219892

Information

• Patent Grant
• 219892

• References
• Source

• Patent Number

  219,892

• Date Filed

  Not available

• Date Issued

  Tuesday, September 23, 1879
  145 years ago

• CPC

  • B23F11/00 - Making worm wheels
  • B23F5/22 - the tool being a hob for making spur gears
  • B23F23/1243 - Hob holders
  • Y10T74/19828 - Worm
  • Y10T409/103498 - Infeed of cutter

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 074 - Machine element or mechanism