Electronic fancy sewing machine having means for adjusting the d

Details Electronic fancy sewing machine having means for adjusting the d Electronic fancy sewing machine having means for adjusting the d

1986-04-04

1987-07-07

Nerbun, Peter

Sewing

Stitch forming

Zigzag

112315, D05B 302

Patent

active

046779272

ABSTRACT:
The feeding length in a sewing machine depends on the difference between the positions of the feeder when it rises above the stitch plate and when it sinks again. In previous devices the feeder is controlled by the angular position of a guide which is kept constant during the feeding phase. According to the invention the angular position of the guide can be re-adjusted during the feeding movement. At the moment when the feeder rises above the stitch plate the angular position determines a portion of the feeding length, while the angular position at the moment when the feeder sinks again determines the rest of the feeding length.

REFERENCES:
patent: 4191120 (1980-03-01), Bergvall
patent: 4299180 (1981-11-01), Kume et al.
patent: 4563966 (1986-01-01), Sano

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