Presser foot device on a sewing machine

Details Presser foot device on a sewing machine Presser foot device on a sewing machine

1983-11-09

1985-04-02

Hunter, H. Hampton

Sewing

Elements

Presser devices

D05B 2902

Patent

active

045080437

ABSTRACT:
A presser foot device on a sewing machine has a swingingly driven foot which can be shifted by two compressed air cylinders and piston combination and a spring mechanism into an inoperative position and, for adaptation to different work thicknesses, into a plurality of operating ranges, each with a different height position but constant amplitude of oscillation.

REFERENCES:
patent: 4323020 (1982-04-01), Thompson
patent: 4381722 (1983-05-01), Takeuchi et al.

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