Synchronizing device for carton printing

Claim 1

A SYNCHRONIZING DEVICE FOR A PRINTING MECHANISM FOR PRINTING INDICIA UPON PACKAGES MOVING ALONG A CONVEYOR PAST SAID MECHANISM WHEREBY SAID INDICIA IS APPLIED TO A COMMON SURFACE OF EACH PACKAGE AT AN IDENTICAL LOCATION SPACED FROM THE LEADING EDGE THEREOF REGARDLESS OF THE LENGTH OF SAID PACKAGES AND SAID MECHANISM HAS A PRINTING WHEEL, INDICIA PRINTING MEANS ON THE PERIPHERAL EDGE OF SAID WHEEL AND MEANS FOR URGING THE PRINTING WHEEL PERIPHERY INTO ENGAGEMENT WITH SAID SURFACES AS SAID PACKAGES PASS SAID MECHANISM; SAID SYNCHRONIZING DEVICE COMPRISING ROLLER MEANS ROTATABLE IN UNISON WITH SAID PRINTING WHEEL, DETENT MEANS COOPERATING WITH SAID WHEEL AND DEFINING THEREWITH AN INITIAL ROTATIVE DISPOSITION RELATIVE TO SAID CONVEYOR WHEREBY THE SAID SURFACE OF EACH OF SAID PACKAGES WILL COMMENCE ROLLING ENGAGEMENT WITH SAID WHEEL FROM SAID INITIAL POSITION AS ITS SAID LEADING EDGE ENGAGES WITH SAID WHEEL, SAID ROLLER MEANS COMPRISING A PAIR OF ROLLERS DISPOSED ADJACENT OF AND EXTENDING BEYOND THE PERIPHERAL EDGE OF SAID WHEEL INTO THE PATH OF SAID MOVING PACKAGES AND ADAPTED WHEN SAID WHEEL IS SO INITIALLY DISPOSED TO BE ROTATED WITH SAID WHEEL TO A SECOND ROTATIVE DISPOSITION IN WHICH SAID ROLLER MEANS ENGAGE SAID SURFACE AND ROLL RELATIVE THERETO WITHOUT ROTATIVE MOVEMENT OF SAID WHEEL UNTIL SAID SURFACE HAS PASSED, SAID DETENT MEANS THEREAFTER ACTING TO MOVE SAID WHEEL TO SAID INITIAL DISPOSITION.