Annual Report of the Secretary of War

الغلاف الأمامي
U.S. Government Printing Office, 1895

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الصفحة 266 - The lower ends of the levers move vertically upward, being constrained by the crosshead traveling on the vertical crosshead guides. The trunnions of the gun move downward and to the rear in the arc of an ellipse. The energy of recoil is absorbed partly by raising the counterweight and partly by the...
الصفحة 334 - This is due to the fact that the center of gravity of the trigger is far in advance of its seat, and that the chamber in which it is contained is large enough to permit of sufficient side movement to trip the hammers.
الصفحة 98 - It must not show a tendency to agglomeration during storage. Powder which may be found defective in this respect, and which has not already been used in the manufacture of cartridges, will be returned to the makers at their expense, and deliveries of the powder under contract will be suspended. Other things being equal, that powder which produces the least heating of the barrel will be preferred.
الصفحة 411 - When the breechblock has descended so far as to unmask the bore the change in direction of the extractor stud groove causes the extractor to take a quick violent motion to the rear which throws the cartridge case entirely out of the gun.
الصفحة 241 - ... to reach the loading position, while the counterpoise describes an equal and opposite arc, rising while the gun falls. The gun, top carriage, and counterpoise remain parallel to their original positions throughout the motion. The elevating device is attached to the top carriage and is independent of any other part of the construction. The carriage is lifted on an oil pivot for traversing, and a small hydraulic pump is provided for the purpose. Except when raised for traversing the carriage is...
الصفحة 211 - SIR: In accordance with your instructions I have the honor to submit the following report of...
الصفحة 348 - Q, serves to cock the gun without opening the breech. The extractors, E, one on each side, lie flat against the rear face of the tube of the gun, and in recesses in the front face of the block. They revolve on pivots, P, which work in recesses in the curtain. The rear sides of the tails of these extractors form cam surfaces ; the lower front corners of the block are similarly surfaced, the...
الصفحة 34 - ... when the gun comes to rest it has the proper loading angle. After loading, the pawls are tripped, and the greater moment of the counterweight enables it to raise the gun to the firing position.
الصفحة 25 - It was found upon removing the jacket that one of the, segments had parted at about :i4¿ inches from the breech. The escaping gas had cut the wires at this point, leaving an opening about one-eighth of an inch wide — the full width of a segment — from lining tube to the space between wires and jacket. The escape of gas was thus accounted for. The bore was considerably eroded and scored, but the segments, with the one exception, were intact. From the appearance of the broken segment it seems...

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