Thread tensioning device for a sewing machine

Details Thread tensioning device for a sewing machine Thread tensioning device for a sewing machine

1989-12-26

1991-07-23

Nerbun, Peter

Sewing

Elements

Tensioning

112278, D05B 4704

Patent

active

050334000

ABSTRACT:
A device on a sewing machine for controlling the tensile stress (F) applied to a thread as it is being fed in the sewing process, including a device for producing a frictional force acting on the thread, a setting member, a force-measuring device, and a control unit for controlling the tensile stress (F) in the thread. The setting member functions commonly as the force measurement sensor and the force-applying device.

REFERENCES:
patent: 4793273 (1988-12-01), Hara et al.
patent: 4873931 (1989-10-01), Takagi et al.

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