With Fiber Orienting Patents (Class 19/247)
  • Devices for producing a continuous thread from a roving composed of parallel short fibers
    Patent number: 4615170
    Abstract: A roving of short fibers is converted to a continuous twisted thread by a device which grips the roving between the facing teeth of two endless belts, and an acoustically generated transverse air jet is directed at the side of the roving, at a fixed point situated between the two belts. The direction of the air jet is reversed each time the fixed point is passed either a pair of facing teeth, or the midpoint in the gap between two successive pairs of facing teeth.
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: October 7, 1986
    Assignee: Interaction
    Inventor: Jean-Jacques Walter
  • High draft apparatus for worsted spinning process
    Patent number: 4434533
    Abstract: A high draft apparatus for use in the worsted spinning process. At the gilling or bobinoir step of the worsted spinning process, a porcupine roller and a middle roller are disposed between a front roller and a back roller to prevent an occurrence of unevenness and to obtain a uniform sliver.
    Type: Grant
    Filed: February 18, 1982
    Date of Patent: March 6, 1984
    Assignee: Nakagawa, Seisakusho Co., Ltd.
    Inventor: Goro Ogawa