发明名称 |
LOOPER WHICH ROTATES IN A HORIZONTAL PLANE FOR A DOUBLE LOCK-STITCH SEWING MACHINE |
摘要 |
The bobbin case which is received by the looper has an upstanding generally cylindrical wall which surrounds the looper-thread bobbin. Forming part of the wall is a free-standing finger against which an end of a leaf spring rests. The looper thread, which has been withdrawn from the looper-thread bobbin and wrapped around the finger, is pulled through the constricted place between the leaf spring and the finger and then conducted through a threading slot provided by a radially-extending cam on the outer surface of the wall. The looper thread then comes against an inclined, downward-facing shoulder provided on the outside of the wall, slides down the shoulder, and passes finally into a long horizontal slot in the wall. The looper thread exits the bobbin case at an end point of the horizontal slot for being dependably caught by a thread catcher of a thread-cutting device.
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申请公布号 |
US5189973(A) |
申请公布日期 |
1993.03.02 |
申请号 |
US19910674532 |
申请日期 |
1991.03.22 |
申请人 |
DUERKOPP ADLER AKTIENGESELLSCHAFT |
发明人 |
KRUMME, THOMAS;STROHL, ROBERT;WACHTER, DIETER |
分类号 |
D05B57/04;D05B57/08 |
主分类号 |
D05B57/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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