Fast-release sewing machine control device

Details Fast-release sewing machine control device Fast-release sewing machine control device

1986-08-18

1987-11-17

Nerbun, Peter

Sewing

Elements

Presser devices

112275, 112286, D05B 2902, D05B 6922

Patent

active

047065885

ABSTRACT:
In a sewing machine which is so designed that its cloth presser driven to press a material to be sewn for a sewing operation is automatically released when the sewing operation is ended, a sewing machine control device comprising drivers for operating a brake to stop the vertical movement of the needle, for operating the cloth presser, and for operating a thread wiper and a control section. When the needle is moved to its upper position at the final stage of the sewing operation, the control section operates the driver for the thread wiper and restores, after the thread wiper has been restored, the cloth presser. Alternatively, if the thread wiper isn't used, when the needle is moved to the upper position, the control section operates the brake and releases the cloth presser whereby the time which elapses until the cloth presser has been released is shortened.

REFERENCES:
patent: 4538533 (1985-09-01), Ohchi et al.
patent: 4546716 (1985-10-01), Babson et al.

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