75 mm Gun M1916

75 mm Gun M1916
Type Field gun
Place of origin United States
Service history
In service 1916-1942
Used by United States
Wars World War I
Production history
Designed 1916
Manufacturer various
Produced 1916-ca. 1920
Number built 810 guns, 362 field carriages, 51 AA mountings, ca. 150 coast defense and other mountings
Specifications
Weight 3,045 lb (1,381 kg) gun and carriage
Length 7.58 ft (2.31 m)
Barrel length 90.9 inches (231 cm) (28.4 calibers)
Width 5 ft track
Diameter 4ft 8in wheel
Shell fixed, shell weight 11.85 lb (5.38 kg)
Caliber 75 mm (3.0 in)
Breech drop block
Recoil Hydrospring
Carriage split trail
Elevation 53° (31° to 82° on AA mounting)
Traverse 800 Mills (240° on AA mounting)
Muzzle velocity 1,742 ft/s (531 m/s)
Effective firing range 9,733 yd (8,900 m)
Maximum firing range
  • 12,490 yd (11,420 m)
  • 5,500 yd (5,000 m) AA altitude
Feed system hand

The 75 mm Gun M1916 was a US Army field artillery piece used during and after World War I. It was used as an anti-aircraft gun as well as a field piece. It originated as the 3-inch Gun M1913, which was soon modified to the 3-inch Gun M1916, which was later altered to the subject weapon.[1]

History

This weapon originated with the acquisition in 1912 of a 75 mm gun designed by Col. Deport of the French Army. The US Army wished to examine and adopt a split-trail carriage, which would allow a higher elevation for indirect fire and dropping shells into trenches.[1] This carriage type was used on the prototype 3-inch model of 1913, which was later designated the 3-inch Gun M1916 after a major carriage redesign, prompted by field trials of the M1913. By early 1917 only 34 weapons had been completed; one source traces this to the Ordnance Department developing the weapon without input from the Field Artillery, compounded by a complex top carriage intended to allow 45 degrees of traverse.[2] Shortly after the American entry into World War I, the US Army decided to adopt French and British weapons, and modify their own weapons where possible to accept French or British ammunition. The M1916 was modified to a 75 mm bore, including alteration of existing weapons, permitting interchangeability of ammunition with French guns as the 75 mm Gun M1916.[1]

The gun's hydrospring recoil system consisted of an oil cylinder on top of the barrel and two spring cylinders underneath. It did not work at high elevation angles,[2] and by early 1918 production of the US version of the French Canon de 75 modèle 1897 was emphasized.[1] By the end of 1918, shortly after the war ended, only 251 weapons had been completed; 34 had been shipped to France but did not see action. A combination of a limited pre-war munitions industry, the short (19-month) US participation in the war, technical problems with large-scale production, and the ready availability of munitions in France led to this.

In an attempt to resolve the recoil system problems, hydro-pneumatic recoil cylinders (using compressed air instead of springs) were designed by a French officer who had previously done this for Schneider-Creusot.[2] In the US these were called the "St. Chamond" recuperator (touching off a flap in France over the US "stealing" military secrets),[2] but only 60 of these were delivered by the end of 1919. Field trials in France showed that there was excessive play in the elevation and traverse mechanisms, making the gun very inaccurate, along with poor durability in cross-country movement.[2] However, production continued postwar; eventually 810 barrels and 362 field carriages were delivered. The surplus of barrels led to the weapon's use for other purposes.[1]

Carriage orders were 300 in 1916, 340 in May 1917, and 400 to New York Air Brake in June 1917, totaling 1,040, with only 362 completed.[2]

Antiaircraft use

51 of these weapons were mounted on 2.5-ton White trucks for anti-aircraft (AA) use, designated the AA truck mount M1917. Some of these weapons reached France before the Armistice, the only US-made AA weapons to do so, but none saw action. Prior to the commencement of this program, 50 AA truck mounts were shipped to France without guns as a stopgap, where French 75s were mounted on them. The maximum AA altitude was 5,500 yd (5,000 m) at 82° elevation, limited by a 20-second fuse. The low muzzle velocity and limited elevation and traverse of the AA mounting (31° to 82° elevation, 240° traverse) impaired the weapon's effectiveness. By 1940 the AA version of the weapon was no longer in active service, but a few were retained for training.[3]

Post-WWI use

The Coast Artillery Corps deployed about 24 of these weapons on fixed pedestal mounts for land defense in the Panama Canal Zone in 1926, replacing the 4.7 inch howitzer M1913 in this role.[1][4][5] An additional 100 barrels were acquired by the Coast Artillery for use in sub-caliber training alongside large guns.[1]

Used mostly for training purposes after World War I, the field artillery version of the gun remained in Army inventory as late as 1942.

Variants

US 75mm Gun M1916 AA on White 2.5-ton Truck Mount
US 75mm Gun M1916 on self-propelled carriage
US 75mm Gun M1916 on Mark VII SP Caterpillar Mount

Support vehicles

In World War I, a battery of 75-mm guns was accompanied by the following:

Surviving Artifacts

See also

References

  1. 1 2 3 4 5 6 7 Williford, pp. 80-83
  2. 1 2 3 4 5 6 Hogg, pp. 48-50
  3. ↑ Berhow, Mark A., Ed. (2015). American Seacoast Defenses, A Reference Guide, Third Edition. CDSG Press. p. 249. ISBN 978-0-9748167-3-9.
  4. ↑ Berhow, p. 78
  5. ↑ Handbook of the 4.7 inch Howitzer Materiel M1913 on Pedestal Mount M1915
  6. ↑ Campbell Jr., Capt. Levin H., "A Successful Experiment in Submerging a Gasoline Motor", The Field Artillery Journal, Mar-Apr 1920, Vol. X, No. 2, pp. 139-148
  7. ↑ Capron, Major Webster A., "Ordnance Motor Equipment for Artillery Transport", The Field Artillery Journal, Sep-Oct 1920, Vol. X, No. 5, pp. 458, 464-465

External links

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