Abstract: An overhead flight conveyor assembly for use with a continuous motion packaging machine to erect four-sided tapered paperboard cartons is disclosed. The packaging machine has an elongate carton transport conveyor supported on a framework of the packaging machine, and moving along a path of travel. The overhead flight conveyor assembly has a housing supported on the framework of the packaging machine spaced above, and in alignment with the carton transport conveyor. A trailing lug assembly is supported on the housing and extends at least partially along the length thereof, the trailing lug assembly having at least one elongate conveyor chain with a series of spaced trailing lugs affixed thereto and being moved in the direction of the path of travel in timed relationship with the carton transport conveyor.