发明名称 Device for automatically threading a sewing machine
摘要 A device for threading the stitch forming instrumentalities of a sewing machine from a thread supply up to a sewing needle. A lever is pivotally mounted in the sewing machine frame and is located at the sewing head which when pulled outwardly, thread, which has been placed across the lever, is drawn into a loop and is urged, by the lever, into a tension device, into a thread take-up lever, and under a check spring assembly.
申请公布号 US4241678(A) 申请公布日期 1980.12.30
申请号 US19790069133 申请日期 1979.08.23
申请人 SINGER CO THE 发明人 TULLMAN, EDWARD J
分类号 D05B53/00;D05B51/00;(IPC1-7):D05B47/00 主分类号 D05B53/00
代理机构 代理人
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