Axially oscillating ink distributing roller having a unitary roc

Details Axially oscillating ink distributing roller having a unitary roc Axially oscillating ink distributing roller having a unitary roc

1988-05-10

1989-05-30

Burr, Edgar S.

Printing

Inkers

Roller

101DIG38, B41L 2716

Patent

active

048339873

ABSTRACT:
An axially oscillating ink or other coating material distributing rotationally driven roller has axially spaced apart internal left and right hand threads journaled for rotating and sliding axially on a shaft. A unitary rocker-follower lever is mounted for rocking relative to the shaft about the axis of a pin or a spherical element mounted to the shaft. Opposite ends of the lever has segments of external threads formed integrally with it. The external thread segments act as internal thread followers and are caused to engage and disengage the internal threads alternately to drive the roller in opposite axial directions. The lever is made long to minimize the angle through which it rocks in which case there is only a tiny amount of movement between possible wearing surfaces on the rocker and the pin or spherical element on which the lever rocks so wear is reduced to a minimum.

REFERENCES:
patent: 4509426 (1985-04-01), Hardin
patent: 4672894 (1987-06-01), Hardin
patent: 4756249 (1988-07-01), Hardin

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