Workpiece detector for a sewing machine

Details Workpiece detector for a sewing machine Workpiece detector for a sewing machine

1987-05-26

1989-07-18

Reynolds, Wm. Carter

Sewing

Elements

Presser devices

112272, 112277, D05B 2900, D05B 3500

Patent

active

048482560

ABSTRACT:
A workpiece detector for a sewing machine including a rotatable detecting lever in which small angular displacements at the end of the detecting lever, caused by differences in workpiece thickness, are multiplied mechanically causing the rotation of an electrical converter. Detectable output signals are generated such that overlapping of workpieces or the end of a workpiece may be detected during stitching. The length of the detecting lever is adjustable such that the detecting point may be varied.

REFERENCES:
patent: 3968760 (1976-07-01), Rovin et al.
patent: 4337713 (1982-07-01), Palacino et al.
patent: 4363281 (1982-12-01), Reinke
patent: 4615287 (1986-10-01), Henze et al.

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