公开(公告)号：EP0345341A1

公开(公告)日：1989-12-13

申请号：EP89901181.0

申请日：1988-12-02

申请人： ATLANTA ATTACHMENT COMPANY

发明人： BURTON, Gene, Jr.

IPC分类号： D05B63 ,  D05B65 ,  D05B75

CPC分类号： D05B65/00 ,  D05B75/00 ,  D05D2207/02

摘要： A thread undercut attachment for use on multi-needle sewing machines uses a single piston (51) to actuate a cutting blade (57) which passes through the sewing area beneath the workpiece and above the loopers. To prevent the needles and loopers from becoming unthreaded or to prevent undue lengths of thread extending from either the work product or the needles after cutting, thread pullers (76 and 91) are provided for creating a measured amount of slack in the threads lead­ ing to the needles and loopers, and thread brakes (66, 71 and 81, 86) hold the threads firmly to prevent further payout of thread when the workpiece is pulled toward the operator and as the threads are cut.