Sewing machine with a device for setting thread tension

Details Sewing machine with a device for setting thread tension Sewing machine with a device for setting thread tension

1985-09-03

1987-01-27

Schroeder, Werner H.

Sewing

Elements

Tensioning

112229, D05B 6300, D05B 4702

Patent

active

046387510

ABSTRACT:
A tension setting device of the sewing machine comprises an upper thread tension device on the machine frame. A selecting device for selecting a thread tension in response to a thickness of a fabric being sewn is mounted to the machine frame. An auxiliary upper thread tension device cooperating with the selecting device and actuated thereby to adjust upper thread tension in response to the thickness of the fabric is provided in the tension setting device. A lower thread adjusting device cooperates with the thread tension selecting device to adjust the lower thread in response to the thickness of the fabric being sewn.

REFERENCES:
patent: 3408832 (1968-11-01), Abe et al.
patent: 4098208 (1978-07-01), Hedegaard
patent: 4301757 (1981-11-01), Tonomura
patent: 4340003 (1982-07-01), Hanyu et al.
patent: 4377980 (1983-03-01), Hanyu et al.
patent: 4429649 (1984-02-01), Eguchi et al.
patent: 4466368 (1984-08-01), Hanyu et al.

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