Marking apparatus

Claim 1

IN APPARATUS FOR MARKING ARTICLES CARRIED ALONG A PREDETERMINED PATH BY A CONVEYOR, A STRUCTURAL FRAMEWORK DISPOSED ABOVE SAID CONVEYOR, AN ELONGATED ARM PIVOTED AT ONE END TO SAID FRAMEWORK TO SWING TOWARD AND AWAY FROM SAID CONVEYOR ABOUT A FIXED AXIS EXTENDING TRANSVERSELY ACROSS SAID PATH AND PARALLEL TO SAID CONVEYOR, A CYLINDRICAL DRUM JOURNALED ADJACENT TO THE FREE END OF SAID ARM TO ROTATE ABOUT AN AXIS PARALLEL TO SAID FIXED AXIS, A SECOND ARM HAVING ONE END SECURED TO THE FREE END OF THE FIRST ARM AND ITS OTHER END FREE, SAID SECOND ARM BEING INCLINED DOWNWARDLY AND FORWARDLY TOWARD SAID COVEYOR, A ROLLER JOURNALED ON THE FREE END OF SAID SECOND ARM IN ROLLING ENGAGEMENT WITH SAID CONVEYOR, A PLURALITY OF PRINTING MEMBERS ANGULARLY SPACED APART AROUND THE OUTER PERIPHERY OF SAID DRUM, MEANS ROTATING SAID DRUM THROUGH A PRESELECTED ANGULAR DISPLACEMENT AS AN ARTICLE IS ADVANCE THEREBENEATH BY SAID CONVEYOR THEREBY TO MOVE ONE OF SAID PRINTING MEMBERS INTO SURFACE ENGAGEMENT WITH SAID ARTICLE AND TO POSITION ANOTHER OF SAID PRINTING MEMBERS TO BE MOVED INTO CONTACT WITH A SUCCEEDING ARTICLE MOVING ALONG SAID PATH, SAID ROLLER BEING ADAPTED TO ROLL OVER AN ARTICLE MARKED BY SAID DRUM THEREBY TO SWING SAID SECOND AXIS UPWARDLY ABOUT SAID FIXED AXIS TO MOVE SAID DRUM AWAY FROM SAID PATH.