Presser foot control for sewing machines

Details Presser foot control for sewing machines Presser foot control for sewing machines

1982-04-30

1984-06-05

Jaudon, Henry

Sewing

Elements

Presser devices

D05B 2902

Patent

active

044521588

ABSTRACT:
A low-inertia presser device for sewing machines having a coil spring operatively connected to a pivotably mounted arm that carries the machine's presser foot. The spring is housed within a sleeve having a bifurcated end that straddles the arm. A thrust rod protruding from the sleeve has one end in engagement with the coil spring and the opposite end with that portion of the pivotably mounted arm extending through the bifurcated end of the sleeve. The biasing force of the coil spring is effective in minimizing the inertia of the moving parts and is effective in causing the presser foot to precisely and consistently track the movement of the feed dog above the needle plate, resulting in controlled movement of a workpiece in a straight line along the sewing axis.

REFERENCES:
patent: 2419494 (1947-04-01), Knaus
patent: 3796173 (1974-03-01), Godsen
patent: 3933106 (1976-01-01), Murray
patent: 4024826 (1977-05-01), Knight et al.
patent: 4381722 (1983-05-01), Takeuchi et al.

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