Looper driving assembly for a sewing machine

Details Looper driving assembly for a sewing machine Looper driving assembly for a sewing machine

1996-09-20

1997-09-09

Izaguirre, Ismael

Sewing

Stitch forming

Chain or double chain

112162, D05B 5734

Patent

active

056645090

ABSTRACT:
A driving assembly includes a shaft pivotally supported in a sewing machine. A rod is movable up and down and includes a looper secured on top. A follower is secured to the shaft and includes a post. A block is slidably engaged on the post and includes a pivot axle pivotally coupled to the rod for moving the rod up and down. The block is adjusted along the rod for adjusting the distance between the pivot axle and the shaft and for adjusting a moving stroke of the looper. The rod and the looper are stopped when the pivot axle is moved to coincide with the shaft.

REFERENCES:
patent: 971229 (1910-09-01), Weis
patent: 3881434 (1975-05-01), Kelly
patent: 4543896 (1985-10-01), Desantis
patent: 4690080 (1987-09-01), Mikuni et al.
patent: 5237942 (1993-08-01), Satoma
patent: 5255622 (1993-10-01), Baba et al.

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