Method for making a buttonhole on a zigzag stitch sewing machine

Details Method for making a buttonhole on a zigzag stitch sewing machine Method for making a buttonhole on a zigzag stitch sewing machine

1975-12-30

1977-03-01

Guest, Alfred R.

Sewing

Elements

Frames

112437, D05B 306

Patent

active

040096734

ABSTRACT:
A method for making a buttonhole in a piece of material using a zigzag stitch sewing machine wherein the lips of the buttonhole are formed by the alternate stitching of opposite fractions of the desired length of the two lips, the stitching always being carried out in the same direction, and this process being repeated until the desired length is achieved. The material is moved in the reverse direction in the period between the finishing of one fraction of two opposite fractions and the starting of the other. The method is almost entirely automatic, all movements being regulated by interchangeable cams on the machine, and operator supervision is minimal.

REFERENCES:
patent: 1483184 (1924-02-01), McCann
patent: 1722658 (1929-07-01), Busha
patent: 2977913 (1961-04-01), Schenkengel
patent: 3570433 (1971-03-01), Weisz et al.

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