Needle control device for sewing machines

Details Needle control device for sewing machines Needle control device for sewing machines

1980-02-26

1981-04-07

Hunter, H. Hampton

Sewing

Elements

Driving mechanisms

74104, D05B 5514

Patent

active

042599164

ABSTRACT:
An improved device for operating a needle in a sewing machine having a needle supporting clamp that is guided for sliding movement in a vertical plane by a needle bar. The needle bar is pivotably mounted on and depends from a support member which causes it to automatically align itself and follow the effective path of travel of the needle supporting clamp. The support member is mounted on the machine frame and is eccentrically positionable which provides a means whereby it can be selectively located in a position whereat the needle bar depending therefrom will never be subjected to more than a minimum amount of resistance by the needle supporting clamp during the latter's sliding movement thereon.

REFERENCES:
patent: 2799236 (1957-07-01), Marjorio et al.
patent: 3645221 (1972-02-01), Hirayama
patent: 3731643 (1973-05-01), Middlebrook
patent: 4037548 (1977-07-01), Hirayama et al.
patent: 4167913 (1979-09-01), Hirayama

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