Strand Shifting Patents (Class 57/85)
  • Synchronous yarn feeding device
    Patent number: 4953348
    Abstract: A synchronous yarn feeding device comprises a yarn feeding drum and a driving belt. The drum is provided with protrusions or studs that are arranged for cooperative engagement with concave surfaces or holes in the driving belt. A portion of the driving belt presses yarn onto the drum such that rotation of the drum and feeding of the yarn are synchronous with the speed of the driving belt.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: September 4, 1990
    Inventor: Jen F. Chen
  • Ring spinning frame with drawing mechanism stop motion
    Patent number: 4213290
    Abstract: Ring spinning machine includes a drawing frame having, at a given location therein, a draw-up roll for drawing therethrough in a given direction a roving being spun into a thread, and a roving-clamping device responsive to a break in the thread for clamping the roving, the roving-clamping device being controllably deflectable transversely to the given drawing direction in vicinity of the given location.
    Type: Grant
    Filed: August 18, 1978
    Date of Patent: July 22, 1980
    Assignee: W. Schlafhorst & Co.
    Inventor: Wilhelm Kupper