Abstract: A controlling system for mechanisms which deliver sheets taken off from a sheet pile in a processing machine. A first height detecting element for a rear part of the sheet pile and a second height detecting element for a front part of the sheet pile are provided with respective first and second detection fingers. The first and second detecting elements are connected to a command circuit which actuates a reduction motor driving the elevator lifting the sheet pile. The calculator also actuates the motor for the lifting or lowering of the sucking unit. The device is used in devices feeding sheets taken off from the top of a pile into a processing machine.

Abstract: A device for separating a batch of sheets from a pile of sheets and introducing the batch into a conveyor of a machine designed for processing the sheets characterized by a frame having a movable stop member mounted thereon, a unit for moving a pile of sheets so that the end of the pile is adjacent the movable stop, a unit which cooperates with the movable stop and separates a batch of sheets from the one end of the pile and another unit for moving the separated batch of sheets in a second direction parallel to the plane of the sheets in the pile to pass through an opening provided by moving the movable stop to enable introduction of the batch into a conveyor of a machine.

Abstract: A device for receiving die cut blanks and forming a stack or pile of blanks within a magazine having at least a pair of spaced wall members which provide a pair of spaced parallel vertical wall surfaces of the chamber of the magazine characterized by at least one of the wall surfaces having a plurality of apertures and a device for retaining blanks in a pile in the magazine as a previously formed pile of blanks is being removed therefrom including a plurality of spaced fingers supported for movement in a direction perpendicular to the plane of the one wall surface between a first position extending through the spaced apertures into the chamber and a second position withdrawn from the chamber.