The Establishment of Steel Gun Factories in the United States

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United States naval institute, 1884 - Firearms industry and trade - 379 pages
 

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Page 553 - Congress which of the navy-yards or arsenals owned by the Government has the best location and is best adapted for the establishment of a Government foundry ; or what other method, if any, should be adopted for the manufacture of heavy ordnance adapted to modern warfare, for the use of the Army and Navy of the United States ; the cost of all buildings, tools, and implements necessary to be used in the manufacture thereof, including the cost of a steam-hammer or apparatus of sufficient size for the...
Page 554 - Navy six officers, who shall constitute a board for the purpose of examining and reporting to Congress which of the navy-yards or arsenals, owned by the government has the best location and is best adapted for the establishment of a government foundry, or what other method, if any, should be adopted for the manufacture of heavy ordnance adapted to modern warfare, for the use of the Army and Navy of the United States...
Page 819 - Ordnance shall give attention to such programme of tests as may be submitted by the American Society of Civil Engineers, and the record of such tests shall be furnished said society, to be by them published at their own expense.
Page 554 - ... or arsenals, owned by the government has the best location and is best adapted for the establishment of a government foundry, or what other method, if any, should be adopted for the manufacture of heavy ordnance adapted to modern warfare, for the use of the Army and Navy of the United States, the cost of all buildings, tools, and implements necessary to be used in the manufacture thereof, including the cost of a steam-hammer or apparatus of sufficient size for the manufacture of the heaviest...
Page 730 - These are preheated and dropped at the deepest part of the hearth in front of the doors. Preheating is employed not only to keep the furnace hot, but to save oxidation. The materials used at this period of the operation are chosen with reference to the quality required in the finished product. For projectiles, the Terre Noire Company generally use Bessemer ingot and rail ends, with sinking-heads from previous projectile charges. These are all high in carbon, and contain some manganese. The proportion...
Page 566 - ... what other method, if any, should be adopted for the manufacture of heavy ordnance adapted to modern warfare, for the use of the Army and Navy of the United States, the cost of all buildings, tools, and implements necessary to be used in the manufacture thereof, including the cost of a steam hammer or apparatus of sufficient size for the manufacture of the heaviest guns: Commodore Edward Simpson, United States Navy; Captain Edmund 0.
Page 638 - ... contraction in the mould. The contraction in length in the mould during the action of the pump, while the maximum pressure is being reached and sustained, amounts to one-eighth of the length of the ingot. After this effect has been produced, there is no farther advantage derived from the pressure in the way of eliminating impurities, but the contraction, in cooling, still goes on, and the pressure by the accumulator is considered necessary in order to follow up the metal as it contracts, for...
Page 550 - Department for these purposes, one hundred and fifty thousand dollars. And any balance of the appropriation made for commencing the manufacture of steel rifled breech-loading guns, with carriages and ammunition, that may be unexpended during the fiscal -year eighteen hundred and eighty-three, is hereby re-appropriated and made available for continuing that service during the fiscal year ending June thirtieth, eighteen hundred and eighty-four.
Page 638 - ... subsequent forging of the metal. The flask is made of steel and is built up of sections united by broad flanges bolted together in such numbers as to accommodate the length of the ingot to be cast. All moulds are cylindrical in form. The interior of the flask is lined with square rods of wrought-iron, longitudinally arranged, which form, when in place, a complete cylindrical interior surface.
Page 586 - The most notable example of this kind of hydraulic crane is that which has recently been erected in the Royal Italian Arsenal at Spezia, and which is capable of lifting 160 tons through a range of 40 feet. This crane is carried upon a ring of live rollers supported by a pedestal of masonry, and the slewing is effected by an hydraulic engine applied to a pinion which gears with a circular rack. The rake of the jib or projection from the centre of rotation is 65 feet, and its height from the quay-level...

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