发明名称 Buttonhole foot and shank assembly
摘要 A presser foot with a grooved sole plate for use in the formation of buttonholes on a sewing machine is pivotally mounted on a screw with which the foot can be moved laterally relative to the shank to position a groove dividing ridge with respect to a sewing needle.
申请公布号 US4494471(A) 申请公布日期 1985.01.22
申请号 US19840581832 申请日期 1984.02.21
申请人 THE SINGER COMPANY 发明人 ZYLBERT, THADDEUS J.
分类号 D05B29/08;D05B29/06;(IPC1-7):D05B29/08 主分类号 D05B29/08
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