1927865

Information

• Patent Grant
• 1927865

• References
• Source

• Patent Number

  1,927,865

• Date Filed

  Not available

• Date Issued

  Tuesday, September 26, 1933
  91 years ago

• CPC

  • B28D1/14 - by boring or drilling
  • B23B51/0426 - with centering devices
  • B24B27/06 - Grinders for cutting-off
  • B28D1/041 - with cylinder saws
  • C03B33/04 - Cutting or splitting in curves, especially for making spectacle lenses
  • E21B10/48 - the bit being of core type
  • B23B2226/45 - Glass
  • Y10T408/44 - with means to apply transient, fluent medium to work or product
  • Y10T408/56245 - including tool-guide [or bushing]
  • Y10T408/81 - Tool having crystalline cutting edge
  • Y10T408/895 - Having axial, core-receiving central portion

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool