Ductor roller timing mechanism

Claim 1

IN INKING MECHANISM FOR A PRINTING PRESS, THE COMBINATION WITH A SIDE FRAME OF THE PRESS OF AN INK FOUNTAIN ROLLER HAVING A SHAFT JOURNALLED IN SAID SIDE FRAME, DRIVE MEANS FOR ROTATING THE SHAFT AND THUS THE INK FOUNTAIN ROLLER, A DISTRIBUTOR ROLLER, A DUCTOR ROLLER SUPPORTED FOR OSCILLATING MOVEMENT AND ADAPTED TO HAVE ALTERNATE CONTACT WITH THE FOUNTAIN ROLLER AND WITH THE DISTRIBUTOR ROLLER, MEANS FOR EFFECTING SAID OSCILLATING MOVEMENT OF THE DUCTOR ROLLER INCLUDING A CAM MOUNTED ON THE INK FOUNTAIN ROLLER SHAFT FOR INDEPENDENT OSCILLATING MOVEMENT, SAID CAM HAVING ONE PORTION FOR CAMMING THE DUCTOR ROLLER INTO CONTACT WITH THE DISTRIBUTOR ROLLER AND SAID CAM HAVING A SECOND PORTION WHICH PERMITS THE DUCTOR ROLLER TO RETURN FOR CONTACT WITH THE FOUNTAIN ROLLER, AND MEANS INCLUDING A CONTROL MEMBER LOCATED IN A FIXED POSITION REMOTE FROM SAID CAM FOR ADJUSTING THE POSITION OF THE CAM ANGULARLY RELATIVE TO THE DUCTOR ROLLER TO THEREBY VARY THE DURATION OF CONTACT OF THE DUCTOR ROLLER WITH THE FOUNTAIN ROLLER DURING EACH OSCILLATING CYCLE OF THE CAM.