Material presser device for a sewing machine

Details Material presser device for a sewing machine Material presser device for a sewing machine

1984-09-07

1985-11-05

Schroeder, Werner H.

Sewing

Elements

Presser devices

D05B 2704, D05B 2902

Patent

active

045506710

ABSTRACT:
A material presser device on a sewing machine, includes a presser foot which is attached to a vertically movable presser bar and to which lift movements are imparted by a swing mechanism driven by the main shaft acting through a knee-joint transmission which, in its extended position, extends substantially in the movement direction of the presser bar. For positive connection of the presser foot with the swing mechanism, the presser bar is articulated via an intermediate pitman to one end of the connecting rod of a four-joint transmission. The other end of the four-joint transmission is connected by a connecting rod with an abutment which applies under the action of a spring, against a counter abutment secured to the housing. The connecting rod is connected to the knee joint transmission, the knee joint of which is connected to the sewing machine.

REFERENCES:
patent: 4058071 (1977-11-01), Dunn et al.
patent: 4067275 (1978-01-01), Willenbacher
patent: 4422398 (1983-12-01), Dusch
patent: 4487145 (1984-12-01), Vollmar

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