Abstract: An apparatus for the automatic supply of the magazine of the feeder on a slotter/printer with a high production rate for making cases consisting of corrugated cardboard, comprising a device (3, 10, 4) intended for separating a bundle from the top of a stack of blanks (14) by placing this bundle upright on its edge, a retractable device (4) intended for causing the virtually vertical drop of this bundle, and a guide and receiving device (5, 7) making it possible to stop the bundle, still standing on its edge, a device (6) for squaring the bundle laterally after its drop, a device (27, 7, 8) for raising the bundle to a horizontal position, and a device (9) for receiving and discharging this bundle.

Abstract: Cardboard box forming and printing machine on which it is possible to effect a change of block on the printers without loss of time detrimental to the output of the machine. The printing modules of the machine are equipped to enable lateral translation either of the block-holder cylinder alone, or of the unit constituted by the block-holder cylinder and its inking device, as well as retractable means for propelling the cardboard which can be positioned when the block-holder cylinder is retracted laterally so as to continue to ensure the operation of advancing the cardboard provided by the latter before its lateral retraction.

Abstract: A method of employment of automatic lengthwise receivers which equip continuously operating corrugators. In accordance with the invention the course of the last panel of a first form and size is followed from its arrival upon the receiver, and a change of stack is triggered when this last panel has left the final conveyor of the receiver. Furthermore any retraction of the telescopic device located downstream from first conveyor of the said receiver is stopped.

Abstract: In a machine for separating and discharging products in sheet form, in which the sheets are supplied by a conveyor and stacked in a stacking position defined by a stop abutment associated with the conveyor, each successive sheet being introduced under the preceding sheet in the stacking position, a roller is provided at the upstream lower edge of the stack, the roller having peripheral cogs and being arranged so that the upstream edge of the lowest sheet in the stack rests against it and is raised by rotation of the roller.

Abstract: The ink return circuit of a flexographic printing machine, for receiving ink from the ends of the gutter formed by a stereo transfer roller and a pressure regulating roller, comprises, at each end of the rollers, a vertical deflecting spout for receiving ink from the gutter, each spout having three doctor blades comprising a first blade extending substantially along the line of centers of the rollers and inclined to form an overflow and two lateral blades extending perpendicular to the first blade and to the end faces of the rollers. The spouts are biased against the end faces of the rollers and form part of a set of interchangeable spouts.

Abstract: In a device for the synchronized introduction of sheets into a treatment machine, e.g. a printer-slotter or cutter for processing corrugated cardboard sheets, in which a reciprocating pusher pushes forward the lowermost sheet of a stack in a magazine between two stops and into engagement with feed rollers, the stack rests on the upper run of a set of endless belts, which upper run extends over a suction box which is maintained continuously under suction during forward movement of the pusher, the belts are driven forwardly to facilitate movement of the lowermost sheet from the bottom of the stack, and belts being immobile during the return movement of the pusher.

Abstract: A rotary self-sharpening knife comprises two identical half-knives each having a cutting edge on one face, the half knives being arranged with at least part of the peripheries of their other faces in contact, and means for urging the half knives together. In use the half knives are driven at different angular speeds so that there is slight relative movement of the half knives which produces a rubbing action between the peripheries of the half knives to maintain the cutting edges of the half knives sharp. The invention also relates to an assembly incorporating the inventive self-sharpening knife, and a machine for processing a product.

Abstract: In a cardboard blank folding machine for folding up the extreme transverse panels of a blank, e.g.