A COURSE OF INSTRUCTION IN ORDNANCE AND GUNNERY; PREPARED FOR THE USE OF THE CADETS OF THE UNITED STATES MILITARY ACADEMY

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Seite 555 - The lead is also allowed to percolate among the segments, so as to fill up the interstices, the central cavity being kept open by the insertion of a steel core. In this state the projectile is so compact that it...
Seite 138 - Manual, bronze used for ordnance consists of 90 parts of copper and 10 of tin, allowing a variation of one part of tin, more or less. It is more fusible than copper, much less so than tin, more sonorous, harder, and less susceptible of oxidation, and much less ductile, than either of its components.
Seite 93 - Prepare the ground for the base of the pile by raising it above the surrounding ground so as to throw off the water ; level it, ram it well, and cover it with a layer of screened sand.
Seite 147 - ... it can be easily drilled and turned in the lathe, and does not resist the file. It has a brilliant fracture, of a gray, or sometimes a bluish-gray color ; the color is lighter as the grain becomes closer, and its hardness increases at the same time.
Seite 334 - To CLEAN THE LOCK. — Wipe every part with a moist rag, and then a dry one ; if any part of the interior shows rust, put a drop of oil on the point or end of a piece of soft wood dipped into flour of emery ; rub out the rust and wipe the surface dry; then rub every part with a slightly oiled rag;.
Seite 334 - Do not put oil into the vent, as it will clog the passage and cause the first cap to miss fire ; but, with a slightly oiled rag on the wiper, rub the bore of the barrel and the face of the breech-screw, and immediately insert the tompion into the muzzle.

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