Sewing machine with a speed correcting unit and an independently

Details Sewing machine with a speed correcting unit and an independently Sewing machine with a speed correcting unit and an independently

1997-11-18

1999-01-19

Nerbun, Peter

Sewing

Special machines

Pattern controlled or programmed

112220, 112275, D05B 1912, D05B 6918

Patent

active

058603778

ABSTRACT:
A sewing machine, with independently driven main shaft and loop taker, stores a table containing preset speed correction values for negating rotational speed variations in the loop taker drive shaft caused by torque variations on the same; sets speed correction amounts based on speed correction values read from the speed correction value table; and outputs correction drive signals indicative of those speed correction values to the loop taker drive motor.

REFERENCES:
patent: 5660129 (1997-08-01), Murata
patent: 5778810 (1998-07-01), Akahane et al.

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