公开(公告)号：US5372079A

公开(公告)日：1994-12-13

申请号：US104702

申请日：1993-08-11

申请人： Koji Kitai ,  Takanori Nakayama

发明人： Koji Kitai ,  Takanori Nakayama

IPC分类号： D05B65/00

CPC分类号： D05B65/00

摘要： A thread trimming device for a sewing machine in which a movable knife coupled to a thread trimmer lever by way of a link mechanism is turned to cut sewing threads in cooperation with a fixed knife, the first projection of the thread trimmer lever engaging in the cam groove of a thread trimmer cam, comprises a thread trimmer positive motion bracket having a second projection capable of engaging in the positive motion cam groove of a thread trimmer positive motion cam so as to keep the engagement of the first projection with the cam groove after the second projection thereof engages the positive motion cam groove until it is disengaged therefrom. Since the time of completing the thread trimming can be set by the positive motion cam groove of the thread trimmer positive motion cam, the timing of the thread trimming can be adjusted with certainty. Furthermore, the operating time of the driving means can be remarkably reduced.

摘要翻译： 一种用于缝纫机的切线装置，其中通过连杆机构联接到切线器杆的可动刀转动以与固定刀协作切割缝纫线，切线器杆的第一突起接合在凸轮中 螺纹修剪器凸轮的凹槽包括一个修剪器正运动支架，其具有能够接合修剪器正运动凸轮的正运动凸轮槽的第二突起，以便在第一凸起与凸轮槽之间的接合之后 第二突起与正运动凸轮槽接合，直到与其分离。 由于可以通过修剪器正运动凸轮的正向凸轮槽来设定修剪完成的时间，所以可以确定地调整修剪的定时。 此外，可以显着地减少驱动装置的操作时间。

公开(公告)号：US4942834A

公开(公告)日：1990-07-24

申请号：US361626

申请日：1989-06-05

申请人： Koji Kitai

发明人： Koji Kitai

IPC分类号： D05B57/02 ,  D05B57/06

CPC分类号： D05B57/06

摘要： The present invention relates to a looper shifting device in an overlock sewing machine having an upper looper and a lower looper and capable of looping the end of the cloth by one needle with use of three threads composed of an upper thread (first thread) in a needle, a second thread in the upper looper, and a third thread in the lower looper. A tip end of a guide passage provided at the upper looper is open to a tip end rear portion of a brade of the upper looper and positioned adjacent to a pore. A horn is retractably inserted in the guide passage. A spreader is defined by the tip end of the horn protruded from the opening and tip end rear portion of the upper looper. There is provided at the side of the upper looper a holding device for holding the base portion of the horn.

摘要翻译： 本发明涉及一种具有上打圈器和下打圈器的包缝机中的弯针移位装置，其能够使用由线圈（第一线）构成的三根线，由一根针环绕布的端部 针，上部弯针中的第二根螺纹，以及下部弯针中的第三根螺纹。 设置在上部弯针上的引导通道的前端对上活套的手臂的前端后部开口，并与孔相邻放置。 喇叭可伸缩地插入引导通道。 扩张器由从上部弯针的开口和末端后部突出的喇叭尖端限定。 在上部弯针的一侧设置有用于保持喇叭的基部的保持装置。

公开(公告)号：US4970976A

公开(公告)日：1990-11-20

申请号：US440840

申请日：1989-11-24

申请人： Koji Kitai ,  Masanori Mizunuma ,  Tatsuo Kikuchi

发明人： Koji Kitai ,  Masanori Mizunuma ,  Tatsuo Kikuchi

IPC分类号： D05B1/20 ,  D05B55/10 ,  D05B57/06

CPC分类号： D05B55/10 ,  D05B1/20 ,  D05B57/06

摘要： There is disclosed an overlock sewing machine. The overlock sewing machine includes a looper switching unit for selecting an overlocking operative state or overlocking inoperative state, a needle clamp member having a first needle holding hole in which two needles are mounted separately in the manner that the two needles are positioned in parallel and a second needle holding hole positioned slightly eccentrically at the front side of the cloth feeding direction and perpendicular to the cloth feeding direction, whereby eight types of overlocking operations and one type of double-loop stitching operation can be effected.

摘要翻译： 公开了一种包缝机。 所述包缝机包括用于选择外锁操作状态或非锁定不工作状态的针刺切换单元，具有第一针保持孔的针夹持构件，其中两针以两针并联的方式分开安装， 第二针保持孔稍微偏心地布置在送布方向的前侧并且垂直于送布方向，由此可以进行八种类型的外锁操作和一种类型的双回路缝合操作。