Method for initially positioning a traveling buttonhole presser

Details Method for initially positioning a traveling buttonhole presser Method for initially positioning a traveling buttonhole presser

1978-08-11

1980-01-01

Schroeder, Werner H.

Sewing

Elements

Frames

D05B 306

Patent

active

041810872

ABSTRACT:
A method for insuring that a traveling buttonhole presser foot, which is normally spring biased to an initial start position prior to movement of the traveling part thereof during the formation of a buttonhole, is located in the initial start position. As an initial step prior to the formation of the buttonhole, the sewing machine is operated for at least one stitch with the reversible feed regulating system thereof arranged to feed the work material in a direction to relax the biasing spring.

REFERENCES:
patent: 3877403 (1975-04-01), Ketterer
patent: 4091752 (1978-05-01), Oderman
patent: 4096811 (1978-06-01), Marsh
patent: 4109591 (1978-08-01), Rakacs

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