Buttonhole stitch control system for a sewing machine

Details Buttonhole stitch control system for a sewing machine Buttonhole stitch control system for a sewing machine

1977-05-23

1980-03-04

Nerbun, Peter

Sewing

Work manipulating

Guides

112158E, D05B 302, D05B 306

Patent

active

041911210

ABSTRACT:
The invention relates to a buttonhole stitch control system for a sewing machine, which previously determines the size of a button to be employed and operates the sewing machine to automatically stitch a buttonhole corresponding to the size of the employed button. According to the sewing machine of this invention, the sewing machine is previously set by the machine operator to memorize the size of a button to be employed so that the sewing machine may automatically stitch all processes of the buttonhole, namely the first bar-tack stitches, the left side line-tack stitches, the second bar-tack stitches and the right side line-tack stitches of the buttonhole, only after the first needle position has been determined by the operator.

REFERENCES:
patent: 3074632 (1963-01-01), Braun et al.
patent: 3596618 (1971-08-01), Goldbach et al.
patent: 3841246 (1974-10-01), Casner et al.
patent: 3855956 (1974-12-01), Wurst
patent: 4019449 (1977-04-01), Hauf

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