches, ! -I6by ifiHnches, , -16 by 1 i inches, carriage Pipe cannuction.^: 1-18 by 1 A inches, ^ flS by l2 inches Cap screws, hexagon head: Vh by 11 Inches.. PlShyVlinchei.... hMbylllnches... ip screws, standard: llibyUiDc) sdbvGoogIc B. B.C. ' S. C. Cap«m«->^. =iiini1.irfl— rnnliniif'l, Kti-iiisis:;::;:::::::::::::: 1-21 by 21 Inches Vllbyllnch iV-iObyZInchps 1-13 by 1} Inches 1-20 by 21 Inches i-SObysWhw Cap wroirs, aillstn head : No. 14. ZQbvJlDch.. i-MbyJinili j 28 by [i inch j-aobyltoch >ri8 by 11 Indies M«hlue Ktrw: No. 8. 32 by I Inoh, round heud No. 10, 32 by t iDcb, round head. . . . >Jo. 14, M by J Ineh, round hiwl Na 10, 32 by Ilnch, llal bend No. 10, 32 by I Inch, flat heafl N'o. 10, 24 by llncli, flat hisd Wood screws: No. 10 by I Inch. Out head No. 12 by IJlnchea, flat head Set screws: TV-l8byilnc!h i-ao by] inch, headless A-IS by I, iJtdi. drill held screw . .. . lV» by li inches, drill head screw . iVI* by S) inohes SESSSS:.: „.KS.'.'— i-ai by ^, mph VlshHinch::::::::::;:;:;:::::: k'SbyAiiich f-2Jby Aimh (led luuid thread)... fr-'jobjjin^ii::::::::;:::::::::::: i-13byilncli f-»bj}lnrh i-iebylAinuhBi i-14 by H inch (left hand thread)... i-'ji) by liinthos.. .'.!!";;;:; ;";:;;; !-16byHinch. M-lby A inch A-20 by I* inch;i;'.:::;: :;::;::::; S-I3byiyn.h i-aobyJlDch !-a)byAlnEh i-lSbyUtnch j-lSbylAtnehes f-ia by ilnch t-U by lA inches I-lfl by ItV inches Il-W by aj Inohes sdbvGoogIc Equipment far uniU com^xmit^ a Tt^ment of 155-mm.. hinaitaer mofdneJ, modd of 1918 (ScAneufer) motonzed, on uw/ootitij— Continued. "^^^ Loads carried b; aitUlcrr supply trueka— gSbyAinpli 24 by i Inch _ 4byAliidi i-20by)lnch }-lB by lA inches 1-Mby ItmehBs 1-20 by If, InohoK HShyHinph 1-8 by lA inches Machine screw nals: No. 10, 32 by T^ ineh heiagon— No. 12, 2lbyi'[lnoh, hexsiiim.. No. 14, 20by Ainch.beJcagon.. No. !0, 33 by lineh, baiaBoQ . . . No. 14, Mby Alncb, heragon.. A-2i by I Inch, aquare Mo.S.aabyHineb, sqaara No. 10, 32 by I iiu^, square. - . - ^ No, 14, Mby jinch, Bqaare iV-20 by A fneh, winged nnt. .. . i-32 by jinch, onion niit i-18 by 5 inch, onion nut Cotterpins; ■A by I inch fbyli inches ly 1 j inches _ ly 2i indies bvljlnches pins^ Jbylineh A by 1 inch... SliyiiBdi ibyliinches A by lA indies iV bt 1 J inches ^,_^tbyHlnch bylinch bTHinch by i Inch by} Inch. by I inch by If, inohBB i by i inch tby li inches A by 2i inches ("byltlnehea — . J by If inches. Taper pin!: Xtylinch Xby llinehea.... -.,,., A by 14 indies.. H by 11 inches I by li inches..-.. * by Hby i inch^Woodruff . .. . J by iV ! inch, Woodruff I by A by i inch, WooiJrnfl. . . . Any i by ftneh. Woodruff Wby \by (inch, WoodiQff... A by Ity IlndiLWoodniff Ibylbyilndi.Woodratr A by f, by I inch, Woodrofl... fbyAby I inch, Woodruff... by } by 2i inches, straiKhtkey by 1 by 2] inches, straight key sdbvGoogIc &I. Loads carried by BitUmy supply trnctcs— LDiD"B-i"— continued. KeyB — Continue d. ■fiby-f, l)j liinehes,Btrai«htl(ey f byfljy 14 Inchoa, atraljiht key |by jbHJ Inclua, round nose key. A by i by 3 inches, spec iaL A by I inch, button head iby j ItKli, button head AbylHnchfs, bntlcHihead._ I by I inch, button htad I by Ij inches, button head I by 2i Inches, bnttim head A by li inches, ImttoQ head ) by a Inches, button head 1 by 1) melisa, bnttiHihettd * by Zj iochta, bullrai head Ibyllnch, bultcaibBad J by ilncai, flat head rivet A by M Inch, tubular A by f inch, spilt rirel i by 1) inchaa, wa*!Qn box Drain cocks: J-ineb BnwenereaaecupNo. .000. Winkley grease cup No, ,000 Winkiey greisfl cup No. .00 A-lncii, s!a. E.,lii!bt ^Inch 8 A. E iifSt A-inch, S. d. E., heavy J-tnch, 8, A. E^ heavy A-lQCh, S. A. E- Siacii, s. A. e"'.; !!!■"!!! !'"!!!'".;;!!!;;;; DPh.a.A.E j-lneh,8.A.E j-Inah.S.A.K « by li by Ainch lock washer lAoy 21%* inch lock washer Washers: 1 by J indi. No. IS H by i J by J inch iby iSlDch, No. 13 Hbylibyiinch llbyafinoh, No. 28. JbyA-lnch, No, Ifl-lS A by I inch. No. lfl-!8 HbvH inch. No. 16-18 SVy H inch. No. Ifl-lS. H by 1 Inch, No. I4-lli A by i inch. No. 14-ia Fell waaiMis: 21 by 2i by 1 inch, felt 1 V'i V lineh, fell ^in^ Pintle ports;" " " Pintle towing hook . . , Pintle hook iatch Pintle hook iBIch spring sdbvGoogIc Number pm orjantzo- Loads carried hf artlUery supply trucks — -\" — contiDUed. i Pintle parts— Continued. Pint ie hook nut Pintle spring guide FlntlB Bprine Pintle split pin Pintle latcli pin Spare parU'Cor liglitiilg equipment: Glass for side light Oil side light wicfc Bod glass for tail lamp. Spare tools and aorossorlee: ExtlnKDisber, fire. Complete, with bracket, "Fvr-Fyter,""'' " ' ... ..j~, "t7ra>a,"ilTequal. Liquid, ^letw, In quart cam Straps, 13 iDBba lone, sMe AV, 7 holes. .. . Stiapt, IS inolM leag, strk AV, 1 holes. ... Straps, 21.7S tnchnlimg, style AV, T holes. Straps. IS InChM lai% atfle AVB, 7 holes . , i, second edition, Ignition wire (cylinder No. 1).............. Ignition wire (cylinders No. 2 and No. 4).. Ignition wire (i^liiider *'- ■" Spline ahah titird speed di Spline shaft sliding gear Spline shaft third speed gtar washer (front) Drive sprocket gear, type I, with sprocket 3HI», lypeir. Drive sprocket gear dowel bushings used w type I sprocket and gear only. Drive sprocket gear screw, used with typ sprocket and gear only. Spline shaft third speed gear washer (rear).. Spline shaft ballbearing (froptand rear) — Shifter lock ball spring Shifter lock ball spring follower Shifter rod (first and second speed) Shifterrod (third and fourth spmd) ' ""-"'errod (reverse).. T!lflerentlaIoq___ DlSerantlal spider... Pinion sleeve nut Steering knuckle arm (rear left) Steering knuckle aim (rear right)... Knuckle universal Joint Searchlight door glass Wheel odometer and hub cap. . . Wheel bearing, Ttmken, Inner . . Tail lunp ,db,Googlc 182 EquipmeTU for unil* compoHng a retrimtnt of ISS-mm. howitzer maUrvi, model of 2918 {Sehnader) motonted, on tear footing — Continued. AddMoiul load canted when the :^ la caulppMl wKta tmclis bavtnt >-tan Nub chassis, moilel 401T-L only, Usrneto, Klannann, Xype n*. geconrl edlUcai, clnckwiiv, with impulse ataitn', rimltlon wire with termiiiBl (cyllnaer No. 1) Ignition wire with termiiisl rayltndan No. I ImlOon wire with tennlnBl (cylinder No. 3).... RadlBtor rod pnd (rftai) SpllDP Hhalt third speed drive raar Spline HhartBlidloi! (KM Anlr' drive shaft (riEhtlront) Aile drive shaft trijiht raw} Axle drive shaft llBfl front) Alls drive shaft (loft rear) rilTctpntla] KBU- (center) riilBrpDtia] aqualltlng gfl 11 Iffercnlla] spider Pinion sleeve nut Pinlanslecvenut, T^imsassenihlv.... ..,_ Plwrinit Imiickle arm (rear left).'. Steerine koucfcle arm (rear right) Knuclile univsreal Joint Uaivenial loliit cover llnner) Univena) Joint bovm (outer) wheel odometer and hub cap Wheel beBTfnu, Tlmkan. Inner Gaa searchlight door elass (Ill mill Ight wiek Oa-nube, rubber Oaa Eeueralor, terminal tube, robber Addltloiul litad aiTttd wben tbc ractment Is equipped with trucks havliic it-ton Naafi chuals, model 4017>F OD&. Uaeueto. Eiscmami, t>-pe 04, second edition, clockwise, with impulse starter, rgnl Hon wire with tennlnal (Cylinder No. 1).... Ignition wire with terminal (cyllndors Not. a Ignition wire witli terminal (cylinder No. 3)... . tipllne shaft third speed drive gear Rpllne BhaEt Hlldlng gear..,.,. Spline shaft third speed gear vatdtar (fronl) Spline shaft third speed g«tf washer (rear) Hpllce shaft ball besiiai; (front and nsr) shifter lock ball spring Shifter lock ball spring follower Shifter rod [first and second speed) Shifter rod reverse .'!!."!!" Radiator brace rod end (rear) Axlo drive shafHrtght front) Axle drive shaft (l^front) ■.,. Axlo drive shafKrlght rear) Axle drive shaft (left rear) strarine knuckle arm, complete, right front Stntflng knuckle arm, complete, Itrft rinion sleeve nut, Done asaemMy Wheel universal joint Wheel bearing, Tlmken, Inner flns >n(rcb[fKht door glass Oil tail light wick Oa» tnbo, rubber flaa gaiieralor, terminal tube, rubber criz^d.iCoOglc ^^1]ere carried. L (Catrlad by artlJIery supply tmcics B.i!i[gned I headquBrters company.) Chast, " Spring" Cheat, rapply Cheat, optfcal rapair e(iuipnicii t Gbest,opdraI iaHtrmnenis spare parti Chest, Barpentor'a, with contflnts as rtsted ni dBrloiid"A." ery repair trnoks.) acidity], pounds BsR lor lorm coal.. Bornarjlanlem Crowbar, 60-inoli Gnil, blftdumlcti's, pounds Caldornoarblde, 2- pound cans... Cable, high-tension, Packard B. A teet. Cloth, c Cloth, e Cloth.e .,- ,, Clamps, cooper, adjustable. Carburetor, complete, StrombetE model li-2, It-Inch, (or Nash. Cheat, grtndatona _ Chenl, miBcellaHBOua Chaat, aprlna Cheat, aupply ""■ sKorholUandriTetB s.macMne, square head irlth aquar BO, by Uinchas SO, by 2 Inches K, byliincliea as, byainches 26, by 3 inches 25, b J S Inches K, by a Innhea as, by 4 Inches Is, 3 ove, with nuts (round head): 100, -A bv 1 Inch 100, Aby IJlncbes 100, jV llnch inn. JhvUiuchM button head: BlTBts, braf Rivets countersunk, 60° bead; ,db,Clooglc Number p«r orgi^iili J load cairtMl when tlie ngtmeiit equipped with trucks luTlnf !I-taii iiD cnsuls, model iOn-F only— Cod. I by 1 in ^1 i by 1 j IncbeB, pounds- - 'i A byjlncli.imuid 1, A by 1 inch, pound 1| A by I) inclieii, pound. . S, I by t Inch, pounds. .... *, I by 11 inches, pounds... 4, i by U inches, pounds. . S, i by ai inches pound! W&shers, wrougnt iron: 2, 1-inch, pounds I, A^uch, pounds S. A-inch, pounds 3, A-i'i'h, pounds i, H-lnch, pounds <,4i-in*h, pounds Chest, Tor Duplex chain block, S-ton Block, Duplex chain, Y. diT.,2-taa Chest, carpenter's, With conttrnts listed under Chest, fluid "D" ■ 4 brushes, iniUit, 4'lncli Bat (commercial). . . 1 brush, varnish, No. 6-0 I box, tabeted, "sal-soda " 1 box, labeled, "sal-ammoniac" 1 borax, poutia................. .... 2 boxes, lor stencil paste 1 can, scroff top, 1 gal. capacity (this Till contain Japan drier). 4 cans, screw top i ™l. capacity (1 will contain borax, 1 will contain cyanide ot potassium, I will contain standard O. D. paint, I will contain special qulck-diy- Ing O, D. paint). contain camouflage paint, t cantain camouflage paint, green, 2 contain camouflaEe paint, yellow, ] contain anzine oil, 1 will contain ttUneasoUne.lwlllcont^nPyrene liquid, 1 will contain turpentine, 1 will contain sperm oil). 1 cyanide of potassium, pounds 1 drier, Japan, gallon 2i pmllnergallpns 2t kerosene, gallons 2j liquid, Pyrene, gallons 1 outflt, marking for, leather ■— — -arkingto- ■ ,st— -'■ 2|oii;s!"_,, . . 2l oil, lard, gallons 2| paint, camouflage, black, gallons. . . 5 paint, camouflage, cream, gallons. .. 5 paint , camouflage, green, gallons 5 paint, camouflage, yelkiw, gallons.. . 5 paste, stencil, black, ounce 5 paste, slencil, white, ounce ,db,Googlc Eipiipmtnt Jar utatt eomporing a rt^ment of ISS-mm. koviUtr maltriel, tiuxUl of 131 H iSdmndtr) molorvtd, on ii^ir/oofinjc-- Continued. liMWIwiBl toad canted wbeii (he n«liii«iit k HDlnM wHh (riKlu hsilu >-tan ' IfMb cfamHte, model «017-Faal]r-lncb (iMchi. I flic, Dal tiBMard, (loiililrcui, iz-lTW-h 1 11all«r, l.S-inch squon brc. 14-liich hsiullc I lOTBc, notlBlil*, "Empire," onmiilfK'i modinHl lor Army use, with ■rrnch. I hammer, rivcilnj, 1 pound 2 ounics. I hammer, hand, ^f^pound. . ..„^......,,., 1 handle, file, alumlniini Ihardle.O^TS square shank, l.ld-li>rh NI... 1 punch, btf* and cnHseridoiililr beaded... 1 punch, Ttail .,...„., . . 1 pfllchel, e-lnch 1 punch, round, a.31S-inch 1 imnchj round, 0.375-lnih 1 punch, square, a.:il3-ini'h Inile, NtxuFood, :l-laol,l-laM I sereu' plate, tnps'jnd dim (I . X. ».) wilh tap wreitch, ineliidlnn chest :i'>tiltt, pounda (ror znediiim pressure and hlidi speed, tin, 30 per cent: antlniDiij', 'iO per cent: laad. 50 percent.) IIUKnetn. Flsenumn, (■ 4 (seeiBHl edlllon, com- plcle nilli impulse starter, clockwise). Measure, copper, l-,)[radtialvdln PluE..'park, Hnch,S. A. E., "Tilon", Rope, nianila, 1 Inch liiamctcrlir 150 feel long.. sdbvGoogIc Eqvipmmt fat wnfl* cant^KMiTiff a n^mmt of iSS-mm, hountter mattntl, model of ISIS (Sdmeida) motomed, on v/ar footing — Contiiined. 1, li-lnohm by 4 f«t Steel, cold ndled, equnie; I, i^inch IjT 4 feet 1, f-lDCh by 4 iMt I, i-incfa by 4fBet^ Steel, Dsim (sbsand ptatm); 1, A Inch by a by 4 foel 1, XiiH:hhy2by4t(el , '—hbjxtjiteet. ibby 2 Sy 4t»t I; ft ^eeUi inch by Z by 4 To by Uliiohefl by 4 feet" by llliiche!iby 4lBet... by amchBtby 4feet--.. ) u Inobei by 4 feet . . . -y 1* Inohes by 4 feet . . . bysllnidMsbrtleet... _ tw 3 UKdug by 4 leet l,ll731iiobKby4feet.... Steel, tornd, roond; i Inrh by 4 I ,liiuhby4reet... j Inch by 4 feet... 1, 1 loch by 4 St»r, tcxil, flat, ti I by Jlueb ny dieec St^il, tooTj Tound, Annstran^ special or 1, ( Inch hy 3 feet ], i Inch by 3 te«t ,db,Googlc 187 ^tipment/ttr wniU eomporing a regimmt of l&S-jmn. howiUer maUriel, model of 1918 (SAnetder) motonted, on mar/oottn^— Contmued. erur vgaulia- >. H.O. B.a AddHJonal load uuried nhen the regtment to egiilpped witb trurks bavlnjc a-ton Naafi etaassla, model 40IT-F only— Con. LOAD "!>"— wnlinHed. Steel. Kyi, Miia™, Arm'troDg "pednl or eqiml: 1, ( inch by 3 feet 1, ilDPlibySfeol 1, A inch byStwt 1, ?,lnrlibya(0Bl Wire, copper. No. 16, B, 4 S.KBgB, spool ■Wlre.aoltat80l, No. IB. E, 4 8. gaee, spool Wnmcb, aHju^Csblo spanner, 3 hj ijbi'cbea WmIo, white, cotton, pound"-' Body equipment lor tbe artlUery ttf/ait Bnckets. <9.nva9, u^tcr, n Cover, ranvaa, for body... Cm, niety. l-Eallon Lanteni, a OIL modlim. , ._ Pads, lantern bracket Pii-Jtsx Bhovel, ihort bandle Straps, lantern bracket Sftap, 12 Inches long, stvle AV, 7 be hatchet, 1 for pickai, 1 [or ax). Straps, IB Inchei lone, style AV. 7 bi short handle shovels). Strap, 2?.75 inc'hes Iooe, style AV, 7 h Stove, Sibley, Body attachments ir tlie BitlUeiy lepalr |-horscpo« r, 110 volt, dlnwt. I.H.T., L.B. T... Cylinder, oxyKiin,2mcubiP[oet capacity (flllod). _. Cylinder, aoetvlenB.aX) cubic test DBpacltyffUled) A. Drill preia, -"'■■ '- ....—.. . type, trlctlon drive: Btock.V Center, p3nl Grinder, bench, viih Hmrsepotrer, IlO-vo dinwUcurrent motor, complete: OuaMl, adluatable ateel A.Jl. T... Pot, water, detachable A. B. T... Switi-h, electric operatinc A. R. T... Wheels, Norton alundum, 10 by I Infh, A.K.T... grain 46, grade 0. i Bearings, connecting rods, pairs.. Blushes, armature Gaskets, irrlinder head Kings, pinen, t-lnch Slugs, pistco, ^inch Tappet, valve I. E. T... I. K. T... I.B.T... sdbvGoogIc Equipmrnl for iaiu rompoting a re^mtnt of ISS-mm. howjtier mat^iel, model of 1918 (Sdmevkr) motomed, i.4lorlathe.. Bolts, I by Sj ini^h (l'. S. fl. ), 12 [op lathe frame, 4 lOr baich irrinder to bmr'h ton. Bolls, ) by a Inch (tr.e. S.J, t lOr Kcnoratinnnnit. Bolts. 1 hy IJ Inch (U. B. S.l, 8 (or oxyarotj-lBne weldlnKOUtnt, S lor vise to drop aide. Bolts, 1 by 2li Inch (U.S.8,), 2 tor drill pres B^dtllhyaitachfr, Bolta, I by 21 inch (U.S. B.). 3 tor vise tn be Bolts,IbJ-2ilnph, S.A.E.-Utoraubsills , Nuts, i inch (U.8.S.),*(or lathe rtieostae Num. A-lni^ (U. S. a.), 2 for swltiiiboBrd stiff- Nuts, j-inch(U.S.S.), UlorUtheframo, (lor iienrh finder to bench top, 4 Jtir generatlnE Nuts, iinch (U.a.S.l. StOroxFBcetylcne wcM- tnrniitni.s rnf viopto drop Side, 4 Jot pipe vise drtUpresa rapport. .1.4 ftjr drill press to frame. >jau Lu bench cabinet. .-!jlch,CBStle,R.A.I Washns. 1 by tV by A tap , . . v.. — I. —j.j... ._ i,~.i. top, 3 for EoncraltnB to bend) Inchcn.a tot sulMlUs . .^. bench gritider U Washers, l-ineh, commercial, 4 tor pipe vise bench top. Wa3hwa,^llby H by I lnch,commerfiBl, 3 hlmaril st W(^W!,"ioi¥. i-in rating unit. :h grinder tn brach ,db,Googlc erpworg am. Where carfled. Bod; BtCactuncnts for the actUler; repair truck— CoutlDued. Washers, loot, i-Lneh.s toroiyaeBtylane weld- ing outfit, 3 (or vise to drop side, 4 for pipe vise to bench top, 4 for dilll press support. WSEbers, loci, JJnch, 4 for drill press to Fraine, 3 for rise to bench cabinet. Load carried hy tbe artllleif repair truek. Ammeter, No. 1002EvBready,0-35BmpererangB. Attachment, milling and gear cutting, each, 1 bar, oTethangiop, with tallpaitf^ 1 column, vertical side 1 damn, bar support.... 1 head, dividing. I support, overhaiifSng bar Apparatus, oxyacetylcme wddlng and cutting Each mnslating of— I case, welding tool, each containing II broaches, speclai 1 burner, Bnnson, acetylene 3 p^gles, pair. .'. 1 hose, standard, black, 2S (eet 1 hose, standard, red. 23 feet 1 lighter, spark e liters, renewal spark 1 regulator, acetylHie, Xo. 3 gages, 30 to WOpoirnds. 1 reenlator, oxygen, No. 3 .gages, 400 to 3,000 pounds 10 tips, cutting, Nos. 1, 2,3, 4, S (2 each) 10 tips, welding, Nos. B, f S, B, 10 (2 each) . . 5 tips, welding, speclai, Nos. 0, 1, 2, 3, 1 (lor light gage metaU 1 torch, nitUng, No, 3000, 2-hose 1 loreb.weldlng, No. 140, standard 1 torifh, decarboDiilng 1 wrench, r^!ulalor 2 wrenches, tdch 1 wheel, torch Elude Case, welding su[>ply 1 tlujt," Marvel,' "in can, pound 1 Sua, "Peerless Aluminum," In can, poond 2 gloves, canvas, pair 1 powder, cast-iron sealing, in can, pound.. . 9 rods, "Atlas," cast4ron wekUng, Hnch, pounds. 4i rod£, " Alias," cast-Iron welding, A-lnch, pounds. 2i rods, aliUQimim, welding, Hnch, pounds i-ineli, poim^. S^rods, "Marvel," welding, bronze and brass, 1-inch, pounds. lit rods, nickel steel, A-inch, pounds 1 rod, vana^um steel, i mch, pound at rods, wrought iron and steel, A-iucb, pounds. 6i rods, wrought iron and steel, 1-liKh, H rods, wroi^ht iron and steel, l-lnch, Batches, tungsten, Kveready, No, 793 ,db,Googlc Whffecarrlsd. _ Load carried by tlic artillery repair tnulc— ConUnued. Blade:, hackun, UHnch, 21 teetb, AtUiu Saw niBds, Wksaw, 10-inch, 14 t«eUi. Atkins Co., No. 320. Block, drill, with dnmps, aet Book, ''Atneriran Uacoinlsts' llsQd"..- i Book, "Audel's Automobile (jiiestions and I Aosworalor Operators and Bepalrmen." I Book,"Auloaiabile Repairing Made Easy "....I Fiinnel'.nilerinE'.^o.aVsiiVfCT.'"-"-----"-'^ BUies, lur No, J filtering (unnel Bull;, fiaanlight, maids, 2.7 volt.... I Bulbs, carbon, iH candlepower, 90 wHtt, no tDlts. Buabines, eipanslun, lor taper mandrels, ^inch to I)-ln<'h,advaiirin):by^iteenths,iiinwidai CalipaiK, lock-joint transler, otilside, lO^nch Calipers, look.jnlnc transfer. Inside, 10-lnoh r^libcis, hi-nnaphrDdilo, 6-inch, firm Joint with TBlipers, sprmp, fr-inch outside CBlipers, -yrina, 3-inch outside Calipers, aprinc, 3-Inch inside Calippii. 3-lnPh, pocket slide rule, English Calipers, micromeler, Inside, set (containing 10 rod.'! and one J-mchg^e in leather case). Calipers, mlcnnncter, oulalde, set (graduated i;iOUO o[ an inch, meludiiie one Hnch, one 2'iiuib and one3-incli micrometer ssltb ratcbet stop, one t-lnch, one 2-lDch test gage and two adjoatable wrenches, in leather case) Calipers, micrometer, metric, o to T5 nun., set.. . Chisel, cold, &4nch, t-lnch octagon steel Chisel, cold, A-inch, l-inch octagon oleel Chisel, cold, 5-.inch,Hnchoct^on steel ..... Chisel, raid, flinch, {-inch octagiBi stad Chuck, comblnaticm, screw (wared, J-jaw, rated Chuck, drill. No. 0, capacity to )-lneh with No. 2 Horse taper shank. Clamps, "C"(VulOBn)2i inch nam|)5,"C" (Vulcan) 11 inch. aamps,"C" (Vulcan) fll inch Clamps, tool makers, 11 inch Clamps, tool makers, Si Inch CUppers, bolt, 18 Inches long, A:inch capacity. . Compouiid, valve grinding ''Duplex" in 7- Copper, soldering, 1 pound, pointed pattern with handle. Cornier, soldering, It pounds, pointed patlem Compressor, air, witti I) hotse power motor, complete. Coid, eitoision. complete Countershik, 82', round shank, l-lncti diameter.! Count«r^nk,K', square shank, i-mchdiamelflr, ' No. 5 "Little Giant." Countersink, 90° angle, shank i-ittch diameter, I body 1-lnch diameter, 2^ Inchaa lone. ' Cover, canvas, lot " American Machinist's Handbook.'' Cover, canvas , ior " Audel's AulomoWIe Guide " . 1 Cover, canvas, for "Automobile Repairing Made Easy. ' Cutter, side milUug 1-lnch Cutter, side milling A-inch Cuttw, aide milling fmch I sdbvGoogIc •a." Load amttA bj the atUUrar npali track— Coutiiraad. Cattei, sid« milline ,^-Iiicb Cutter, side milllnEi-lnoh Cutter, mlUiDg, IS'BDgle 1 by 2] b7 1 b; glnclies, right hand. Cutter, mllUng, 45° angle i by 21 by I Inches, left hand. Cutter, miLllng, convex, carbon steel i-lnch Cutter, milling, convBi , carbon steel J-lnch Cutter, milling, convex, carbon steel J-inch Cuttor, milling, conTOT, carbon stselj-lnch Cutter, milling, double angle 80°, 1 by 2i Incbes Cutter, metalslitting, A by 2i by { inches Cutter, metalslillng, aV M by I ioehea Cutter, meUIslItting,^ by Ji by I Inches Cutter, raetalsUtting, A by 2l by 1 Inchea Cutter,metalslittlng, ftby ^by llncbes Cuttera, threading taol, single point (to cut U, S. standard thread, Nos. 6, T, S, 9, 10, 11, 12 13, M, IS, IS, IB, 20, and fit Armstrong toot bolder No. 60). Cutter,circularglas3.3 to 32inches, with gradu- ated barandlockinE device. Dividers, spring, «-ihih Dividers, spring, 3-inch ,'. Drills, taper shank, J by I| incbes (sices sdvane- ii^ by sixty-lourins, i to 1 inch, advancing by sixteenths irom 1^ laches to I) inches, Inclu- sive, standard Uorse taper). Cutter, metal slitting, i by 2$ by { inches Drilt, drill. No. 2 Morse taper Drills, straight shank, carbon stael 11 sites, t o( each, A to it inch, advancing by sixty-fourths. 7 sUes, 3 of each, A to j inch, advancing by sixty-fourths. 8 sites, 2 of each, H to ^ inch, advondug by sixty-fourths. Drills and countersinks, Jrli'ch diameter drill, a inch diameter of body, siie No. 22. 1 and countersink, f, and i inch diameter drill, 0.302 diameter of body, siie No. 26. Drill, portable, electric, type EK with llO-voll, direct current, motor complete. Die stock. A, 8, M. E. standard, set, (this to in- clude 13 sites of taps, dies, and collets. Koch set ol taps to include taper, plug and bottom, all in hardwood case, sIms: No. 0-80, No. 1-72, No. 2-«4, No. 3-S6, No. 4-4S, No. 5-44, No. 6-40, No, 7-36, No, 8-30, No. 9-32, No. II>JO, No, 12-28, No. 14-24). Drills, hand and breast, No. ^ B, with chock capacity to ft inch. Dressers, emery wheel, | by 10 Inches, " Dlamo- Dogs, lathe clamp, 11-inch capacity Dogs,lathe clamp, 2f-inoh capacity.- ------..-., Files, flat, bastard, doublecut, 10-lnch, " Nichol- Files, Hat, bastard, double cut, 12-ineh,"Nichol- Flles,'flat, bastard, double cut, 14'iiich " Nichot- Flles, flat, double cut, second cnt, 10-lncb, "Nicbolson." Files, flat, double cut, second cut, 12-iDch, "NlchoLBon." nies half round, double cut, bastard, tO-lnch, "Nicholson." Flies, half round, doublecut, bastard, i;Mnch, ."Nicholson." Files, halfround , double cnt.secoDdcut, 0-lncb , " Nicholson." ,db,Googlc '*^.'* B, H.C. 8.C. R. WiMrt CWTfel. , •a hj ttkt utaMrrrapaIr truck— CoDtlnucd. FIlM, hiltraunil . doubia nil , wcoBd cat, S-tacb , Klcbolsoo.' Fl les . ha] rround , doabla ni " Nicholson," , hall twind, double cut, samnd oul, 1 J-lnch, Fllu, round, double cut, second cut, i-i *' Nicholson/' lie*, round, double cut, second cut, S- "Nicholson," Files, round, double cut, second cut, lO-l ■■Nicholson," lies, round, double cut, second cul, l^lnch, round, bastard, double cut, 13-Inch, "NIcholso Files, I il,sln((lec 1, smooth. A-lnch.^' Nlchol- ^ smooth, S-im^h, "Nichol- Files, mill, single Files,' mill, single cut, smooth, 10-inch, ■■ Nlchol- Files.' mill, single cut, smooth, lWnch,"Nlchol- Files, mill, bastard, single cut. S-inch, "Nlchol' Files, mill, bastBrd, single cut, 10-lnch, "Nlebol- Fiies.mlll, bMiard, single cut, l»-lnchf"Nlchol- Files, square, double cut, second cut, 6-inch, "Nicholpon." lies, square, double cut, second cnt. Mneh. "Nicholson." Flies, square, double cut, second cut, 10-inch, t. H.T... I. R.T... Files, Mfhi Ard, double c __, saw, single cn(, 4-inch les, taper saw, single cut, 9-lnch les, taper handsaw, single cut, second ct Fl'les, S-squ«re, slim,' double cut, second ci a-shlighM, Ametiran Eveready, No. without rubber hood. . lues, S-ampere. union, 250-valt, No. 6171 . Fuses, 10-ampere, N. E. C. union, ZSO-volt, Fuios, ao-ampere, N. E. C, union, 250-voll, SO-arapere, N. ¥.. C. union, 2S0-volt, No. a, hacksaw, adjustable Gages, center Osges, micrometer, depth, with 2 extra rm Gages, screw-threading tool, J9* Gages, worm-thread Gages, screw-pllch, V-thread .'. . . Gages, Jobber's drill, ft to J Inch Gages, thickness, » blades . j Gages, universal surlace, with O-lnch Bidndle, . lose not hardened. I Grinders, automobile valve cc-nod=,CoOglc k, Ihr IbT^linrhrr I worrl. Nwton alundum. 1) 1>v | inrlii'<, grain 3,Wii, pwl* N. I whirl, Norton iluncluni. tl bv j inrlH'H. itnin j.Mfl. (rwti N. HammCT. cliw. bell fan. *iH> No. II. 1 pouml IlamnH . HoldCT. c I by ill HolclfT, c I by 1 1 Holdrt, - -A.t-A. I. i>.l Jti«,l."ACTil.p!l,-S'l.. -ii 11 IU.JL, No. am ■Ajfrippa. ft tool. No. MH ■■.ip-TPa." fl lool. No. .WL ■■.Mrrliipu." aoiii«,turnlngloal."Agrliiira"0-R. Iby !t)y U loeliH. r&bcJiand, oRwl ihank, wilb S hi^-flpead l-inch cQllera. HMa, tomitiE lool, "Ajrtppa" O-L. I hv 1 hy Si lD(ib«>. kruun[],onKle, with portable ttuiit. IjpBnilsplml, No. I Morso taper, tirtl lit ■ft. I, A Inch; lert hanJ, 1. A. (, A incli li,eiidBplral,No."" 1---. — ibioh: lett-1 by I by 8 Indwj. . . ), A. I, l&di: icft-band, 1, A. !■ I la<^- ParaUala,|by|by8|--'-- Parallels,lbylby«l I, stock » iDdiea lone, pliig Uja, die lee, from j to 1 Indi. advancing b ,db,Googlc EquiprntiU for unite ecmponng a re^ment of 155-mm. howitier motiriel, model of 191t {BAnader) motomtd, on war footing — Continued. Where canted. . Load eorrlad by the ■rUUerl' rcpali truek- ContiDued. Reamer, taper pin, "Alvord,"0to6, set Rule, 3-ineti. i;raduBllon No. 7 Rule, 6-ino(i,gradUBllonNo. 7 Rule, G.|iich, fleilble.EraduBtloiiNo. 10 Rule, metric, tolillng, No. 11T3M ' Rule, 3e-lnch, English, Kraduatlon Bcrewdriver, 1-inch, Smith's Periecl Handle, I No.«09. Screw driver, O-lnch, Smith's Porfeot Handle, No. 609. Screw driver, S-inch, Smith's Perfect Handle, No. 608, Scale, flexible, 300 mm. No. nOOH Scale, semifleilble, 150 mm. No. SMOU Boribers, improved, adhistable sleeve Sleeves, collet, No. 1 Morse taper, inside. No, 2 Horse taper, outside. Snips, tlimer, lO-lnoh, lorced steel Squue, 3-lndi try, solid steel Square, B-inch try, solid steel Square, 4-lDch, patent double (2 blades and Square, 12-inch combination, set Tank, compressed air, complete: J clamp, hoae, sdJustabJe --.--------- 1 coci, drain, l-iDch brass 1 coupling, ''Bowes," i-lnch hose, male hall. 1 coupling, "Bowes," l-lndi hose, (emale half 2 coupling, "Bowes," t-lneh hose, [emale end, outside I-!nch thread. 1 gage, pressure, brass cast, with screwed- on ring dial, 2Dl>pound capacity. 2 hose, pneumatic, J-lnch, 5-pI y, 25 reet long , armored, "Quarry," "Bowes," coupling 1 hose, pneumatlo, J-loch, B teet long, Goodrlfii 3 braid "Mainstay," "Bowes?' i-inch couplicg on one end. 1 bose.pneumalle, Hnch, "Penfloi" bronie, No. 3 toetal, lOfeet long, with I-inch union pipe coupUiig at each and. t nipples, f-lndl I. P, by 2 Inches 2nlpples,WiMiiI. P.by4hiehe8 Ilee,t-hichl. P. malleable Iron 2 valves, 1-lnch globe, brass body with loft disk lor ItK^pound pressure. 1 valve. Hnohoonsolulated, safety pop with soft disk to blow off at ISO-pound pressure. 1 valve, l-inah, dieck.horlioDtal brass body, s<^ disk, Ifid-pouud pressure. Tap and die, metric, set (stockslies No. 8, No. 7, No. 10; top wrenches No. I. No. 2, No. 3; dies adlustablerouitd spUt, siies 2, 3, 4, b, S, 7, S, tO, 12, 14, le, 18, 30, 22, 21, and 26 mm., taper, plug and bottom ta^>- Taps, hand, U. 3. toper, plug and bottom set |Bliefll,^^|,A,i,i,)l™«. , , , . , Tros, pipe, Briggs standard, sot (slies i, J, 1, i. Tools, pipe, set, } to 1 inch (stock and dies cat- tliiE i to 1 indiT 14-inGh pipe wrench, 1 to 1} ln£es; roller pipe cutter, f to 1} inches; hinge vise, i to 2i Inches; oil can and can cement). Torch, gasoline. Turner No, 92 double Jet, 1 quart Trammel, beam caliper, 14 inches Voltmeter, 10. volt range Wrench, monkey, lO-lnch, "Trimo," 1913 pat- Wrench, monkey, 12-inc!i, "Trlmo," 1912 pat- sdbvGoogtc Eqaipmimt for wiiu eompoiing a naiment of lS5-mm. komtxer matlriel, model of 1918 [Schnader) motomed, on wor/witt?;^— Continued, NnmbvM'crEaiiiu- Artlde. lion. B. H.a 8. a »• Class. K- 3 3 S 1 ' Load curled b; the aHlllerr repair truclc- CoDtluued. Wrench, pipe, It-tach, "Trlmo," metal handle, capacity i to 1} Inches. IV X IV A R R T ? ^art jftug wrench, universal Joint and scraw- A.B.T g . 3 ; Wrenchi adjustable tap, length 11 Inches for A to i Inch. R B B H T T T T J Wrenc*', adjustable tap, length 20 Inches lor i to Wbee], Norton alundum, Ij by } Inches, grain w^l,^™alundum, li by | inches, grain Whee^. Norton alundum, 10 by 1 Inch, grain 4B, grade O. truck. Batteries; extra for flashlight tnngaten, Ameri- can Eveready No. 793. ^ L.K.T Lis L.R L. B t:| L.R L.R L. H L. E L. K L.R L.R L.R L.I T |::::;: T ?::::::: T T T T T T T |;;;::; t"::::: raiTlCT, tire, 34 by 4 iniies, W. W. Sij'iid. 13 . . Chains, antiskid, set, 33 by 4 inches, Weed.... 6 1 Tores, valve plnnger, complete lor Schrader t Extinguisher, fire, complete with hraclcet,"Fyr- Fyter,""l>yr6ne,"OTequal. ' ' rlashlight, American Eveready No. IBBl, with- out rubber hood. Gun, grease Gage.^lre pressure, "Schrader" iTOTs, tte. Canton No. IJ, W. Bingham Co.. Lamps, side, oil, Adlake type No. 4181 Lam6, tail, oil, Adlako type No. 4482 ,db,Googlc »""-£,-»""- Artlde. Ssss. B. H.C. 8.C. ! R. 0^ Divi L. R. T 1 1: ?::::::: L.R.T t;g;?::::::: fcH.::::: fcll;::;;:; „ ,1 , inick-CoDHnned. ratchps, hlowout, lor 34 (jy < Lnoh tlra, Good- 1 Hlfinal.liiuid. wamJoE. " Kloion." K-3, " Blew- TSta""-.'":".'-.™""'::"-'-":"-"^ Tire, spare. 3S by 4 inches, Goodyegr, or enual.. Tubea, innPT. 33 by 4 Inohea (1 on spare vWl; i 1 ^ ! SL-ASi-tt.SSiS'r::;:::::::: L.R,T L.R,T L.R.T L. K. T L.R.T L. R. T L.R.T IIIe;; IV ; I Strap!, 12 inohiH limg, s^'le AV, 7 hijes, 1 tor Bx tmndle, 1 fot b^M handle! Suap, ffljfl inches long, stylo AV, 7 holea, 1 for Strapj U inoheii looR. style ATK, 8 holes, 2 tor Strap, M inches long, style AV, 10 holes. 1 (or Top oV-er drlvir's s*Bt, wilh Morm curlains Load carried by the lisbt repair truck. Bolts, stove, with QuB, roond-head, i by 1 inch, BDlt-i, stoce. with nuls, round-head, ^ by 11 inches, pound. - '^ ' ' Bo^ swve^with nuts, round-head, A by I Inclica, pound. Cheat, carpenter's, with conteoti llslod under load " A "^^ ol the arlillery supply Dusk. Ijiock, duplex chain Y. AT., 2- ton Chest, llEbt auto lubricant ,db,Googlc Number per organiu- Load canled b; the llglit repalt track— Calipers, tnside, spiin)!, e^nch CaUpen, outside, 9prinit,&'u«, rui0ns Ilneh, poundi, te, screw, taps and dies, U. 3. gtuidard, with tap wrench, inoliidlnB chest (drawing 76-7-7T). Pllera, chBln oose, tile luv.. >, nie luv ne, slncJ colter pin, J by hi ino revoUine, lor [eatbBr . Ropo, wire, hemp ooro, i-l Sandpaper, No. 00, quire ^^andpaper. No. ^, qulro- Salt, sotderlni!, pound ^eaJe, steel, lltincb. giadustad Screw driver, s-lnchblada (Hooh taper In 12 Inches) I led sites, copper, poi ' ooro , i-lnch, leet Snspcr. beariiiE, 3 Shears, ^inch naai r,3Jby ] inchhtodo... E. standuil, ) to 1 I double ■]«',' r,t-lncJiO. D.,tMl... blned, fl by I by 1 Inch. I Tape, friction, f Inch, hpound roll. Tape, rubber, Wnoh, J-po«nd roll. , Tape,slee],60Ieet... . Taps and dies, 8. A, with stock and tap , Tools, pipe throaiilnE, sot Tools, tire valve Torch, Bisolina, Turner -No. 1 quart. I Tubing, oopi ( Twine, homj Vise,' hand '."""[]""'i[\\]"\]"'.l\]'. ^ Visa, mDchinlst's, swivel Jaw and swivel hase, iii.,t — i__.. a \. F.., heavy, t-lnoh i. E., heavy, A-lnch 1. E., heavy, Hnoh Washers, look, S. A. E., heavy, A-lnoh — ■ s,locli, a. A. K, heavy, Uneh - '— "- S. A. E., heavy, *-lnoh Washers, look, S I Washers. , . I Washers, look, S Washers, look, S. „., . Wire, oopper, No. 20 B. & S.. _,___ _ Wire, copper, No. 14 B. iJt S., spools Wire, soft steel, No. MB. & 8., spools ^ ,'" adjustable^ Wesoott pattern lenuu.-n,' uujuswuiB, "BSD 'renoh. piiie, Moth, "Trimo" L. R. T L. H. T L. B. T L. R. T sdbvGoogIc Number per organlia- Load carried hy the llEht repair truck— 'rench, pfpe, lO-lni!h,"Trimo" _ . 'rendi,plpe, H-liich."Trtmo" rnmoh, monkev, IS-inch, "Trimo" .'rench, screw, I2^inch, Bate numtey'. Wrancli, patent ratdwt, with socket Wrench, ''8,"ad]aatablo,Wes(!OtfaNo.T8 Wranoh, "S,"ad]uslab!e, WBBcott'sNo. So. .. Wrendi, "g,"ahlif!hl. American Evcready, No. 1991, (laAet, carburelornoitle plug " ';ct, car boretor Intake pipe, upper ^ct, carbure lor Intake plpeloww (lastets, englnB cylinder and valve plug Glands, oil line compreasion union. o^iST^.v. ■.".;!";;: ::"::::;::" Hammer .,,. Handle, wrenoh, carburetor socket Handle, yelve plug socket wrench Jack and handle Keys, cnglue valve mrlne I.araps, head. Hall No. 479 or«quttl Lamps, aide, .IdlBke No. 4498 lamp, tall, Adlake No. *49T Lamp, dash, Vesta No. 7U or equal ' imp. eslenalon, with cord lule, carburetor, low speed .' wila, carburetor, highspoad _.jiile, carburetor, starting...... Nuts, oil Uae tvinproBslDn. union gland Outnt, lire repair, yaulln, 12 by la reel _ ^ J; c n [. n c ,db,Googlc Numb«r Mr or|»iili>- SoD. it tor tlia ataf olMona- tlon ear-OoDtlnued. piSfer! . Hprings, ■■ng' !. FTresUine-Kraley, 38 by 8 "Long Uom," model J A or equal.. .0 I Syringe, tMllPryhydi I Tire. 36 by 6 Inctaca, » TiiSos, lYBpOiTpiuDp, check, compl^.„ No. la, IB-loot spool... n \ WrPniA. auto, B-incli . .0 ' WTMich. bicycle .0 Wrench, mafneto .0 Wrench, M. hub Wrench, open end. No. 25. . . .0 I Wrench, opsnenij, No. 31... Wrench, open end. No. 27. . , ,0 Wrench, open end, No. 2B. . . " '"■ •■"' ™lve adjusting. . Wrench, carburetor socket. ' Wrench, demountable rim I Wrencb, "volve plug sextet.... ! Bodr equipment for the staff obMrvatton Wberecanifld. . pneumatic, Goodyear or | list's. M ■* S'SSiff"" Straps, 1 lODB-hB s lone, BtyieAV, 7 holes. 1 for handfe ahorel. I for hatdiet. 9 long, style AV, 7 hole,*. 1 for ovel, 1 for short-handle shovel. extra lor flash light, tungsten T'° "> ^■"■'8-2 re,M "^ia sarvict flaah'llKhls, Mazda or.. pounds.. riSiS^w spuciul or (furnished when r<^ulredror ,db,Googlc Number per vgrntaa- Artkle. ™ SSI tloo. B. H.C. B.C. R. Clus. Dlrt- BIOO. « i e 6 1 34 e IS e la 8 ■^■"•"""'...-fflav -" IV X X 1 1 1 S \ 1 j 1 B 8 c c c g c (r», M by 6 Inehea, pneumatip. Goodyear w 1 I i RSiSJSSS::^:;::;;::::;::::;:::::: ^::::;::::: e B R R ^ c ,db,Googlc Niunbgt pec cusanlu- B. H.C.;3.C.|e. 8 li 20 10 10 i 30 10 10 60 6 ao 120 J 2 1 '! in "ft Bodr Miulpmcnt for tbi reconnatosante ear— Continued. Oil, medium, easollne engluc, j!Bllon Pads, lantern bracSet, complete Shovel, long-handle Shovel, short-handle Slrapa, lantern Straps, t2incheslonj(,a(yleAV,TholeB <1 for Bi, HDrloniE-bBDdle shovel, 1 for hatchet). Straps 15 inches lontr,styleAV, 7 holes (I tor lotig-nandlc shovel). Bqalpmebt toi tbc Si-ton 01111107 tnetw. Armor, Ineloslng engine, ladlatoi, and [neltank, complete, set. Bdtiian".;: ::::":: ::::;::; ";:"!::"; Box, motor vehicle tool, model 1013, containing tools and acoessorles as hereinaflerlljted. Can, safe'ly.l.sailon... !!'!!!!!!!!!"!! !!!!!! Cover, [or radiator (fumlshed when required by Drill steel, 8 Inches long, tapering from J to Extinguisher, Are, complete with bracket, " FjT-Fyter, " " FjTene,^' or equal. Hatchets Lamp, side, right ijimp\tai]i . . . \\'.v^'^'^'^'^v^"^v^',','."'.'. Lantern, complete Mattock, pick Oil, medium, Euollne engine, gaUm Pads, lantern bracket, complete Paulln, 12 by 12 Inches Straps, 121ne]ieslong,style AV, 7 holes (t lor : ax handle, 2 (or hatchet handle). Straps, lantern Strap, 22.7S Inches long, style AV, 7 holes, 1 Strap, 19 Inches lonE, style AV, 7 holes, 1 short-handle shovel. Strap, 15 inches long, style AV8, 7 holes, 1 ■Vftenches, magneto Wrench! speclaiset-acrew Wrench, socket, special lor gear and aile shaft Wrench, brace, for assembling grousers, armor-front plate. Bqnlpiueiit tat tbe 5-tan oitUlciy ttw Armor, Inclosing engh:ie, radiator and lucl ( Inel tank, complete set. Bf\tliaa\'ly//^\v^v"^y/^y^'.'.'.'.'.'.'.'". Bucket, canvas, water Bracket lot steering clutch spring tool Box, motor vehicle tool, model lOlS oontal tools and aooessorleshereinattcrllsted. Can, safety, 1 gallon Coverfor radiator (furnished when required lor . special service). Estlngulsher, fire, Pjrene, quart slie, filled, complete, including bracket. "HandlwofeoftheS-tonArtillery Tractor, Mod- el 1917, No. 1993." Hatchets Handle, ratchet socket wrench, "Moasbe^". . Handle, ofbet socket wrench, ''Mossbcrg".... ,db,Googlc Number per orgsnlEti- C. 8. C. B. t4w— CoDtinued. Joint, nniTOrssl, " Moasberg" Lacing; fan belt, lan-bide, A br 42 inobei. . . e, r&bt.!! e.ltk Maltock, pick, Oil, medium, gasoline engine, gallon.. Pin for socket wrench..... --,.-. Pads, lantern inacket, complete Psulln, 12 bf 12 feet . . 83 long, style AV, 7 bD !, Ifoi ; Strap, IS inches long, style AV, 7 holes, short ' handled shovel. 10 Stiml*inoheslong,styloAV8,7holes,forplcli 10 Straps, cusbJon, S2 Inches long, style DV, 10 M) i Shovol.ahortliandled. 6 Scrowlorsteerlngoiut' B ! Socket lorateerlQgelul iO : Socket, siiuare, "Uossbetg io I Socket,bexaBODal,"Uoss1 ;h sptliig tool . . Wreocb tor oyllnder base stud ni Adjusting wrench. Chain repair block Lock washer holder Tooi wrapper, oontalning — wrench, 1 wrench, 0.6 and 0.87*, 0.75 and 0.825. Lantern Lantern bracket pad. driver, 1 socket driver! 10-Inch blade . . blade.. [«»], iiri^ui blade, lor SO-lnch wheel... Lock washer, U.5 inch« Inches loog, 5 boles... Space put» for M AdJu5tlng-rlQ«lock. Adjusting-ring lock Crown nut, 0.37>tn< sdbvGoogIc >er Mf ocfuilia- B.C. S.C. R. Spwa patu lor Han^ oiler, O.S7MiKti Oiler spring Pintle latcE spriiu Koller chain B7.5 lane, with cat(«r-plo Ikm link. Roller Cham W.TS Roller chain parts: Connectiiig link Cott«r-pJn connectlnK link OBsBt oonneetlng link '".W'.WWW'. Outsiae link, common Spill pins: 0.093 (A) by 1 Inch oiisecLbyisiSrfira;:;:::;;:::::::;;::::: 0.3S br 1.26 Inches Wheel. Se-lnch, oompleta Wheel Iaat«illlie Driving rliw with pina Carriage bolt with nut Pintle -(oot,foidiiig Plumbline SoalBa,plotting, 1/30.000 and millimeters Steel, arrow (tally pins, la In set) Glass, mapiirying, pocket Cheats tor lopogiBphlceaulpment Protractor, xylonite, rootangular Compass, marching. .\l.." ..".'[[...[... W.W. Boards, skBtchlng, wlUi Bitenalon tripod KulBr, boxwood, (jlBngular,8-inch Tally machine.. Celluloid sheets '.".!! i;!!!!!!^!!!!!!!! Eraser, panoil,«rl gum Eraser, drawing, rubber Holders for llndng pads Thumb taoks, box Pencils, drawing Pads, akfltcbing Pads, timing , Pencils, coloTBd , sjaorted Prolractora, pencil point Knife, steel eraser Pocket for penoili Tape, adhesive, roUs Sandpaper, padi R. C. and reel. Seelaodcait! Beelandcarl. BeeJandcart. Reelandcart, Beelaodcart. Reelandcut. sdbvGoogIc Number pec ngnniu- Hn-conttDl eqnlpment-Cfaitiiiued. (EngSneer Corps matsrlBl)— Continued. Paper, dniwijig, single, 24 inches by S jsrda, roll, in japanned tube, CJiest tor sketching equipment.... ,.„,......,.. Alidade, boiwood, open sight Plane table, 24 by 31 mches, tripod attachment, fiber esse, waWrppoof cover. HDKeilaneous equipment M be used tn eme^enelea lor convcrtbig ralaeons and canUn Itanbcn Inta lMwi»-4li«nn m- hlelea. Bolts with crown nuts and spill pins (carriage Chains, doubletree wltb open links (carriage llmbef). DoubletTBM (cfUssoQ) Doubletrees (carriage limbers) Doubletree adapters (caisson) Keys (carriage hmiiers) Pin, doubletree with crown nuts and split pins (oarriage limber). Pins, doubletree wltb crown nuts and spht pins (caisson). Pins, pole with ipllt pins (caisaon or carriage Poles, horse (caisaon or carriage limber) "lie sockets (calssor ' Straps, doubletree (carriage Umber) Neck yokes (caisson or oairlage limner) . if motor veblcle tool boi t I Nash truck chssali, S)-ton liactara, and 9>Mn araUnr Assembly, breaker, magneto (furnished by vehicle maker, to suit magneto used thereon). nnnV. " Aiirtel's Anlomobile Guide" lor Bashlli^t, tungsten, Ameri- _^ Co., No. 79J. for flashlight, maida, American Eveready Co., No. 1197. Chain, towing, IS feet long Chisel, cold, I by B Inches CUsel, oold, J by S Inches Chisel, cold, I t^elndias Chisel, cold, 1 1^ S inohes, ■«""'""'< point Cover, oanns, tor Ordnance handbooks Caver,canvaaIor"AndersAutom(Alleanlde" . Caldum carbide. 2-Ib. can Drill, copper, I dt 1 inches Drift, coppar, 1 by S Inches Drilt, soM, A^ndi pcdnt, S.e hiches File, flat bai&d, double out, lIHnoh File,lialt4Vund bastard, 10-lnI motor vehicle tool ben eanled 1 Nasb truck ctuwsto, SMon tracton, and IMtm aMlltcr)' In, drop-forged stMl, i idplrpdrop-f Inch, H. Cbi t, e luchsa, atr^ght handle, ' Mpc SltiJKK. model 1907'. Wrenchea, monkoy. 6 Inches lone, steel handle, "Trimo," Wrenches, monk»yi 15-inch, steel handle, Wrenobes,plp9,8-lncli,i[eelhandle, "Trimo" ,. WfeD