Abstract: An improved gate assembly for the carton blank magazine of a packaging machine includes a frame fixedly mounted on the magazine. The frame has a longitudinal opening formed therein for permitting the passage of a single carton blank therethrough. The frame has air ducts extending therethrough and receiving members extending from the air ducts. Each of the receiving members has at least one slot formed in the surface thereof facing the magazine. Each of the receiving members also has an interior channel formed therein for communicating air between the slots and the respective air duct. In operation, negative air pressure applied to the air ducts induces a carton blank from the magazine into contact with the receiving members.

Abstract: An improved cam mechanism bends carton blanks fed from the magazine of a packaging machine. The carton blanks each have a gripped portion attached to the packaging machine and a bendable portion extending from the gripped portion. The cam mechanism includes a rotatable shaft mounted on the packaging machine and at least one cam member mounted on the shaft. The cam member has a plurality of longitudinally extending side walls and apex portions interconnecting the side walls. Rotating the shaft about its longitudinal axis positions the side walls adjacent the gripped portions of the carton blank, and the apex portions radially displace the bendable portions of the carton blanks as the carton blanks are fed from the magazine.