Abstract: A device which enables fully automatic removal of spot-check samples from unfolded cartons, and predetermines, by means of a counting and marking unit, a precise selected stack quantity from a travelling endless stack disposed in a scale-like configuration, so that they can be combined into a truss at the end of the scale stack. The device comprises a conveyor belt upon which the endless stack is transported in an oblique scale-like configuration at variable speed, a vertically-adjustable hold-down bar defining the stack height, a sensor scanning the stack height, at least one optical measuring arrangement for the position at any moment of a carton, a gripper disposed on a travelling gripper carriage for spot-check sampling, a magazine for receiving the removed spot-check samples and a pusher marking a folded carton.

Abstract: A device for on-line control and automatic ejection of faulty blanks moving along a conveyor wherein there is a linear ejector conveyor positioned laterally and at an acute angle to the conveyor direction and wherein the speed with which the faulty blanks are conveyed away by the ejector conveyor is related to the speed of the conveyor by the relationship(Conveyor Speed)=(Ejector Conveyor Speed)(Cosine of the acute angle).