Annual Report (or Report) of the Secretary of War, Volumen3U.S. Government Printing Office, 1886 |
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Página 5
... number of years , has recently been so far perfected through the efforts of Mr. Morse that it has been decided to issue a number for trial with the troops . The manufacture of a suitable num- ber for this purpose is now in progress at ...
... number of years , has recently been so far perfected through the efforts of Mr. Morse that it has been decided to issue a number for trial with the troops . The manufacture of a suitable num- ber for this purpose is now in progress at ...
Página 9
... number of rounds thus far fired is 137 ; of which number 123 have been with the full charge of 265 pounds of powder , and 79 rounds with an 800 - pound projectile . The mean pressure for one hundred observations has been 27,998 pounds ...
... number of rounds thus far fired is 137 ; of which number 123 have been with the full charge of 265 pounds of powder , and 79 rounds with an 800 - pound projectile . The mean pressure for one hundred observations has been 27,998 pounds ...
Página 10
... number and in gravity of character as the firing progressed . At the 137th round the erosion had become so pronounced along the front slope of the powder chamber and in the shot recess that the Board decided to discontinue the firing ...
... number and in gravity of character as the firing progressed . At the 137th round the erosion had become so pronounced along the front slope of the powder chamber and in the shot recess that the Board decided to discontinue the firing ...
Página 18
... number of possible rejec- tions . The production of the tube and jacket forgings for 12 - inch guns could be accomplished in from two and one - half to three years . Then the time for finishing and assembling the parts - that is the ...
... number of possible rejec- tions . The production of the tube and jacket forgings for 12 - inch guns could be accomplished in from two and one - half to three years . Then the time for finishing and assembling the parts - that is the ...
Página 23
... number of the guns are , however , already finished , and it is expected that the whole lot will be completed by the end of November . The experimental metal field carriage made for these 3.2 - inch guns failed on trial , owing , it is ...
... number of the guns are , however , already finished , and it is expected that the whole lot will be completed by the end of November . The experimental metal field carriage made for these 3.2 - inch guns failed on trial , owing , it is ...
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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...