Sewing – Stitch forming – Zigzag
Patent
1989-08-28
1991-01-22
Nerbun, Peter
Sewing
Stitch forming
Zigzag
D05B 302
Patent
active
049862014
ABSTRACT:
A sewing machine capable of setting a feed pitch of a first stitch on zero in a work piece at the beginning of sewing operation, comprises: a needle reciprocable in a vertical direction and joggable in a lateral direction; a feed means which cooperates with a presser foot in operation in synchronism with the needle for feeding a work piece at a desired rate; a stitch-forming mechanism driven by a main drive motor of the sewing machine; a motor-operation detecting means for detecting operating conditions of the main drive motor; a needle-position detecting means for detecting a position of the needle having been disposed above a throat plate; and a presser-foot position detecting means for detecting a position of the presser foot relative to the throat plate, whereby a feed pitch of the feed means is set on zero at a time when the motor-operation detecting means detects a stopping condition of the main drive motor, so that a condition in which the feed pitch of the feed means is set on zero is held until a subsequent feed-control data is inputted.
REFERENCES:
patent: 4142474 (1979-03-01), Bowles
patent: 4147119 (1979-04-01), Dunn
patent: 4393795 (1983-07-01), Makabe et al.
Hyodo Toru
Sasano Akiyoshi
Janome Sewing Machine Company Limited
Nerbun Peter
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