Apparatus for monitoring and controlling thread tensioning...

Details Apparatus for monitoring and controlling thread tensioning... Apparatus for monitoring and controlling thread tensioning...

2006-10-24

2006-10-24

Worrell, Danny (Department: 3765)

Sewing

Elements

Tensioning

Reexamination Certificate

active

07124697

ABSTRACT:
A thread tensioning device or apparatus for a sewing machine enables accurate, repeatable measurement and monitoring of the compression forces applied to the thread tensioning discs thereof. The apparatus further includes a visual display or output corresponding to the actual amount of compressive force being applied. The device further includes a comparator, which compares the electrical signal to a predetermined reference value to control or regulate the normal operation of the sewing machine.

REFERENCES:
patent: 4884763 (1989-12-01), Rydborn
patent: 5033400 (1991-07-01), Fischer
patent: 6595150 (2003-07-01), Yamazaki

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