Self-adjusting presser foot for assembler sewing machines

Details Self-adjusting presser foot for assembler sewing machines Self-adjusting presser foot for assembler sewing machines

1992-02-19

1993-04-27

Crowder, Clifford D.

Sewing

Elements

Presser devices

112126, 112127, D05B 2900, D05B 3700

Patent

active

052052311

ABSTRACT:
A presser foot having a shoe comprising a pair of mutually facing front portions (5a, 5b) and a pair of rear portions (6a, 6b) in alignment with the front portions (5a, 5b) and connected thereto by a pair of side rocker arms (7a, 7b). The side rocker arms (7a, 7b) are pivotably supported by swinging arms (10a, 10b) linked to a small bearing frame (2). A center rocking arm (15) mounted on the bearing frame (2) acts by a pair of laterally disposed pistons (17a, 17b) on the individual swinging arms (10a, 10b) in order to mutually balance the fulcra of the side rocker arms (7a, 7b). Operating at a longitudinal opening (29) defined between the front portions (5a, 5b) is a fixed knife (32) and a movable knife (33) which are adjustable independently of each other in their vertical positioning relative to the shoe (4).

REFERENCES:
patent: 4526113 (1985-07-01), Angele

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