Annual Report of the Secretary of WarU.S. Government Printing Office, 1896 |
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Página 359
... Weight of case with filling before firing , 20 pounds 7 ounces . Missed fire 4 times . Case recapped . Block opened stiffly after firing . Weight of case after firing , 20 pounds 6 ounces . 18,000 cop- pers of 1892 . New case filled ...
... Weight of case with filling before firing , 20 pounds 7 ounces . Missed fire 4 times . Case recapped . Block opened stiffly after firing . Weight of case after firing , 20 pounds 6 ounces . 18,000 cop- pers of 1892 . New case filled ...
Página 434
... Weight . Number of prisms . Kind . Weight . Travel of shot in bore . Eleva- tion . Instru- mental velocity . Lbs . Oz . 30 100 0 Brown ... 1 , 081 Black .... 7 Nov. 9 31 100 0 Nov. 9 32 100 0 Nov. 9 33 100 0 S 37 38 35 Du Pont's brown ...
... Weight . Number of prisms . Kind . Weight . Travel of shot in bore . Eleva- tion . Instru- mental velocity . Lbs . Oz . 30 100 0 Brown ... 1 , 081 Black .... 7 Nov. 9 31 100 0 Nov. 9 32 100 0 Nov. 9 33 100 0 S 37 38 35 Du Pont's brown ...
Página 438
... Weight . Number of prisms . Kind . Weight . Travel of shot in bore . Eleva- tion . Instru- mental velocity . Lbs . Oz . 80 0 Brown .. 864 Black .... 7 15 95 0 Brown ... 1 , 026 Black .... 7 Mortar shell , lot 332 . Lbs . Oz . Inches . о ...
... Weight . Number of prisms . Kind . Weight . Travel of shot in bore . Eleva- tion . Instru- mental velocity . Lbs . Oz . 80 0 Brown .. 864 Black .... 7 15 95 0 Brown ... 1 , 026 Black .... 7 Mortar shell , lot 332 . Lbs . Oz . Inches . о ...
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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