Feed direction and stitch length cam for zigzag sewing machine

Details Feed direction and stitch length cam for zigzag sewing machine Feed direction and stitch length cam for zigzag sewing machine

1992-08-06

1994-05-24

Crowder, Clifford D.

Sewing

Stitch forming

Feeding work material

112323, D05B 2722, D05B 2724

Patent

active

053139003

ABSTRACT:
In a domestic sewing machine a feed dog (35) is adjustable for providing optionally selected stitch length and feeding direction and is adapted to be lowered to a position in which the feeding is inhibited. A control (15) is rotatably connected to a cam disk (16) adapted to adjust the feed dog to a selected position. The cam disk has positions corresponding to lowering of the feed dog as well as reversing the feeding direction, and a zone for controlling the stitch length. The control also has a conical portion (30) which in response to an axial movement of the control is adapted to provide a temporary reversal of the feeding direction.

REFERENCES:
patent: 2496817 (1950-07-01), Schulthess
patent: 2526480 (1950-10-01), Hohmann
patent: 2713839 (1955-07-01), Engel
patent: 4391216 (1983-07-01), Hsiao
patent: 4512273 (1985-04-01), Skogward
patent: 4559887 (1985-12-01), Sand
patent: 4756263 (1988-07-01), Sand
patent: 4848254 (1989-07-01), Krowatchek et al.

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