Sewing machine four motion speed

Details Sewing machine four motion speed Sewing machine four motion speed

1986-07-15

1987-12-22

Falik, Andrew M.

Sewing

Stitch forming

Feeding work material

D05B 2702

Patent

active

047140402

ABSTRACT:
A main feed bed of a feeding mechanism of a sewing machine of a swinging lever type is provided with a sub-feed bed which is swingable with respect to said main feed bed and is integrally secured with a feed dog. Both feed beds are connected and controlled by respectively independent vertical feed cams, so that a moving locus of the feed dog is made square while keeping the upper surface of the feed dog parallel with the upper surface of a needle plate.

REFERENCES:
patent: 3527183 (1970-09-01), Szostak
patent: 4199995 (1980-04-01), Murakami
patent: 4419951 (1983-12-01), Ruch et al.
patent: 4469039 (1984-09-01), Marchesi

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