Work clamp shifting mechanism for sewing machines

Details Work clamp shifting mechanism for sewing machines Work clamp shifting mechanism for sewing machines

1983-04-27

1984-10-02

Reynolds, Wm. Carter

Sewing

Special machines

Article attaching

112157, 112169, 112254, D05B 314, D05B 9710, D05B 4702

Patent

active

044741235

ABSTRACT:
A work clamp shifting mechanism for a four hole button sewing machine in which operator influenced cam shifts the work holding jaws between two detent retained positions and also releases the thread tension during each shift between detent positions to defer the work from being disoriented in the work holding jaws.

REFERENCES:
patent: Re21016 (1939-02-01), Lyons
patent: 436321 (1890-09-01), Stirckler
patent: 649871 (1900-05-01), Merritt
patent: 3098459 (1963-07-01), Bono

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