Thread Cutting, Severing Or Breaking Patents (Class 112/285)
  • Patent number: 8739714
    Abstract: A method for operating a chain stitch sewing machine and a chain stitch sewing machine, the chain stitch sewing machine having a pair of sewing members comprising a needle which pierces a sewing material and a gripper disposed below a sewing material rest, which can be moved along a movement path, where an upper thread is guided with the needle through the sewing material resting on the sewing material rest, which is linked to a lower thread. The lower thread is fed to a retaining element and is held in said element that is moved with regard to its direction of movement and/or speed of movement to the sewing material rest according to a movement path of a pivoting movement of the gripper in particular along a circular-arc-segment-shaped movement path.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: June 3, 2014
    Assignee: Nahmaschinenfabrik Emil Stutznacker GmbH & Co. KG
    Inventor: Harmut Klapp
  • Publication number: 20130152838
    Abstract: A pulling device is configured to grip, after cutting of a sewing material, a suitable portion of the sewing material by means of a grip member, where a leading end portion of the sewing material having been pulled out from a guide device, and pull back the sewing material by movement of the grip member having the sewing material gripped thereby. Thus, the leading end portion of the sewing material, pulled out and extending from the guide device more than necessary, can be minimized to a length necessary for the sewing material to be reliably sewn onto a sewing object at an initial stage of a next sewing operation. In this way, it is possible to minimize a length of a portion of the sewing material that was heretofore wasted without being sewn onto the sewing object.
    Type: Application
    Filed: December 19, 2012
    Publication date: June 20, 2013
    Applicant: TOKAI KOGYO MISHIN KABUSHIKI KAISHA
    Inventor: TOKAI KOGYO MISHIN KABUSHIKI KAISHA
  • Publication number: 20130025517
    Abstract: A multi-needle sewing machine includes needle bars, presser feet, a support member configured to support the needle bars such that the needle bars can move up and down, a cutting member, a guide member configured to move between an extended position and a stand-by position, and a holding member configured to hold an end portion of a upper thread, the holding member including a fixed member that is mounted to the support member, movable members each of which is provided for one of the needle bars, and includes a guide portion formed by cutting a notch in an outer end portion on the needle bar side of the movable member, and elastic members each of which is provided for one of the movable members and configured to elastically energize the one of the movable members toward the fixed member.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 31, 2013
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Shinya FUJIHARA
  • Publication number: 20120234221
    Abstract: The activation for a path and time related motion of a thread cutting and lead-in stitching unit (7) and the thread brake (25) occurs by a cam drive driven by the primary shaft (9) and a cam drum (75) arranged on the upper shaft (17). This way, an absolute synchronization of the elements of the thread cutting and lead-in stitching unit (7), the thread brake (25), and the hook as well as the needle is ensured.
    Type: Application
    Filed: March 14, 2012
    Publication date: September 20, 2012
    Applicant: BERNINA INTERNATIONAL AG
    Inventors: Severin Brunner, André Stucki
  • Patent number: 8141902
    Abstract: An airbag (10) has a vent hole (18) in one side end portion. One end of a third base fabric (20) is sewn to the airbag (10) through a first sewn portion (23) that closes the vent hole (18), and the other end of the third base fabric 20 is sewn to the other side end portion of the airbag (10) through a second sewn portion (24). The first sewn portion (23) has weaker binding force by sewing than the second sewn portion (24) so that the first sewn portion (23) is separated to open the vent hole (18) when tension force is applied from the third base fabric (20) to the first and second sewn portions (23) and (24).
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: March 27, 2012
    Assignees: Mazda Motor Corporation, Ashimori Industry Co., Ltd
    Inventors: Toshihiro Ishikawa, Naoki Yamaji, Tomoki Hashizume, Kazuhiko Soemoto, Keisuke Moritani
  • Patent number: 8028633
    Abstract: A sewing machine capable of embroidery sewing includes a plurality types of embroidery frames which hold a workpiece cloth; a carriage that has the embroidery frame detachably attached thereto by sliding the embroidery frame in a predetermined direction; a frame moving unit that moves the carriage in two directions intersecting in a horizontal plane; a control unit that controls the frame moving unit; a detection that detects a type of embroidery frame attached to the carriage; an operation instructing portion that allows a user to instruct movement of the embroidery frame to a predetermined position suitable for attachment/detachment of the embroidery frame, the operation instructing portion outputting a movement instructing signal to the control unit when operated; and a validating unit that validates operation of the operation instructing portion provided that an attachment of a specific type of embroidery frame is detected by the detection mechanism.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: October 4, 2011
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Takafumi Naka, Yasuhiro Watanabe
  • Patent number: 8020502
    Abstract: The thread cutting device of a sewing machine provides a first thread catching member having a first thread catching portion for catching a thread positioned between the horizontal shuttle and the needle hole and carrying out forward and backward movements below the throat plate while the first thread catching portion catches the thread, a second thread catching member having a second thread catching portion for catching the thread laid between the needle hole and the first thread catching portion and guiding the thread caught by the first thread catching member to a fixed blade and to cut the thread by the fixed blade.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: September 20, 2011
    Assignee: Juki Corporation
    Inventor: Tsuyoshi Hanada
  • Patent number: 7997614
    Abstract: Intended is to always provide effective impact reduction by releasing gas at a timing of pushing into airbag. An airbag (10) has a vent hole (18) in one side end portion. One end of a third base fabric (20) is sewn to the airbag (10) through a first sewn portion (23) that closes the vent hole (18), and the other end of the third base fabric 20 is sewn to the other side end portion of the airbag (10) through a second sewn portion (24). The first sewn portion (23) has weaker binding force by sewing than the second sewn portion (24) so that the first sewn portion (23) is separated to open the vent hole (18) when tension force is applied from the third base fabric (20) to the first and second sewn portions (23) and (24).
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: August 16, 2011
    Assignees: Mazda Motor Corporation, Ashimori Industry Co., Ltd.
    Inventors: Toshihiro Ishikawa, Naoki Yamaji, Tomoki Hashizume, Kazuhiko Soemoto, Keisuke Moritani
  • Publication number: 20100319598
    Abstract: A sewing machine includes upper and lower beams. A thread hooking mechanism is mounted in the lower beam. A needle plate base is mounted to an end of the lower beam. A transmission shaft rotatably extends in the lower beam and has an end extending into the needle plate base. The transmission shaft can be driven by a power source. A driving device is mounted to the end of the lower beam and includes a transmission shaft rotatably received in the needle base plate, a transmission gear fixed on the end of the transmission shaft, a driven shaft rotatably received in the needle base plate and having an end coupled to the thread hooking mechanism, and a driven gear fixed on the driven shaft and connected to the transmission gear, with the driven shaft and the thread hooking mechanism rotating at a speed higher than the transmission shaft.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 23, 2010
    Inventor: Hsien-Chin Chang
  • Publication number: 20100307400
    Abstract: A stationary thread-cutting device for a sewing machine includes a guiding member and a cutter. The guiding member is mounted on a needle plate, and has a major wall defining a thread guiding route. The guiding route includes a lead-in area having an entry slot to permit entry of a leading end of a bobbin thread, a turn-around area for guiding the leading end, a corner piece disposed at the turn-around area, and a cutting station disposed adjacent to a lateral edge of the needle plate to define a lead-out path with the corner piece. The cutter is disposed under the major wall and adjacent to the cutting station, and has a cutting blade. After the bobbin thread is advanced beyond the cutting station, the bobbin thread is cut, thereby ensuring that a predetermined length of the bobbin thread is available for initial interlacing with a needle thread in a sewing operation.
    Type: Application
    Filed: June 5, 2009
    Publication date: December 9, 2010
    Applicant: Zeng Hsing Industrial Co., Ltd.
    Inventors: Shui-Chun Tseng, Chi-Chang Lan
  • Patent number: 7827923
    Abstract: In a sewing machine having an automatic thread cutting mechanism, a situation of a thread cutting operation is detected in power-OFF to continuously carry out a proper operation when a power supply is turned ON again after sudden power-OFF. In a sewing machine having an automatic thread cutting mechanism, there is provided means for detecting an operation situation of the automatic thread cutting mechanism when a power supply is turned ON. Based on a signal for the detection, the automatic thread cutting mechanism is operated to complete a thread cutting operation and to carry out a control to return into an initial state when a stop is performed with the thread cutting mechanism in power-ON executing the thread cutting work.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: November 9, 2010
    Assignee: Janome Sewing Machine Co., Ltd.
    Inventors: Mikio Koike, Koji Okutani, Eiji Kanno, Hideaki Kambara, Masashi Ninomiya, Eiichi Shomura, Satoshi Maruo, Mitsuru Nishijima, Michio Hisatake
  • Publication number: 20100126397
    Abstract: A sewing machine having a threading path defined at a sewing machine head and being engaged with a needle thread to guide the needle thread in threading a sewing needle; a thread holder provided on the threading path and that includes a thread holding plate receiving the needle thread being introduced from outer to inner peripheral side of the thread holder to clamp the needle thread; a thread cutter provided on a faceplate covering the head and that cuts off a needle thread tip sequentially engaged with the threading path; a threader unit that passes the needle thread through a needle eye; and a passage resistance applier provided downstream relative to the thread holder and upstream relative to the thread cutter and that applies a predetermined amount of resistance on the needle thread passing therethrough to introduce the needle thread to the inner peripheral side of the needle holding plate.
    Type: Application
    Filed: October 22, 2009
    Publication date: May 27, 2010
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Shinya Fujihara
  • Publication number: 20100126396
    Abstract: The invention relates to a chain stitch sewing machine comprising stitch-forming sewing elements including at least one needle head (1) and needles (6) arranged on the needle head and at least one gripper shaft and gripper hooks arranged on the gripper shaft, wherein the needles (6) and the gripper hooks respectively form a sewing element pair and are driven in a manner such as to perform preferably chain stitches and especially double chain stitches in a sewing material arranged on a sewing material support, respectively using a needle thread and a gripper thread.
    Type: Application
    Filed: November 17, 2009
    Publication date: May 27, 2010
    Applicant: Nähmaschinenfabrik Emil Stutznäcker GmbH & Co. KG
    Inventor: Klaus Stutznäcker
  • Publication number: 20100071604
    Abstract: In a presser foot and a sewing machine according to the present invention, a guide hole is formed in a presser leg to which a fixed knife is attached, so as to passing through the presser leg up and down, and a knife holder is fitted and held to the guide hole. The fixed knife is inserted to a retention groove provided in a peripheral surface of the knife holder through a window hole provided in the presser leg, and is fixed by fastening a stop screw. A position of the fixed knife is adjusted in a vertical direction by moving the knife holder in the vertical direction along the guide hole and fastening the stop screw at an appropriate position, thereby changing a cut position of ends of fabrics and changing an overlapped width of the fabrics at a time of seaming.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 25, 2010
    Inventor: Ryuichiro KINOSHITA
  • Publication number: 20090229502
    Abstract: A sewing thread spool having thread locking and cutting functions is disclosed. The sewing thread spool comprises a winding core having an outer rim at one end and a bobbin at one end of the core, with a thread cutting plate arranged on an end plane of the bobbin. The bobbin comprises a thread-passing notch arranged at the end with the thread cutting plate. The thread cutting plate comprises a first and a second bayonet sockets separated from each other, the first bayonet socket cooperating with the thread-passing notch to produce a tension in a thread, and the second bayonet socket being used for cutting the thread and fixing the thread end. The thread spool is beneficial in that it cuts the thread and locks it to the spool.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 17, 2009
    Inventor: Jem Nich
  • Publication number: 20090211505
    Abstract: A thread cutting device of a sewing machine is provided. The thread cutting device cuts a thread extending between a horizontal shuttle and a throat plate of the sewing machine. The thread cutting device includes a fixed blade, a first thread catcher, a second thread catcher, a driving assembly which moves the first and second thread catchers such that the first thread catcher catches the thread before the second thread catcher catches the thread and pulls the thread toward the fixed blade to cut the thread, and a guide member disposed between the first thread catcher and the driving assembly. The guide member guides the first thread catcher from an advanced position to a thread catching position to catch the thread, and further guides the first thread catcher from the thread catching position to a standby position to turn the first thread catcher toward the fixed blade.
    Type: Application
    Filed: February 19, 2009
    Publication date: August 27, 2009
    Applicant: JUKI CORPORATION
    Inventor: Tsuyoshi HANADA
  • Publication number: 20090126611
    Abstract: One embodiment of the present invention relates to a system for thread handling (e.g., separating) and/or cutting. Another embodiment of the present invention relates to a method for thread handling (e.g., separating) and/or cutting. In one example, the present invention may be used in connection with sewing machines, embroidery machines, quilting machines and the like.
    Type: Application
    Filed: March 14, 2008
    Publication date: May 21, 2009
    Inventor: Alberto Landoni
  • Patent number: 7513202
    Abstract: A system, apparatus and method for stitching are described. One embodiment includes a sewing head including a needle; an arm assembly that is disposed relative to the sewing head so as to allow a garment to be placed between the sewing head and the arm assembly; and a non-planer needle plate coupled to the arm assembly that includes an aperture that is disposed so as to allow the needle to project through the aperture after the needle has moved through the garment.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: April 7, 2009
    Assignee: Melco Embroidery System
    Inventors: James E. Graf, Dale A. Zoetewey, Joseph A. Keating, Howard A. Roepnack
  • Publication number: 20090071385
    Abstract: A thread cutting device of a sewing machine cuts a thread below a throat plate through which a needle is inserted. The thread cutting device includes a first thread catcher operable to catch the thread, a second thread catcher operable to catch the thread caught by the first thread catcher, a fixed blade operable to cut the thread caught by the second thread catcher, a driving portion which drives the first thread catcher and the second thread catcher such that the second thread catcher catches the thread caught by the first thread catcher and guides the thread toward the fixed blade, an attaching member to which the fixed blade is fixed and into which the second thread catcher is slidably inserted from above over the fixed blade, and a cover which covers the second thread catcher from above to restrict an upward movement of the second thread catcher.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 19, 2009
    Applicant: JUKI CORPORATION
    Inventor: Tsuyoshi HANADA
  • Publication number: 20080302288
    Abstract: The present invention relates to a method and an apparatus for operating a thread-processing machine having a thread-cutting device. In order to provide a method and a corresponding apparatus for operating a thread-processing machine having a thread-cutting device, which achieves improved results with increased operational reliability in comparison with known apparatuses and methods, it is proposed that the processed product (3) is covered with an articulated or flexible protective element to protect the surface of the sewn product in a region around a thread (2) which is to be severed only after the thread-processing operation is ended, and the thread-cutting device (4) is moved onto a cutting point and is positioned for cutting relative to the protective element.
    Type: Application
    Filed: July 28, 2006
    Publication date: December 11, 2008
    Inventor: Andreas Ecker
  • Publication number: 20080250995
    Abstract: The thread cutting device of a sewing machine provides a first thread catching member having a first thread catching portion for catching a thread positioned between the horizontal shuttle and the needle hole and carrying out forward and backward movements below the throat plate while the first thread catching portion catches the thread, a second thread catching member having a second thread catching portion for catching the thread laid between the needle hole and the first thread catching portion and guiding the thread caught by the first thread catching member to a fixed blade and to cut the thread by the fixed blade
    Type: Application
    Filed: April 11, 2008
    Publication date: October 16, 2008
    Applicant: JUKI CORPORATION
    Inventor: Tsuyoshi Hanada
  • Publication number: 20080229989
    Abstract: A thread cutting device includes a thread catching member having a catching portion, wherein the thread catching member moves back and forth across a path of a lower thread reeled out from a bobbin so as to catch the lower thread by the catching portion and cuts the lower thread by cooperating with a fixed knife, a first power transmitting portion which transmits a power to the thread catching member, a first cam member provided on a lower shaft rotated by a sewing machine motor and transmits a first moving force to the thread catching member through the first power transmitting portion, a second power transmitting portion which transmits a second moving force from a stepping motor to the thread catching member through the first power transmitting portion.
    Type: Application
    Filed: October 2, 2007
    Publication date: September 25, 2008
    Inventor: Atsushi Shiraishi
  • Patent number: 7380511
    Abstract: Disclosed is an automatic thread cutting device for a sewing machine which is provided with a horizontal loop taker, wherein a thread catching member (4) is operated in response to a thread cutting instruction to reciprocatingly move with a movable blade (5) along a predetermined course, the thread catching member (4) normally catching the upper thread when moving in the return-way of reciprocation to guide the upper thread to a fixed blade (14) which is provided to cut the upper thread in cooperation with the movable blade (5), and wherein a thread regulating means is provided to cut the lower thread (29d) together with the upper thread, the thread regulating means being operated to press down the lower thread (29d) to a position where the lower thread (29d) is caught by the thread catching member (4) in addition to the upper thread when the thread catching member (4) is moving in the return-way of reciprocation.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: June 3, 2008
    Assignee: Janome Sewing Machine Co., Ltd.
    Inventors: Mikio Koike, Koji Okutani, Eiji Kanno, Hideaki Kambara, Masashi Ninomiya, Eiichi Shomura, Satoshi Maruo, Mitsuru Nishijima, Michio Hisatake
  • Patent number: 7357089
    Abstract: The present invention is an automatic thread cutting device for a sewing machine, which is equipped with an automatic thread cutting device on the position that a needle thread passes through. The automatic thread cutting device comprises a main body that is equipped with a worm gear rod of active piece actuated by a motor of driving piece, wherein the active piece is engaged with a worm gear denture of passive piece that motivates a thread hooking member, a knife base with a knife is fixed on the main body and cooperates with the thread hooking member to cut a needle thread. Thus the size of the whole device can be minimized effectively to fit in the small space of a sewing machine, and then the objective of effort-saving and fast thread cutting is attained.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: April 15, 2008
    Inventor: Tseng Hsien Chang
  • Patent number: 7353762
    Abstract: The present invention provides a cordless device for removing a single layer of stitches from a fabric. The cordless device comprising a body having a top end and a bottom end. At the top end of the body is a blade having a plurality of upper teeth and a plurality of lower teeth for cutting the layer of stitches to be removed from the fabric. Inside of the body is a high powered motor for actuating the blade in a back and forth motion across the layer of stitches being cut. A cordless power source, such as a battery, is positioned inside the body to provide power to the motor.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: April 8, 2008
    Inventor: Peggy Mathis
  • Publication number: 20040154507
    Abstract: A sewing machine includes a head on which a needle bar for fixing a needle is mounted, a thread cutting blade mounted in the head so as to be capable of cutting an end of a thread which is threaded so as to be passed through an eye of the needle, and a holder mounted in the head so as to be capable of holding the thread end after the thread end has been cut by the thread cutting blade. The thread cutting blade is positioned so that a first amount of thread from the eye of the needle mounted in the head to the thread end held by the holder equals a second amount of thread by which the thread end is drawn to an underside of a cloth in a stitch formed immediately after start of a sewing operation.
    Type: Application
    Filed: January 15, 2004
    Publication date: August 12, 2004
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasukazu Noguchi, Yasuhiko Kawaguchi, Masato Kato
  • Publication number: 20030183146
    Abstract: A sewing machine includes a needle plate having a needle hole through which a sewing needle is allowed to pass, a thread catcher reciprocally moved forward and backward below the needle plate and being elongated in a moving direction, the thread catcher having a frontward end with respect to a direction of forward movement of the thread catcher and including first and second generally hook-shaped catching portions, and a cutting blade located between the first and second catching portions at least during backward movement of the thread catcher to cut a thread caught between the first and second catching portions. The first catching portion is located nearer to the frontward end of the thread catcher than the second catching portion with respect to the moving direction of the thread catcher during forward movement of the thread catcher.
    Type: Application
    Filed: March 12, 2003
    Publication date: October 2, 2003
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Shuichiro Usa
  • Publication number: 20020069802
    Abstract: A thread cutter for use in a sewing machine with a rotating hook (12) has a surface cam (60) which, together with a cam follower (58), controls the movement path of a pivotable thread catcher lever (26), which grasps the thread with a thread catcher (30, 36) and severs it at a cutter (82). With known solutions the surface cam is seated on the main shaft of the machine, which results in space-consuming structures with a large amount of parts. It is therefore proposed to connect the surface cam (60) in a torsion-proof manner with the hook (12) and to provide arresting means (38) which, only during a revolution of the hook (12) with the needle raised, maintain the thread catcher lever (26) radially outside the engagement range of the surface cam (60) and only with definite triggering release the thread catcher lever (26) with a cam follower (58) for contact with the surface cam (60).
    Type: Application
    Filed: November 6, 2001
    Publication date: June 13, 2002
    Inventors: Peter Hintzen, Rolf Kessler
  • Publication number: 20020066397
    Abstract: A sewing apparatus includes a thread cutting mechanism that cuts a thread connected to a work cloth. In response to an operation of an operating member and detachment of a sewing cartridge from a sewing apparatus body, the thread cutting mechanism is actuated. The thread cutting mechanism includes a thread cutting lever, a link mechanism, cutting blades, and an engagement mechanism.
    Type: Application
    Filed: December 5, 2001
    Publication date: June 6, 2002
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Toshiyuki Mamiya, Akira Terao
  • Publication number: 20020062775
    Abstract: The invention relates to a process and a device for adjusting clearing limits, defects in the yarn being cut out and a clearing limit separating defects which are to be cut out from defects which are not to be cut out. To achieve an improved, simplified and rapid adjustment of the clearing limit so the effect thereof in the end product can also be predicted more accurately, starting from the clearing limit, displays of defects in the end product are to be produced which make an effect of the defects in the end product visible.
    Type: Application
    Filed: November 28, 2001
    Publication date: May 30, 2002
    Inventor: Robert Hoeller
  • Patent number: 5826775
    Abstract: A new Sock Clip System for securing stocking, socks, and hose and the like, into their proper pairs for ease of sorting for laundry and storage. The inventive device includes a clip inserting mechanism having a handle for inserting a resilient clip into clothing, a slot projected into the handle, and a blade secured within the slot within the handle for cutting the resilient clip preparing the secured clothing for utilization. In an alternative embodiment, the blade may be removably secured to the handle by a U-shaped member having a flange with slidably projects into a T-slot within the handle.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: October 27, 1998
    Inventors: Linda Mooney, Lynette Jennings
  • Patent number: 5722335
    Abstract: A thread cutting device of a sewing machine comprising a groove defined in a sewing machine, the groove extending back and forth and having an opening at a back end thereof, a plurality of thread cutting blades having inclined grooves along which each piece of thread cutting blades can be broken off every given interval, wherein a tip end of each thread cutting blade is disposed to across an intermediate portion of the groove, and the each thread cutting blade is fixed to the sewing machine by way of a detachable fixing means.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: March 3, 1998
    Assignee: The Singer Company N.V.
    Inventors: Makoto Kamewada, Shinji Kojima
  • Patent number: 5555832
    Abstract: A method for manufacturing hosiery items, termed "top-to-top" method, and the related modified knitting and stitching machines. The method includes the following steps: knitting a first hosiery item starting from a top down to a toe; knitting at least one row of trim at the end of the toe; knitting a second hosiery item at the end of the row of trim starting from a second toe up to a second top; separating and stitching the first and second hosiery items initially joined by the trim row by means of a specifically modified stitching machine. The stitching machine includes two independent stitching units which are fed by a common conveyor which is provided with a cutter and with diverging traction means. Top-to-top knitting can be performed with appropriately modified mechanically-programmed machines or with electronically programmed machines.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: September 17, 1996
    Assignee: Conti Complett S.p.A.
    Inventor: Andrea Conti
  • Patent number: 5009177
    Abstract: A thread cutting unit cooperating with the bed of a sewing machine includes a lower shaft, a cutting knife and a loop spreading plate respectively fixed to the lower shaft and positioned adjacent to the hook. The thread cutting knife and the loop spreading plate cross each other in a space between the hook and the throat plate. The thread cutting unit is provided with a thread cutting driving unit which comprises a thread cutting knife driving shaft, a loop spreading plate driving shaft, a rotational motion transmission device, a thread cutting supporting member carrying thread cutting knife, a first turnable interlocking mechanism and a second turnable interlocking mechanism. The thread cutting supporting member is rotatably supported on the bed.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: April 23, 1991
    Assignee: SSMC Inc.
    Inventors: Shuichi Sato, Yoshimi Koguchi, Yoshiharu Kobayashi
  • Patent number: 5005504
    Abstract: A thread-cutting device for zigzag sewing machines for forming uniformly short thread ends regardless of the top stitch position of the last stitch. The thread cutter 28 is movable in a plane that is parallel to the thread catcher 33 and is connected by a drive unit 45 through 58 having stop sections 54, 55 to the drive of the thread catcher 33 such that the thread catcher can be moved, together with the cutter, into the cutting position located below the center of the stitch hole. While the thread cutter 28 stops in the cutting position, the thread catcher completes the thread separation process. The thread cutter 28 is moved back during the return movement of the thread catcher 33 only after the threads have been cut. The drive unit 45 through 58 for the thread cutter 28 is of positive-locking design, as a result of which even thick threads are cut reliably. The thread cutting device is particularly suitabloe for installation (even subsequent installation) in stitch group zigzag sewing machines.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: April 9, 1991
    Assignee: G. M. Pfaff Aktiengesellschaft
    Inventors: Ernst Alblrecht, Harald Dinges
  • Patent number: 4984727
    Abstract: The filament cutter comprises a shank (1) with a head (2) and a substantially cylindrical portion (4), applied against the head (2) by a spring (5). In the space (7,8) is disposed a cutting member (9), having notched recesses and so arranged that a filament engaged between the member (4) and the head (2) will come into engagement with the notches so as to be cut.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: January 15, 1991
    Assignee: Mefina S.A.
    Inventor: Antonio Jimenez
  • Patent number: 4949658
    Abstract: A tape feeding device comprises a binder arrangement for bending shape tape so that the bent portion thereof extends longitudinally. The binder includes a first binder for guiding a base of the tape and a second binder for bending the tape in a predetermined shape while guiding a tip end of the tape. A cutting unit is disposed between the first and the second binders to cut the tape. A tape feeding mechanism feeds the tape from the first binder to the second binder after the tape is cut by the cutting unit.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: August 21, 1990
    Assignee: SSMC Inc.
    Inventor: Hideyuki Kobayashi
  • Patent number: 4917051
    Abstract: A sewing machine capable of simulating hand stitching. The machine comprises a throat plate (101), a needle passage region (104) through the throat plate, a needle (2), upper and lower needle holders (4, 5) for driving the needle between a raised position lying wholly above the throat plate and a lowered position lying wholly below the throat plate, and thread-control drum and looper (9, 11) lying below the throat plate. A thread-guide tube (26) is located above the throat plate for guiding supplied thread so that a section thereof lies in a first thread path. A first clamp (33, 34) is operable to releasably clamp the thread adjacent to a free end thereof when lying in said first thread path.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: April 17, 1990
    Assignee: Automated Machinery Systems, Inc.
    Inventor: Mason S. Small
  • Patent number: 4796552
    Abstract: An apparatus for positioning a chain of stitches for stitching onto material in a sewing machine having a cutting device, and a first blower for positioning the chain of stitches forwardly of the needle. The apparatus has a second blower for placing the chain in the path of the cutting device.
    Type: Grant
    Filed: May 18, 1987
    Date of Patent: January 10, 1989
    Assignee: Union Special Corporation
    Inventor: Maximilian Adamski, Jr.
  • Patent number: 4655152
    Abstract: A thread clamp for sewing machines comprises a helical spring as a clamping element which is disposed in a bore extending crosswise to the feed direction of the work in a guide piece placed on the stitch plate. To obtain a very short closing path, the helical spring has in the region of the respective thread pull-off path windings whose mutual distance is greater than in the other regions. The helical spring is compressible by a setting drive for the fixed clamping of the threads.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: April 7, 1987
    Assignee: Pfaff Industriemaschinen GmbH
    Inventors: Eugen Angele, Ludwig Drechsel
  • Patent number: 4582009
    Abstract: A thread trimming mechanism including a pair of knives for severing thread disposed therebetween. The knives are magnetically attracted to each other such that a cooperative cutting relationship is maintained therebetween.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: April 15, 1986
    Assignee: Union Special GmbH
    Inventor: Gunter H. Rohr
  • Patent number: 4117789
    Abstract: The disclosure relates to the automatic refilling of a bobbin spool, in a lock stitch type sewing machine, in the interval between the loading of work units. After sewing of a predetermined work unit, consisting of a single workpiece, or several workpieces, a premeasured thread length on the bobbin spool is exhausted. While the machine operator places a new work unit in position for sewing, the mechanism of the invention refills the empty bobbin spool, in situ, with a precisely measured length of bobbin thread, drawn from an effectively continuous supply source. The mechanisms provided for this purpose, in and of themselves generally known, are arranged in an improved, simplified and more compact arrangement, suitable for incorporation in a variety of commercial lock stitch type sewing machines available to the trade.
    Type: Grant
    Filed: September 14, 1977
    Date of Patent: October 3, 1978
    Assignee: Automatech Industries, Inc.
    Inventors: Herman Rovin, Lawrence J. Levine, Theodore Opuszenski, Joseph Pellicano, Alan F. Swenson