Abstract: A dispenser for sheet material having stations for primary and reserve rolls of the material is characterized by improved mechanisms for transferring feed of the sheet material from the primary roll to the reserve roll upon complete exhaustion of the primary roll.In the disclosed embodiments the dispenser is a roll paper towel dispensing cabinet, and a feed mechanism initially receives and delivers paper from the primary roll to the exterior of the cabinet. The transfer mechanism senses the presence of the primary roll web at the feed mechanism and, irrespective of the tension of the web between the feed mechanism and the roll, automatically transfers the beginning of the web of the reserve roll to the feed mechanism only upon movement of the very end of the primary roll web past the feed mechanism.