Bobbin case

Details Bobbin case Bobbin case

1976-02-23

1978-05-16

Gilreath, Stanley N.

Sewing

Elements

Revolving hooks

242156, D05B 5714, B65H 5904

Patent

active

040892824

ABSTRACT:
A bobbin case for sewing machines, in which a thin plate spring operates on the bobbin for inhibiting rotation thereof wherein an adjustable screw acts upon the spring to regulate the pressure on the bobbin and means is provided for exerting a constant thrust on the adjusting screw in a direction at a right angle to its axis for preventing it from loosening.

REFERENCES:
patent: 2555658 (1951-06-01), Ritter
patent: 3902575 (1975-09-01), Nelson et al.

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