Carton erecting machine

Claim 1

A MACHINE FOR ERECTING CARTONS FROM CARTON BLANKS EACH OF WHICH HAS A PLURALITY OF PANELS HINGEDLY CONNECTED IN COLLAPSED TUBULAR FORM, SAID MACHINE INCLUDING; AN ELONGATED TABLE, MEANS ON SAID TABLE FOR SUPPORTING A STACK OF SAID BLANKS, MEANS FOR FEEDING ONE CARTON AT A TIME FROM SAID STACK TO AN ASSEMBLY STATION ON SAID TABLE, MEANS FOR ERECTING SAID TUBULAR BLANK AT SAID ASSEMBLY STATION, AND MEANS FOR ADVANCING ERECTED CARTONS FROM SAID ASSEMBY STATION COMPRISING: A PAIR OF ARMS MOUNTED FOR PIVOTAL MOVEMENT IN VERTICAL PLANES ALONG OPPOSITE SIDES OF SAID TABLE, INWARDLY EXTENDING FINGERS AT THE FREE ENDS OF SAID ARMS POSITIONED TO ENGAGE OPPOSITE EDGES OF A CARTON ON SAID TABLE, EACH OF SAID FINGERS HAVING A FORWARD CARTON-PUSHING SURFACE AND SMOOTHLY CURVES TRAILING CAM SURFACE ADAPTED TO BEND AWAY AND PASS THE EDGE OF A CARTON ENGAGED THEREBY, AND MEANS FOR MOVING SAID ARMS IN UNISION AFTER SAID CARTON ERECTING MEANS HAVE OPENED A BLANK TO OPEN TUBULAR FORM TO CARRY SAID FINGERS FROM A POSITION BELOW SAID TABLE AND FORWARD OF SAID ASSEMBLY STATION IN SEQUENCE ABOVE SAID TABLE AND REARWARD TO ENGAGE AND CAM PAST OPPOSITE EDGES OF SAID OPEN TUBULAR CARTON BLANK AND THEN TO MOVE SAID FINGERS FORWARD AFTER OPERATION OF THE CARTON ERECTING MEANS IS COMPLETE TO ENGAGE OPPOSITE EDGES OF A CARTON PANEL AND MOVE THE CARTON FORWARDLY.