Paper registration control device for printing presses

Claim 1

A paper registration control device for use in a printing press of the type including a paper supporting surface over which paper is moved as it enters the press, forward head stops, a rigid bar overlying said feed surface, and a shiftable side guide block and which receives paper from a feed mechanism, said paper registration control device comprising: an elongated, carrier member including spaced, parallel said members a transversely extending bottom member joining said side members and having an upwardly curved leading edge and a plurality of tandemly arranged holes extending vertically therethrough, each of said holes having an opening of reduced diameter where it opens through the bottom member of the carrier and the one of said holes closest to the leading edge having a diameter greater than the diameter of the remaining holes, said remaining holes being of equal diameter, said carrier member further defining an integral, downwardly opening slot extending longitudinally the entire length of said carrier, said slot being offset laterally from said tandemly arranged holes and dimensioned to receive the rigid bar of the press whereby the carrier is supported on said bar; a plurality of spherical pressure elements, each disposed in one of said carrier holes and having a diameter slightly greater than the reduced diameter of said opening, a segment of each of said pressure elements projecting below the carrier, at least one of said pressure elements having a diameter and weight different from that of the others, said pressure elements arrangeable in different patterns along said carrier; and guard means extending longitudinally of said carrier over said holes for preventing removal of said pressure elements from the top of said carrier.