Motion conversion mechanism for effecting sewing machine feed do

Details Motion conversion mechanism for effecting sewing machine feed do Motion conversion mechanism for effecting sewing machine feed do

1981-11-12

1984-03-06

Nerbun, Peter P.

Sewing

Elements

Driving mechanisms

112158B, 112158E, 112323, D05B 6902

Patent

active

044347359

ABSTRACT:
A sewing machine is described comprising a mechanism arranged to convert movement signals generated by a decoder unit into movements of a feed dog for the fabric with the main characteristic of the machine being that said mechanism comprises a plurality of levers; a selector unit which is controlled by the decoder unit and selects one of said levers, to place this latter in a working position; a member angularly coupled to a control shaft for the dog and angularly positionable in a predetermined angular position by the selected lever; and a dragging element controlled by said decoder unit and arranged to move the member from its predetermined angular position towards an angular reference position.

REFERENCES:
patent: 4086861 (1978-05-01), Ketterer et al.
patent: 4265188 (1981-05-01), Suzuki et al.
patent: 4336762 (1982-06-01), Giolitti

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