Plate lockup for reversible plate cylinder

Claim 1

IN A PLATE CYLINDER FOR A CONTINUOUS WEB-FED PRINTING PRESS, A PLATE LOCK UP MECHANISM COMPRISING, IN COMBINATION, A PAIR OF CLOSELY ADJACENT OPPOSED JAW ASSEMBLIES EXTENDING LONGITUDINALLY SIDE BY SIDE IN RECESSED POSITION IN THE CYLINDER FOR GRIPPING THE OPPOSITE EDGES OF A PRINTING PLATE, SAID JAW ASSEMBLIES BEING MOUNTED FOR MOVEMENT WITHIN THE RECESS RELATIVE TO THE CYLINDER, EACH OF SAID JAW ASSEMBLIES BEING FORMED OF A PAIR OF COOPERATING JAWS BIASED TOGETHER, A SERIES OF TENSIONING SPRINGS ANCHORED WITH RESPECT TO THE CYLINDER AND TENDING TO MOVE EACH JAW ASSEMBLY IN A DIRECTION TO TENSION THE PLATE, AN ACTUATOR AT THE OUTBOARD END OF EACH OF THE JAW ASSEMBLIES FOR RETRACTING THE ASSEMBLIES AGAINST THE FORCE OF THEIR TENSIONING SPRINGS, MEANS FOR SEPARATING THE OPPOSED JAWS FOR ENTRY OF THE ADJACENT EDGE OF THE PLATE, THROW OFF MEANS MOVABLE INTO ENGAGEMENT WITH THE ACTUATORS FOR PIVOTING SAID JAWS INTO POSITION FOR RECEIVING OF THE EDGES OF THE PLATE, ADJUSTING MEANS AT THE OUTBOARD END OF THE JAW ASSEMBLIES AND SELECTIVELY ENGAGEABLE WITH THE ACTUATOR AT THE LEADING EDGE OF THE PLATE FOR POSITIVELY POSITIONING THE PLATE FOR PERIPHERAL REGISTER, AND ADDITIONAL MEANS AT THE OUTBOARD END OF THE JAW ASSEMBLIES FOR LONGITUDINALLY ADJUSTING THE JAW ASSEMBLY AT THE LEADING EDGE OF THE PLATE FOR EFFECTING AXIAL REGISTER.