Paper deck power lifter kit for retrofitting a manually cranked

Details Paper deck power lifter kit for retrofitting a manually cranked Paper deck power lifter kit for retrofitting a manually cranked

1993-11-23

1996-04-16

Burr, Edgar S.

Printing

Rolling contact machines

Rotary

271155, B41F 702, B65H 118

Patent

active

055072240

ABSTRACT:
This invention relates to a novel power lifter for a paper deck of an offset printing press. A paper deck power lifter for an offset printing press comprising: (a) a reversible electric motor connected to a paper deck elevation crankshaft of an offset printing press; (b) an electrically activated solenoid connected to a paper deck catch release of an offset printing press; (c) a manually operated polarity reversing switch connected to the electric motor for determining the direction of electrical current to be delivered to the electrical motor, thereby selecting the direction of rotation of the electric motor; (d) a manually activated electrical variable speed switch electrically connected to the electric motor to enable manual control of the speed of rotation of the electric motor.

REFERENCES:
patent: 3820777 (1974-06-01), Reehil
patent: 4801135 (1989-01-01), Porio
patent: 4832329 (1989-05-01), Radi
patent: 5157448 (1992-10-01), Lang
patent: 5201509 (1993-04-01), Kirchoft
patent: 5248137 (1993-09-01), Rabjohns
J. C. Whitney Catalog pp. 1 and 27 1982.

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