Carton erecting machine

Claim 1

IN A CARTON ERECTING MACHINE, A PAIR OF DRIVE BELTS HAVING SPACED, PARALLEL, LIVE SIDES, WITH AT LEAST THE SURFACES OF SAID LIVE SIDES WHICH ARE TOWARD THE OPPOSITE BELT LYING IN PARALLEL PLANES, MEANS FOR DRIVING SAID BELTS IN A COMMON DIRECTION, A PIVOTABLE SQUARING MEMBER HAVING A CARTON-ENGAGING SURFACE LYING IN A PLANE PERPENDICULAR TO THE DIRECTION OF MOVEMENT OF SAID BELTS WHICH IS ALSO PERPENDICULAR TO THE PLANES OF SAID SURFACES OF SAID LIVE SIDES, THE LENGTH OF SAID SQUARING MEMBER BEING SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN THE PLANES OF SAID SURFACES, THE PLANE OF SAID CARTON-ENGAGING SURFACE INTERSECTING THE LIVE SIDES OF SAID BELTS AT INTERMEDIATE PORTIONS THEREOF, SAID BELTS ADAPTED TO FRICTIONALLY ENGAGE SIDE WALLS OF A CARTON TO BE ERECTED AND SAID SQUARING MEMBER BEING ADAPTED TO ENGAGE AN END WALL OF THE CARTON TO RESTRICT MOVEMENT OF THE END WALL OF THE CARTON WHILE SAID BELTS URGE SAID SIDE WALLS TOWARD SAID SQUARING MEMBER TO POSITION SAID END WALL PERPENDICULARLY TO BOTH OF SAID SIDE WALLS, MEANS SUPPORTING SAID SQUARING MEMBER FOR MOVEMENT INTO AND OUT OF THE PATH OF A CARTON ADVANCED BY SAID BELTS, MEANS FOR YIELDINGLY HOLDING SAID SQUARING MEMBER IN THE PATH OF A CARTON, STOP MEANS NORMALLY PREVENTING SAID SQUARING MEMBER FROM MOVING OUT OF THE PATH OF A CARTON, SWITCH MEANS CLOSED BY ENGAGEMENT OF AN ENTERING CARTON, DELAY MEANS ACTUATED BY THE CLOSING OF SAID SWITCH MEANS, AND MOVING MEANS ACTUATED BY SAID DELAY MEANS TO MOVE SAID STOP MEANS AWAY FROM SAID SQUARING MEMBER WHEREBY AN ENGAGING CARTON MOVES SAID SQUARING MEMBER OUT OF ITS PATH OF ADVANCEMENT, AND ADDITIONAL BELT MEANS BEYOND SAID ENGAGING BELTS FOR ENGAGING SIDE WALLS OF THE CARTON AND FOR MOVING IT BEYOND SAID BELTS WHILE HOLDING THE CARTON IN THE SQUARED RELATIONSHIP.