Axletrees.—Most of the field carriages are now made with iron axletrees; the dimensions of which are as follows:

Iron
Axletrees.
Dia. of
the arm.
Len. of
arm.
At the
shoulder.
At the
point.
Box, or
nave part.
Washer
part.
Total
length
to
linchpin.
in.in.in.in.inch
6 Pr. Light -2³⁄₄1³⁄₄13⁵⁄₈13⁵⁄₈
3 Pr. Heavy
5¹⁄₂ in. Howitz.
Ammu. caisson
Ball cartridge do. whether horse artillery or the park, whether limber or carriage
Light 12 Pounder and limber3¹⁄₄2¹⁄₄16³⁄₄16³⁄₄
Medium 12 Pr.3¹⁄₂2¹⁄₂16³⁄₄16³⁄₄
Limber to do.2³⁄₄2 13⁵⁄₈13⁵⁄₈
Wood
Axletrees.
Carriage.Limber.
Di. of Arm.Length
of
Nave.
Di. of Arm.Length
of
Nave.
At
Shoulder.
At Point.At
Shoulder.
At Point.
In.In.In.In.In.In.
24 Prs. Heavy7 4.918 6 3.316
12 Prs. Med6 4 16 6 4 12
6 Prs Des’rs.5¹⁄₂3¹⁄₂13¹⁄₂5¹⁄₂3¹⁄₂13¹⁄₂
6 Prs. Light5 3 13 5 3 13
3 Prs. Des’rs.2-1¹⁄₄ 2-1¹⁄₄
3 Prs. Light
How’r. 8 In.6- 17 5- 15
How’r. 5¹⁄₂ in.5- 13 4¹⁄₄ 11-
How’r. 4²⁄₅ in.4- 12 4 10
—— fore ———— hind ——
Ammunition waggon, with folding sides5 2.914 5 2.913
Close bodied Ammunition caisson5 3.314 5 2.914

Dimensions and Weight of Standing Gun Carriages.

Kinds.3224181296
Ft.in.Ft.in.Ft.in.Ft.in.Ft.in.Ft.in.
Axletrees, length49474339¹⁄₂36¹⁄₂34
Side pieces, length64605956 53 50
Whole height to trunnion beds29272623 21 20
Weight of carriage, bed & coins -ct.qr.ct.qr.ct.qr.ct.qr.ct.qr.ct.qr.
90807060 33 23

Carriages on a march. See [Marching].

The carriages for horse artillery guns, as 12, 9, and 4 pounders, are constructed lighter than formerly; the two first of these calibres have an additional trunnion plate; and indeed it does not appear why every travelling carriage should not have this important improvement since it eases the horses and saves the carriage; and by lessening the fatigue increases the celerity of the movements, and spares the cattle for service.

Diameter of the wheels of the Field Carriages at present in use:

Diameter.
ft.in.
All the horse artillery carriages, limbers, and caissons; the heavy 6 Prs. and long 3 Prs. andtheir limbers; the carriage of a 6 Pr. battalion gun, and a light 5¹⁄₂ inch howitzer; the hind wheels of a common ammunition caisson50
Limber to light 6 Pr. and 5¹⁄₂ howitzer - 48
Med. 12 Pr.—limber, 4 ft. 6 in. carriage
Sling cart58
Fore wheels of an ammunition caisson40
Pontoon carriage -Fore30
Hind56
8 Inch Howitzer -Limber40
Carriage50
Ball Ammunition Cart50
24 Prs. Platform Carriage -Fore40
Hind42

For wood of which carriages are made, see the word [Wood].