Sewing – Stitch forming – Feeding work material
Patent
1988-11-07
1989-12-26
Falik, Andrew M.
Sewing
Stitch forming
Feeding work material
112260, D05B 2714
Patent
active
048890626
ABSTRACT:
A sewing machine capable of producing embroidery stitches on a workpiece which in general require the workpiece to be shifted relative to a needle in a lateral direction as well as a longitudinal direction. The sewing machine has first and second vertical extending presser bars provided at their lower ends with press rollers. The presser bars are spring-biased downwardly so that the press rollers exert downwardly directing pressure onto the workpiece. First and second feed rollers are arranged within a workpiece supporting table of the sewing machine, in opposition to the press rollers respectively. The first feed rollers are rotated by a first drive motor to feed the workpiece in the lateral direction, whereas the second feed rollers are rotated by a first drive motor to feed the workpiece in the longitudinal direction, thereby feeding the workpiece in any direction in a desired amount. The workpiece feeding amounts in both directions are separately controlled in response to stitch control data stored for the selected stitch pattern. Sequential control for each stitch will produce desired embroidery stitches.
REFERENCES:
patent: 3727567 (1973-04-01), Beazley
patent: 4019447 (1977-04-01), Blessing et al.
patent: 4303027 (1981-12-01), Vemura et al.
patent: 4467737 (1984-08-01), Breck, Jr.
patent: 4602583 (1986-07-01), Hanyu
Falik Andrew M.
Janome Sewing Machine Industry Co. Ltd.
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