Rotary offset press with position control of offset cylinder relative to adjacent press cylinders

Claim 1

An arrangement for the control of the position of an offset cylinder of a printing machine at predetermined time intervals with respect to the form cylinder and with respect to the pressure cylinder comprising in combination: a stable bolt fixed to the sidewall of the machine, a cam disc mounted rotatably on said bolt, a toothed wheel rotatably supported on the hub of said cam disc, means for imparting to said toothed wheel a rotating movement, said toothed wheel provided with at least one recess, a pawl mounted in rocking fashion on said cam disc said pawl adapted for engagement in the recess of said toothed wheel, a two-arm lever mounted rotatably on the hub of said cam disc, the first arm of said two-arm lever provided on its extremity with a recess, the second arm of said two-arm lever provided with an extension, a spring loaded control lever mounted in rocking fashion on a bolt fixed in the sidewall of the machine, said control lever adapted for engagement with the extension of the second arm of the two-arm lever, a roller mounted on the extremity of said pawl, said roller adapted for engagement with the recess on the first arm of the two-arm lever, lever systems controlling the relative positions of the printing cylinders in dependence on the position of said cam disc.