Reference number
  • LAN/6/181
Alternative reference number
  • 1923-196643
Level
  • Item
Date
  • 25 Nov 1921
Description
  • Refers to patent 1920-166017; idle pulleys used in the previous patent are replaced by radial arms mounted at or near the extremities of a transverse tube carried by the box frame. Later application 3 January 1922.