Box forming machine

Claim 1

A BOX FORMING MACHINE FOR ERECTING BOXES FORMED FROM FLAT PRE-CUT SHEET BLANKS, SAID BLANKS COMPRISING A BOTTOM PANEL HAVING OPPOSED PAIRS OF WALL PORTIONS, TWO OF THE OPPOSED WALL PORTIONS OF THE BLANK INCLUDING FEMALE LOCKING SLITS, THE TWO ADJACENT WALL PORTIONS OF THE BLANK INCLUDING MALE LOCKING TABS ADAPTED TO BE INSERTED INTO THE SAID FEMALE SLITS TO LOCK THE WALLS OF THE BOX IN ERECTED POSITION, SAID BOX FORMING MACHINE COMPRISING, A FIRST STAGE CONVEYER FOR FEEDING SAID BLANKS INDIVIDUALLY INTO SAID BOX FORMING MACHINE, A FIRST FORMING STATION HAVING RECIPROCATING MANDREL MEANS ADAPTED TO IMPRESS A FIRST PAIR OF SCORE LINES IN SAID BLANK, THEREBY TO DELINEATE AND PARTIALLY ERECT A FIRST PAIR OF OPPOSED WALLS FROM THE BLANK, A RECIPROCATING POSITIONING MECHANISM DISPOSED ADJACENT THE FIRST STAGE CONVEYOR, SAID MECHANISM HAVING A FIRST PUSHER ADAPTED TO POSITION SAID BLANK LONGITUDINALLY WITH RESPECT TO THE FIRST FORMING STATION, A SECOND FORMING STATION HAVING RECIPROCATING MANDREL MEANS ADAPTED TO IMPRESS A SECOND PAIR OF SCORE LINES IN THE BLANK, THEREBY TO DELINEATE AND PARTIALLY ERECT A SECOND PAIR OF OPPOSED WALLS FROM SAID BLANK, SAID RECIPROCATING POSITIONING MECHANISM HAVING A SECOND PUSHER MOVABLE IN UNISON WITH SAID FIRST PUSHER AND ADAPTED TO ADVANCE THE PARTIALLY ERECTED BLANK FROM THE FIRST FORMING STATION TO THE SECOND FORMING STATION, AND MEANS ADAPTED TO COMPLETELY ERECT SAID OPPOSED PAIRS OF WALLS AND CONCURRENTLY TO INSERT SAID MALE LOCKING TABS INTO SAID FEMALE LOCKING SLITS, THEREBY TO LOCK THE SAID WALLS IN ERECTED POSITION.