Four-step buttonhole mechanism for sewing machines

Details Four-step buttonhole mechanism for sewing machines Four-step buttonhole mechanism for sewing machines

1985-09-23

1986-03-25

Schroeder, Werner H.

Sewing

Stitch forming

Zigzag

D05B 306

Patent

active

045775753

ABSTRACT:
A sewing machine buttonholing mechanism is disclosed wherein feed balance between buttonhole side stitches is attained by positioning of buttonholing cam means rather than by the balance control of the driven cam controlled feed mechanism, and zero feed during bar tacking is independently set and uninfluenced by side stitch equalization.

REFERENCES:
patent: 3316868 (1967-05-01), Eguchi
patent: 3460496 (1969-08-01), Meier
patent: 3636900 (1972-01-01), Rogers et al.
patent: 4216731 (1980-08-01), Yazawa
patent: 4413576 (1983-11-01), Taguchi

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