Patents by Inventor John Dalton Griffith

John Dalton Griffith has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7451788
    Abstract: An apparatus for weaving leno fabric on a loom including a support pivotally mounted on a loom, and carrying a plurality of ground thread blades arranged side by side in a row and spaced apart to define guide spaces therebetween for ground threads. A leno guide blade divides each guide space into first and second guide slots, each leno guide blade having a leno guide eye through which a leno thread is guided, adjacent ground thread blades projecting beyond the terminal end of the leno guide blade located therebetween to define a ground thread cross-over space.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: November 18, 2008
    Assignee: Griffith Textile Machines Limited
    Inventor: John Dalton Griffith
  • Patent number: 7392829
    Abstract: A yarn carrier (30) for presenting a selected yarn (16) to a pair of gripper jaws (26,28). The yarn carrier (30) includes a yarn guide passageway (14) defining a path along which the selected yarn (16) is longitudinally guided. The passageway (14) has a yarn inlet end, a yarn outlet end and adjacent to the yarn outlet end yarn guides (32) to constrain the tail of the yarn (YT) against lateral deflection in a longitudinal direction of the yarn carrier (30). The yarn guides (32) are depressible on contact with open gripper jaws (26,28) to enable the gripper jaws (26,28) to grip the yarn tail (YT).
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: July 1, 2008
    Assignee: Griffith Textile Machines Limited
    Inventor: John Dalton Griffith
  • Patent number: 6585744
    Abstract: A sewing device comprising an elongate rigid support body having sewing means mounted at one end adapted to create a continuous chain stitch and drive means located at the opposite end operable for driving the sewing means.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: July 1, 2003
    Assignee: Griffith Textile Machines, Ltd.
    Inventor: John Dalton Griffith
  • Patent number: 6386241
    Abstract: A reed assembly for leno weaving, the reed assembly including upper and lower reed frame members between which a plurality of dent fingers extend, each pair of neighbouring dent fingers being spaced apart to define a dent space for a crossing-over warp yarn, a yarn guide finger co-operating with each dent space for guiding a crossed-over warp yarn therethrough, each yarn guide finger extending from one of the frame members and having a terminal end spaced from the other frame member so as to divide the co-operating dent space into a pair of cross-over dent spaces extending between said terminal end and said one frame member and being defined between facing sides of the guide finger and the pair of neighbouring dent fingers and cross-over transfer region extending between said terminal end and said other frame member and being located between opposed faces of the pair of neighbouring dent fingers.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: May 14, 2002
    Assignee: Griffith Textile Machines Ltd.
    Inventor: John Dalton Griffith
  • Patent number: 6234212
    Abstract: A pile loop forming assembly for looms for reliably transferring yarn from one side of the lance to the other in order for the yarn to be wrapped around the lance to form a loop. The loops may be cut by a blade as the loops advance and ride over the blade edge. The loops are formed by yarns passing through reed fingers wherein lances move the yarn from one side of the reed finger to the other. The lances are attached to a bar, which moves linearly in alternate directions so as to wag the lances to either side of the reed space. A heald moves the yarn up or down to selectively engage or disengage from the lances. A guide formation on a portion of the reed space helps deflect the yarn from one side of the lance to the other. The reed can pivot between a beat-up position and a weft insert position. As the reed moves to the beat-up position it engages the newly formed pile loop on the lance and pushes it to the fell.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: May 22, 2001
    Assignee: Griffith Textile Machines, Ltd.
    Inventor: John Dalton Griffith
  • Patent number: 5743306
    Abstract: A tuft carrier loading apparatus for loading individual tufts into tuft-retention sites spaced along an elongate tuft carrier which is guided for longitudinal movement along a path of travel having a plurality of individually selectively operable tuft forming devices. Each tuft forming device is operable to feed an individual tuft to a tuft-retention site on the carrier. The carrier moves along said path of travel intermittently through a series of successive positions where predefined tuft retention sites are moved temporarily into registry with each tuft forming devices. By controlling selection of the tuft forming devices, tufts are fed to selected sites while the carrier is located at each successive position.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: April 28, 1998
    Assignee: Ulster Carpet Mills (Holdings) Limited
    Inventors: Richard Donald Stewart, John Dalton Griffith
  • Patent number: 3996971
    Abstract: A needle loom for producing a decorative selvedge at the knitted edge of a fabric during weaving comprising a weft inserter for inserting loops of weft into a warp shed from one side, a knitting needle for securing the weft loops and movable weft loop engaging means for engaging selected weft loops and causing said selected weft loops to extend beyond the knitted edge of the fabric and forming a decorative edge.The invention also includes a method producing a decorative selvedge on the aforesaid loom.
    Type: Grant
    Filed: September 30, 1975
    Date of Patent: December 14, 1976
    Assignee: Bonas Machine Company Limited
    Inventors: John Dalton Griffith, Robin Bidgood