Rotary newspaper printing press having automatic interrupters for press cylinders

Claim 1

A rotary newspaper printing press comprising an impression cylinder and a printing cylinder adapted to have a web of paper passed therebetween for printing thereon, an inking cylinder picking up a thin uniform film of ink thereon from an ink fountain, a single ink transfer cylinder having a resilient pad thereon engaging said inking cylinder and said plate cylinder for transferring ink to the plate cylinder, said impression cylinder, printing cylinder and ink transfer cylinders each having the same working diameter and all being gear driven at the same angular velocity, said ink transfer cylinder being mounted by tapered preloaded roller bearings in a bearing block, means mounting said bearing block for linear movement along a single line toward and away from said inking cylinder and plate cylinder outward of the press, adjustable stop means disposed to engage said bearing block at adjustable positions at opposite ends of movement thereof for fixing operating and retracted positions of said ink transfer cylinder, a web break detector adapted to engage said web of paper and to produce a signal upon web breakage, and actuator means operated by said signal for moving said bearing block away from said press to separate said ink transfer cylinder from said inking cylinder and plate cylinder to terminate the transfer of ink between all cylinders of the press upon web breakage.