Detector Fork Patents (Class 139/372)
  • Patent number: 8220500
    Abstract: A power loom includes a frame, a plurality of warps, a weft spool, a plurality of wefts, and a speed adjustment device. The speed adjustment device includes a support rack, a rotation shaft, a drive motor, a sensor, a press member, and a press rod. Thus, when the output speed of the wefts is gradually reduced to a preset value, the wefts are tensioned and moved upward, and the press member is moved upward to touch the sensor which sends a signal to actuate the drive motor which increases the rotation speed of the rotation shaft and the weft spool to increase the output speed of the wefts largely so that the wefts can be pulled outward from the weft spool quickly to prevent the wefts from being torn or broken due to an excessive pulling force.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: July 17, 2012
    Inventor: Shun-Hsing Wang
  • Patent number: 4976292
    Abstract: A weft end treating device for a shuttleless loom comprises a yarn holding device which holds the free end of an inserted weft and tensions the weft in synchronism with the beating motion, and pushing dents for pushing the free end of the weft into the yarn holding device when the weft is beaten up. The yarn holding device is fixedly mounted on the frame of a loom at a position on the extension line of the cloth fell on the weft arriving side. The pushing dents are fixedly provided on the sley, of the loom opposite to the yarn holding device.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: December 11, 1990
    Assignee: Tagawa Kikai Co., Ltd.
    Inventor: Hiroyasu Matsumoto
  • Patent number: 4009737
    Abstract: A filling thread stop motion device for a loom which, upon failure of delivery of a filling thread during the weaving operation, the device shuts down the loom.
    Type: Grant
    Filed: January 28, 1976
    Date of Patent: March 1, 1977
    Assignee: Ruti Machinery Works Ltd.
    Inventors: Willy Rohr, Viktor Smutny