Motorized drive for a sewing machine including belt tensioning m

Details Motorized drive for a sewing machine including belt tensioning m Motorized drive for a sewing machine including belt tensioning m

1980-03-17

1980-12-23

Nerbun, Peter P.

Sewing

Elements

Driving mechanisms

474 86, 474113, D05B 6902

Patent

active

042403685

ABSTRACT:
A module including a frame which supports a motor, reduction gearing and a belt driving pulley is mounted in a sewing machine for position adjusting movements in one direction effective to set tension in a shaft timing belt, and position adjusting movements in another direction effective to set tension in a hook shaft timing belt.

REFERENCES:
patent: 2205176 (1940-06-01), Sauer
patent: 2838020 (1958-06-01), Eriksson
patent: 3157142 (1964-11-01), Birch et al.
patent: 3477670 (1969-11-01), Sloyan

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