Thread tension adjusting device for a sewing machine

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

1991-09-23

1992-10-20

Schroeder, Werner H.

Sewing

Elements

Tensioning

242150R, D58

Patent

active

051561050

ABSTRACT:
A device including an axle rotatably supported in a sewing machine, a shaft fixed in parallel to the axle, one or more cams fixed on the axle, a lever having one end pivotally fixed and having the other end slidably engaged with the cam, and a gripping device including a pair of members disposed on the shaft and a spring disposed between the lever and the members so that a thread can be gripped between the members, and the lever can be caused to move toward or to move away from the members so that a tension force applied to the thread can be adjusted.

REFERENCES:
patent: 3311311 (1967-03-01), Furst
patent: 4803936 (1989-02-01), Mikuni et al.

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