A Treatise on Ordnance and Armor: Embracing Descriptions, Discussions, and Professional Opinions Concerning the Material, Fabrication, Requirements, Capabilities, and Endurance of European and American Guns for Naval, Sea-coast, and Iron-clad Warfare, and Their Rifling, Projectiles and Breech-loadingD. Van Mostrand, 1865 - 900 páginas |
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Otras ediciones - Ver todas
A Treatise on Ordnance and Armor: Embracing Descriptions, Discussions, and ... Alexander Lyman Holley Sin vista previa disponible - 2015 |
Términos y frases comunes
10-inch gun 32-pounder Gun 6-pounder armor Armstrong gun Armstrong rifle ball breech breech-loader bursting charge calibre cannon Captain Blakely Carronade cast hollow cast steel cast-iron gun chamber coils Columbiad Committee on Ordnance construction cracked Cross section cylinder Diameter of bore Ditto ductility effect elastic limit elasticity Elevation elongated Elswick experiments feet fired forged fracture greater grooves gun-cotton heat heavy shot hole hooped gun horizontal Horsfall indent inner tube iron iron-clad Krupp's laminated armor length of bore Longitudinal section Mortar muzzle Navy outer Parrott penetrate pieces pounder powder pressure projectiles punching range resistance ribs rings round shot rounds Select Committee service charge ship Shoeburyness Sir William Armstrong skin smashed smooth-bore solid shot spherical shot square inch steel shell strain stretched struck TABLE tensile strength Thames Iron thickness of metal trunnions vent-piece Warrior target Washington Navy Yard weight welded Whitworth wire Woolwich wrought wrought-iron yards
Pasajes populares
Página 567 - This law rules the practical application of gun-cotton to artillery. A cartridge must not be compact, it must be spread out or expanded to the full room it requires. For this purpose, a hollow space is preserved in the centre of the cartridge by some means or other. The best means is to use a hollow thin wooden tube to form a core ; this tube should be as long as to leave a sufficient space behind the shot for the gun-cotton. On this long core the simple cotton yarn is wound round like thread on...
Página 533 - This 68 per cent, is not only waste in itself, but it wastes the power of the remaining 32 per cent. It wastes it mechanically, by using up a large portion of the mechanical force of the useful gases. The waste of gunpowder issues from the gun with much higher velocity than the projectile ; and if it be remembered that in 100 Ibs.
Página 537 - ... diameters, and it is out of these webs that common rifle cartridges are made, merely by cutting them into the proper lengths, and inclosing them in stiff cylinders of pasteboard, which form the cartridges. (In this shape its combustion in the open air takes place at a speed of...
Página 597 - ... confirmed in England by the experiments of Sir William Armstrong in 1855, and attested by his evidence before a committee of the House of Commons in 1863. He there describes his own gun as one "with a steel tube surrounded with coiled cylinders," — as " peculiar in being mainly composed of tubes, or pipes, or cylinders, formed by coiling spirally long bars of iron into tubes and welding them on the edges, as is done in gun-barrels.
Página 343 - I shall therefore close this paper with predicting, that whatever State shall thoroughly comprehend the nature and advantages of rifled barrel pieces, and, having facilitated and completed their construction, shall introduce into their armies their general use with a dexterity in the management of them ; they will by this means acquire a superiority, which will almost equal...
Página 589 - But wrought iron and all malleable bodies are capable of being extended without fracture much beyond their power of elasticity. They may, therefore, be greatly elongated without being weakened. Hence we have only to form the hoops small in excess, and they will accommodate themselves under the strain without the least injury.
Página 567 - To carry this into effect, the densest kind of gun cotton must be used. It must no longer consist of fine threads or hollow textures wound on roomy cores. All you have to do is to make it dense, solid, hard. Twist it, squeeze it, ram it, compress it ; and insert this hard, dense cotton rope or cylinder or cake in a hole in a rock, or the drift...
Página 567 - Why a straight cotton thread should burn with a slow creeping motion when laid out straight, and with a rapid one when wound round in a cord, and again much faster when closed in from the air, is far from obvious at first sight ; but the facts being so, deserve mature consideration. The cartridge of a common rifle in...
Página 181 - The cast iron did not return to its original dimensions, but the smallest diameter was about one inch above the water-line. Tin showed no change of form, there being apparently no intermediate state between the melting-point and absolute solidity. Brass, gun-metal, and zinc showed the effect slightly ; but instead of a contraction just above the water-line, there was an expansion or bulging.
Página 588 - TO^th part of their diameters, less upon their insides than the parts that they enclose. They are then expanded by heat, and, being turned on to their places, suffered to cool, when they shrink and compress, first the body of the gun, and afterwards each successive layer, all that it encloses.