Thread cutting device for use in a sewing machine

Details Thread cutting device for use in a sewing machine Thread cutting device for use in a sewing machine

1990-10-25

1992-02-04

Nerbun, Peter

Sewing

Elements

Thread cutting, severing or breaking

112277, 83902, D05B 6502, D05B 6936

Patent

active

050851608

ABSTRACT:
A device includes a driving device for driving an upper shaft. A moving blade is connected to the driving device via a clutch mechanism so as to be rotated by the driving device during on-condition of the clutch mechanism. A stationary blade cuts a thread held by a holding member in cooperation with the moving blade. A detecting device stops driving of the driving device based on a signal indicating the terminating of the moving blade while the moving blade and the driving device are connected. A range detecting device detects the rotation range of the upper shaft when the driving device is stopped based on a signal from the detecting device. A restarting device restarts the driving device based on a signal from the range detecting device.

REFERENCES:
patent: 3665878 (1972-05-01), Koschoff et al.
patent: 4104978 (1978-08-01), Takahashi et al.
patent: 4173193 (1979-11-01), Morinaga et al.

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