Buttonhole stitch control in an automatic electronic sewing mach

Details Buttonhole stitch control in an automatic electronic sewing mach Buttonhole stitch control in an automatic electronic sewing mach

1978-07-14

1981-02-17

Nerbun, Peter P.

Sewing

Work manipulating

Guides

112158E, D05B 306, D05B 302

Patent

active

042508215

ABSTRACT:
In an automatic electronic sewing machine including a read only memory (ROM) and a random access memory (RAM), the read only memory (ROM) stores pattern data for performing buttonhole stitch operation in the forward direction and pattern data for performing buttonhole stitch operation in the backward direction. A first control switch functions to conduct the buttonhole stitch operation in the forward direction by a desired length selected by the operator. A storage means is provided for storing the length information of the buttonhole stitch formation in the forward direction, or the repetition number of a unit pattern in the forward direction. A second control switch functions to conduct the buttonhole stitch operation in the backward direction by the length stored in the storage means.

REFERENCES:
patent: 3799084 (1974-03-01), Furnari
patent: 4016821 (1977-04-01), Minalga
patent: 4056070 (1977-11-01), Hauf
patent: 4084524 (1978-04-01), Hasegawa
patent: 4106418 (1978-08-01), Hayashi

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