Clamping apparatus for automatic sewing machine

Details Clamping apparatus for automatic sewing machine Clamping apparatus for automatic sewing machine

1975-07-03

1977-01-11

Schroeder, Werner H.

Sewing

Special machines

Darning

D05C 904

Patent

active

040021297

ABSTRACT:
Clamping apparatus for an automatic sewing machine comprising, first clamp means for retaining a first work piece, and second clamp means for retaining a second work piece adjacent the first work piece. Means is provided for movably mounting the first and second clamp means for relative movement therebetween with the first clamp means being located intermediate the second clamp means and a work surface. First means is provided for applying a separating force between the first and second clamp means. Second means is also provided for selectively applying a variable force against the second clamp means in a direction urging the second clamp means toward the first clamp means, with the second applying means separately applying forces at levels less than and greater than the separating force.

REFERENCES:
patent: 3513791 (1970-05-01), Fulp
patent: 3742879 (1973-07-01), Schaefer, Jr.
patent: 3776154 (1973-12-01), Weiss
patent: 3794230 (1974-02-01), Bryan et al.

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