发明名称 |
Looper control apparatus for sewing machines |
摘要 |
A looper control apparatus for sewing machines which are adapted to form seams of double chain stitches both in a forwardly and reverse direction of sewing. The apparatus includes first and second driving devices for effecting travel of the looper in an elliptical pathway while sewing in a forwardly direction. A disconnecting mechanism is effective upon a selection to sew in a reverse direction in deactivating the second driving device so that the looper is actuated only by the first driving device which causes it to travel in a rectilinear pathway on one side only of the machine's needle.
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申请公布号 |
US4220102(A) |
申请公布日期 |
1980.09.02 |
申请号 |
US19790045906 |
申请日期 |
1979.06.06 |
申请人 |
ROCKWELL-RIMOLDI SPA |
发明人 |
DRAGHICCIO, PIETRO;VILLA, ENRICO |
分类号 |
D05B57/32;D05B57/02;(IPC1-7):D05B1/06;D05B1/10 |
主分类号 |
D05B57/32 |
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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