Warp Patents (Class 139/349)
  • Patent number: 7318456
    Abstract: A modular weaving machine includes a loom chassis and a plurality of modular warp units. The warp units are each configured for supporting a plurality of removable bobbins thereon, the bobbins being pre-loadable with a plurality of warp threads. The loom chassis is configured to receivably support the warp units thereon, so that the warp threads are disposed in parallel, spaced relation to one another, extending in a downstream direction. A plurality of shedding actuators are coupled to the loom chassis and configured to form a shed with warp threads of each of the warp units. A weft insertion module is configured to insert a weft thread through the shed.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: January 15, 2008
    Assignee: Massachusetts Institute of Technology
    Inventors: Samir A. Nayfeh, Jonathan D. Rohrs
  • Patent number: 7178558
    Abstract: A modular weaving machine includes a loom chassis and a plurality of modular warp units. The warp units are each configured for being pre-loaded with a plurality of warp threads. The loom chassis is configured to receivably support the warp units thereon, so that the warp threads are disposed in parallel, spaced relation to one another, extending in a downstream direction. A plurality of shedding actuators are coupled to the loom chassis and configured to form a shed with warp threads of each of the warp units. A weft insertion module is configured to insert a weft thread through the shed.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: February 20, 2007
    Assignee: Massachusetts Institute of Technology
    Inventors: Samir A. Nayfeh, Jonathan D. Robrs
  • Patent number: 4759393
    Abstract: A loom having a drum type weft reservoir including a drum on which a predetermined length of a weft yarn is wound to be measured and reserved prior to weft picking. The weft reservoir is automatically prepared for loom starting by merely operating a manual switch. The local includes a clutch which is engaged at a predetermined operational phase of the loom to drive the weft reservoir. If the manual switch is actuated when the clutch is disengaged, then the clutch is engaged at a second time substantially later than the first time at which the predetermined operational phase is reached. Any cut, broken or unnecessary weft yarn remaining wound on the drum when the switch is actuated is removed during the interval between the first and second times, e.g. by pulling the weft yarn from the side of a weft inserting nozzle.
    Type: Grant
    Filed: February 14, 1985
    Date of Patent: July 26, 1988
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takatsugu Kato, Takao Takahashi