Material clamp for sewing machines

Details Material clamp for sewing machines Material clamp for sewing machines

1984-05-23

1985-10-29

Nerbun, Peter

Sewing

Special machines

Buttonhole

112114, D05B 3900

Patent

active

045494924

ABSTRACT:
The cloth clamp comprises a pivot arm provided with a clamp foot, which arm can automatically assume a closed position through a toggle lever drive, a setting lever connected therewith, and an extension spring acting on the setting lever counter to the force of a leaf spring packet acting on the toggle lever drive. An actuating mechanism is needed only for opening the cloth clamp.

REFERENCES:
patent: 1823522 (1931-09-01), Allen
patent: 2510014 (1950-05-01), Faulkner

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