Feed mechanism for sewing machine

Details Feed mechanism for sewing machine Feed mechanism for sewing machine

1985-07-09

1987-06-23

Hunter, H. Hampton

Sewing

Stitch forming

Feeding work material

112314, D05B 2702

Patent

active

046744266

ABSTRACT:
A lifting rocker which is pivotally supported by a link is engaged with an eccentric ring which is fixed to a main shaft of a sewing machine. By the rotation of the eccentric ring, the lifting rocker rocks up and down about a fulcrum defined by the link while causing the link to rock. A feed bar having thereon a feed dog is slidably supported by the lifting rocker, and moves in back and forth directions through the rocking of the arm to constantly maintain a definite amount of feed without respect to variation of the rotational speed of the main shaft of the sewing machine.

REFERENCES:
patent: 2102202 (1937-12-01), Ebert
patent: 2341448 (1944-02-01), Knaus
patent: 2771848 (1956-11-01), Knaus et al.
patent: 4469039 (1984-09-01), Marchesi

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