Electronic sewing machine

Details Electronic sewing machine Electronic sewing machine

1984-04-20

1986-02-18

Nerbun, Peter

Sewing

Stitch forming

Zigzag

112121, 112451, D05B 9704, D05B 302

Patent

active

045705615

ABSTRACT:
An electronically controlled sewing machine includes an electronic memory storing a plurality of stitch control data for respective stitch patterns, including a darning pattern composed of a number of vertical straight stitch lines sequentially produced in forward and reverse fabric feeding directions. A number of signals which are generated each time a fabric penetrating needle ascends above the fabric between the first stitch and the last stitch of each vertical straight stitch line of the darning pattern, are counted up by a counter to produce a corresponding value signal. The latter signal is compared with another value signal latched in a latch circuit in response to operation of a turning point designating switch adapted to designate a number of stitches for each vertical straight stitch line of the darning pattern. When the value signals coincide with each other, the count-up operation of the counter is reset for producing a subsequent vertical straight stitch line.

REFERENCES:
patent: 431583 (1890-07-01), Helwig
patent: 3599583 (1971-08-01), Berman
patent: 4182252 (1980-01-01), Yoneji et al.
patent: 4188900 (1980-02-01), Garron et al.
patent: 4250821 (1981-02-01), Miyao et al.
patent: 4345532 (1982-08-01), Eguchi
patent: 4434729 (1984-03-01), Davidson

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