Mechanism for producing stitched patterns in a zigzag sewing mac

Details Mechanism for producing stitched patterns in a zigzag sewing mac Mechanism for producing stitched patterns in a zigzag sewing mac

1986-01-14

1987-09-08

Schroeder, Werner H.

Sewing

Stitch forming

Zigzag

D05B 302, D05B 306

Patent

active

046916555

ABSTRACT:
In a zigzag sewing machine, a mechanism for producing stitched patterns includes a shaft carrying a first group of pattern cams and a second group of pattern cams rotatable by a drive shaft and having different speed reduction ratios. Two followers movable by a pattern selecting dial via a pattern selecting shaft are engageable with the cams of the first and second cam group, respectively. It is possible to select patterns by a control of an actuating pawl which is carried out by operating an independently provided selecting dial. The stitched patterns of the conventional reduction ratio may be controlled without changing their size.

REFERENCES:
patent: 2517079 (1950-08-01), Birdsall
patent: 3792673 (1974-02-01), Bianchi
patent: 4077341 (1978-03-01), Kasuga
patent: 4428311 (1984-01-01), Sano
patent: 4643120 (1987-02-01), Hanyo et al.

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