Electronic circuits for sewing machines

Details Electronic circuits for sewing machines Electronic circuits for sewing machines

1976-03-23

1978-08-22

Schroeder, Werner H.

Sewing

Work manipulating

Guides

D05B 302

Patent

active

041080912

ABSTRACT:
A control unit for a sewing machine includes a mechanism for mechanically positioning the stitch-forming members and a pattern memory unit for controlling this mechanism, from which stitch position detemining code words belonging to a specific pattern can be selected by the operator. The code word for determining a stitch position is read from the pattern memory into a shift register. The shift register is shifted in relation to the movement of the main shaft of the sewing machine so that code words for each successive stitch of a pattern are successively made available to the mechanical positioning mechanism. The succession of code words in a pattern can be recirculated in the shift register at the end of a pattern cycle, for repetition of the pattern.

REFERENCES:
patent: 3752098 (1973-08-01), Logan
patent: 3820082 (1974-06-01), Bauknecht
patent: 3855956 (1974-12-01), Wurst
patent: 3872808 (1975-03-01), Wurst

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