Automatic thread tensioning device for sewing machines

Details Automatic thread tensioning device for sewing machines Automatic thread tensioning device for sewing machines

1980-06-04

1983-03-29

Nerbun, Peter P.

Sewing

Elements

Tensioning

112158E, D05B 4704

Patent

active

043779808

ABSTRACT:
An automatic thread setting device for electronically controlled material and needle position type sewing machines. The device has pattern selecting means, cloth thickness designating means, upper and lower thread tension adjusting means, and electronic memory means. Selection of a pattern automatically sets the thread tension. Selection of a different pattern automatically resets the tension.

REFERENCES:
patent: 3856233 (1974-12-01), Thomas
patent: 4166423 (1979-09-01), Brienza et al.
patent: 4215641 (1980-08-01), Dobrjanskyj et al.

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