Rotary printing presses

Claim 1

A rotary printing press having a frame and an image cylinder positioned on said frame in an operative position aligned directly below an impression cylinder, said impression cylinder being so mounted on the frame as to be selectively movable between a non-functioning position spaced above said image cylinder and an operative position where it cooperates with the operatively positioned image cylinder for forming a nip through which material to be printed may be fed, said press including a mounting cradle for said image cylinder comprising an elongate horizontal beam and a pair of upstanding supports on the beam, at least one of said supports being movable longitudinally of said beam for adjustment of the relative spacing of said supports and each support having bearing means rotatably mounting a respective end of the image cylinder; opposed horizontal slide means on said frame and extending transversely thereof on which said cradle is supported and along which said cradle is selectively movable in a direction parallel to the axis of rotation of the image cylinder for insertion into said frame for operatively positioning the image cylinder mounted thereon and for removal from said frame; locator means on opposite sides of the cradle adapted for engagement with and movement along substantially vertical longitudinal formations of the slide means to positively locate the cradle laterally of the slide means; and clamping means for releasable endwise connection of the cradle to the frame to positively maintain the cradle longitudinally of the slide means in the operative position of said image cylinder, said slide means comprising horizontally spaced rails along which the cradle is movable, said substantially vertical longitudinal formations being upright flanges on said rails, said locator means comprising rotatable side rollers on the cradle peripherally engaging said flanges, and at least some of said side rollers being eccentrically mounted for selectively adjustable positive location of the cradle laterally of the rails.