Feeding and cutting cylinder with suction-operated, sliding shutter for web rewinding machines

Abstract From the Canadian patent

A web-feeding and cutting cylinder for rewinding machines, especially in the paper-manufacture industry includes a suction-operated retention means which temporarily retains, on the cylinder surface, at least one end of the cut web. In the cylinder is a linear, ribbon-like shutter extending parallel to the axis of the cylinder. It is axially movable and has orifices which cooperate with orifices in the bed or surface on which the shutter slides. This arrangement opens and closes a communication between a vacuum cavity inside the cylinder and the cylinder surface with a limited displacement of the shutter.