321260

Information

• Patent Grant
• 321260

• References
• Source

• Patent Number

  321,260

• Date Filed

  Not available

• Date Issued

  Tuesday, June 30, 1885
  140 years ago

• CPC

  • B23P19/082 - for placing washers on nuts
  • F16B19/1054 - the pull-mandrel or the like being frangible
  • Y10T29/49915 - Overedge assembling of seated part
  • Y10T29/4992 - by flaring inserted cup or tube end

• US Classifications

  • 470 - Threaded, headed fastener, or washer making: process and apparatus
  • 029 - Metal working
  • 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener