Work-feed mechanism for a sewing machine

Details Work-feed mechanism for a sewing machine Work-feed mechanism for a sewing machine

1984-03-12

1985-07-09

Schroeder, Werner H.

Sewing

Stitch forming

Feeding work material

112311, D05B 2702

Patent

active

045274983

ABSTRACT:
A work-feed mechanism for a sewing machine, comprising a two-arm actuating lever pivotably supported on a feed dog or on a member movable with the feed dog, and a lower feed needle supported on one of two arms of the lever and movable through a slot in a throat plate, between its lower and upper positions at which the upper end of the needle is below and above the upper surface of the throat plate, upon pivotal movements of the lever. The lever has, at the other arm, a portion adapted to abut on a portion or member provided on the lower surface of the throat plate upon upward movement of the feed dog. The lever is biased in a direction to cause the needle to move toward its lower position.

REFERENCES:
patent: 1770870 (1930-07-01), Windram
patent: 1947380 (1934-02-01), Christensen et al.
patent: 1988400 (1935-01-01), Thompson

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