Thread tensioner

Details Thread tensioner Thread tensioner

1976-12-23

1978-09-05

Schroeder, Werner H.

Sewing

Elements

Tensioning

D05B 4702

Patent

active

041111419

ABSTRACT:
A thread tensioner for a sewing machine has smooth flat, parallel plastic surfaces between which the thread is passed and which can be urged together with variable tension by a cam acting through a spring. One of the surfaces is a part of an inner wall of a box-like housing. The other surface is carried by a hollow block slidable in the housing and containing the spring, and into which the cam projects.

REFERENCES:
patent: 2609772 (1952-09-01), Casas-Robert
patent: 2640662 (1953-06-01), TeStrake
patent: 2838250 (1958-06-01), Staurakis et al.
patent: 2981497 (1961-04-01), Schurich
patent: 2998177 (1961-08-01), Romano
patent: 3722439 (1973-03-01), Newman
patent: 3738298 (1973-06-01), Albrecht
patent: 3937417 (1976-02-01), Guenther

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