Printing ink metering pump

Details Printing ink metering pump Printing ink metering pump

1975-12-15

1977-05-03

Fisher, J. Reed

Printing

Inkers

Fountains

417500, B41F 3108, F04B 706, F04B 3710

Patent

active

040207609

ABSTRACT:
A variable stroke positive displacement liquid metering pump unit having a rotatable plunger which is moveable in an axial direction within a cylindrical pump casing. The plunger has a flat portion which is adapted to overlie the inlet and outlet ports during different degrees of rotation. A variable stroke drive means is provided to vary the distance the plunger moves outwardly of the casing in a liquid infeed direction to vary the amount of liquid metered.
A plurality of pump units are provided in a line across a printing couple with a spur gear mounted on each plunger of each unit to impart rotary motion to the plunger and with adjacent spur gears of adjacent units being connected in a gear train to a common drive means. A rotatable cam shaft common to all pump units is connected to the common drive means and cam rises on the shaft engage a portion of each of the variable drive means to provide axial movement of the plunger in the pump casing.

REFERENCES:
patent: 838565 (1906-12-01), McCanna
patent: 2843044 (1958-07-01), Mashinter
patent: 3636873 (1972-01-01), Fusco
patent: 3651756 (1972-03-01), Smith, Jr.

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