发明名称 |
Four-step buttonhole mechanism for sewing machines |
摘要 |
A sewing machine buttonholing mechanism is disclosed wherein feed balance between buttonhole side stitches is attained by positioning of buttonholing cam means rather than by the balance control of the driven cam controlled feed mechanism, and zero feed during bar tacking is independently set and uninfluenced by side stitch equalization.
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申请公布号 |
US4577575(A) |
申请公布日期 |
1986.03.25 |
申请号 |
US19850778654 |
申请日期 |
1985.09.23 |
申请人 |
THE SINGER COMPANY |
发明人 |
STEVENS, VICTOR G.;HUANG, PAO-TER |
分类号 |
D05B19/00;(IPC1-7):D05B3/06 |
主分类号 |
D05B19/00 |
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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