Thread tension device for a sewing machine

Details Thread tension device for a sewing machine Thread tension device for a sewing machine

1992-07-15

1993-05-18

Crowder, Clifford D.

Sewing

Elements

Tensioning

242150R, D05B 4702

Patent

active

052111229

ABSTRACT:
A thread tension device including a plate fixed on a sewing machine, a bolt rotatably engaged in the plate, a pin engaged on the plate, a dial rotatably engaged on the bolt and having a number of holes for engagement with the pin, a pair of levers extended from the plate, a pair of discs engaged between the plate and the dial for clamping a thread, a follower threadedly engaged on the bolt and having two notches engaged with the levers, a spring biasing the discs together, whereby, the follower is rotatable by the dial when the dial is pushed inwards of the knob.

REFERENCES:
patent: 4694765 (1987-09-01), Diehl
patent: 5156105 (1992-10-01), Wang

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