File:History of the manufacture of armor plate for the United States navy (1899) (14595597419).jpg

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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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ickel-steel armor. Furthermore, thenumber of separate operations is far greater than in theapplication of the Harvey process, and the metal is moredifl&cult to machine in all stages of manufacture. To summarize, the following reasons can be given whyarmor made by the Krupp process costs more to manu-facture than the hard-faced, nickel-steel armor heretoforepurchased by the Government: 1. Greater cost of materials used. 2. Greater number of operations through which eachplate has to pass, by which charges are increased andproduct reduced. 3. Greater percentage of loss, due to uncertainties andliability to errors in manufacture. 4. Greater difiiculty in cutting the metal cold, wherebythe product of machine tools is decreased. 5. Reduction in the average thickness of plates, corre-sponding to greater ballistic resistance, whereby the num- 4 3 O fi 2- 5 re • ^ l-H ?r 73 CO -IWW r a 2. Si. B* 3 :; — O 2 D- S re 3 ?> Ou. s--r > rr -J n r> w
Text Appearing After Image:
/ ARMOR PLATE FOR THE NAVY. 24 ber of individual plates in a given total tonnage is in-creased. This causes a corresponding increase in thenumber of operations to be performed and the amountof machine work to be done, and materially decreasesthe weight of the product that can be produced by agiven plant within a given time. In response to a request from the Bureau of Ordnancefor information as to the price of armor manufacturedby the new process the manufacturers agreed to furnishit to the United States for $545 per ton, which includedthe royalty to be paid the inventor. It should be borne inmind that the price named was for armor having a bal-listic resistance 25 per cent, greater than that of Harvey-ized armor, and that this price is less than that paid forKruppized armor by any other government in the world. The Navy Department communicated this informationto Congress in a letter from Rear Admiral ONeil, whostated that positive evidence had been received by theNavy Department that

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Flickr tags
InfoField
  • bookid:historyofmanufac00amer
  • bookyear:1899
  • bookdecade:1890
  • bookcentury:1800
  • bookauthor:American_Iron_and_Steel_Association__comp
  • booksubject:United_States__Navy
  • booksubject:Armor_plate
  • bookpublisher:Philadelphia__American_Iron_and_Steel_Association
  • bookcontributor:The_Library_of_Congress
  • booksponsor:The_Library_of_Congress
  • bookleafnumber:102
  • bookcollection:library_of_congress
  • bookcollection:americana
Flickr posted date
InfoField
30 July 2014


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