Card printing machine

A printing machine having a type-holding bed with rails extending along the sides of the bed, a carriage movable along the rails, the carriage having side plates and carrying inking roller means for applying ink to said type and an impression roller between the side plates for movement along the bed, the improvement comprising eccentric cam means rotatably mounted on the side plates, the inking roller means having shaft end parts resting on the peripheries of said eccentric cam means, and means for rotating said eccentric cam means to raise and lower said inking roller means, relative to the bed, said side plates having slots formed therein in which are received the shaft end parts of the inking roller means, the slots being situated for positioning the inking roller means with said shaft end parts on said eccentric cam means;

• said slots in said side plates being of inverted Y-shape, said eccentric cam means being positioned at the ends of the legs of the Y, said side plates having circular recesses, circular tumblers rotatably positioned in said recesses, said tumblers having slots therein and so positioned that said slots align with said slots in the side plates, an oscillating roller, said slots in said tumblers receiving shaft ends of the oscillating roller in an eccentric position relative to the axes of the tumblers and positioning said oscillating roller in engagement with said inking roller means, whereby the tumblers are rotatable to lift the oscillating roller from the inking roller means, said side plates having an additional pair of circular recesses opposite each other, additional circular tumblers rotatable in said additional recesses, said additional tumblers having slots, a doctor roller, said doctor roller having shaft ends received in the slots in the additional tumblers in eccentric relation to the axes of said additional tumblers and engaging said inking roller means, said additional tumblers being rotatable to lift the doctor roller from said inking roller means.