Annual Report of the Secretary of WarU.S. Government Printing Office, 1896 |
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Página 361
... coppers of 1892 . Same case . Weight of case after firing , 28 pounds 14 ounces . 18,000 coppers of 1892 . New case filled with zinc to 91 inches from rear end . Weight of case before firing , 25 pounds 12 ounces . Block opened with ...
... coppers of 1892 . Same case . Weight of case after firing , 28 pounds 14 ounces . 18,000 coppers of 1892 . New case filled with zinc to 91 inches from rear end . Weight of case before firing , 25 pounds 12 ounces . Block opened with ...
Página 367
... coppers of 1892 . Uncompressed coppers of 1890 . Coppers jammed . 14,000 coppers of 1892 .. 24,000 coppers of 1890 .. 18,000 coppers of 1892 . 18,000 coppers of 1892 . 18,000 coppers of 1892 . Gun mounted on Buffington steel field ...
... coppers of 1892 . Uncompressed coppers of 1890 . Coppers jammed . 14,000 coppers of 1892 .. 24,000 coppers of 1890 .. 18,000 coppers of 1892 . 18,000 coppers of 1892 . 18,000 coppers of 1892 . Gun mounted on Buffington steel field ...
Página 369
... coppers of 1892 . 14,000 coppers of 1892 . 14,000 coppers of 1892 . 18,000 coppers of 1892 . 18,000 coppers of 1892 .. 18,000 coppers of 1892 ... In rounds 195 to 201 the steel filling plug was increased in length 1 inch by a steel disk ...
... coppers of 1892 . 14,000 coppers of 1892 . 14,000 coppers of 1892 . 18,000 coppers of 1892 . 18,000 coppers of 1892 .. 18,000 coppers of 1892 ... In rounds 195 to 201 the steel filling plug was increased in length 1 inch by a steel disk ...
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12-inch B. L. mortar 12-inch B. L. rifle action of breech Appendix B. L. mortar steel barometer block bolt breech mechanism breechblock caliber cartridge cent center of impact consumption of powder coppers of 1892 degrees elevation deviation from center disappearing carriage effect on piece Eleva feet Firing conducted firing pin forgings Frankford Arsenal front fuse gauge grains gun cotton Hook Proving Ground humidity igniter inch long inch of bore June June 15 manufacture miles an hour muzzle nitroglycerin Object of firing Ordnance Department piston plate platform Pont's brown prismatic Pressure primer projectile in flight rear recoil Record of firing rounds sand Sandy Hook Proving scattering of fragments screw shaft Shell shot sight smokeless powder sound of projectile Special remarks spring SPRINGFIELD ARMORY square inch target thermometer tion top carriage trunnion velocity Watertown Arsenal Watervliet Arsenal Weight wheel WILLIAM CROZIER yards