US Patent 7784142 Adjustable roller frame

Adjustable roller frame includes a pair of housing members having opposed surfaces containing laterally spaced grooves which cooperate to define laterally spaced guideways in which support arms are axially slidably received for supporting roller covers of different lengths and/or diameters between opposite outer end portions of the support arms. These support arms are held in axially adjusted position by one or more cam members movable between a clamping position for applying a friction force to the support arms to hold the support arms against axial movement and a non-clamping position releasing the friction force.