Thread tension discs

Details Thread tension discs Thread tension discs

1977-08-10

1978-11-07

Krizmanich, George H.

Sewing

Elements

Tensioning

D05B 4704

Patent

active

041239849

ABSTRACT:
Thread tension discs for sewing machine thread tension devices which urge thread in toward the center of the device. Complimental indentations in the surface of the discs at the point of entry of thread into the device so change the angle of the edge of the discs at the point of entry that the thread has a tendency to work its way into as opposed to out of the device.

REFERENCES:
patent: 3978802 (1976-09-01), Hamlett

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