Report of the Chief of Ordnance to the Secretary of WarU.S. Government Printing Office, 1886 |
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Página 9
... pounds of powder , and 79 rounds with an 800 - pound projectile . The mean pressure for one hundred observations has been 27,998 pounds per square inch of powder chamber , and the maximum pressure registered in any single round 34,400 ...
... pounds of powder , and 79 rounds with an 800 - pound projectile . The mean pressure for one hundred observations has been 27,998 pounds per square inch of powder chamber , and the maximum pressure registered in any single round 34,400 ...
Página 11
... pounds and the weight of the charged shell 610 pounds . With full and half charges the velocity and pressures were as follows : Kind of powder . Charge . Shell . Velocity . Pressure . O. V. M. V Pounds . 52 Pounds . 610 Feet . Pounds ...
... pounds and the weight of the charged shell 610 pounds . With full and half charges the velocity and pressures were as follows : Kind of powder . Charge . Shell . Velocity . Pressure . O. V. M. V Pounds . 52 Pounds . 610 Feet . Pounds ...
Página 14
... Pounds . Pounds . Feet . Pounds . 100 182 2 , 135 29 , 450 100 235 1 , 933 32 , 150 100 286 1,787 32 , 800 100 235 1,929 32 , 950 100 286 1 , 812 35 , 450 100 286 1,702 26,425 100 235 2 , 017 37 , 662 ACCURACY OF FIRE . In firing two ...
... Pounds . Pounds . Feet . Pounds . 100 182 2 , 135 29 , 450 100 235 1 , 933 32 , 150 100 286 1,787 32 , 800 100 235 1,929 32 , 950 100 286 1 , 812 35 , 450 100 286 1,702 26,425 100 235 2 , 017 37 , 662 ACCURACY OF FIRE . In firing two ...
Página 23
... pounds , and is graceful in its outlines . It was tested by firing 500 rounds from the 3.2 - inch steel field gun , of less than 800 pounds weight , using charges of 34 pounds , with a projectile of 13 pounds , having a velocity of over ...
... pounds , and is graceful in its outlines . It was tested by firing 500 rounds from the 3.2 - inch steel field gun , of less than 800 pounds weight , using charges of 34 pounds , with a projectile of 13 pounds , having a velocity of over ...
Página 37
... pounds paint , olive . 1,290 pounds paint , various . 5 pounds putty . 4 150 pans . smiths ' pokers , 2 pounds polish for leather . 307 arm - racks , portable . 287 5 reamers . pairs magazine slippers . 5 stamps , seal . 1 stencil plate ...
... pounds paint , olive . 1,290 pounds paint , various . 5 pounds putty . 4 150 pans . smiths ' pokers , 2 pounds polish for leather . 307 arm - racks , portable . 287 5 reamers . pairs magazine slippers . 5 stamps , seal . 1 stencil plate ...
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Términos y frases comunes
35 Hotchkiss ammunition Appendix 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 DIAM'S Du Pont's Elastic limit Elongation after rupture eter Exterior diameter feet Fired into sand flight forgings front fuze gas check gas-check Gatling gun grooves H Ex1 pt2 hoop humid inch of original Inside iron jacket length loading metal Middle Midvale Steel Company miles an hour mortar MOUNTAIN GUN muzzle Number Ordnance Department P. M.-Barometer pack pins plate Pont's pounds per square powder pressure radius rear recoil ring sabot saddle sand butt Sandy Hook screws Sept shell shot shrinkage square inch straps surface target Tensile strength tension thermom thick tion trunnion-hoop trunnions tube 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.
Página 383 - 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 354 - 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 92 - 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 to the satisfaction of the President of the United States or such persons as he may select; and he is hereby authorized to select not to exceed five persons, who shall be skilled in...
Página 3 - I have the honor to submit the following report of the principal operations of the Ordnance Department during the fiscal year ended June 30, 1871, with such remarks and recommendations as the interests of that branch of the military service seem to require.
Página 227 - The Chief of Ordnance further stated in his report above quoted, page 10: The replies to this letter were, with one or two exceptions, adverse to undertaking such work, arising, I presume, from want of skill and knowledge in the treatment of steel for gun construction and from the want of the requisite plant to perfect the forgings. The conclusion reached was that the plant or the experience in this country cannot as yet produce the steel forgings, for tube and jacket, for so large a gnu as an 8-inch...
Página 395 - Reduction in diameter at point of rupture Reduction in area after rupture, per cent of original section Position of rupture Character of hroken surface Elongation of inch sections pounds..
Página 441 - ... 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 3 - Jnne 30, 1866, ae proceeds of sales of Government property 43, 687 10 Amount transferred from ordnance appropriations in settlement of accounts during the fiscal year ended June 30...
Página 317 - Steel Company during the fiscal year ending June 30, 1886.* During the time specified the Midvale Steel Company continued work under the following contracts with the department, viz: (1) Forgings for fifty steel tubes, breech-cups, and muzzle-collars for 8-inch converted rides. (2) Forging...