Sewing machine belt feed with variable pitch drive pulley

Details Sewing machine belt feed with variable pitch drive pulley Sewing machine belt feed with variable pitch drive pulley

1984-12-05

1986-06-17

Schroeder, Werner H.

Sewing

Stitch forming

Feeding work material

112314, 474 49, 474 54, 271270, D05B 2704

Patent

active

045949573

ABSTRACT:
A work advancing mechanism for a sewing machine which includes a driven circulatory belt for positively advancing the work beneath the presser foot of the machine. The belt is entrained about and driven by a wheel assembly having an adjustable operative circumference for modulating the lineal advancement rate of the belt.

REFERENCES:
patent: 2782649 (1957-02-01), Shortland
patent: 4417535 (1983-11-01), Hannemann

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