Upper layer feed mechanism in a sewing machine

Details Upper layer feed mechanism in a sewing machine Upper layer feed mechanism in a sewing machine

1980-06-26

1981-08-25

Hunter, H. Hampton

Sewing

Stitch forming

Feeding work material

112314, 112320, 112323, D05B 2706

Patent

active

042852943

ABSTRACT:
An upper layer feed mechanism in a sewing machine is disclosed herein. The upper layer feed mechanism comprises a first interlocking arm secured at one end to a horizontal feed shaft, an upper layer feed shaft rotatably supported on the machine frame of a sewing machine and having a second interlocking arm, a connector rod connecting between the first and second interlocking arms, an adjusting mechanism adjusting the connection between the second interlocking arm and connector rod, a support arm rotatably supported at one end on the machine frame, an upper layer feed arm rotatably supported at one end on the support arm and having an upper layer feed dog at the other end, a connection mechanism transmitting the rocking movement of the upper feed shaft to the support arm, a resilient means normally urging the upper layer feed dog downwardly and a means urging the upper layer feed dog upwardly against the resiliency of the resilient means.

REFERENCES:
patent: 1995945 (1935-03-01), Rubel et al.
patent: 3530809 (1970-09-01), Porter
patent: 3636899 (1972-01-01), Crisler

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