Threading (manufacturing) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Threading (manufacturing)" in English language version.

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books.google.com

cutwel.co.uk

ghostarchive.org

komet.com

loc.gov

lccn.loc.gov

madehow.com

protool-ltd.co.uk

  • "Thread Milling". www.protool-ltd.co.uk. Protool Ltd.
  • url=https://www.protool-ltd.co.uk/c/thread-milling

sherline.com

uspto.gov

pdfpiw.uspto.gov

  • Harvey J. Harwood, "Improved screw machine," U.S. Patent no. 65,567 (issued: June 11, 1867). In his patent, Harwood states:
    "In the manufacture of wood-screws the thread has been formed hitherto by removing the metal between the turns of the thread by means of dies or cutters.
    By my invention the blank is rotated between rotating or reciprocating dies, suitably formed, and set in motion, by means of which the thread is impressed on the blank without removing any part of the metal."
    Apparently Harwood and the patent examiner were ignorant of Keane's 1836 patent.
  • Harvey J. Harwood, "Improved screw machine," U.S. Patent no. 65,567 (issued: June 11, 1867). In his patent, Harwood states:
    "In the manufacture of wood-screws the thread has been formed hitherto by removing the metal between the turns of the thread by means of dies or cutters.
    By my invention the blank is rotated between rotating or reciprocating dies, suitably formed, and set in motion, by means of which the thread is impressed on the blank without removing any part of the metal."
    Apparently Harwood and the patent examiner were ignorant of Keane's 1836 patent.
  • Harvey J. Harwood, "Improved screw machine," U.S. Patent no. 65,567 (issued: June 11, 1867). In his patent, Harwood states:
    "In the manufacture of wood-screws the thread has been formed hitherto by removing the metal between the turns of the thread by means of dies or cutters.
    By my invention the blank is rotated between rotating or reciprocating dies, suitably formed, and set in motion, by means of which the thread is impressed on the blank without removing any part of the metal."
    Apparently Harwood and the patent examiner were ignorant of Keane's 1836 patent.
  • Charles D. Rogers, "Die for rolling screw-threads," U.S. Patent no. 370,354 (filed: May 11, 1887 ; issued: Sept. 20, 1887).

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