Safety device for pattern selection in zigzag sewing machines

Details Safety device for pattern selection in zigzag sewing machines Safety device for pattern selection in zigzag sewing machines

1979-07-24

1981-01-27

Nerbun, Peter P.

Sewing

Elements

Starting or stopping

112158A, D05B 6922, D05B 302

Patent

active

042468582

ABSTRACT:
A mechanism disposed in a sewing machine for sequentially performing, in regard to an operation of a single manually operable member while the needle being penetrated through a work fabric, shifting of a needle to a predetermined position above the work fabric due to a temporary slight rotation of the main shaft, retracting or withdrawal of a cam follower from tracking on a pattern cam, and transferring of the cam follower from one pattern cam to another. This mechanism virtually assures that during the pattern selection the needle never jogs laterally while the needle is penetrating through the work fabric, whereby the work damage and the needle breakage can surely be prevented.

REFERENCES:
patent: 4078506 (1978-03-01), Sasaki
patent: 4084523 (1978-04-01), Kasuga
patent: 4193362 (1980-03-01), Glaser

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