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1. 发明专利

JPH08187377A SEWING MACHINE FOR CHAIN STITCH 失效
公开(公告)号：JPH08187377A
公开(公告)日：1996-07-23
申请号：JP1848995
申请日：1995-01-10
申请人： JUKI KK
发明人： KINOSHITA KATSUTOSHI
IPC分类号： D05B1/06 , D05B1/10 , D05B49/04
摘要： PURPOSE: To smoothly take out a sewn object after the end of sewing at the time of performing chain stitch not to form idle chain stitch in the state of no object to be sewn by providing a member absorbing the sag of a needle thread operating only when the sewing machine is reversely rotated from near a bottom dead center of a needle bar. CONSTITUTION: When taking out the sewn object after the end of sewing in the case of performing chain stitch not to form idle chain stitch in the state of no object to be sewn, this sewing machine is stopped in the state of turning a needle bar to a bottom dead center position and then rotated backward. Then, since thrust torque is always applied to a thread bringing-up arm 4 by a wavy clip plate 7, the thread bringing-up arm 4 is turned backward in an arrow direction together with the backward rotations of a driving shaft 3. On the other hand, the amount of a needle thread 1 to be supplied is made maximum at the bottom dead center position of the needle bar and a needle thread loop is almost formed by the sag of the needle thread 1, for which the amount to be supplied is made maximum, between a needle hole and the sewn object because of the elevation of the needle bar. However, a probe 4a elevated by the turn of the thread bring-up arm 4 catches and brings up the needle thread 1, the sag is absorbed and the state of forming no needle thread loop is kept.

2. 发明专利

JPH08187378A LOCK SEWING MACHINE 失效
公开(公告)号：JPH08187378A
公开(公告)日：1996-07-23
申请号：JP1849095
申请日：1995-01-10
申请人： JUKI KK
发明人： KINOSHITA KATSUTOSHI , OKUDA KAZUHIRO , KURODA MIKIO
IPC分类号： D05B1/10 , D05B1/20 , D05B63/00
摘要： PURPOSE: To respectively control the bobbin thread of double chain stitch and a lower looper thread with one member in the lock sewing machine with which double chain stitch and linking stitch can be performed. CONSTITUTION: This lock sewing machine is provided with a looper thread take-up 4 equipped with tension thread guards 4a and 4b at left and right L-bent end parts and supported at the bent parts by an upper looper driving shaft 11 and respective thread guides 6 and 7 respectively provided near the extended line of the right side end part at the time of setting the looper balance 4 at the most left and most right points of swinging.

3. 发明专利

JPH04263897A NEEDLE THREADING DEVICE OF SEWING MACHINE 失效
公开(公告)号：JPH04263897A
公开(公告)日：1992-09-18
申请号：JP7734691
申请日：1991-02-19
申请人： JUKI KK
发明人： KINOSHITA KATSUTOSHI
IPC分类号： D05B87/02
摘要： PURPOSE:To prevent the generation of damage of parts even if a user executes an erroneous operation by constituting the device so that a threading work to a needle eye of a needle of a sewing machine can be executed simply. CONSTITUTION:The device is provided with a threading hook 12 which can be moved into a needle eye from a home position by a manual operation, and a member 14 which works by interlocking with a rotation of a sewing machine, and also, prevents the threading hook 12 from moving to the needle eye except the time when a needle bar 16 is in a position being suitable for threading. Also, in addition thereto, threading to the needle eye of the left and the right threads 13 is selected by sliding the upper part of a threading arm 20 which has the threading hook 12 in the tip and hangs down along a left and right needle switching device 19 installed horizontally by positioning the left side in the rear a little.

4. 发明专利

JP2000192363A UPPER DECORATING YARN CONTROL MECHANISM OF SEWING MACHINE 失效
公开(公告)号：JP2000192363A
公开(公告)日：2000-07-11
申请号：JP36881998
申请日：1998-12-25
申请人： JUKI KK
发明人： KINOSHITA KATSUTOSHI
IPC分类号： D05B35/06 , D05C7/08
摘要： PROBLEM TO BE SOLVED: To provide the upper decorating yarn control mechanism of a sewing machine, capable of improving the commercial value of a sewed product and capable of providing the sewed product in excellent profitability by forming circular seams with a looper and plural needles arranged in parallel to each other so that the heights of the tips of the needles will be different from each other, and further by surely guiding the upper decorating yarn with a fixed yarn guide and a spreader for guiding the upper decorating yarn on the upper sewing surface of a cloth. SOLUTION: In this sewing machine, an upper decorating yarn is guided on the upper sewing surface of a cloth with a fixed yarn guide reciprocated from a movement- starting point to a direction orthogonal to a clot-transferring direction and with a spreader for catching the upper decorating yarn connected to a seam and then guiding the caught yarn to needles, and then sewed. Therein, a movable yarn guide 42 for forcibly moving the upper decorating yarn is disposed in the pathway of the upper decorating yarn connected to the fixed yarn guide and the seam, so that the upper decorating yarn connected to the fixed yarn guide at the upper death points of the needles and to the catching portion of the spreader will pass only below the lower tip of the needle near to the movement-starting point of the spreader.

5. 发明专利

JPH10179971A NEEDLE PLATE OF SEWING MACHINE 失效
公开(公告)号：JPH10179971A
公开(公告)日：1998-07-07
申请号：JP35701696
申请日：1996-12-26
申请人： JUKI KK
发明人： KINOSHITA KATSUTOSHI
IPC分类号： D05B1/20 , D05B73/12
摘要： PROBLEM TO BE SOLVED: To enable satisfactory edge darning, flat sewing and double loop sewing while enabling effectively and satisfactorily empty loop sewing by a sheet of a needle plate. SOLUTION: By providing reciprocably a change-over plate 31 for changing the shape of a needle dropping hole 21, the rear region of the needle dropping hole 21 is opened/closed so that the stitching operation such as edge darning and flat sewing which is impossible unless the needle dropping hole 21 is opened is satisfactorily carried out, while in the double loop sewing, particularly empty loop sewing, the rear region of the needle drooping hole 21 in the rear side of the cloth feeding direction is closed to display satisfactorily the holding function of an empty loop holder 7.

6. 发明专利

JPH10118362A HEMMING SEWING MACHINE 失效
公开(公告)号：JPH10118362A
公开(公告)日：1998-05-12
申请号：JP29579196
申请日：1996-10-17
申请人： JUKI KK
发明人： KINOSHITA KATSUTOSHI , OKUDA KAZUHIRO
IPC分类号： D05B1/08 , D05B1/20 , D05B73/12
摘要： PROBLEM TO BE SOLVED: To enable hemming, flat sewing and double ring sewing without ex changing a needle panel. SOLUTION: A needle falling point 4RH used commonly to hemming sewing, flat sewing and double cross stitching is formed between a slide piece 22 for a string for hemming sewing and a guiding needle 21 for roll sewing on a needle panel 25. Thereby hemming sewing, flat sewing and double cross stitching can be carried out at the same needle position and changing of the sewing feature can be enabled without exchanging a needle panel 25.

7. 发明专利

JPH1099569A BALANCE SEWING DEVICE 失效
公开(公告)号：JPH1099569A
公开(公告)日：1998-04-21
申请号：JP27719696
申请日：1996-09-27
申请人： JUKI KK
发明人： KINOSHITA KATSUTOSHI , TAMAGAWA YOSHIAKI
IPC分类号： D05B1/08 , D05B1/10
摘要： PROBLEM TO BE SOLVED: To enable decorative stitches to parallel stitches by detachably providing a balance forming means which forms balance by interlocking fancy yarn with two needle threads in loops for the frame of a sewing machine capable of forming two parallel lines of stitches with at least two needle threads. SOLUTION: When performing lock stitches with balance, first, a mounting arm approximately horizontally extended from a gear box 5, which is a balance forming device to a lock stitch sewing machine, is positioned and fixed on the machine frame of the sewing machine. Second, the recessed groove 11a of a driving arm 11 extended from the gear box 5 is fitted over an engaging pin 12 erected on a side wall of a needle clamp 4. Next to this, when starting lock stitches after predetermined threading, a spreader 2 is rocked with the vertical movements of a needle bar 3 that two needles 1 are arranged in parallel on the needle clamp 4 and a separate balance thread is interlocked with regular lock stitches that interlocks needle threads with bobbin threads from the surface of a fabric as decorative stitches to obtain lock stitches with balance stitches.

8. 发明专利

JPH1094688A STITCH FORMING METHOD FOR MAIN SEWING MACHINE 失效
公开(公告)号：JPH1094688A
公开(公告)日：1998-04-14
申请号：JP27170196
申请日：1996-09-20
申请人： JUKI KK
发明人： KINOSHITA KATSUTOSHI , TAMAGAWA YOSHIAKI
IPC分类号： D05B1/08
摘要： PROBLEM TO BE SOLVED: To remarkably widen the purpose of use of main sewing by providing main sewing with upper decorative sewing by supplying an upper decorative thread from the front side of fabric so as to hang it on a spreader and forming main sewing stitches while entangling the upper decorative thread with both upper threads formed on two main sewing stitches in the shape of loop. SOLUTION: Concerning the forming process of stitches with upper decorative sewing, first of all, when a needle bar a little rises from the lower dead point position of the needle bar as shown in the figure (a), a spreader 2 scoopes an upper decorative thread B as shown in the figure (b). In such a state, the needle bar comes to the upper dead point position as shown in the figure (c) and next, when the needle bar a little falls from the lower dead point position, a needle 1 scoopes the upper decorative thread B as shown in the figure (d) and entangles the upper decorative thread B mutually between two upper threads A and A in the shape of loop. Thus, the different upper decorative thread B is entangled from the surface of fabric as decorative sewing in respect to ordinary main sewing to entangle upper and lower threads and non- conventional main sewing with upper decorative sewing can be provided.

9. 发明专利

JPH0796088A METHOD FOR FORMING SEAM OF DOUBLE CHAIN STITCH SEWING MACHINE AND DEVICE THEREFOR 失效
公开(公告)号：JPH0796088A
公开(公告)日：1995-04-11
申请号：JP24432993
申请日：1993-09-30
申请人： JUKI KK
发明人： KINOSHITA KATSUTOSHI
IPC分类号： D05B1/10 , D05B47/00 , D05B49/02 , D05B51/00
摘要： PURPOSE:To provide the method and the device for forming a seam of the double chain stitch sewing machine which can follow expansion and contraction of cloth, and also, can form a seam having a soft swelling of a good touch called a balloon stitch of a high quality. CONSTITUTION:This device is constituted by providing a needle bar thread take-up lever 28 operated by interlocking with a needle bar 27 allowed to execute freely a reciprocating motion in the vertical direction, and a thread tightening position control member 45 in which the cam face 49 enabling to tighten a needle thread 18 is formed at a position immediately after a looper scoops a needle thread loop by following the reciprocating motion of the needle bar thread take-up lever 28.

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