| Weight of gun and carriage complete | 2,520 lbs. |
| Width of track | 60 inches |
| Length of recoil on carriage | 45 inches |
| Amount of traverse of gun on carriage | 140 mils |
Nomenclature of important parts of the Gun Carriage:—
- Axle
- Trail, consisting of—
- Flasks (right and left)
- Tool box
- Elevating gear transom
- Rear sight box
- Spade
- Spade Edge
- Float
- Handspike fulcrum
- Cradle, head, rear
- Gun slides or Guide Rails
- Cradle Pintle
- Traversing lug
- Rear clip
- Lug for elevating and traversing lock
- Bracket seat, firing handle
- Quadrant fastening
- Rear-sight bracket support
- Front-sight bracket support
- Spring-support guides
- Retaining ring, with hasp and fastening
- Cradle head, front
- Shoulder guard
- Cradle brush
- Recoil-indicator throw
- Recoil indicator
- Cylinder head
- Cylinder with cylinder end screwed in
- Cylinder end stud and nut
- Counter-recoil buffer
- Rings, packing
- Gland
- Piston rod, with plug, screwed in
- Piston
- Piston-rod nut
- Filling plug with gasket
- Drain plug
- Spring support
- Counter-recoil springs
- Rocker
- Cradle Pintle socket
- Elevating and traversing lock
- Traversing mechanism, consisting of—
- Traversing-gear case
- Traversing plate
- Handwheel with handle and spindle
- Traversing shaft
- Traversing-shaft bearing in two parts
- Traversing link with bushing
- Traversing-link pivot with nut
- Azimuth pointer and scale
- Elevating mechanism, consisting of—
- Elevating pin
- Inner elevating screw
- Outer elevating screw
- Wheels guards
- Trail handles
- Trail seats
- Trail-seat supports
- Sponge-staff socket
- Name plate
- Handspike
- Lunette
- Cradle, consisting of—
- Cradle body
- Elevating bevel gear
- Elevating bevel pinions
- Elevating crank shafts, with handles
- Elevating screw cover
- Axle seats, include—
- Seat arms
- Seat-arm guards
- Foot rests
- Tie rods
- Shield braces
- Apron shield
- Apron latches
- Main shield, consisting of—
- Main shield
- Hood
- Shutter, open-sight port
- Shutter, panoramic-sight port
- Top shield, consisting of—
- Top shield
- Top shield fastenings
- Road brake, includes—
- Brake beams
- Brake shoes
- Springs with covers
- Brake rods
- Brake lever
- Brake shaft
- Brake segment with two segment racks
- Ammunition carriers
- Range quadrant case
- Panoramic sight case
- Front sight
- Rear sight, consisting of—
- Rear-sight bracket with shank socket
- Rear-sight shank
- Panoramic sight
- Range quadrant
- Wheels, consisting of—
- Felloe, segments
- Spokes
- Tires
- Hub boxes
- Hub liners
- Hub-latch plungers
- Oil Valve
- Carriage bolts and nuts
- Hub bands
- Hub caps
- Wheel fastenings
- Plugs
THE 3-INCH GUN (CAISSON) LIMBER.
The limber is of metal throughout excepting the spokes and felloes of the wheels. The principal parts are the wheels, axle, pintle, frame, ammunition chest, pole, doubletree, singletrees, and neck yoke.
The wheels and wheel fastenings are the same as, and interchangeable with those used on the carriage. Seats for three cannoneers are provided by a perforated metal bucket-holder on top of the chest. The paulin issued to each limber serves as a seat cushion and is held in place by paulin straps. Grip straps are also provided for use by the cannoneers when the carriage is moving at rapid gaits. On the sides and front of, and under the ammunition chest, suitable straps, brackets and connections are provided for securing all tools and accessories. With each limber are issued three tubular oil cans, each in the form of a cartridge and with a capacity of two-thirds of a gallon. These are intended to hold hydroline, lubricating and coal oil and are carried in the central row of cartridge holes in the ammunition chest.
3 INCH GUN CAISSON LIMBER, MODEL OF 1916
SIDE AND REAR VIEWS.
Weights and Dimensions.
| Weight of limber, completely equipped and loaded | 1740 lbs. |
| Weight of gun, carriage and limber, completely equipped and loaded | 4260 lbs. |
| Number of rounds carried | 36 |