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1.发明公开A method and apparatus for sewing mitered corners on a split needle bar sewing machine 失效缝制方法和装置，在缝纫机上领尖端与两针，其可以独立地被驱动。
公开(公告)号：EP0117713A1
公开(公告)日：1984-09-05
申请号：EP84301132.1
申请日：1984-02-22
IPC分类号： D05B35/10
CPC分类号： D05B69/20 , D05D2205/085
摘要： A semi-automatic split needle bar sewing machine (10) includes a sewing machine (12) which is driven by a motor (26) that drives a left needle (22) and a right neddle (23). A presser foot (24) is operated by presser lift actuator (30). The needles (22) and (23) can activate in unison or independently by use of fall out actuators (41) and (43), respectively. A control chassis (50) includes a microprocessor controller (51) that is programmable through an input panel (44). An edge detector (40) detects the edge of the material to provide feedback for the microprocessor controller(51). The microprocessor controller (51) is operable to sew a decorative pattern with mitered corners by sensing the pivot point of the mitered corner and automatically disangaging one of the needles (22) or (23). The microprocessor controller (51) then continues single needle sewing around the apex of the mitered corner by counting a predetermined number of stitches and varying the length of the stitches such that the needle is in the correct position when the single needle sewing again arrives at the pivot point on the other side of the mitered corner. In this manner, it is not necessary for the operator to manually adjust the length of the stitches around the apex of the mitered corner.
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2.发明授权A method and apparatus for sewing mitered corners on a split needle bar sewing machine 失效一种分离针式缝纫机上接头角的方法与装置
公开(公告)号：EP0117713B1
公开(公告)日：1988-06-15
申请号：EP84301132.1
申请日：1984-02-22
IPC分类号： D05B35/10
CPC分类号： D05B69/20 , D05D2205/085
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3.发明公开A method and apparatus for decelerating and stopping a sewing machine motor 失效用于减慢的速度和停止缝纫机的驱动马达的方法和装置。
公开(公告)号：EP0103364A2
公开(公告)日：1984-03-21
申请号：EP83303879.7
申请日：1983-07-04
CPC分类号： D05B69/26
摘要： A method and apparatus for automatically positioning a reciprocating needle while rotating the motor a minimum number of degrees. Apparatus is provided for sensing the motor angle and comparing it with a preset braking angle. After the braking angle has been reached, the motor is decelerated until it reaches a needle positioning speed, whereupon the motor angle is again sensed and compared to the needle positioning angle. The motor rotates until the needle positioning angle has been reached, whereupon the brake is reapplied to stop the motor at the desired needle position in a minimum time duration without performing an additional stitch.
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4.发明授权
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5.发明公开
公开(公告)号：EP0103364A3
公开(公告)日：1984-09-05
申请号：EP83303879
申请日：1983-07-04
申请人： MICRODYNAMICS, INC.
CPC分类号： D05B69/26
摘要： A method and apparatus for automatically positioning a reciprocating needle while rotating the motor a minimum number of degrees. Apparatus is provided for sensing the motor angle and comparing it with a preset braking angle. After the braking angle has been reached, the motor is decelerated until it reaches a needle positioning speed, whereupon the motor angle is again sensed and compared to the needle positioning angle. The motor rotates until the needle positioning angle has been reached, whereupon the brake is reapplied to stop the motor at the desired needle position in a minimum time duration without performing an additional stitch.
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