Patents Assigned to The Singer Company
  • Patent number: 5718182
    Abstract: In a presser foot unit for a sewing machine, a holding member including a presser foot holding knuckle is provided. A presser foot having a pair of knuckles at the back end of the presser foot is also included. The knuckles on the presser foot are spaced apart to receive the presser foot holding knuckle. A presser foot support pin extends through the pair of knuckles on the presser foot and also through a groove in the presser foot holding knuckle, thereby mounting the presser foot to the holding member such that the presser foot can pivot about the support pin. The presser foot holding knuckle also forms curved protrusions that engage the pair of knuckles on the presser foot, such that the presser foot is constrained from moving laterally relative to the holding member. In addition, a spring is supported by the holding member for biasing the presser foot against a piece fabric during operation of the sewing machine.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: February 17, 1998
    Assignee: The Singer Company N.V.
    Inventors: Koichi Nakayama, Shinji Kojima
  • Patent number: 5715766
    Abstract: A presser unit for a bar tacking sewing machine comprises four separate clamp feet 15, 16, 17 and 18 which conform in outer appearance to the U-shaped stitches I--I, II--II and III--III to be formed at the tip end of the waist band portions of pants and a pressing mechanism 60 for elastically press each clamp feet 15, 16, 17 and 18 against a workpiece A with a given pressure thereby to elastically press the workpiece A.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: February 10, 1998
    Assignee: The Singer Company N.V.
    Inventor: Takao Numanoi
  • Patent number: 5697310
    Abstract: In a looper switching mechanism for an overlock sewing machine, a needle having a needle thread and movable vertically, is provided. A right looper having a thread hole at a tip end through which a right looper thread is inserted, includes a mounting hole into which a shaft portion of a spreader member body is attached. A hook portion having a tip end engageable with the thread hole is coupled to and extends from the spreader member body thereby forming the a spreader.
    Type: Grant
    Filed: August 1, 1996
    Date of Patent: December 16, 1997
    Assignee: The Singer Company N.V.
    Inventors: Yoshirou Shirakura, Shinji Kojima
  • Patent number: 5690040
    Abstract: The presser foot device of a sewing machine comprises a presser foot 2, a tension mechanism 3 disposed on the presser foot 2 and having a presser member 6 which is adjustably movable back and forth, a guide member 4 provided at a tip end portion of the presser foot 2, wherein a given gap .DELTA. is formed between the presser member 6 of the tension mechanism 3 and the guide member 4, and wherein a belt-shaped rubber member 8 supplied toward a needle penetration point N of the presser foot 2 is passed through the given gap .DELTA., thereby giving a given tension to the belt-shaped rubber member 8. As a result, it is possible to provide a presser foot device of a sewing machine capable of easily, stably and variably setting tension applied to a belt-shaped rubber member, thereby improving the quality of the sewn product and to improve the operability of mounting the belt-shaped rubber member therein by ensuring a large opening space.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: November 25, 1997
    Assignee: The Singer Company N.V.
    Inventors: Koichi Nakayama, Shinji Kojima
  • Patent number: 5642678
    Abstract: Thread guide devices capable of easily and quickly performing a threading operation with an excellent operability, whereby a thread is hardly come off or entangled, and hence a sewing operation is hardly interrupted when the thread is come off or entangled, leading to an excellent sewing operating performance. Each thread guide device of sewing machine includes a thread guide member disposed between a thread spool and a tension device respectively provided on a body for guiding a thread from the thread spool, and the thread guide member comprises a base end portion attached to one end of a thread guide groove portion which is opened at an upper end of the body, a tip end portion having an inclination portion which is elastically brought into contact with a rear side wall of the body at a front surface of the inclination portion, and a thread accommodation space which is defined in a lower end portion of the thread guide groove portion.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: July 1, 1997
    Assignee: The Singer Company N.V.
    Inventors: Masanori Mizunuma, Shinji Kojima
  • Patent number: 5609115
    Abstract: A buttonhole closing device for a lockstitch bar tacking sewing machine comprises a feed plate for holding the buttonhole of a sewn product thereon, an arch clamp frame which is supported by the feed plate on the side thereof so as to be vertically swingable, a first and a second movable clamp feet which are swingably connected to the arch clamp frame by way of pins separately and which are arranged on the left and right sides of a center clamp foot at the clamp portions formed at the front ends thereof respectively, a clamp foot unit driving mechanism, pin portions and cam portions for converting the longitudinal movement of the clamp foot unit driving mechanism into the lateral swinging of the first and second movable clamp feet and driving units for driving the clamp foot unit driving mechanism forward or backward.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: March 11, 1997
    Assignee: The Singer Company N.V.
    Inventors: Masanori Ayuta, Koichi Nakayama, Katsuo Hiratsuka
  • Patent number: 5596942
    Abstract: In a sewing device for feeding a sewn product through a given gap defined between the feeding surface of a sewing machine table and forward feeding members provided above the feeding surface, a sewn product supporting member for carrying the sewn product thereon is provided under the feeding members on the feeding side of the sewn product and a vertically driving unit for vertically moving the sewn product supporting member between the height of the feeding surface and that below the same is attached thereto. When the sewn product supporting member is lifted, the front end portion of the sewn product is brought into close contact with the feeding members uniformly and certainly. The feeding members subsequently feed the sewn product toward the feeding surface of the sewing machine table with certainty without rolling in or pulling the front end portion of the sewn product. As a result, it is possible to efficiently fabricate a sewn product of even and high quality.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: January 28, 1997
    Assignee: The Singer Company N.V.
    Inventors: Hiroshi Kojima, Nobuo Baba
  • Patent number: 5579708
    Abstract: A mask sewing device comprises a pair of sewing machines which are fixed to a working table, being arranged left and right thereon in such a way as to face each other, and are operated in synchronism with each other, a pair of belts provided apart from each other on the working table by a given interval, each belt extending between the mask cloth feeding side and mask cloth sending-out side of the working table and a feeding unit for driving the belts in the normal and reverse directions, wherein the sewing machines can concurrently sew the folded end portions of the mask cloth at both sides thereof respectively, the mask cloth being inserted into the interval from the feeding side.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: December 3, 1996
    Assignee: The Singer Company N.V.
    Inventors: Tetsuo Kambara, Hiroshi Kojima
  • Patent number: 5531172
    Abstract: There is provided an auxiliary bed device for an overlock machine in which sewing of cylindrical workpieces, such as cuffs and bottom edges of pants legs, and pouches as well as flat ones can be performed only by manually sliding the auxiliary bed against the free arm, thereby a change-over of the auxiliary bed being considerably efficient when sewing of cylindrical and flat workpieces are carried out alternately.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: July 2, 1996
    Assignee: The Singer Company N.V.
    Inventors: Shinji Kojima, Koichi Nakayama
  • Patent number: 5529003
    Abstract: A rolled hem switching device comprises a lower knife mounting base which is arranged below a throat plate and is adjustably movable in a lateral direction by way of a laterally moving mechanism provided on a sewing machine frame, a moving pawl which slidably engages a guide groove extending in a cloth feeding direction on a side surface of the lower knife mounting base, a presser member which is fixed to the lower knife mounting base and slidably supports a side surface of the moving pawl and which comprises a horizontal slit of a given length for projecting a projecting portion of the moving pawl therethrough and a lower knife which is fixed to a side surface of the lower knife mounting base at a front side of the presser member for slidably supporting a side surface of the moving pawl.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: June 25, 1996
    Assignee: The Singer Company N.V.
    Inventors: Shinji Kojima, Norio Tezuka
  • Patent number: 5529005
    Abstract: A towel cloth drawing-out device comprises a pair of working tables facing each other with a gap therebetween, a towel cloth drawing unit for drawing out the towel cloth from the towel material to hang the same in the gap, a towel cloth clamp member which is provided in the gap and is able to reciprocate in the drawing direction of the towel cloth, a driving unit for reciprocating the towel cloth clamp member and a vertical wall which is provided on the side of one of the working tables, the working table being disposed on the drawing side of the towel cloth, for clamping the same between the towel cloth clamp member and itself.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: June 25, 1996
    Assignee: The Singer Company N.V.
    Inventors: Kenichi Saotome, Yuji Ohoshima
  • Patent number: 5499590
    Abstract: A thread guide holder device comprises a thread guide holder which is mounted on a spool stand base and has thread guides each for guiding a thread therethrough, wherein the thread guide holder is mounted on the spool stand base by way of damping materials. As a result, it is possible to restrain the oscillation of the thread guide holder during sewing operation so as to smoothly draw out the threads through the thread guides of the thread guide holder and consequently prevent irregular stitches and restrain an eye-offensive oscillation of the thread guide holder.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: March 19, 1996
    Assignee: The Singer Company N.V.
    Inventors: Makoto Kamewada, Shinji Kojima
  • Patent number: 5493799
    Abstract: A steam press for pressing fabric is disclosed. The press includes a piston pump which draws water out of a water reservoir and forces the water into a water inlet port of the press. The pump is operated by a direct current motor which is coupled to the piston of the pump by a drive shaft. The piston is caused to slide back and forth by means of first and second relays coupled between a source of direct current and the motor. The first and second relays apply, respectively, direct voltage of a first polarity and a second reverse polarity to the motor.
    Type: Grant
    Filed: January 26, 1994
    Date of Patent: February 27, 1996
    Assignee: The Singer Company N.V.
    Inventor: Man Y. Foo
  • Patent number: 5481995
    Abstract: In a bar tacking stitch pattern comprising lateral stitches formed in a sewn product in such a way as to cover the starting and ending portions of overedge chain stitches which are formed on the periphery of a button hole in the direction substantially at right angles to the extending direction thereof and zigzag stitches which cross the lateral stitches, a pair of stitches of the zigzag stitches are formed on both sides of an end portion of the button hole adjacent thereto in such a way as to be substantially symmetrical with regard to the button hole and a pair of stitches of the lateral stitches are formed on both sides of the end portion of the buttonhole adjacent thereto outside the area between a pair of line segments which respectively extends through the pair of stitches of the zigzag stitches in the extending direction of the button hole.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: January 9, 1996
    Assignee: The Singer Company N.V.
    Inventors: Katsuo Hiratsuka, Masanori Ayuta, Koichi Nakayama
  • Patent number: 5477795
    Abstract: A thread trimming device for a lockstitch bar tacking sewing machine is equipped with a thread trimming unit comprising a detecting member which is rotatably supported by a sewing machine body and has a detecting portion, a first position detecting means which is fixedly mounted on said sewing machine body in such a way as to be capable of facing the detecting portion of the detecting member and which produces a thread trimming signal for starting thread trimming when the detecting portion approaches thereto and a driving unit for driving a thread trimming cam link in such a way as to bring the contact portion of a thread cam link in contact with the cam surface of a thread trimming cam for trimming a needle and a bobbin threads based on the thread trimming signal. As a result, the mechanical components thereof becomes simple in structure and easy in adjustment, and those relating to the thread trimming operation are improved in durability.
    Type: Grant
    Filed: February 9, 1994
    Date of Patent: December 26, 1995
    Assignee: The Singer Company N.V.
    Inventors: Koichi Nakayama, Katsuo Hiratsuka, Masanori Ayuta
  • Patent number: 5476052
    Abstract: A bed structure for an overlock machine comprises a fixed bed formed by connecting an extension bed to a portion of the front side of a main bed, a substantially box-shaped free arm cover transversely slidably and removably disposed contiguously with a main frame beside a throat plate so as to cover a looper; and a substantially U-shaped auxiliary bed having a front portion, a side portion and a rear portion, disposed so as to surround all sides of of the free arm cover excluding one side of the free arm cover adjacent to the main frame with the front portion thereof inserted in a gap between the extension bed and the free arm cover and with the end surfaces of the lower wall and the lower side wall of the side portion thereof in contact with the side surfaces of the main frame and joined to the extension bed with a horizontal land portion formed in the surface of the front portion thereof fitted in a horizontal groove formed in the corresponding surface of the extension bed so as to be transversely movable r
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: December 19, 1995
    Assignee: The Singer Company N.V.
    Inventors: Shinji Kojima, Masanori Mizunuma, Koichi Nakayama
  • Patent number: D376605
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: December 17, 1996
    Assignee: The Singer Company N.V.
    Inventor: Ming C. Chung
  • Patent number: D377359
    Type: Grant
    Filed: June 16, 1995
    Date of Patent: January 14, 1997
    Assignee: The Singer Company N.V.
    Inventors: Don M.-C. Chung, Robert S. Turnbull
  • Patent number: D377360
    Type: Grant
    Filed: June 16, 1995
    Date of Patent: January 14, 1997
    Assignee: The Singer Company N.V.
    Inventors: Don M.-C. Chung, Robert S. Turnbull
  • Patent number: D377361
    Type: Grant
    Filed: June 16, 1995
    Date of Patent: January 14, 1997
    Assignee: The Singer Company N.V.
    Inventors: Don M.-C. Chung, Robert S. Turnbull