Sewing – Stitch forming – Zigzag
Patent
1990-05-24
1991-03-12
Nerbun, Peter
Sewing
Stitch forming
Zigzag
112153, 112275, 112306, 112314, D05B 302
Patent
active
049984934
ABSTRACT:
An edge tracing sewing machine includes a reciprocable needle bar having a needle at a lower end, a forward feed driving device for feeding a work fabric in a sewing direction, a lateral feed driving device for feeding the work fabric in a lateral direction perpendicular to the sewing direction, a tracing width setting device for setting a tracing width from the edge of the work fabric to the needle in the lateral direction, a fabric-edge sensor movable in the lateral direction for detecting an edge of the work fabric, a fabric-edge position detector for detecting a position of the fabric-edge sensor, and a control device. The control device moves the fabric-edge sensor in the lateral direction to make the fabric-edge sensor follow the edge of the work fabric. The control device controls the lateral feed driving device based on the tracing width set by the tracing width setting device and the position of the fabric-edge sensor detected by the fabric-edge position detector. The control device stops a reciprocation of the needle bar and forward and lateral feeding operations of the forward and lateral feed driving devices when the fabric-edge sensor does not detect the edge of the work fabric.
REFERENCES:
patent: 4722288 (1988-02-01), Nomura et al.
patent: 4736699 (1988-04-01), Dobner et al.
patent: 4869189 (1989-09-01), Horie et al.
Brother Kogyo Kabushiki Kaisha
Nerbun Peter
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