Abstract: The invention relates to a method for operating a shredding machine with high power for the comminution of multilayered paper, data carriers and the like with at least one drive motor and a stator winding, which upon overloading of the shredding machine automatically is switched to reverse. The operation of the machine is possible without fear of overloading the machine and the user has no need to nor temptation to grip with one's hand paper jammed into the shredding machine. The object of the invention is achieved by providing a second stator winding, which upon overloading of the shredding machine is initially connected in parallel to the one stator winding. Therefor, in case of overloading no switching into reverse occurs, but for a limited time of, for example, 10 seconds a second stator winding is connected in parallel to the first stator winding.

Abstract: A microfilm destructing apparatus with a case and with a feed shaft disposed at the case for feeding of one or possibly more film cards along a cutter plate to a rotating milling cutter, which disintegrates the film card into fine particles; and which a complete and interference free removal of the generated microfilm particles is assured. The exhaust shaft is connected near the output end of the milling cutter, and is also connected to a suction blower. An air stream passes through the air gap slot, which is formed between the milling cutter teeth and the tip of the cutter plate. A pressure air stream may be employed fed from the input side to the milling cutter or if a suction air stream is present, it functions at the output end of the milling cutter.

Abstract: An improved baling press with a vertical operating direction and with a press plate guided within a press case by means of rollers and cooperating coordinated guides, and with the press plate being solidly connected to spindle nuts, which in each case are crossed through by a driven press spindle; the baling press permitting the guiding of the press plate of the press case only along one wall thereof, while the other walls with the exception of the wall disposed above or below the drive are available for other use, such as corresponding feed openings. Thus, the guiding of the press plate of the press case is only along one wall of the press case, preferably the rear wall thereof.

Abstract: A closure indicator for the door of a baling press, comprising at least one switch finger disposed on the swingable part of the door, which switch finger is adapted to actuate one or more switching cams of electrical switches disposed in said baling press, and said switch finger actuates a disc cam having control surfaces which are situated under a spring-loaded electrical switching element.