Feed cam rephasing device

Details Feed cam rephasing device Feed cam rephasing device

1979-03-01

1979-12-18

Schroeder, Werner H.

Sewing

Work manipulating

Guides

D05B 302, D05B 304

Patent

active

041788630

ABSTRACT:
A device permitting the rotation of a feed cam to a selected one of two positions in order to multiply the pattern capability of the sewing machine. A feed cam is supported in a sewing machine in a fashion to permit limited circumferential rotation with respect to a cam shaft. An actuator knob is keyed to the feed cam in a fashion to allow limited axial motion thereof while retaining a connection to the feed cam. The actuator is separably keyed to a positioning bushing affixed to the sewing machine cam shaft. Axial shift of the actuator towards the feed cam will disengage the actuator from the positioning bushing and permit rotation of the actuator and feed cams. The actuator may then be reengaged with the positioning bushing in a new position. The feed cam is thus driven through the actuators connection to the positioning bushing affixed to the cam shaft.

REFERENCES:
patent: 2879732 (1959-03-01), Casas-Robert et al.
patent: 2999471 (1961-09-01), Benink et al.
patent: 3214996 (1965-11-01), Bono
patent: 3540389 (1970-11-01), Graham
patent: 3648633 (1972-03-01), Adams

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