f uc-nrlf handbook of the...guncaisson,modelof1902,inhandbook1659beingused. the followingparagraphs...

U FUC-NRLF

GIFT OF

No. 1773

HANDBOOK OF THE

8-INCH GUN MATERIEL

(ELEVEN PLATES)

JANUARY 19, 1917

WASHINGTONGOVERNMENT PRINTING OFFICE

1917

No. 1773

HANDBOOK OF THEi

3.8-INCH GUN MATERIEL

(ELEVEN PLATES)

JANUARY 19, 1917

WASHINGTONGOVERNMENT PRINTING OFFICE

1917

WAR DEPARTMENT,OFFICE OF THE CHIEF OF ORDNANCE.

Washington, January 19, 1917.

This manual is published for the information and government of the Regular

Army and National Guard of the United States.

By order of the Secretary of War:WILLIAM CROZIER,

Brigadier General, Chief of Ordnance.

(3)

362104

CONTENTS.

Page.

List of plates. ,6

List of equipment 7

Gun . description 9

Gun, weights, dimensions, etc 9

Range table, service table for shell and shrapnel 10

Ammunition 12

( 'art ridge case 12

Propelling charge 12

Projectiles 12

( Common steel shell 12

( 'ommon shrapnel 13

Fuxes 13

F. A. combination 13

A llowance of ammunition .". 13

Blank ammunition 14

The charge 14

Preparation of blank metallic ammunition 14

Flash targets 14

Drill cartridge 14

Fuze setter, hand, model of 1913 14

Operation 15

Fuze setter, hand,old model 15

Adjustment 16

Adaptability to other guns"

16

Carriage 17

Weights, dimensions, etc 17

Nomenclature of parts 17

Description 23

Adjustment of sights 26

Verification of parallelism of lines of sight and axis of bore 26

Limber. . . . .- 26



Description 29

Caisson 30



Description 33

Forge limber 33

Battery wagon 33

Store limber 33

Store wagon 33

Repairs for Field Artillery materiel issued to the United States Army and the

National Guard 34

Method of loading one 3.8-inch gun battery for transportation by rail 34

Total equipment of a field battery, together with expendable supplies 36

Index 51

(5)

LIST OF PLATES.

Plate. Faces page.

I. 3.8-inch gun, model of 1907, breech mechanism 9

II. Shell, shrapnel, and cartridge case 12

III. 31-second combination fuze 13

IV. Hand fuze setters 15

V. 3.8-inch gun carriage, model of 1904, left side elevation 17

VI. 3.8-inch gun carriage, model of 1904, plan view 22

VII. 3.8-inch gun carriage, model of 1904, longitudinal section 23

VIII. 3.8-inch gun Umber, model of 1904, front views 29

IX. 3.8-inch gun limber, model of 1904, rear views 30

X. 3.8-inch gun caisson, model of 1904, side view 32

XI. 3.8-inch gun caisson, model of 1904, rear view 33

(6)

LIST OF EQUIPMENT PERTAINING TO ONE 3.8-INCH GUN BATTERY ON WAR FOOTING.

Xo.

HANDBOOK OF THE 3.8-INCH GUN MATERIEL

Tlie 3.8-incli Field Gun, Model of 1907.

This pamphlet, together with O. O. Form No. 1659 (3-inch gun

materiel), will be used for the 3.8-inch field gun, model of 1907.

As the 3.8-inch field gun and its mechanism is practically identical

with the 3-inch field gun, model of 1905, the information givenin that pamphlet is equally applicable to the 3.8-inch gun. The

differences are in the sizes of the pieces, types of extractors, and

methods of firing, which are clearly shown in Plate I of thishandbook*

WEIGHTS, DIMENSIONS, AND GENERAL INFORMATION.

Weight pounds. . 1, 535

Caliber inches. . 3. 8

Total length do 111. 25

Length of bore do 10L

Length of rifled portion of bore do 91. 4'.

Number of grooves 3i

Width of grooves inches. . 0. 2111

Depth of grooves do 0. 03

Width of lands do 0.1',

Twist right hand increasing 1 turn in fifty (50) at origin to 1 turn in twenty-five (25) at 13.47 inches from muzzle, thence uniform to muzzle.

Weight of projectile, filled and fuzed pounds. . 30

Weight of powder charge ounces. . 48

Weight of cartridge case pounds. . 4.7

Capacity of cartridge case cubic inches . . 142. 6

Muzzle velocity feet per second . . 1, 700

Travel of projectile .inches. . 93. 73

Maximum pressure per square inch pounds. . 33, 000

Range at 18 elevation yards. . 8, 000

(9)7781017 2

10

fc S

1-o 8 s. ::(:: : : : :8 :::::::: :3

^ jgso : :oi : : : : : : : : :

o '__

^d '^

a

!- ; *~oiCoi n^zz zzizz

""

J

^-

*21S* o OOOOOOOO-I

-I IN CO * 10 t- 00 05 O rH <N CO -* U5 !0 O t- 00 05 O i-H(N IM fO * 1C O > 0000050.-5 (N IN Ci <N M (N CS (N IN <N<NNCO

OaOOi-nCNCSOCCO^^ lO^CcOt^

rc

,50' ' -^^^<N<N<N COMCorf^^Tf.uj.O^

X 8 o * ' " '

I-H i-5 ^ i-5 *H c4 c^ e<i N co cc ec cc * i ^ * c "5 c i co o ?o t^t-lt^so

|

f|

I^^To000 0000

-J5

|

^.a- R

.OOOOOSOOOOt^dO CO(NOOOCDC<30t^1<'H t>.'*050NOO'*05'*0 "30 "5

'

^__S.o>-*o-05U5-<ooci<N aousNOco^-iosoco c^osooco-^for-iojooo o < eo

<j-H5 rf

fa

o>ocooo^eoeooo> -<tN -H <N o * oo t^ <N oo o so o 10 <N -< CN us o

"a!JH g> o ooooooooo:S

H*

1

i5^ "- "- "-

" v " -fc* * ' ~" ~r *rl * r*r*.-T -.r-.r^.r^-r*x ^r-^r^r^r

11

00 #-< 00 CO CO i-l OS t- O CO i-< O5 t^ CO **< CO CS rt O5 00 t^ CO iO ^ CO Ol rH O O5 O5 OO t^ CO CO O ^ * CO CO C< i-l i-l OO O5

CO O CO * CO O 00 O< 00 r- 00 O 3 W i-l I-H CO CO ^ O r-i ^< ^H O H î 00 TJ< ^< t^ Tt * 00 10 O O5 O I-H CO iO 00 I-H 10 O5 CO 00

oo ooo505050Joaft5Mrw .-H ^cjw o co co co

2J ^J ^12121222^^^22

CO CO CO CO CO CO CO CO CO CO CO CO CO ^ -î ^< * ^ ^ ^ >*

)-! (N CO ^ CO 00 05 O IN CO lOtÔSr^lN^COtÔSO CO CO 05 IN O l> O CO 10 00 CO 00 (N t^ N t~ i-H CO O <

COO5COCOO5CO CO O CO t^ O ^ t^ O *# t^ i-HO 00 C<HO O5 CO CO O * t>. rH iO 00 N CO O CO t^ i-l O O5 CO CO O ^ 00 W t^ i-l

S^rt^^d 222?'^'*^'*"'"'"' cococdt^t^J>o6o6o5C osOQQ.^rH?5?i?9

O5000000000O O5OCOCOO5CMIOOO r-l lO OC

OOOOOOO5O5O5 OOO'-î-Hi-HC^C^C9CO COCoW*^^

OOOOiOiO COO5OOO1OOOOO OOO^COCOOOOîOOO OO>OOOOOOiOCOO

I

^So^SSS^S^g SS^^^gSS^K 88g8$c3S2gk333S$3S8 SSfoSSSSS^ K^Sg^fegSJSg

ooc^coo^r-o^tô cîooOfH^j*tÔ5C^^co osc^-^coooocîotô *coioi>-oc^ coô t^- oC^ C^ 25 OJ j C C C? C CO* ?3 ?3 ?3 CO* C^ CO C>? C? S? C? C? cS cS C^ c5S C? C {4 C C? C? c4 C C? CO 0^ CO CO

^

00500t>-COiO * CO <N ~t O OS 00 t CO CO * CO (N ^H O 05 00 00 t- >. CO * CO IN * O 05 05 00 t> CO CO 10 * CO i-l O00 t-i t^ t>i t^ t^ t*i t>I >i tC t-I co CO CO CO CO CO CO CO CO CO CO >O iO "O O iO O >O >O iO O O O Tj! rf # î TJ( TJ< rjl ^ rjl ^ ^jJ !<

I

o>-*oocr>.05FHCoiNi-H^-*OJcoio>o tôio-*oooOTj(iooo NOOQO^-IOOOOINOSOSCO i< o r- 05 <N o o co f~ e>

cococot^t>t>i>oooooo ooo5O5O5OdoooOi-H 1-^1 ic^c^cscococo^*^ ^loioôcococot^t^-oo

12

AMMUNITION.

[Plate II.]

Fixed ammunition is used in the 3.8-inch gun and is made up of

either common shrapnel or common steel shell. The ammunition as

made up varies slightly in length with the type of projectile used.

The ammunition chests of the battery are of sufficient size to take

either kind of ammunition furnished, so that the quantity of each

class of ammunition to be carried is a matter to be regulated byproper authority. All fixed ammunition for the 3.8-inch gun is

issued filled and fuzed. The weight of the projectile is 30 poundsand the total weight of the fixed ammunition, either shrapnel or

shell, is 37.78 pounds.A cast-iron shell has been designed having the same center of

gravity and exterior dimensions as the common steel shell. This is

used for proof and range firing only;

THE CARTRIDGE CASE.

[Plate II.]

The cartridge case is a solid drawn case of cartridge brass havinga capacity of approximately 142.6 cubic inches. The weight of the

cartridge case with the 110-grain percussion primer is 4.78 pounds.The base of the cartridge case is stamped with the name of the

gun, initials of the place of manufacture, and the year of manufacture.

The ammunition lot number is also stamped on the base of the

cartridge case. A circular groove cut hi the base of the cartridge case

is painted yellow to indicate common shrapnel and black to indicate

common steel shell, i. e., high explosive shell.

THE PROPELLING CHARGE.

The propelling charge is composed of nitrocellulose powder, the

granulation being cylindrical and having seven longitudinal perfora-

tions. The weight of the propelling charge varies slightly for differ-

ent lots of powder and weighs approximately 48 ounces.

Smokeless powder must not be used for blank charges. For this

purpose, the Ordnance Department furnishes a special powder.

PROJECTILES.

COMMON STEEL SHELL.

[Plate II.]

The common steel shell contains a bursting charge of 3.24 poundsof trinitrotoluol. The weight of the shell with the bursting charge,

fuze, and base cover is 30 pounds with a small tolerance either way.

COVER GROOVE & CBUfHfMHKROTATING BAND.

BASEDETONATING FUZE-MEDIUM CALIBER. PLATEH

\-BASE COI/E:R.

COMMON STEEL SHELL MODEL Of I9OS-

STEEL DIAPHRAGM;

L HEAP.

SECOND COMBINATION FUZE.

COVER.

LOOSEBLACK POWDER^ ^ROTATING BAND.

13

COMMON SHRAPNEL.

[Plate II.]

The shrapnel is a base charged common shrapnel fitted with a

31-second combination fuze. The shrapnel filling is composed of

369 balls, each approximately 230 grains in weight. The balls are

approximately 0.54 inch in diameter. The interstices contain a

smoke-producing matrix.

All shrapnel ammunition is issued fuzed all ready for use and pro-

vided with a waterproof hood over the fuze to exclude moisture.

FRANKFORD ARSENAL COMBINATION FUZE, 31-SEC. MODEL OF 1907 M.

[Plate III.]

This fuze consists of the following paris, assembled as shown in the

drawing :

a Body, bronze. j Compressed-powder pellet in vent lead-

b Closing cap, brass. ing to lower time train.

b l Vents in closing cap. j1

Compressed-powder pellet in lower

62 Safety-wire. time-train vent.

c Upper time-train ring, Tobin bronze. k Lower time train, compressed powder.c1 Washer for time-train ring, graduated, I Brass disk, crimped in place.

felt cloth. m Compressed-powder pellet in vent o.

d Time - train ring, graduated, Tobin yent leading to magazine.bronze. p Powder magazine.

dl Washer for body, felt cloth ._ q Percussion plunger.d? Rotating pin, brass. r Percussion primer..

e Concussion plunger. s Vents leading from percussion primer to

e l Concussion-resistance ring, brass. magazine./ I iring pin, brass. u Bottom closing screw, brass.

g Vent leading to upper time train. v Washer for closing screw, muslin.

h Compressed-powder pellet. w Washer for closing screw, brass.

i Upper time train, compressed powder. x Pins, brass.

The action of this fuze is similar to that of the 21-second fuze usedwith the 3-inch field gun. The principal difference is in the lengthof the time train, and graduations of the time-train ring.

ALLOWANCE OF AMMUNITION.

Shell and shrapnel ammunition is issued by the Ordnance Depart-ment in moisture-proof zinc-lined wooden packing boxes, two rounds

per box.

The annual allowance of ammunition for the instruction of field

artillery is prescribed from time to time in War Department orders.

14

BLANK AMMUNITION

Blank metallic ammunition consists of the following components:A brass cartridge case, a percussion primer, a charge of black

powder, and a tight-fitting felt wad.

THE CHARGE.

The charge to be used in the preparation of blank metallic ammuni-tion for the 3.8-inch gun is 1.75 pounds of saluting powder.

PREPARATION OP BLANK METALLIC AMMUNITION.

Blank metallic ammunition will be assembled at posts, the sameas for 3-inch field guns, or in the field under the supervision of a

commissioned officer, who will be held responsible that it is preparedin the manner prescribed.

FLASH TARGETS.

Flash-target apparatus is issued for use with the 3.8-inch gun as

well as other targets. For detailed information hi this connection,see Ordnance pamphlet No. 1994.

3.8-INCH GUN DRILL CARTRIDGE.

The drill cartridge is a dummy cartridge for use in drilling can-

noneers in the service of the gun.The principal parts are, wood body, bronze base, body guard, split

pin, graduated ring, point nut, and bolt extending through the entire

length.It is the shape of the service shrapnel ammunition and is fitted at

the point with a movable ring, graduated the same as the ring

upon the F. A. 31-second combination fuze. This arrangement is

for the instruction of the cannoneers in fuze setting. No caliber .30

subcaliber cartridge is to be used in the 3.8-inch field gun.There has been developed a 1.457-inch subcaliber gun for use in

mobile guns and howitzers when fitted with its proper adaptors.This gun is to fire a 1.7-pound smoke shell.

THE HAND FUZE SETTER MODEL OF 1913.

[Plate IV.]

DESCRIPTION.

The fuze setter is a device provided for the rapid and accurate

setting of fuzes.

The hand fuze setter provided for the 3.8-inch gun consists princi-

pally of an aluminum case having a serrated rim forming a handle

for turning; a range ring mounted on the range-ring carrier, which

is operated by the knob on the range worm ;a corrector scale mounted

on the corrector-scale support, which is operated by the knob on the

corrector worm, and a guide plate which rests on the projectile.

A slot is cut in the range-ring carrier which engages with the pinon the graduated time-train ring of the fuze. A stop pin is attached

to the corrector-scale support and engages with the stop pin of the

fuze to limit the motion of the fuze setter.

The range worm and corrector worm are mounted eccentrically in

the range -woim case and the corrector-worm case. Upon rotation

this provides an adjustment to accommodate slight variations in

machine operations and to take up for wear between the teeth of the

worms and gears.The range-worm adjusting screw and the corrector-worm adjusting

screw have fiber washers fitted in the end which bear on the collar

of the range and corrector worms for taking up the end motion andto provide sufficient friction to resist accidental turning.

Clamp plugs are provided for locking the range and corrector-worm

cases and the range worm and corrector worm adjusting screws.

OPERATION.

Turn the knob of the corrector worm until the index on the case

registers with the line on the corrector scale, which indicates the

desired correction for height of burst.

To set a fuze, remove the waterproof cap and safety wire. Place

the hand fuze setter over the fuze and turn until the slot in the range-

ring carrier engages with the pin on the graduated time-train ring of

the fuze; the base plate and the upper part of the range-ring carrier

will then bear firmly on the projectile; then turn the fuze setter in a

clockwise direction as indicated by the arrow on the top of the case

until the stop pin on the corrector-scale support engages with the

stop pin on the fuze, and further motion is prevented.An index to register with a line on the fuze to indicate when the

stop pin on the fuze and fuze setter are in contact is attached to the

corrector scale.

HAND FUZE SETTER.

[Plate IV.]

OLD MODEL.

This hand fuze setter consists of the following principal parts:

Range-ring carrier, base, case, range ring, corrector scale, plunger,

plunger spring, clamping shoe, and clamp screw.

On the top of the base is mounted the range-ring carrier to whichis secured by four screws the graduated range ring. On the interior

16

conical surface of the carrier is cut a notch, which engages the fixed

pin of the graduated time-train ring of the fuze.

The range-ring carrier is loosely mounted on top of the base andis held in place by means of the case in such manner that it can be

freely revolved so that the desired relation between the time train-

ring notch cut therein and the fixed plunger in the base may be

readily obtained for the desired setting of the fuze.

In the case which is securely fixed to the base is fitted a clamp-ing screw and shoe, by means of which the range-ring carrier with its

graduated range ring may be securely clamped. On the top surface

of the case is fitted the corrector scale; this is held in place by twoscrews. If after a setting has been made for a given range it is foundthat the shrapnel does not burst at the desired point in its trajectory,the clamping screw is released and the range-ring carrier is revolved

forward or backward as desired until the graduation mark on the

range ring comes opposite the proper graduation mark on the cor-

rector scale. For making the adjustment for different heights of

burst, the corrector scale has been graduated and fitted to the case in

such manner that if a lower point of burst is desired the range gradua-tion on the range ring should be set to one of the lesser graduationmarks on the corrector scale, and if a higher point of burst is desired,

then the graduation on the range ring should be set to one of the

higher graduations on the corrector scale.

ADJUSTMENT.

As the parts are adjusted by the manufacturer before issue and

ample provision made for lubricating the parts by filling the interior

of the case with a heavy grease, there should be but little need for

adjustment for a long time.

Two oil holes closed by screws are provided in the case for emer-

gency use only.

Reference marks are placed on the case and worm cases to indicate

the normal adjustment.

ADAPTABILITY TO OTHER GUNS.

This fuze setter is adaptable to all projectiles using the 31-second

combination fuze by using suitable range ring, corrector scale, guide

plate, and index bar. The corrector scale fov guns has 60 gradua-

tions, 30 being the normal. The range ring for guns has but one

scale graduated thereon. The index bar for guns has a fixed pro-

jecting arm on which the index is engraved. The guide plates are

suitably marked for the projectile to which they ,re fitted. The

range rings and corrector scales are marked wi t h the name of gun.

17

The 3.8-inch Gun Carriage, Model of 1904.

WEIGHTS, PRINCIPAL DIMENSIONS, ETC.

Weight of carriage, complete pounds. .

Weight of gun and carriage, complete do

Weight at end of trail, carriage limbered do. . .

Diameter of wheels inches .

Width of track do. . .

Length of recoil of gun on carriage do. . .

Height of axis of gun do

Height of line of peep sight do

Length of peep sight radius do

Maximum angle of elevation degrees.

Maximum angle of depression do

Amount of traverse of gun on carriage mils.

2,337

3,875195

58

60

58.5

44.567

47. 068

36.75

15.5

5

106

Nomenclature of parts of carriage (complete) .

No. Name of part. Location.

Propertyclassifica-

tion.

ClassSec-tion.

AxleTrail, consisting of

Flasks (right and left)Axle bearings (right and left)Axle bushing, rightAxle bushing, left

Axle-bearing bolts

Elevating gear transomConsisting of

Transom, front

Transom, rearTransom bearingsElevating gear cross transomsTransom, intermediateBolts for elevating gear tran-som.

Tool boxConsisting of

Tool box transom, frontTool box transom, rearTool box bottomTool box lid

Tool box coverTool box fastening

Consisting of

HandleHandle lugsHandle springsHinge, maleHinge, femaleHandle guide rivetHandle stop rivetLock eye

Rear sight box bottomRear sight shank packing No. 1

Rear sight shank packing No. 2Rear sight shank packing No. 3Rear sight shank packing No. 4

Rear sight shank packing No. 5Lock chain rivet with chainCarriage bolts with nuts and washers..Wheel guard transom

Form right and left side of trail

Riveted to front ends of flasks. . .

In right axle bearing .

In left axle bearing.. .

Clamp bearings to axle.Riveted between flasks .

Forms front of elevating gear transomForms rear of elevating gear transomIn cross transomsBetween front and rear transomsRiveted between flasksHold cross transoms in place

Riveted between flasks.

.do.

.do.Tool box in trail

Hinged to tool box coverForms top of tool boxFastened to lid and rear transom. IV

At rear of tool box lid

Riveted to rear tool box transomRiveted to tool box coverRiveted to tool box lid

Riveted to tool box coverRiveted to tool box lid. . .

.do

SpadeSpade edge....FloatFloat brace . . .

7781017 3

Riveted to trail coverForms bottom of rear sight boxFastened to rear sight box bottomFastened to rear sight box coverFastened to rear sight box bottomFastened to rear sight box coverFastened to rear sight box bottomRiveted to left flask2 for packing No. 3; 2 for packing No. 5. . .

Riveted between flasks at rear end of rear

sight box.Riveted to ends of flasksRiveted to face of spadeRiveted to spade and flasksRiveted to bottom fctailand float . . .

Nomenclature of parts of carnage (complete) Continued.

Name of part Location.

Propertyclassifica-

tion.

Ilass.tion.

Trail, consisting of Continued.Lunette bracket

Handspike fasteningWheel guardsTrail brace, rightTrail brace, left

Trail cover

Trail handle, right .

Trail handle, left...

Seat bracket, right.Seat bracket, left...

Riveted to float

Riveted to top of float

Riveted to flasks and wheel guard transom.Right flask to right seat axle bracketLeft flask to left seat axle bracketRiveted to flasks and front tool box tran-som.

Riveted on float and spade...do...

Elevating and traversing lock, consist-

ing of

Cradle lock bracket ..................Hook ................................Hook center .........................Link .................................Link pins ............................Cradle lock spring..... ...............Cradle lock pin.......................Long spring pins .....................Cradle lock bracket pin ..............

Sponge staff socket.......................

Sponge staff stop .........................

Sponge fastening .........................

Consisting of

Hasp ............................Bolt ................ .............

Twisted coil chain ...............Pin ..............................

Name plate ..............................

Handspike ...............................

Handspike bolt ..........................

Handspike bracket .......................

Handspike fastening .....................

Handspike fastening spring ..............Lunette with nut ........................Padlock..................................Bolt snap ................................Padlock chain rivet ......................

Cradle, consisting of

Angle, right ..........................

Angle, left ...........................Cradle body ..........................Cradle rear end ......................Cradle reinforce plate ................Cradle washer........................Guide liner, right ....................Guide liner, left ......................Cradle top plate......................Cradle head ..........................

Consisting of

Special screw ................Cradle head stop .............Cradle head stop plug ........

Cradle head stop spring ......

Bushing .......................

Retaining-ring pinPintleOil tubesCradle-lock lugBracket seat, firiing handleRecoil-indicator guideQuadrant fasteningShoulder-guard fasteningsShoulder-guard clipShoulder-guard braceRear-sieht bracket supportFront-sight bracket supportRetaining-rin? bolt fasteningsSpring-support guide, right

Spring-support guide, left

Retaining-ring bolts with nuts

Retaining-ring bolt pins

Riveted to right flask...Riveted to left flask

Riveted to seat brackets .

Riveted to elevating gear transom, rear.Pinned to cradle lock bracketRiveted to hookPinned to hook centerFor linkPinned to bracket and linkPins hook and hook center to bracket . .

1 for spring; 1 for spring stopRiveted in bracket for spring stopRiveted to right flask

...do....do.

Pinned to fastening .

On spoiAttached to bolt .

On sponge fasteningRiveted on top of tool box cover .

Carried on trail coverSecures handspike to fulcrum . . .

Riveted to float

On trail coverHolds fastening to trail coverIn lunette bracketFastened to chain on left flask...

.do.For securing chain to left flask.

Riveted to right side of bodyRiveted to left side of bodyBelow gunRiveted to bodyRiveted to rear endBetween rear end and reinforce plate.Riveted to body and top plate

do.Riveted to angles and body .

In retaining ring

In cradle head . . .

In retaining ring .

....do...do...In cradle headIn retaining ringRiveted to cradle bodyIn pintleRiveted to cradle body near rear end.Riveted to cradle bodyRiveted on right side of body

.do.Riveted on left side of body

doSecures shoulder guard to cradle.

Riveted on left side of body

Riveted to cradle body.Riveted inside cradle. .

....doIn bolt fastenings...do

IV

1!)

Nomenclature of parts of carri'i'js (complete} Continue;!.

Name of part. .Location.

Propertyclassifica-

tion.

Class.Sec-tion.

Shoulder guardShoulder-guard pinShoulder-guard bushingDust guardCradle brush

Consisting of

Brush plate Part of cradle brushRear f?lt plate doFront f ?lt plate do

Recoil indicator In indicator guide. .

On rear end of cradleSecures shoulder guard to cradle.Braced in shoulder guardOn cradle guide linersRiveted to dust guard

Consisting of

SpringSlide ,

Recoil-indicator throwRecoil-indicator pointerRecoil-indicator hinge pinR ecoil-indicator hingeFiring mechanism, consisting of

Firing-shaft bracketFiring shaft

Firing-handle hubFiring handle

Consisting of

PlunderSpringFiring-shaft bracket pin

Shaft-trip col lar

Trip latch

Trip-latch plungerTrip-latch springTrip-latch pinTrip-collar pinHandle-return springShaft-return springAdjusting screwAdjusting-screw check nutBracket studs and nuts

CylinderCylinder-end stud

Cylinder-end stud nutScrew for cylinder endCounter-recoil buffer

Cylinder headCylinder-head screw eyesCylinder-head washerGlandStirrupFront-spring supportRear-spring supportOuter counter-recoil springsInner counter-recoil springs .-

Spring separators, inner

Spring separators, outer

Cylinder supportRings, packing

PistonPiston rodPiston-rod plugPiston-rod nutFilling plug with gasketVent plugVent-plug washerPiston-retaining screwsPiston-rod plug pinRocker, consisting of

Pintle socketPintle bushingRocker barsPintle-socket front clip linerPintle-socket rear clip linerPinth-socket side clip liner, rightPintle-socket side clip liner, left

Traversing plate liner pinTraversing plateTraversing-plate liner

Riveted to slide

Attached to hinge .........Riveted to indicator slide.For hinge .................Riveted to dust guard ____

Bolted to bracket seatIn bracketOn end of firing shaftAssembled to firing-handle hub

In handle....doIn bracketOn end of firine shaftSecured to trip-latch plungerIn firing-handle hubOn trip-latch plungerSecures trip latchFastens trip collar on shaftFront end of bracketRear end of bracketIn bracketOn adjusting screwFor attaching bracketIn cradleConnects cylinder to gunOn cylinder-end studPrevents cylinder end from unscrewing. ..

Screwed and pinned on cylinder-end stud. .

Front end of cylinderCylinder headIn cyl inder headScrewed on headInside of cradleFront end of stirrupRear end of stirrupOutside of stirrupInside of stirrupSeparate imnr springs .

Separate outer springsInside of front end of stirrupGarlock hydraulic waterproof, 0.25 inchsquare.

At rear end of piston rodIn cylinder

doAt front end of piston rodScrewed in end of piston rodIn cylinder head

doSecure piston to rodFastens plug in piston rod

On axle

Upper surface of socketFrom pintle socket to traversing clipRiveted to front clipRiveted to rear clipRiveted to ri^ht-side clipRiveted to l3ft-side clip

Supports ons end of liner

R iveted to cradle bodyPinned and screwed to traversing plate

IV

Nomenclature of parts of carriage (complete} Continued.

Name of part.

Rocker, consisting of Continued.Azimuth pointerDowel for azimuth pointerAzimuth-pointer screws

Traversinsr-plate liner screwTraversing mechanism, consisting of

HandwheelHandleSpindleTraversing worm shaft

NutTraversing upper bushing pinTraversing clip

Traversing clip upper bushing . . .

Traversing clip, lower bushing . . .

Traversing stop pinAzimuth scale . .

,

Azimuth scale screw No. 1

Azimuth scale screw No. 2

Elevating mechanism, consisting of

Elevating pin

Innerelevatingscrew. . .

Outer ele mating screw . .

Ring, brassEle vating gear bracket

Elevating bevel gear ^

Elevating gear bronze bushingsElevating gear keysEle vating crank handlesWashersElevating bevel pinionsElevating bevel pinion taper pins'Elevating crank shaft, rightElevating crank shaft ,

left

Elevating screws, dust guardDust-guard screw

Axle seats and foot rests, consisting of

Seat, right

Seat, left

Seat support, rightSeat support, left

Seat-axle bracket, rightSeat-a- le bracket, left ,

Seat arm, riihtSeat arm, left

Seat-arm guard, rightSeat-arm guard, left

Seat-arm connection , right

Seat-arm, connection, left

Seat-filler piecesSeatstiffenersSeat-arm supportsSeat-support connection, right

Seat-support connection, left

Seat-support connection bolts

Shield brace bolts with nutsDiagonal brace (rear end inside) right.I >i:r.onal brace (rear end inside) left. . .

Diagonalbrace (rearend outside) rk'ht

Diagonal brace (rearend outside) left. .

Foot-rest frame, ri?htFoot-rest frame, left

Foot-rest plate, rightFoot-rest plate, left

Foot-rest plate attachment, rightFoot-rest plate attachment, left

Seat-axle bracket bolts with nuts. . .

Foot-rest bolts, inside, with nuts. . .

Foot-rest bolts, outside, with nuts. .

Foot-rest support bolts with nuts .

Upper inside foot-rest supportUpper outside foot-rest support . . .

Location.

Traversing plate .

Secure pointer to traversing plate .

Attaches traversing-plate liner. . .

On worm shaftOn handwheelThrough handleIn bearing on traversing clip. . .

On worm shaftSecures upper bushingRiveted to rocker barsIn upper end of bearingIn lower end of bearingOn traversing clip

doSecures scale to traversing clip .

...do...

Through elevating screw and traversingclip.

Between rocker and outer elevating screw . .

Between inner ele vating screw and elevat-

ing gear bracket.

On bearing in trail transoms . . .

In elevating gear bracketIn bracketRi veted in bevel eearOn elevating cranksFor handlesOne on end of each crank shaft.

Secure pinions to crank shafts. .

Through ri"ht flask

Throueh left flask

Lower end of bracketSecures dust guard

Supports ri?ht seat.

Supports left seat

Upper ri^ht end of main shield

Upper left end of main shield

Ri veted to right seat arm bracketRi eted to left seat arm bracketFastened to right seat armFastened to left seat armRi v eted to right seat

Riveted to left seat

Front of seatRiveted to rear edge of seats

Support rear ends of seat armsBolted to ri"ht a-le bracketBolted to left a* le bracketFor seat-suoport connectionsSecure shield Lrace to shield bracketFor right seatFor left seatForri ht seat

For left seatFastened to right foot rest supportsFastened t o lit fo:>t-rest supportsOn fool -rest frame, rightOn foot-rest (rame, left

A 1 1 aches Co >t -rest plate -

.do.

Secure brackets to axleSecure foot-rest supports to axle bearing. .

Secure foot-rest supports to seat-axlebracket.

Secure supports to foot-rest framesFrom axle bearings to foot-rest framesFrom seat-axle brackets to foot-rest frames

Propertyclassifica-

tion.

"lass.

IV

Sec-tion.

21

Nomenclature of parts of carriage (complete) Continued.


Propertyclassifica-

tion.

Sec-tion.

Axle seats and foot rests, consisting of

Continued.Lower inside foot-rest support, right . .

Lower inside foot -rest support, left

Lower outside foot-rest support, right. .

'

Lower outside foot-rest support, left. . .

Inside foot-rest support pin

Outside foot-rest support pin

Foot-rest braces :

Road brake, consisting of

Brake beam, rightBrake beam, left <

Brake-beam pin i

Brake-lever hinge pinBraVe-axle bracket bushing (A =3.2) .

Brake-axle bracket bushing (A= 1.5).

Bra^e-axle bracket boltBraVe-axle bracket-bolt nutsBrake axle bracket

Segment rackBrake-lever hingeBrake-lever springBrake-lever stopBrake pawl ;

Brake segmentConnecting-rod endsConnecting-rod pinsRock shaftRock-shaft bracket

Key, steel

Kev, steel

Brake shoesBrake-shoe tap boltsBrake rods

SpringsSpring covers

Spring-cover heads ,

Brake crankBrake lever

Apron latches, consisting of

Apron-latch bracket

Apron-latch pinApron-latch bodyA pron-latch lever

Apron-latch lever pinAproji-latch plungerPlunger eyePlunger-eye pinApron-latch springApron-latch bushingApron-latch bridge, right

Apron-latch bridge, left

Apron-latch bridge claspApron shield, consisting of

Apron

From axle bearing to foot-rest frame,

.do.

Apron hingesApron-hinge pinA pron-latch staples

Main shield, consisting of

Main shield...

HoodHood angleShutter, peep-sight portShutter, panoramic-sight portShutter supportShutter-latch baseShuttT-latch plungerShutt r-latch springHinge, sight-port shutter

Hinge pin, sight-port shutterFiller, shutter hingeShutter latch plunger nut

From seat axle bracket to foot-rest frame. .

doFastens upper inside supports to axle

bearing.Fastens upper outside supports to seat

axle brackets.Brace foot-rest plates

Pivoted to right foot-rest framePivoted to left foot-rest frameFoot-rest framesPinned in brake lever hingeFor right bracketFor left bracketSecures bracket to axle

For boltsBolted to axleRiveted to brake segmentOn rock shaftOn brake-lever hinge pinRiveted near bottom of brake segmentPinned to bra^e-lever hingeRiveted to brake-axle bracketOn ends of brake rods =

Connect ends to brake beamsIn bearings bolted to axle

Bolted to axleRock shaftOn brake rodsEnds of brake beamsSecure shoes to beamsBetween brake-rod ends and springsInside of sprinc coverEnds of brake rods .>

Slide on brake rodOn end of brake shaft

...do

IV

On apron-latch bridgeForm pivot for apron-latch body .

Pivoted on blockPivoted on bodies

Seated in bodiesScrewed on end of plungerAttach plunger eye to lever

In bod}* around plungerScrswed into bodyFastened to clasps....doAround foot-rest supports

Hinged to axle bearings and axle-seatbracket.

Riveted to apronThrough apron hinges and bracketsRiveted to apron

Bolted to axle bearings and axle-seatbracket.

Riveted to main shieldRiveted to hoodHinged to shield

Riveted to shutter.......doIn shutter-latch base.

.do.On shieldIn hing'sBetween hinge and shield .



Class.

Propertyclassifica-

tion.

Sec-tion.

Main shield, consisting of Continued.1 Lower center shield hinge Riveted to main shield.2 Wing-nut studs, front Front of main shield .

Wing-nut sttids, rear Rear of main shield . .

Lower bushing For wing-nut studs .

3 Upper bushing doShield brace bolts with nuts Fastens shield braces to clips.

Wing nut pin washer On pinsShield brace clip, right Riveted to shield .

Shield brace clip, left do.Lower shield bolts with nuts

! Fasten main shield to axle bracketsSeat shield bolt inside, right, with nut. .

j

Fasten seat to shieldSeat shield bolt inside, left, with nut.

.jdo

Seat shield bolt outside, with nuts doTop shield, consisting of

Top shield Hinged to main shield

Top-shield hinge, upper half Riveted to top shield

Top-shield hinge, lower half Riveted to main shield

Fastening hinges Riveted to top shield

Fastening-hinge pins For fastening hingesTop-shield hinge pin For hingesTop-shield fastening For holding top shield secure

Upper center shield hinge Riveted to top shield

Range quadrant case bracket, consistingofBracket Bolted on rear face of main shield, right

side.Left spring support Riveted to bracket

Right spring support doRange quadrant casa, consisting of

Lid Swung between springs by box supportsin bracket.

Body A.. doBox support, right Riveted on caseBox support, left doBearing plate, upper right Riveted to right box supportBearing plate, lower right doPacking-block bas3 i In bottom of caseCase hinges, upper half Riveted on lid IV 3Case hinges, lower half Riveted to back of casa

Hasp hinge!

Riveted on case lid

Hasp Riveted on case front

Wing nutI

Riveted on case

Wing-nut pin and washer doWing-nut pin reinforce I doChain eye ! doPadlock chain Attached to chain eyeLeather-covered packing blocks Screwed to inside of case , .

Bolts with nuts;

Secure case to bracket375 pipes On bolts

Lower r inforce Riveted to bracket

Upper r 'inforceI

doBox bracket bolts with nuts doSprings, quadrant case I Not interchangeable with sight case

springs.Padlock Fastened to chainBolt snap do

Panoramic sight-case bracket, consistingof

Bracket, sight case Bolted on rear face of main shield, left side. .

Spring support, right i Riveted to bracket

Spring support, left doPanoramic signt case, consisting of

Packing-block base In bottom of case

Lid Suspended between springs and bracket . . .

Body doBottom doBox supports Riveted to case

Hasp Riveted on case front

Hasp hinge Riveted on case lid

Case hinges, upper half doCase hinges, lower half Riveted to back of case

Filler block In case

Lower reinforce Riveted to bracket

Upper reinforce doWing nut Riveted on case >

Retaining PinyBolt- >

i

front SiifMBracket-

.j

r-fool Pest

\ Apron Latch

Brake Shoe,

BrateBemn--

r Axle Seat

i r- -Brake Lever

! Upper Inside Fool first

"upport

Upper Outside Foot Pest

SupportLower Outside Foot test ^

Support-

Elevating CrankHandle- -

Seat- f-

Shoulder Guard

Block Qzrrier-

Operalinq Lever

PLATf VJ

--Brake Rod

-Shield Brace

-Apron Latch

SealArm

3.8rlnch Gun Carriage. Model of1904

Plan.

Z8 J? X40444S52X6064&8 76 8O 84 8& io4 /as ie 116 INCHES.

23


No.

24

sions given in the description of the 3-inch gun carriage will be dis-

regarded, as the 3.8-inch gun has a larger carriage. Numbers of

carriages will also be disregarded.

WHEELS.

The wheels are a heavier type of the Archibald pattern, 58 inches

in diameter, with 4-inch tires. The hub cap is of forged steel andno hub band or hub-latch plunger is used.

The wheel fastening is of a different design, being made in halves

and pinned together by means of a pin and interlocking lugs at oneend and a hasp and split pin at the other. The fastening has a squarethread, onto which the wheel is screwed. The wheel is locked to the

fastening by means of the hasp and staple.

TRAIL.

The only difference noted in the trail is that the rear ends of the

flasks are not flanged outward at the points at which the float is

attached.ELEVATING GEAR.

The functioning of the elevating gears is the same, but differs in

construction. In place of the angle the 3.8-inch gun-carriage rocker

has two steel bars threaded in the pintle socket at one end andriveted to the traversing clip at the other. The traversing clip

serves as a point of attachment for both the traversing and elevatingmechanism.

TRAVERSING MECHANISM.

The traversing mechanism consists of the traversing worm shaft,

mounted in a bearing in the traversing clip. The bearing is inclined

30 to the horizontal and is bushed at either end. Through an

aperture provided for the purpose the worm thread on the traversing

worm shaft engages with the rack on the traversing plate, which in

turn is riveted to the cradle. A pin, inserted in the traversing clip

after assembly, serves as a traversing stop. Two small lugs, one at

the center and one at the right of the traversing plate, limit the

motion of the gun to right or left. The traversing worm shaft

extends upward and to the left, terminating in a seat for the trav-

ersing handwheel. Turning the handwheel causes the cradle, with

the gun, to be traversed, the amount of motion provided being 106

mils, 53 on each side of the axis of the carriage.

CRADLE COMPLETE.

The cradles complete are similar in design and operation except

as noted. The 3.8-inch gun-carriage cradle has three steel forgings

riveted to its under side the pintle, traversing plate, and cradle-lock

lug. The traversing and elevating mechanism are attached at the

same point.

ACTION OF MECHANISM DURING RECOIL.

The firing mechanism is as described in the handbook, Form 1659,

for carriages after No. 168.

AMMUNITION CARRIERS.

There are no ammunition carriers mounted on the 3.8-inch gun

carriage, and all references thereto in the handbook, Form 1659, should

be disregarded.ROAD BRAKE.

The spring cover and spring-cover end mentioned in the hand-

book, Form 1659, are integral on the 3.8-inch carriage.

There is but one rack riveted to the brake-segment bracket.

THE SHIELD.

The apron is hinged to the axle-seat brackets and the axle bear-

ings and reaches to within 5.25 inches of the ground. For traveling,

it is swung up under the seats and held by two apron latches, whichare attached to brackets riveted to the foot-rest supports. The mainshield is rigidly attached by bolts to the axle-seat brackets and axle

bearings and is braced by two shield braces, reaching from its uppercorners to the foot-rest frame. It has two wing nuts for securing the

top shield when folded down and has a sighting port and a gun port.

The latter is made a minimum port, and the shield is stiffened by a

hood riveted to its front face. The upper edge of the top shield is

64 inches from the ground.

TO FILL THE RECOIL CYLINDER.

In the instructions regarding the filling of recoil cylinders the fol-

lowing important point should be noted in addition to the instruc-

tions given in the handbook: The cylinder should ~be refilled after anytest which requires the retracting of the gun.

TO DISMOUNT THE TRAVERSING MECHANISM.

The gun being dismounted, remove the traversing stop pin fromthe clip and traverse the cradle (muzzle end) to its extreme left

position. This wih1

disengage the rack from the worm on the shaft.

To remove the worm shaft, first remove the handwheel, next the nut

from the upper end of the shaft, and then unscrew the bushing from

the traversing clip, which will allow the shaft to be withdrawn. Toassemble the traversing mechanism, the above operations are re-

versed.TO REMOVE A WHEEL.

First, remove the hub cap by unscrewing with the spanner fur-

nished, remove the lock washer, undo and throw back the haspattached to the wheel fastening, and then unscrew the wheel from the

wheel fastening, which will allow its being removed.7781017 4

26

TO REMOVE A WHEEL FASTENING.

The wheel having been removed as directed above, withdraw the

0.25 split pin; the wheel fastening, being in halves and hinged at the

bottom, can then be removed from the axle.

ADJUSTMENT OF SIGHTS.

VERIFICATION OF PARALLELISM OF LINES OF SIGHT AND AXIS OF BORE.

information in handbook 1659 applies to the 3.8-inch gun, with

the exception of that shown in figure 1.

FIGURE1

THE 3.8-INCH GUN LIMBER, MODEL OF 1904.

[Plate VIII.]

WEIGHTS, DIMENSIONS, ETC.

Weight, complete, empty pounds. . 1, 102

Weight of tools and equipment carried do. .

Weight of ammunition carried do 682

Weight, completely equipped and loaded do 1, 875

Weight of gun, carriage, and limber, completely equipped and with 18 rounds

of ammunition pounds.Rounds of ammunition carried in limber chest number.

Diameter of wheels : inches .

Width of track do. . .

Free height under limber (and carriage) do. . .

Turning angle with carriage degrees .

Turning angle with caisson do

5,75018

58

60

21

76

75

27

Nomenclature of p<trts of limber.

No.

Nomenclature of parts of limber Continued.


Class.

Pole, complete, consisting of

Pole bodyPole plugNeck-yoke counter-stop springNeck-yoke counter-stop pinNeck-yoke counter stopNeck-yoke stopNeck-yoke chafing plateNeck-yoke stop separatorNeck-yoke stop-rivet separatorPole-pin bushingButt reinforce.

Oil-can holder, complete, consisting of

Oil-can holder...

Riveted in bodyBears on neck-yoke counter stop .

Riveted in bodyHinges on counter-stop pin ,

Riveted to bodyRiveted to upper side of bodyTnsida of body

'

do ."

doRiveted to inside of body

Oil-can holder bracketOil-can holder haspHasp .hingeHasp-hinge pin

Ammunition chest, complete, consistingof

Chest bottomChest doorChest frontChest topFront diaphramMiddle diaphramRear diaphramConnecting pieceChest front reinforceDoor stiffcnerOuter bearing plateSmall bearing plate

Do...Do

Chest rail, right . . .

Chest rail, left.

Chest rail connectionConnection pinDoor hinge (in two pieces)Door-hinge pinDoor-hinge reinforceDoor handleDoor-handle reinforceBucket holderBucket-holder transom, rightBucket-holder transom, left

Corner reinforceLock bar, rightLock bar, left

Lock-bar hingeLock-bar hinge reinforceLock-bar outer hinge, rightLock-bar outer hinge, left

Lock-bar outer hinge reinforce, right.Lock-bar outer hinge reinforce, left. . .

HandrailHandrail foot

'

Handrail forward bracket, rightHandrail forward bracket, left

Handrail rear bracket, rightHandrail rear bracket, left

Reinforce washer...

Hinge bearing plateLeft polo prop bracket . .

Right pole prop bracket.Ax-handle bracket ,.

Ax-head bracketAx-handle guardHatchet-blade bracket . .

Hatchet-handle fastener.Lantern bracket

Lantern-strap fastener...

Pick-ax chafing plate

Riveted to right side of chest and bracketsRiveted to right side of chest near topFastened to hasp hingeRiveted to bracketPins hasp to hasp hinge

Constitute body.

Riveted to chest bodydo

....doConnect rear and middle diaphram.Riveted to chest frontRiveted around edge of doorRiveted to door...do....

.do.

..In.

Riveted to bottom of chest.do.

Riveted to chest rails

Pin-chest rail connections to side rails

Riveted to door and chest topFor door hingesRiveted to chest top with hingesRiveted to doorRiveted to door with handleRiveted to top of chest; forms seat

Riveted to bucket holder and chest top. .

.do.Reinforce corners of bucket holder

Supported at ends by hingesdo

Riveted to chest bottomRiveted to chest bottom with hingeSupports outer end of right lock bar

Supports outer end of left lock barRiveted to chest bottom with outer hinge

.do.Riveted in handrail bracketsRiveted to sides of chestRiveted to right handrailRiveted to left handrailRiveted to right handrailRiveted to left handrail8 under handrail-foot rivets; 4 under pick-head bracket rivets; 2 under ax-neadbracket rivets.

Riveted to door with two middle hinges.Riveted to top of chest

.do.

Riveted to left side of chest. .

.do.

[do!

Riveted to chest front

dodo

Fastened to lantern bracket.Riveted to bottom of chest. .

Propertyclassifica-

tion.

Sec-tion.

IV

Nomenclature of parts of limber Continued.

No.

30

The pickax is carried in brackets under the chest to the left of the

middle rail, the shovel being carried to the right of the rail.

The hatchet is carried in two brackets riveted to the front of the

chest, and the pole prop is carried in brackets attached near the rear

edge of the top plate.

The oil cans are carried in a holder made of flange steel riveted to

the right side of the chest.

No ammunition is carried in limbers used with the gun, since the

weight would be too great.

THE 3.8-INCH GUN CAISSON, MODEL OF 1904.

[Plate IX.]

WEIGHTS, DIMENSIONS, ETC.

Weight, empty, without implements and ammunition pounds. . 1, 426

Weight of tools and equipment carried do 99

Weight of ammunition carried do 1, 516

Weight, complete, equipped and loaded do 3, 041

Weight with limber, completely equipped and with 58 rounds of ammunition,

pounds 4, 916

Rounds of ammunition carried number. . 40

Diameter of wheels inches. . 58

Width of track do. ... 60

Free height under caisson do 22

Turning angle degrees. . 75

Nomenclature of parts of caisson.

No. Name of part.

Wheels and wheel fasteningsAxleMiddle-rail angle, right ,

Middle-rail angle, left

Middle-rail plateSide rail, right ,

Side rail, left

Filler platesPintle with bearing, complete, consistingof

PintlePintle latchPintle-latch pin with split pinPintle-latch springPintle bearing (in 2 parts)Pint U> springI 'int le-spring pinPintle-bearing bolts with nuts

Name plateBrake channelChannel supportsCross braceFrame handle, rightFrame handle, left

Frame reinforce plateLunette bracketLunette bracket filler plateLunette with nut

Location.

Same as on carriage .

Riveted to axle and side rail .

...do...Riveted to middle rail angles.Riveted to axle lugs

doRiveted to side rail fliges . . .

Seated in pintle bearing.On pintleForms pivot of latchOn pintleRear end of middle rail.

In pintle bearing.do.

Class.

Secures bearing to middle rail

Riveted near rear end of middle rail.

Fastened to side rails

Fasten channel to side rails

I ; i vet cd to side rails

Front end of side rails

Propertyclassifica-

tion.

.do.

.4o.

.do.

Under lunette bracketSecured in lunette bracket.

Sec-tion.

IV

31

Nomenclature of parts of caisson Continued.

Name of part. Location.

Propertyclassifica-

tion.

Sec-tion.

Caisson prop, complete, consisting of

Prop eye, right

Prop eye, left

Prop tubesProp foot

Fastening pinFastening-pin washer nutFastening nutProp-chain clamps .'

Prop chain

Prop hookProp-chain buttonProp-chain guides

Box bottom, rightBox bottom, left

Brake-box fillers

Brake-beam guide, rightBrake-beam guide, left

Front brake brace, rightFront brace brake, left

Rear brake brace, rightRear brake brace, left

Brake beamsBrake shoesBrake-shoe tap boltsBrake-beam pinsBrake-rod endsBrake rods

IncludingBrake-rod springsBrake-spring covers

Brake-spring cover headsBrake-spring cover ends

Brake-rod pinsBrake cranksBrake-crank bolts with nutsBrake shaft with two keysBrake-shaft bearingsBrake-shaft bushingsBrake-segment bracket

Brake-segment bushingBrake-segment bracket bolt and nutBrake segmentBrake-segment brace

Brake-segment guardSegment rack ,.

Front separatorRear separatorRear-separator boltBrake leverBrake-lever catch

Spare-pole fasteningFastening nutFastening washersSpare-pole bracketSpare-pole rest

Pick-mattock bracketShovel-handle supportStrap fasteners for pick mattock

Riveted to right tubeRiveted to left tubeSupport poleRiveted to lower ends of tubes . . .

Through prop eyesOn fastening pinSecures prop to vehicleOn prop tubesSecured to propOn chainRiveted into lunette brawfetRiveted to cross braceRiveted to ends of brake channel....do...

.do.Riveted to brake channel . .

....doBrake channel to side rails .

...do...dodo

Seated in brake boxesOn end of brake beamsSecure shoes to beamsForm pivotsConnect rods to brake beams .

Connect beams to cranks

On brake rodsdo

....do

....doSecure rods to beams and cranks .

On brake shaft

Clamp cranks on shaftIn shaft bearings on axleRiveted to axle lugs

Clamped on right end of axle.On brake-segment bracket

Clamps bracket to axleRiveted to bracketRiveted to brake segmentRiveted to segment

.do.Between segment and guard.....do

Through rear separatorOn end of shaftRiveted on brake leverOn caisson-prop pinOn spare-pole fasteningOn spare poleRiveted to middle rail

Riveted to brake channel. . .

.do.

Ammunition chest, complete, consistingof

Chest top plateChest bottom plateChest front plateChest doorRear diaphragmMiddle diaphragmFront diaphragmDiaphragm brace, rightDiaphragm brace, left

Diaphragm tees

Riveted to cross braceRiveted to pick-mattock bracket and brake

channel.

Constitute chest body

Riveted to chest.do...do.

Connecting pieces .

Chest reinforceChest-front angle..

Between front and middle diaphragms....do4 for rear diaphragm, 3 for middle, and 3

for front diaphragmsConnect rear and middle diaphragmsRiveted to bottom of chestRiveted around edges of chest front

IV

32

Nomenclature ofparts of caisson Continued.


Propertyclassifica-

tion.

Class.Sec-tion.

Ammunition chest, complete, consistingof Continued.Chest-front braceAx-head bracketAx-handle supportAx-strap fastener

Grip-strap fasteners

Paulin-strap fastenersShovel supportReinforce washers

Pick-mattock handle supportWrench holder for spanner wrench

DoWrench holder for nut wrench

Do...

Stiffens chest frontRiveted to front plate

dodo...

Riveted to chestdo

Riveted to bottom of chestUnder rivet heads for pick-mattock handlesupport and shovel support

Riveted to left side of chest....do

.do.

.do.

Strap fasteners for wrenches Riveted to chestChest rail, right Riveted to bottom plateChest rail, left do

Riveted to chest bottom and chest rails. . .

Riveted to chest rails

....do

....doRiveted to sides of chest. . .

Riveted to handrail shanksRiveted to sides of chest....doRiveted to inside of door . . .

....doRiveted to doorLock bar hinges

do

Attached to lock bar ....

Riveted to bottom plate.Riveted to doorFor studsPivoted on studs

Filler piecesApron-latch hinge, right

Apron-latch hinge, left

Foot restHandrail shanksHandrailsDoor-prop guide, right

Door-prop guide, left

Door tees

DoDoor angleLock bar, right

Lockbar,leftLock-bar hinges Riveted to bottom platePadlock-chain rivets On lock bars

Wing-nut pins Riveted to door . .

Wing nuts On wing-nut pinsWing-nut pin washers

\

On pinsPadlock with chain and bolt snap | On lock barChain with two chain rings and bolt

|

snapPadlock-chain stapleDoor-prop studsNutsDoor propsDoor-prop rivets

Door-hinge pinsDoor hinges, maleDoor hinges, femaleDoor handleFuze setter latch hinge

Apron, complete, consisting of

ApronEnd hinge filler piecesCenter hinge, rightCenter hinge, left

End hinge, rightEnd hinge, left

Apron staple, right

Apron staple, left

Hinge pinsApron latches, complete, consisting of

Hinge pinsLatch bodiesLatch leversLever pinsLatch plungersLatch clevises

Latch-cleyis pinsLatch springsLatch bushingsLatch hinges

For hingesRiveted to doorRiveted to top plate .

Riveted to door...do

Hinged under axleRiveted to apron....do....do....do....do....do....doSecure apron to axlePivoted on hinges on chest rails.

Attach latch body to hingePivoted to latch hingesPivoted on bodiesForm pivots for levers

Seated in bodyScrewed on end of plungerAttach clevis to leverIn body around plungerScrewed into bodyRiveted to chest rails

IV

33

DESCRIPTION OF THE 3.8-INCH GUN CAISSON, MODEL OF 1904.

The first three paragraphs in the description of the 3.8-inch gunlimher will also apply to the caisson, the description of the 3-inch

gun caisson, Model of 1902, in handbook 1659 being used.

The following paragraphs in regard to the ammunition chest will

take the place of the corresponding ones in handbook 1659:

The caisson ammunition chest is rectangular, and is built up of

flange steel formed to shape and riveted together in a similar manner

to that of the limber, but is larger, having provision for 40 rounds

of ammunition arranged in 4 horizontal rows of 10 rounds each.

The front of the chest is made of armor plate 0.15 inch thick. Asteel angle is riveted to the armor plate all around its edge and the

projecting leg of the angle, riveted to the body of the chest. Three

steel tees placed vertically and riveted to the inside of the front plate

give stiffness to the latter.

Inside of the chest the cartridges are supported by three vertical

diaphragms flanged all around and riveted to the body of the chest.

Each diaphragm is perforated with 40 flanged cartridge holes. Cor-

responding holes in the middle and rear diaphragms are connected

by conical brass connecting pieces which are similar to those used in

the limber chest. The front and middle diaphragms are rigidly

braced to each other by two flanged steel braces riveted between

the two.

To the front and middle diaphragms are riveted vertically three

steel tees and to the rear diaphragm four steel tees.

Nine instead of seven steel tees are riveted to the inner face of the

door.

The description of the bracket fuze setter and attachments in

handbook 1659 will be disregarded, as there is no bracket fuze setter

on this caisson.

OTHER 3.8-INCH GUN MATERIEL.

The following vehicles are also used in the 3.8-inch batteries:

The 3.8-inch'gun forge limber, Model of 1902,

The 3.8-inch gun battery wagon, Model of 1902,

The 3.8-inch gun store limber, Model of 1902, and

The store wagon, Model of 1902.

The descriptions of these vehicles will be found in handbook 1659

under the following names:The 3.8-inch gun forge limber, Model of 1902, under the head of

3-inch gun and 3.8-inch howitzer, forge limber, Model of 1902.

The 3.8-inch gun battery wagon, Model of 1902, under the head of

3-inch gun battery wagon, Model of 1902.

34

The 3.8-inch gun store limber, model of 1902, under the head of

3-inch gun and 3.8-inch howitzer store limber, model of 1902.

The store wagon, model of 1902, will be found under the sameheading in the handbook.On all four vehicles, however, the wheels are 58 inches in diameter

instead of 56 inches, as given for the 3-inch gun materiel. As thehubs and wheel fastenings on the 58-inch wheels are of another type,the. axles are necessarily different. In all other respects these vehicles

conform to the descriptions mentioned above.

REPAIRS FOR FIELD ARTILLERY MATERIEL ISSUED TO THE UNITEDSTATES ARMY AND THE NATIONAL GUARD.

The following is an addition to the instructions found in Form No.1659:

A small amount of oil should be put in each wheel before using, as

this is the only way to insure that the wheels are properly lubricated

unless they are removed.

After any test that requires retracting the gun, the recoil cylindershould be refilled, since in this position the three holes in the pistonrod which permit oil to flow from the interior to the rod into the

cylinder when filling are in front of the piston-rod gland, thus per-

mitting some oil to escape.

METHOD OF LOADING ONE 3.8-INCH GUN BATTERY ON WAR FOOTINGFOR TRANSPORTATION BY RAIL.

The flat cars usually obtained from railroad companies vary in

length from 34 to 44 feet. Cars longer than 42 feet are unusual. It

is desirable that cars 40 feet in length be obtained if possible.

In loading a battery on cars during service operations gun sections

should be kept together when possible. Pursuing this idea, a 3.8-inch

gun battery may be loaded as follows when cars at least 34 feet in

length are obtained:

35

The fifth and sixth cars will be only about three-fourths filled if

34-foot cars are procured. The additional space may be utilized as

the battery commander sees fit.

If cars 'ess than 34 feet long are obtained one limber and one

caisson will have to be omitted. If cars 44 feet long are obtained

one additional limber or caisson can be loaded on each.

In loading the cars, if there are permanent loading platforms alongthe railroad tracks in the vicinity, the vehicles should be run onto

these platforms and loaded from them. If there is no permanent

platform in the vicinity it will be necessary to build a temporary

ramp. This shoidd be built at the side of the track and the vehicles

run on near one end of the car. When loading short cars it may be

necessary to remove the pole of the limber last loaded in order to

get the limber onto the car. The pole should be replaced in its

socket, however, as soon as the vehicle is placed in position.

When loading the cars care must be taken to so load them that

there can be no movement of the vehicles on the cars longitudinally,

transversely, or vertically. All vehicles, trails of carriages, poles of

limbers, and lunettes of caissons and wagons must be secured to the

floor of the car. The vehicles are secured as follows:

Two by four inch timbers nailed to the floor of the car on both sides

of all wheels hold the wheels securely against transverse motion.

Two by four inch chocks, nailed to the 2 by 4 inch pieces which lie

along the sides of the wheels, hold the wheels against longitudinalmotion. For the end vehicles of each section of three vehicles four

4 by 4 inch chocks should be used.

A 2 by 4 inch crosspiece placed on the felloes between the two

lowest spokes of both wheels of each vehicle and bolted to the floor

of the car with two one-half-inch bolts holds the wheels against ver-

tical motion. These bolts should, if possible, be bolted through the

crosspieces on the outside of the wheels. If bolts for holding these

crosspieces can not be obtained they should be securely nailed downwith 7 or 8 inch spikes. Each pole and lunette should be secured

to the floor by nailing two 2 by 4 inch blocks to the floor, one on each

side, and one 2 by 4 inch piece across the top, near the end of each

pole and lunette.

The trails should be secured to the floor by using four 2 by 4 inch

blocks, nailing one close up in the rear, one longitudinally along each

side, and one across their top in the rear of the trail. Four 2 by 6

inch timbers brace the wheel hubs of the two end vehicles on each

car. The hub ends should be hollowed out, the lower ends being

spread well apart, forming lateral as well as longitudinal braces and

nailed to the floor of the car and to four cleats which are nailed to the

floor of the car.

For carrying all harness and all accessories of the vehicles which

are not carried in compartments of these vehicles or rigidly attached

36

to them one box car should be obtained. The materiel in this boxcar should be packed in boxes if on hand. In case no box car canbe obtained ill of the harness, etc., should be packed in boxes and

placed on the flat cars near the vehicles. These boxes must be

securely fastened to the floor of the car to prevent them from slidingoff the car or from striking and injuring the vehicles.

To load a 3.8-inch gun battery on war footing will require 1,150linear feet of 2 by 4 inch lumber, 200 linear feet of 2 by 6 inch lumber,and 50 linear feet of 4 by 4 inch lumber.

EQUIPMENT.

The following table shows the total equipment of one 3.8-inch gunbattery on war footing. A place is designated for most of the

articles, but the battery commander may use his discretion as to

the disposition of many articles for which no particular fitting or

receptacle is provided.

Statement of total equipment of one 3.8-inch gun battery.

Warfooting(4 guns,12 cais-

sons).

Article.

Guns and gun carriages.Caissons................LimbersBattery wagonForge limberStore wagonStore limberReel,2-horse

Where carried.

Toolsand accessoriesforgunsand carriages.

* vxle seat cushionsBreech covers

Front-sight coversHand-fuze setters

Hand-fuze setter cases

LanyardsLeather pouches for spare partsMuzzle coversOil-can boxes, horizontal oilers

Oilers, horizontal

Rear-sight bracket covers

Rear-sight shank covers

Spanner and wrench I

Sponge covers ;

Sponges and rammersSpools copper wire No. 20 (3 pounds each)Tool kits, canvas, each containing

1 cold chisel f by 8 inches1 drift, bronze, large1 drift, bronze, small1 file, dead smooth, 6 inches, 3 inches

square.1 file, hand, smooth, 8 inches, flat

1 hammer, hand, cross-peen1 pliers, wire cutting, 8-inch1 punch, small1 screw driver, 10 inches1 scre\v-slot wrench1 wrench, filling and drain plugs1 wrench, range quadrant

Wrenches, ? and 1 inchWrenches for assembling recoil springsand grindstone.

On axle seat

On gunOn front sightIn casesIn trail box...do...

Propertyclassifica-

tion.

IV

IV

....doOn gunIn trail boxIn oil can boxesOn bracket on cradleOn sight in trail sight box.In trail boxOn spongeIn fastenings on trail

In trail box..,

.do

.do.

.do.

IV

37

Statement of total equipment of one 3.8-inch gun battery Continued.


sons).

38



sons).

Article. Where carried.

Propertyclassifica-

tion.

ClassSec-tbn.

1

1

1

1

1

1

21

24

24

1

1

1

1

1

2240

Spare parts for guns and gun carriagesContinued.

For carriage Continued.Firing-shaft trip-latch pin ...............Firing-shaft trip-latch plunger...........Firing-shaft trip-latch spring ............

Firing-shaft trip-collar pin ..............

Filling and drain plug (cylinder) ........

Filling plug (piston rod) ................Front sight, complete, with bracket .....

Oarlock's waterproof packing, J rings____Lunette with nut .......................Panoramic sight ....................... .

Handspike web ................ ........ .

Handspike body with rivets and steelwashers.

Handspike lower bands with rivets......

Handspike middle bands with rivets ____

Handspike tips with rivets..............

Handspike bolts with nuts ..............

Handspike rivets .......................

Spade edge .............................

Sponge cover............................

Spade-edge rivets .......................

Spring cover No. 1 with screw andwasher.

Carpet with lacing where required.......Rammer with rivets where required .....

Staff coupling, male.....................Staff coupling, female ...................

Staff, end ...............................

Staff, head ................ .-.............Tube collars ................ ............

Sponge tube ............................

Sponge retaining ring with taper pin.....Hub liner ...............................Lock washer ............................Wheel fastenings, complete ..............Wheel-fastening hasps ..................Hub cap ................................Oil val * e, complete, consisting of valve,spring, washer, and split pin.

Range quadrant ........................Rear-sight bracket ......................Rear sight shankRecoil indicators

Split pins, assorted

Nuts, crocrown, special, set, consisting of0.875 by 20 threads ..................1.25 by 7 threads ....................1.187 (1A) by 16 threads.............

Nuts, crown, standard, set, consisting of

0.375 by 16 threads ..................

Nuts, hexagon, special, set,- consistingof

0.5 by 13 threads ....................0.625 by 11 threads ..................0.75 by 10 threads ...................1.375 by 10 threads..................

Nuts, hexagon, standard, set, consistingof

0.5 by 13 threads ....................0.625 by 1 1 threads ..................

Tools and accessories for limbers.

AxesBuckets, water, canvas.Dust guards, leather . . .

HatchetsLanternsLantern bracket pads . .

Neck yokesOil cans, tubularPaulins, 12 by 12 feet...

PickaxesPicket ropes

[In chest for miscellaneous spare parts

>In leather pouch for spare parts

In trail sight boxIn leather pouch for spare partsIn store wagonIn box on shield . .

In store wagon ,

In chest for miscellaneous spare parts.

In box on shield .

On cradleIn trail sight box.

Carried equally in leather pouches for

spare parts.

On limber, under chestOn limberOn wheelsOn limber, in bracket, on left of chest. .

On limber, in holder, front of chestIn bracketsOn poleOn limber, in ammunition chestOn limber, on seat as cushionOn limber, on foot rest

On limber, on front of chest

IV

IV

39



sons).

40



6300

61212

Article.

Spare parts for caissons Continued.

LunettesLunette nuts

Padlocks, chains, clevises, and bolt

snaps.Pintles, complete, with bearings andbearing bolts.

Pintle latchesPintle-latch springsPintle springsSplit pinsWheels, complete -

Wheel fastenings, completeFastening hasps

Tools and accessories for battery wagon.

Carpenter's chest, with to9ls, set

Chest for cleaning material and smallstores.

Chest for spare breech mechanismChest for spare sights, containing

1 bore sight, breech1 bore sight, muzzle

Double tackle block

Forge coal bagFilling funnel, cylinderGrindstone, with frame, completeJackscrewMarking outfit for stamping leather

Marking outfit for stamping metalOil cans, 5-gallonOrdnance Department insignia stencil..

Packing chest for suppMesPacking chest for spare partsPaulin, 12 by 12 feet

Rope for block and tackle

Saddler's chest, with tools, set

Seal stampTriple tackle block

Spare wheel hub covers

Spring compressors, No. 3

Stencil outfit

Straps:GripJacksccewPaulin

Testing level and chestVise..Water buckets, galvanized steel

Wrench, grindstone and recoil-springassembling.

Tools and accessories for store wagon.

BolosBolo scabbardsChest for miscellaneous spare parts.CrowbarDust guardsKilling funnel, cylinderOil caas, 5-gallonPaulin, 12 by 12 feet

Slush brush

Straps:CrowbarGripPaulin

Spare wheel hub covers

Tools and accessories for forge limber.

AxBuckets, watering, canvas .

Dust guardsHatchet...

Where carried.

In store wagon .

Pouches for spare parts .

Where convenientIn store wagon....do

Propertyclassifica-

tion.

Class.

IV

In battery wagon .

....do

.do.

.do.

....doOn battery wagon .

In battery wagon .

.do.

.do.

\In cleaning material and small stores

/ chest.In oil-can supportsIn cleaning-material chestIn battery wagon

.do.On battery wagon .

In battery wagon .

.do.In cleaning-material chest.In battery wagonOn spare wheelsIn battery wagonIn cleaning-material chest.

[in strap fasteners

In battery wagonAttached to lunette frame.In battery wagon

...do

IV

IV

IVIV

IV

IVXIV

IV

XXIVIVXX

IV

IVXIVIV

In store wagon 1VIIdo

....doOn store wagon, under bodyOn wheels IJ- IVIn store wagonOn store wagon, in oil-can holdersOn store wagon

. . .do

In strap fasteners .

In store wagon . . .

On limber, under chestOn limber, in bucket holder.On wheelsIn bracket on left of chest . . .

IV

IV

IVIV

Statement of total equipment of one S.8-inch gun battery Continued.

Warfooting(4 guns,^cais-sons).

42



sons).

Statement of total equipment of one S.S-4nch gun battery Continued.


sons).

Article.

Spare parts of harness.

Breast strapsBridle, Artillery, off ,

Bridle, Artillery, near

Cinchas, lead ,

Cinchas, wheel ,

Collar pads, canvasCollar strapsCurb bitsCurb chain, with hooksFeed bagsGrain bagsHalter headstallsHalter tie ropesMartingales, with cincha strapsMogul springs, 320 poundsSide straps for breechingSteel collars, with 2 hame tugs eachStirrup strapsTraces, lead, with chainTraces, wheelWhips, Artillery

Spare parts of collars.

Bolts for bottom of collarBolts for extensionBolts for top connectionBolts for trace plateBuckle latchesBuckle springsDraft springsPad boltsPad hooks, with collar back-strap con-nection.

Nuts for bottom boltNuts for extension boltNuts for top connection boltNuts for pad boltNuts for trace-plate boltTrace plate and loopWashers for trace-plate bolt

Instruction equipment.

Sectionalized shellSectionalized shrapnel

Miscellaneous equipment.

Reloading and cleaning outfit, consist-of

bushingcleaning brush (16.75 inches lo'ng)".case holdercase-holder standdecapping tool (17.9 inches long) .

hammerprimer-inserting press, small

1 saluting-powder measure1 storage chest

Subcaliber and drill cartridge kit, con-sisting of

3 drill cartridges, 1 extra base1 subcaliber cartridge1 bristle cleaning brush1 cleaning rod2 closing cap set screws1 extension piece2 extractor springs2 extractor-spring screws1 eyepiece1 graduated ring, with felt washer. .

4 ring screws6 rotating pins6 stop pins ."."."

1 storage chest1 wrench pin

Where carried.

In battery wagon .

Not part of harness...dodo...

In battery wagon .

Propertyclassifica-

tion.

Class

IV

IX

IV

In miscellaneous spare-parts chest,store wagon.

Carried looseIn miscellaneous spare-parts chestCarried loose . . .

In miscellaneous spare-parts chest

Notjcarried in field.

In chest for reloading and cleaningoutfit, in store wagon.

Not carried in field.

IV

Sec-tion.

44

Statement of total equipment of one S.8-inch gun battery Continued.


sons).

45


Warfooting(4 guns,^cais-sons).

46



sons).

Article. Where carried.

Propertyclassifica-

tion.

Sec-tion.

Carpenter's tools Continued.

Handles, file, aluminum alloyi Knife, drawing, 9-inch blade

\

Mallet, 2| by 5 inches, maple, hickoryhandled.

Nail setOiler

Oilstone, unmountedPincer, small, 8-inch

Plane, jack, woodPlane, smoothing, woodPlate, auger handleRasp, wood, 10-inch

Reamer, half round, for wood or soft

metal.

Rule, boxwood, 2-foot, 4-fold

Saw, crosscut, 24-inch

Saw, rip, 24-inch ,

!n carpenter's chest, in battery wagon. .

Screw driver, 5-inch blade, 10-inch

Spokeshave, adjustableSquare, steel, 12-inch body, 8-inch

tongue.Tape line, linen

Vise, table, 2i-mchWrench, screw, 12-inch

Blacksmith's tools.

Anvil, 100-poundAprons, blacksmithBags, canvas, for nails

Box, shoeing, leather

Chisel, cold, 8-inch

Chisel, handled, for cold iron, 2 pounds . . .

Chisel, handled, for hot iron, 1.5 pounds . .

Clinching ironDrills, flat

File, 12-inch, flat, bastardFire rakeFire shovel

Flatter, handled, 1 .5 inch, square face

Fore punch and creaser

Forge, Empire, portableHammer, hand, 2 poundsHammer, riveting, 1 pound, 2 ouncesHammer, shoeing, 10 ounces

Handle, file, aluminumHardie, 0.75 square shank, 1.25 bit

Cutting nippers, 14-inchOiler

Pritchel, 0.75 flats, 9-inch

Punch, round, 0.375-inch

Punch, round, 0.312 (A)-inchPunch, nail

Punch, squareRatchet drill for square shank drill

Rivet sets, 5 sizes

Rule, boxwood, 2-foot, 4-fold

Screw plates, taps and dies, with tapwrench, including chest.

Shoeing knivesShoeing pincers

In forge limber chest .

1 Shoeing rasp, 16-inch.

Sledge, 11-poundSquareToe knife

Tongs, horseshoer's, 1.5-pound, 12-inch..

Tongs, for 0.25 iron

Tongs, for 0.5 iron

Whetstone, farrier's, 10-inch

Wrench, forge

Wrench, screw, 12-inch

47


Lightbat-

tery.-

7.r,

Article.

Materialsfor cleaning and preservation.

(6 months' supply, all expendable.)

Borax, pounds, lumpBrush, camel's hair, No. 1, roundBrushes, sash, No. 3

Brushes, sash, No. 5

Brush, varnish, No. 4-0

Brushes, varnish, No. 5-0

Brushes, varnish, No. 6-0

Burners, lantern, Dietz, VestaCloth, crocus quires. .

Cloth, emery, No. quire..Cloth, emery, No. doCloth, emery, No. 00 doCosmic, No! 80, soft, quarts (1-quartcans).

Chamois skins

Dressing, russet leather boxes. .

Eveready tungsten battery No. 793

Eveready 2.7V. Mazda bulb No. 1197. .

Globes, lanternLavaline, 16-ounce cansLye, powdered, cans, 1-pound

Where carried.

In store wagon....do....do....do....do....do....do....do....do

do..do..do :

..do...

Propertyclassifica-

tion.

Class.

.do.

.do.

.do.

.do.

.do.

.do.

Naphthaline pounds. .

Oil, clock, ounce, 1-ounce bottles

Oil, hydroline, gallons, 5-gallon cans. .

Oil, linseed, boiled gallons. .

Oil, linseed, raw pints. .

Oil, lubricating gallons . .

Oil. neat's-foot

Oil, slushing, light.

.do.

.do.

Oil, coal do.

Oil, sperm do.

Paint, olive-drab, second coat.pounds .

Paint, olive-drab, third coat.... do.Paint, rubberine, gallons, 1-galloncans.

Petrolatum (vaseline), ounces (in tinbox).

Po'ish, Gibson's soap, 16-ounce cans. .

Primer, brown enamel quarts. .

Sal soda, pounds, bulk :

5 pounds in store wagon; rest to beretained at post.

Not carried in field

In cleaning material and .small-

stores chest.In oil cans under battery and store

wagons.In store wagonIn cleaning material and small-

stores chest.In oil cans on battery and store

wagons.4 gallons in store wagon; rest to beretained at post.

2 gallons in store wagon; rest to beretained at post.

In oil cans under battery and store

wagons.1 gallon in store wagon; rest to beretained at post.

5 pounds in store wagon; rest to beretained at post..do

Not carried in field.

In cleaning material and small-stores chest.

In store wagonIn store at post20 pounds in cleaning-material

chest.

Sandpaper, No. 1\ quires. . I In cleaning material and small-stores chest.

Sandpaper, No. 1J doSandpaper, No. \ doSandpaper, No. 00 doSoap, castile pounds. .

Soap, H & H, cakes or"Paco"...Soap, saddle, Frank Miller's, pounds,1-pound tins.

Sponges, 5-inch

Sponges, large size, 5^ or 6 inch

Turpentine gallons. .

Waste, cotton, pounds, white

.do.dodo

In store wagon .

do...do...

Wicks, lantern, size

Tape, black adhesive, f-inch wide,*-pound roll.

1 Only one of these items will be issued to an organization.

35 in store wagon; rest to be re-

tained at post.In store wagonIn store at post10 pounds in store wagon; rest to beretained at post.

In cleaning-material chestIn store wagon ,-.

Sec-tion.

10

48


Horsebat-

tery.

49


Horsebat-

ti-ry.

50


No.

3510333325121021

1

4

31

2223322301

31

44121621

32

8433

1

182312

40360252

1

1

1

25

2

INDEX.

A.Page.

Accessories (for battery wagon), list of 40Accessories (for caisson), list of '.V 39Accessories (for forge limber), list of - 40Accessories (for gun and carriage), list of 36Accessories (for limber), list of '. 38Accessories (for store limber), list of 41Accessories (for store wagon), list of .% 40Allowance of supplies 47

Ammunition, allowance of 13

Ammunition, blank 14

Charge for 14

Preparation 14

Ammunition, fixed 12

Ammunition, list of 44Ammunition carriers .- 25

Apron (for carriage), description 25

B.

Battery wagon, model of 1902 33Blacksmith's tools, list of 46Brake rod spring cover 25Brake segment rack 25Breech mechanism 9

C.

Caisson 30

Caisson, nomenclature 30

Caisson, weights, dimensions, etc 30

Carpenter's tools, list of 45

Carriage 17

Carriage, nomenclature 17( 'arriage, weights, dimensions, etc . .'. 17

Cartridge case, description 12

Chest body (for limber) 29Chest body (for caisson) 33Chest front (limber) 29Chest front (caisson) 33Chest front tees 33

Collars, spare parts for, list of. 43Cradle 24

Cylinder, to fill 25

D.

Diaphragm (for caisson) 33

Diaphragm brace 33Door tees (limber) 29Door tees (caisson) 33Drill cartridge 14

(51)

52

E.

Page.

Elevating gear 24

Equipment, list of 36

Equipment, horse, list of -. 44

Equipment, instruction, list of 43

Equipment, miscellaneous, list of 43

Equipment, personal, list of 44

Equipment, range finding and fire control, list of 42

Equipment for one 3.8-inch battery, statement of total 36

Equipment, target, list of 44

F.

Forge limber 33

Fuzes, F. A., combination 13Parts of 13Action of 13

Fuze setter, hand, model of 1913, description 14

Operation 15Fuze setter, hand, old model, description

Adjustment 16

Adaptability to other guns 16

Fuze setter (caisson)v. 33

G.

Gun, model of 1907 9

H.

Harness, list of 42

Harness, spare, list of 43

Hatchet blade bracket 30Hood 25

Hubcap... 25

L.

Limber 26

Limber, nomenclatureLimber, weights, dimensions, etc 26

Lock barLock washer 25

M.

Main shield 25

Material, cleaning and preservation, allowances of for six monthsMaterial, saddler's, allowance of for six months 48

N.

National Guard, repairs for 34

O.

Oils for Artillery materiel 34

Oil can holder (limber) 30

P.

Plates, list of 6

Primer, 110 grain percussionProjectiles

Propelling charge

R.

Range table for 3.8 inch gunRepairs for Field Artillery materiel

Rocker.. 24

s.

Pago.

Saddler's tools, list of 45

Shell, common steel 12Shield 25Shield brace 25

Shrapnel, common 13

Sights, list of 41

Spare parts (for caisson), list of 39

Spare parts (for carriage), list of 37

Spare parts (for gun), list of 37

Spare parts (for limber), list of 39

Spare parts, miscellaneous, list of 43

Spare parts of accessories, list of 41

Spare sights, list of 42Store limber 33Store wagon 33

Supplies kept in reserve, list of 50

T.

Tools (for battery wagon) ,list of 40

Tools (for caisson), list of 39Tools (for forge limber), list of 40Tools (for gun and carriage), list of 36Tools (for limber), list of 38Tools (for store limber), list of 41Tools (for store wagon), list of 40

Transportation by rail, method of loading a battery 34

Traversing mechanism, description 24

Traversing mechanism, to dismount 25

Traversing clip 24

Traversing plate 24

Traversing worm shaft 25

W.Wheels 24

Wheel, to remove 25Wheel fastening 24Wheel fastening, to remove 26Wheeled materiel, list of 36

WAR DEPARTMENT,OFFICE OF THE CHIEF OF ORDNANCE,

Washington, January 29, 1917.

Form No. 1773.

EJ. Jan. 19-17-300.

UNIVERSITY OF CALIFORNIA LIBRARYBERKELEY

THIS BOOK IS DUE ON THE LAST DATESTAMPED BELOW

Books not returned on time are subject to a fine of50c per volume after the third day overdue, increasingto $1.00 per volume after the sixth day. Books not indemand may be renewed if application is made beforeexpiration of loan period.

'JAN 16 1918

50m-7,'16

UNIVERSITY OF CALIFORNIA LIBRARY

f uc-nrlf handbook of the...guncaisson,modelof1902,inhandbook1659beingused. the followingparagraphs...

Documents