Annual Report (or Report) of the Secretary of War, Volumen3U.S. Government Printing Office, 1886 |
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Página 15
... original tube , due probably to faulty treatment in manufacture , and which , acting in the same direction as the powder strains , caused an enlargement of the bore such as was not to be expected from the action of the powder alone ...
... original tube , due probably to faulty treatment in manufacture , and which , acting in the same direction as the powder strains , caused an enlargement of the bore such as was not to be expected from the action of the powder alone ...
Página 83
... original locking device was a hooked lever attached to one clamp above the center of the breech , which caught upon a pin in the other clamp when the mechanism was closed . It was furnished with a flat retaining spring of steel . THE ...
... original locking device was a hooked lever attached to one clamp above the center of the breech , which caught upon a pin in the other clamp when the mechanism was closed . It was furnished with a flat retaining spring of steel . THE ...
Página 84
... ( original ) 135.25 Total length of chamber ( original ) 24.75 Length of rifled portion of bore ( after 16th round ) . 133.25 Total length of chamber ( after 16th round ) 26.75 Breech clamps ( two ) : Thickness of metal : At bottom At ...
... ( original ) 135.25 Total length of chamber ( original ) 24.75 Length of rifled portion of bore ( after 16th round ) . 133.25 Total length of chamber ( after 16th round ) 26.75 Breech clamps ( two ) : Thickness of metal : At bottom At ...
Página 85
... original one . After the 13th round the steel locking catch was replaced by one of wrought iron 1.25 inches thick and 5 inches wide , fitting over two 2.25 - inch steel pins . After the 14th round a new locking plate and a new pin on ...
... original one . After the 13th round the steel locking catch was replaced by one of wrought iron 1.25 inches thick and 5 inches wide , fitting over two 2.25 - inch steel pins . After the 14th round a new locking plate and a new pin on ...
Página 86
... Original gas check or " cartridge head . " ( Plate II , Fig . 1 . ) - This was made of composition metal or bronze , and has already been suffi- ciently described . Its principal dimensions are as follows : Total length .... Length of ...
... Original gas check or " cartridge head . " ( Plate II , Fig . 1 . ) - This was made of composition metal or bronze , and has already been suffi- ciently described . Its principal dimensions are as follows : Total length .... Length of ...
Otras ediciones - Ver todas
Annual Reports of the War Department, Volumen1,Parte10 United States. War Department Vista completa - 1900 |
Términos y frases comunes
35 Hotchkiss ammunition Appendix Arsenal band blank cartridges bolts bore breech mechanism breech-loading rifle caliber 45 carriage cartridge cast Cast band cast-iron cent center of impact chamber Chief of Ordnance cincha clamps compression copper cylinder Density deviation from center Du Pont's Elastic limit eter Exterior diameter feet Fired into sand flight forgings Frankford Arsenal front fuze gallons gas check gas-check Gatling gun grooves hoop Hotchkiss 181 inch of original Inside iron jacket loading Mean metal Middle Midvale Steel Company miles an hour mortar mountain gun muzzle Number of rounds P. M.-Barometer pack piece pins plate Pont's pounds per square powder pressure projectile radius rear Recoil ring sabot saddle sand butt screws Sept shell shot shrinkage specimens square inch straps surface tangential target Tensile strength tension thermom thick trunnion-hoop trunnions tube velocity Watertown Arsenal weight West Point Foundry wheels wire yards
Pasajes populares
Página 7 - All purchases and contracts for supplies or services in any of the departments of the Government, except for personal services, shall be made by advertising a sufficient time previously for proposals respecting the same when the public exigencies do not require the immediate delivery of the articles or performance of the service. When immediate delivery or performance is required by the public exigency the articles or service required may be procured by open purchase or contract at the places and...
Página 359 - Nos. 1 and 5, 2 and 6, 3 and 7, and 4 and 8 were taken, two and two, from the ends of the hoop opposite each other.
Página 328 - A Treatise on the Application of Wire to the Construction of Ordnance." The deductions are, however, different from, and, it is hoped, clearer than those given in the above-mentioned work. The following are, as far as known to the writer, original with him : Formula for extension of wire wound with uniform tension.
Página 378 - .505. Sectional area, .20 square inch. Gauged length, 2*. General, summary. Tensile strength per square Inch of original section .pounds.. Elastic limit per square inch o( original section do Elongation per inch after rupture inch Elongation per inch under strain at elastic l ¡mit , do.
Página 3 - SIR : I have the honor to submit the following report of the principal operations of the Ordnance Department during the fiscal year ended •June 30, 1886, with such remarks and recommendations as the intercuts of this branch of the military service seem to require.
Página 74 - States, shall be publicly subjected to the proper test, including such rapid firing as a like gun would be likely to be subjected to in actual battle, for the determination of the endurance of the same...
Página 208 - ... their manufacture has been undertaken by the Midvale Steel Company of Philadelphia. Three experimental hoops were ordered from this company for test, in order to ascertain how nearly they could come up to the requirements of the Department's circular letter. Two of these hoops were of the largest size that will be required for the experimental guns, and one was annealed after rolling, while the other was oil-tempered and annealed. The third hoop was hammered and oil-tempered, being of the size...
Página 419 - ... this head and rests against the breech-block. The head is not in contact with the block but nearly so, and the distance can be increased or diminished by the nuts screwed on to the rear end of the spindle.
Página 7 - I refer now to the minor supplies, the necessity for which can not be economically anticipated. To meet such cases, and in the interest of a true public economy, I •would recommend that section 3709, Revised Statutes, be amended by inserting after the word "services...
Página 419 - ... to the left when drawn out, and guides the block in entering the breech on closing, allowing the block to be freely turned. It serves, when closed, to fill the space between the jacket and the block. This ring is automatically locked to, and unlocked, by the motion of the block acting on a key -pin. The lever handle for turning the block, and the bronze handle for withdrawing it, are fastened to its rear end. When the lever handle is turned down, after closing the breech, it locks the. breechblock...