Set up machine for egg cartons

Claim 1

AN APPARATUS FOR SETTING-UP A COLLAPSED PAPERBOARD CARTON BLANK INTO AN ERECTED CELLULAR CARTON, SAID BLANK BEING OF THE TYPE CHARACTERIZED BY A CONNECTED SERIES PANEL MEMBERS ADAPTED TO BE ERECTED INTO SIDE WALL FORMING MEMBERS AND A BOTTOM WALL FORMING MEMBER OF AN ERECTED CARTON AND INCLUDING CROSS PARTITION FORMING MEMBERS FOLDABLE OUT OF THE PLANE OF A TOP WALL FORMING MEMBER INTO INTERLOCKING ENGAGEMENT WITH SAID BOTTOM WALL FORMING MEMBER; SAID APPARATUS COMPRISING A SUPPORTING FRAME INCLUDING A SET-UP HEAD FOR MOVEMENT ON SAID SUPPORTING FRAME BETWEEN A RETRACTED POSITION AND SAID SUPPORTING FRAME BETWEEN A RETRACTED POSITION AND SAID SET-UP ZONE, A TUCKING BLADE FIXEDLY MOUNTED ON SAID SUPPORTING FRAME, A SECOND SET-UP HEAD, MEANS MOUNTING SAID SECOND SET-UP HEAD FOR MOVEMENT ON SAID SUPPORTING FRAME RELATIVE TO AID TUCKING BLADE BETWEEN SAID SET-UP ZONE ANS A POSITION RETRACTED THEREFROM, DRIVE MEANS OPERATIVELY CONNECTED TO SAID FIRST SET-UP HEAD TO MOVE THE LATTER ALONG SAID SUPPORTING FRAME, MEANS FOR FEEDING A CARTON BLANK INTO SAID SET-UP ZONE WHEREBY SAID CARTON BLANK IS CONFINED BETWEEN SAID FIRST AND SECOND SET-UP HEADS IN SAID SET-UP ZONE TO MOVE SAID SIDE WALL FORMING MEMBERS AWAY FROM EACH OTHER TO EXPAND SAID CARTON BLANK WITH SAID TOP AND BOTTOM WALL FORMING MEMBERS CONNECTED BETWEEN SAID SIDE WALL FORMING MEMBERS OPPOSITE TO EACH OTHER AND IN RESPECTIVE ENGAGEMENT WITH SAID FIRST AND SECOND SET-UP HEADS, MEANS FOR FOLDING SAID CROSS PARTITION FORMING MEMBER INWARDLY OF SAID EXPANDED CARTON BLANK IN SAID SET-UP ZONE, AND ABUTMENT MEANS INTERCONNECTING SAID SET-UP HEADS FOR MOVEMENT OF SAID SECOND SET-UP HEAD TOWARD ITS RETRACTED POSITION UPON FURTHER MOVEMENT OF SAID FIRST SET-UP HEAD WHEREBY SAID TUCKING BLADE ENGAGES SAID BOTTOM WALL FORMING MEMBER AND MOVES THE LATTER TOWARD AND INTO A FINAL SETUP POSITION INTERLOCKING WITH SAID CROSS PARTITION FORMING MEMBERS.