Sewing machine stitch regulating mechanisms

Details Sewing machine stitch regulating mechanisms Sewing machine stitch regulating mechanisms

1977-02-28

1978-06-20

Schroeder, Werner H.

Sewing

With tables or stands

For plural sewing units

D05B 2700

Patent

active

040955400

ABSTRACT:
A feed system for an industrial sewing machine having a toggle type stitch regulator. The feet stop for determining forward stitch length is located in the sewing machine frame for direct engagement with the stitch length regulating yoke to reduce vibration and noise in the system. The feed length is adjusted by a knob through a gear train connected through the bed of the machine to the stop abutment so as to allow stitch length adjustment without tipping the sewing machine. An elastomeric dynamic damper is included in the regulating system so that during reverse feed when the regulating yoke is displaced from the stop abutment the damper is effective to reduce vibration and noise that would normally travel through the system to the reversing lever.

REFERENCES:
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patent: 2414652 (1947-01-01), Liniger
patent: 2685266 (1954-08-01), Pagni
patent: 2818039 (1957-12-01), Ayres
patent: 2846966 (1958-08-01), Engel
patent: 3036535 (1962-05-01), Dunn et al.
patent: 3202121 (1965-08-01), Orth et al.
patent: 3368507 (1968-02-01), Orth
patent: 3467040 (1969-09-01), Hacklander
patent: 3834334 (1974-09-01), Adams et al.
patent: 3949691 (1976-04-01), Adams

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