Work feeding mechanism for sewing machines

Details Work feeding mechanism for sewing machines Work feeding mechanism for sewing machines

1975-08-27

1976-07-20

Hunter, H. Hampton

Sewing

Stitch forming

Chain or double chain

112209, D05B 2720

Patent

active

039700186

ABSTRACT:
A sewing machine for sewing a material workpiece, comprises a needle holder having a sewing needle which is mounted for both pivotal movement for swinging backwardly and forwardly and vertical reciprocation. The needle is driven by a sewing machine main shaft which also drives first and second feed dogs which are independently cyclically and alternatively engageable with the material to be sewn for advancing it in timed relationship to the reciprocation and to the swinging movement of the needle.

REFERENCES:
patent: 1685436 (1928-09-01), Ringe
patent: 3198154 (1965-08-01), Reeber
patent: 3285210 (1966-11-01), Tretow et al.
patent: 3687096 (1972-08-01), Smith

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