Annual Report of the Secretary of WarU.S. Government Printing Office, 1896 |
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Página 46
... shots were softer , with less shock from impact with the injured plates . For the deck - piercing shell these objections have been avoided by adopting smaller plates , only 3 feet square , and of firing only one shot at ( the center of ) ...
... shots were softer , with less shock from impact with the injured plates . For the deck - piercing shell these objections have been avoided by adopting smaller plates , only 3 feet square , and of firing only one shot at ( the center of ) ...
Página 47
... shot in order to cover the case of such plates . The projectiles will be required to go through the plate in the ballistic test , and it is a question whether the breaking up of the shot into several large frag- ments should not be ...
... shot in order to cover the case of such plates . The projectiles will be required to go through the plate in the ballistic test , and it is a question whether the breaking up of the shot into several large frag- ments should not be ...
Página 418
... shot From first to second shot Time . Time lost by im- perfect action of breech mechan- ism . Minutes . Seconds . Minutes . Seconds . From second to third shot From third to fourth shot From fourth to fifth shot From fifth to sixth shot ...
... shot From first to second shot Time . Time lost by im- perfect action of breech mechan- ism . Minutes . Seconds . Minutes . Seconds . From second to third shot From third to fourth shot From fourth to fifth shot From fifth to sixth shot ...
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Palavras e frases frequentes
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