Abstract: A sheet processing apparatus provided with a sheet punching device and a processor unit for controlling the apparatus, said processor unit being adapted to enable an operator to specify sheet size, sheet orientation, and hole positions in batches of sheets being processed and creating a staggered stack of sheets by stacking said batches of sheets with holes aligned.

Abstract: A tax stamp perforator and notcher applies a diagonal line of spaced apart perforations on a tax stamp for subsequent application to a cigarette pack. The stamp is glued or otherwise applied to the cigarette pack normally across the back of the pack and one of the sides thereof. When the cigarette pack is opened the tax stamp is torn along the line of perforations. In order to facilitate rapid application of tax stamps to a production line of cigarette packs, notches in the form of lines of increased densification are applied to each stamp in the area where the stamp is bent around the side of the cigarette pack. These lines of increased densification are arranged parallel to the edge of the cigarette pack, and preferably one of the lines lies along the edge of the cigarette pack to thereby reduce the ability of the tax stamp to spring back away from the pack when glued to the pack. This feature enables the stamps to be applied to the packs at high production rates.

Abstract: A trim press for severing articles differentially pressure formed in a thermoplastic sheet comprising a pair of dynamically balanced trim die members mounted for movement toward and away from each other between spaced apart positions and closed positions engaging opposite sides of the sheet to sever the article from the sheet. One of the trim die members includes an opening therethrough for receiving the article as it is being trimmed and for passing the article therethrough after it is trimmed and part receiver means stationarily mounted in alignment with the opening for receiving the articles from the moving trim die member.