Identifier: historyofmanufac00amer (find matches)
Title: History of the manufacture of armor plate for the United States navy
Year: 1899 (1890s)
Authors: American Iron and Steel Association, comp
Subjects: United States. Navy Armor-plate
Publisher: Philadelphia, American Iron and Steel Association
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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,) and byRepresentative Albert M. Todd, (Congressional Record, February 22, 1899, p. 2,883,)is not an essential part of the process for making the new armor, but describesan improved furnace in which two armor plates may be supercarbonized instead ofone, as heretofore, by well-known methods of applying hydro-carbon gases, illumi-nating gas, paraflane vajwr, etc., the improvement in this case consisting of mak-ing the armor plates to be thus treated a part of the furnace structure. Thispatent does not include the secret metal amalgamation feature employed in mak-ing the new armor, a knowledge of which is absolutely essential, nor does it dealin any way with the various complicated treatments entering into the manufactureof Krupp armor. c 3 7I 0 S-. ^ ^ n • Os i S tin 2: ^ n Ou 0 X B I) w 1^ X cr5 ^ 0 ^ ?o HH c g ^ 3f ^ 3 w 2i 0re S. T) :z: 0. iT S 8 nC I r I 0 0 2 3 01 * n re >r 3 w r h C/3 t-H i* 00 H^ w 1-4 ^ n S* zl ^ ? S-B. H s-^ m s to ^Tj sr w Si- ^ (^ re 2- tJ n ■n CO 0 0
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ARMOR PLATE FOR THE NAVY. 22 partment and the data are now part of the Departmentrecords. The plate showed a capacity to resist projectileperforation at the unprecedented velocity for a six-incharmor test of 2,350 feet per second from a six-inch gunfired at point-blank range. In October of the same yeara twelve-inch experimental Kruppized plate manufacturedby the Carnegie Steel Company, Limited, was tested bythe Bureau of Ordnance. Rear Admiral Charles ONeil,Chief of the Bureau of Ordnance, the highest authority inthe United States Navy, and one of the leading ordnanceengineers of the world, in a letter to the Senate NavalCommittee referred to these tests as showing markedqualities of excellence and of superiority over the ordi-nary face-hardened armor. In November, 1898, a plate six inches thick, manufac-tured by the Bethlehem Iron Company by the Kruppprocess, was tested at the Redington proving ground un-der the supervision of the United States Naval Inspectorand in the presence of

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