Ink pump with positive zero set

Details Ink pump with positive zero set Ink pump with positive zero set

1982-07-13

1984-07-24

Fisher, J. Reed

Printing

Rolling contact machines

Rotary

101365, 101366, B41F 3108, B41L 2710

Patent

active

044612095

ABSTRACT:
An ink pump adapted for use with a rotary printing press comprising four pump bodies each having individual pumping units. The pumping units include a plunger shaft which rotates and reciprocates within a sleeve having an inlet and an outlet port. The shaft includes a cut-out portion which comprises a piston surface for pumping the ink upon the reciprocation of the shaft. A sliding shoe is eccentrically positioned relative to an axis of the shaft and rides upon a movable planar wobble plate angled relative to an axis of the shaft, providing the impetus for the reciprocating motion of the shaft. When the wobble plate is rotated to a position where it is normal to an axis of the plunger shaft, a zero set adjustment screw contacts the shaft axially, prohibiting the shaft from contacting the wobble plate and reciprocating. A potentiometer registers the angular position of each wobble plate and displays the position on a control panel readout to give the use thereof a quick reference of the pumping action of each pumping unit.

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