Adjustable compression roller apparatus

In a pressure roller apparatus comprising a frame, an elongate compression roller each end of which is rotatably supported by side members of said frame and the surface of which is in surface contact with another element to provide a pressure nip at the area of contact with said other element, and at least one pressure roller assembly comprising a housing rotatably supporting at least one pressure roller which contacts the surface of said compression roller opposite the surface in said pressure nip and which is adjustable in a direction towards and away from the apex of said compression roller to increase or decrease the pressure between said pressure roller and said compression roller and, consequently, the pressure in said nip, the improvement comprising a crossbar each end of which is adjustably attached to the side members of said frame for movement towards and away from the apex of said compression roller, each said pressure roller assembly being adjustably attached to said crossbar by a single adjustment means comprising a bolt which is rotatably-connected to the housing of said assembly at a centerpoint thereof and threadably engages said crossbar, rotation of said bolt causing said assembly to move towards or away from said crossbar to effect adjustment of the degree of pressure exerted by said pressure roller against said compression roller, said bolt permitting said assembly to pivot thereabout whereby the surface of said pressure roller can retain uniform pressure contact with the surface of said compression roller during operation regardless of irregularities in the roundness or levelness of either said pressure roller or said compression roller, said pressure also being variable by adjusting the position of said crossbar relative to said side members without making an adjustment in the position of each said pressure roller assembly relative to said crossbar.