| TOKAI KOGYO MISHIN KABUSHIKI KAISHA Patent applications |
| Patent application number | Title | Published |
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| 20110290167 | SEWING MACHINE WITH SEQUIN FEEDER DEVICE - A cutting mechanism for cutting off a leading sequin from a continuous sequin strip in response to sewing operation is constructed to cut off the sequin at substantially the same time as a sewing needle pierces a sewing workpiece. For example, the cutting mechanism includes a movable cutter blade, and an abutting member that, in response to sewing operation, abuts against the movable cutter blade to move the movable cutter blade in a predetermined direction so that the sequin is cut off by the movable cutter blade. The abutting member is provided in a presser foot that presses down the sewing workpiece in interlocked relation to the sewing needle during the sewing operation. | 12-01-2011 |
| 20110253021 | SEWING MACHINE - A guide is mounted to a rotary member which is freely rotatable about the axis of a needle bar, and guides a sewing material to a needle drop position of the sewing needle. A cutter device is mounted to a side of the rotary member opposed to the guide in such a manner that the cutter device is rotatable together with the rotary member for cutting the sewing material, having been paid out from the guide, at a predetermined cutting position. A retention mechanism is incorporated in the cutter device for retaining an end portion of the sewing material, at a position closer to the guide than the predetermined cutting position and in interlocked relation to cutting, by the cutter device, of the sewing material. Thus, upon restart of sewing of the sewing material, the retention mechanism retains an end portion of the sewing material. | 10-20-2011 |
| 20110192332 | SEQUIN FEEDER APPARATUS - The present invention has a support member which rotatably supports a reel by supporting the outer periphery of the reel at least two positions and a posture restriction member (a pair of wall members or press roller) which restricts a posture of the reel supported by the support member. As another example, the reel is rotatably held in the hold member, and the hold member is supported by the support member and its posture is restricted by the posture restriction member. As still another example, the reel is arranged between a pair of wall members and the reel is pivotally supported by inserting the support member which has a support shaft which is suitable to be inserted detachably in an insertion hole provided in at least a pair of wall members. | 08-11-2011 |
| 20110146550 | CONSTRUCTION OF VERTICAL FULL ROTARY HOOK FOR SEWING MACHINE - An inner rotary hook has a needle drop hole, and side wall portions formed over the drop hole and defining a space for passage therethrough of a sewing needle. The side wall portions are located adjacent to opposite sides of the needle passing through the space and extend from a region in front of the needle to a region behind the needle. The side wall portions can abut against an upper thread, passed through a hole of the needle, near a bottom dead point of the needle. If any of two portions of the thread located forward and rearward of the needle has strayed laterally, it can abut against one of the wall portions. Consequently, it is possible to prevent the front-side upper thread portion from circling around behind the needle, but also prevent the rear-side upper thread portion from straying laterally to form a laterally-protruding loop. | 06-23-2011 |
| 20110113998 | SEWING MACHINE - A guide member is moved in interlocked relation to a rotary member rotating about the axis of a needle bar, so that a string-shaped material paid out from a bobbin is guided to a needle drop position of a sewing needle. The bobbin having the string-shaped material wound thereon is supported by a support member that is rotatable generally about the axis of the needle bar and disposed over a machine table in such a manner as to not hamper movement of an embroidery frame. The bobbin can be positioned at a distance from a machine head; thus, bobbins of increased sizes can be used. The support member is controlled in orientation, by means of a drive source, in accordance with rotation of the rotary member. The bobbin itself revolves around the machine head, which allows the string-shaped material to be constantly appropriately guided to the needle drop position. | 05-19-2011 |
| 20090314192 | ROTARY HOOK DRIVE DEVICE AND MULTI-HEAD SEWING MACHINE - Rotary hook drive device for a sewing machine includes: a rotary hook rotatably provided on a rotary hook support; a cylindrical grooved cam provided on a drive shaft drivable to rotate in one direction; a cam follower engaged in a cam groove of the cylindrical grooved cam and capable of making reciprocative movement about a support shaft in response to rotation of the cylindrical grooved cam; and a transmission mechanism that transmits the reciprocative movement of the cam follower to the rotary hook to cause the rotary hook to make reciprocative pivoting movement. Such arrangements can prevent deviation in driving timing of the rotary hook and simplify the construction of the rotary hook drive device. | 12-24-2009 |
| 20090173261 | EMBROIDERY SEWING MACHINE - In a head group comprising two or more machine heads ( | 07-09-2009 |
| 20090126610 | MULTI-HEAD SEWING MACHINE AND METHOD OF CONTROLLING OPERATION OF MULTI-HEAD SEWING MACHINE - A balancer is fixedly attached to a rotary input shaft of a crank mechanism that converts rotary drive of a needle bar drive source to up-and-down motion of a needle bar. The balancer is caused to rotate at substantially an opposite phase with respect to up-and-down motion of the needle bar with the rotary drive of the needle bar drive source. When the balancer is driven at substantially the opposite phase with respect to the up-and-down motion of the needle bar, inertia force in an up-and-down direction of the needle bar, generated due to the up-and-down motion of the needle bar is negated, whereby it is possible to reduce vibration generated in the up-and-down direction. Sewing heads paired with each other by being arbitrarily combined are controlled so as to be rotationally driven to cause rotational directions of the needle bar drive sources to become opposite directions to each other. | 05-21-2009 |
| 20090071384 | EMBROIDERY FRAME SUPPORT DEVICE - In an embroidery sewing machine, an embroidery frame support device for supporting a front end portion of an embroidery frame installed in a cantilevered manner includes: a base member that is a base for attaching the embroidery frame support device to the embroidery sewing machine, and a Y slide rail (support member) having a movable end that can move relatively with the base member. The embroidery frame support device supports a front end portion of the embroidery frame from a lower surface thereof through an X slide rail attached to a tip portion of the Y slide rail. The embroidery frame support device can be attached to the embroidery sewing machine by screwing a base member to a cylinder bed. The screwing of the base member to the cylinder bed can be carried out from the upper side of a sewing machine table. | 03-19-2009 |
| 20090064912 | EMBROIDERY SEWING MACHINE AND EMBROIDERY-START-POSITION SETTING METHOD - Trace process (i.e. process for moving an embroidery frame from a desired start position on the basis of outline data of an embroidery pattern) is performed. It is detected, during the movement, whether the moving embroidery frame has reached a predetermined movement limit position. When detected, a protrusion amount, from the embroidery frame, of a remaining outline portion is calculated on the basis of a current position of the outline data and the remaining portion. On the basis of the calculated protrusion amount, the start position is reset by being positionally displaced so as to avoid occurrence of the protrusion. In this way, setting a start position such that the embroidery pattern does not protrude beyond a movable range of the embroidery frame can be performed in a short time. | 03-12-2009 |
| 20090038519 | CHAIN-STITCH SEWING MACHINE - Chain-stitch sewing machine includes: a looper provided under a needle plate and having a thread lead-in port and thread lead-out port, the looper being rotationally driven in synchronism with a sewing operation; a plurality of thread feed ports connecting to different thread supply sources; and a connecting member having a thread passage, the connecting member selectively connecting any one of the plurality of thread feed ports to the thread insertion port of the looper via the thread passage. Threading mechanism passes the sewing thread, fed via the thread feed port connected by the connecting member to the thread insertion port of the looper, into the thread insertion port and causes the sewing thread to be taken out via the inserted thread lead-out port of the looper. | 02-12-2009 |
| 20080302287 | EMBROIDERY SEWING MACHINE AND CONTROL METHOD THEREFOR - First calculation section calculates, on the basis of sewing data, a sewing-progressing direction angle for rotating a rotary cylinder to orient an embroidering material, guided by a guide lever of a zigzag sewing head, in a sewing-progressing direction. Second calculation section adds or subtracts a zigzag-swinging angle to or from the sewing-progressing direction angle to thereby calculate a target rotational angle of the rotary cylinder. Swinging mechanism may be provided for swinging the guide lever relative to the rotary cylinder, and a swinging amount corresponding to the swinging angle of the rotary cylinder may be added to a width of zigzag-swinging by the swinging mechanism. Alternatively, every swinging movement necessary for zigzagging the embroidering material may be set by the swinging angle without the guide lever being caused to swing relative to the rotary cylinder. | 12-11-2008 |
| 20080264316 | Sequin Feeder Apparatus - Sequin strip ( | 10-30-2008 |
