Abstract: The invention relates to a method and an apparatus for measuring a rotational speed, in particular a rotational speed of a wheel of a motor vehicle, by means of a speed sensor, wherein the speed sensor produces an output signal characterizing the actual rotational speed and wherein the output signal of the speed sensor is sampled and further processed in accordance with sampled values thus obtained. For an—in hardware terms—simple realization, according to the invention it is provided that the output signal is sampled at a predetermined sampling rate over at least one measuring cycle, that in each case the amplitude of sampled values obtained in the measuring cycle is determined and that from the rate of occurrence of sampled values of an amplitude lying within a predetermined amplitude range at least one signal level occurring during the measuring cycle in the output signal is determined.

Abstract: The invention relates to a method and an apparatus for measuring a rotational speed, in particular a rotational speed of a wheel of a motor vehicle, by means of a speed sensor, wherein the speed sensor produces an output signal characterizing the actual rotational speed and wherein the output signal of the speed sensor is sampled and further processed in accordance with sampled values thus obtained. For an—in hardware terms—simple realization, according to the invention it is provided that the output signal is sampled at a predetermined sampling rate over at least one measuring cycle, that in each case the amplitude of sampled values obtained in the measuring cycle is determined and that from the rate of occurrence of sampled values of an amplitude lying within a predetermined amplitude range at least one signal level occurring during the measuring cycle in the output signal is determined.

Abstract: A single sheet collecting device for stacking sheets of paper or plastic material has at least one transport element transporting paper sheets in a transport direction. The device further has at least one stop unit arranged in a transport path of the paper sheets in the transport direction. At least one ramp device is provided for lifting the paper sheets during transport briefly out of a transport plane of the transport path. At least one pressing device is arranged in the transport path of the sheets between the ramp member and the stop unit, wherein the pressing device presses the sheets of a stack against one another to secure them against shifting.

Abstract: A single sheet collecting device for stacking sheets of paper or plastic has at least one transport element and at least one stop unit arranged in a transport path of the sheets. First and second deflecting parts are arranged along the transport path of the sheets for moving the sheets during transport for a moment out of a transport plane of the sheets. The first and second deflecting parts are adjustable from a first position for top stacking the sheets into a second position for bottom stacking the sheets and vice versa.

Abstract: A buckling-type paper sheet folder comprises a protective housing (7) and two pairs of folding cylinders (W1, W2, W3, W4) which are mounted in a cylinder frame (1) and conjointly driven by an electric motor (4). Folding pockets (5,6) and the cylinder frame are enclosed on all sides by the housing which has two parts, namely a base (8) and a cover (9), that are hinged and/or detachably connected to each other. In the base, a box-like compartment (12) is formed below the folding pockets accommodating the cylinder frame. The cover comprises a wall (45) extending between vertical side walls (40,41) and covering the upper foldin pocket (5) and having a portion (48) forming the upper boundary of a sheet intake opening. The cover further comprises a second wall (54) extending above the second folding pocket (6) inwardly, to form the lower boundary of the intake opening (51), and having a front portion 39.

Abstract: A buckle folding machine with one or several folding roller pairs (W1/W2, W2/W3, W3/W4, W4/W5) and one or several folding pockets (T1, T2), which are associated with the individual folding station (F1 through F4) and which each have a paper stop (10, 11/1, 12, 13), which can be set to different feed lengths. To also collect and jointly fold a plurality of sheets of paper (1), at least one folding pocket (T2) is designed for simultaneously receiving a plurality of sheets of paper (1) such that the individual sheets of paper (1) are able to run in automatically up to the paper stop (11/1) over their full length and remain there. A pushing device is provided (3) which performs impulse-like stroke movements by means of a special drive (31) controlled by a presettable sheet counting device (18) or code-reading device (24). These stroke movements cause the sheets of paper collected in this folding pocket (T 2) to be delivered together into the next folding station (F2).

Abstract: A device for folding successively fed sheets which have a plurality of transversely spaced dried adhesive areas thereon includes a plurality of folding rolls arranged in a sheet feedback between which the sheets are fed and which have at least one pocket into which the sheets are fed after they have been folded at least once as they are passed between folding rolls. The sheet wetting device comprises a plurality of moveable belts which are arranged over the sheets as they are fed through the sheet feed path, they are guided and moved through a path in which they overlie each sheet in succession. Construction includes means for holding at least some of the belts into contact with the sheets as they are moved in order to wet the sheets in selected areas in it includes means for passing the belts into association with a belt wetting device or reservoir so that they wet the dry areas which they contact.

Abstract: In a sheet feed bench with two parallel sheet feed rails that are adjustable relative to one another and with each having blowing jets on their surfaces facing one another directly above the level of the bench, connected to a common source of compressed air, the sheet feed rails resting on the bench surface are provided with groove-like or notch-like enlargements at the level of the blowing jets. Each of these extend over the entire length of the sheet feeder rails. These enlargements make it possible to position the inner surfaces of the sheet feeder rails so closely and tightly against the longitudinal edges of the stack of sheets that only small amounts of compressed air can escape upward. The formation of an air cushion is improved by this in such a way that the stack height can be more than double without adversely affecting the single-sheet separation.

Abstract: A folding machine includes an entrance feed for the infeed of materials to be folded which are operated on by a plurality of folding devices arranged along the feed path, each of which feeds the material after folding into a receiving pocket which has an adjustable stop. The stop is adjusted so that the materials being fed are received in the pocket at the correct location so as to position them for subsequent folding or for ejecting at an ejection point. The invention provides a conveyor belt which operates so that an upper transport reach is movable below the ejection point to receive the folded materials. Associated with the conveyor is a brake element which overlies the materials which are fed on the conveyor transport reach. The brake element rests on the folding material and is mounted so that it applies a yieldable pressure on the materials as they moved therealong.

Abstract: A folding machine for folding sheet material comprises a housing defining a space and having an in-take opening and a discharge opening for sheet material before and after it is folded. A frame is provided in the housing and carries four rollers which are engaged with each other to form a take-in nip for receiving sheet material from the in-take opening, a first folding nip for executing a first fold on the paper and a second folding nip for executing a second fold of the paper. The rollers are engaged to each other by gears and are rotated by a single electric motor for moving the sheet material from the take-in nip to the first folding nip and from the first folding nip to the second folding nip. A pocket is formed upstream of the first folding nip in the housing for receiving the sheet of paper to stop its forward progress. The sheet of paper is continued to be fed by the take-in nip so that it folds into the first folding nip which draws the now once folded paper from the first pocket.

Abstract: A device for distributing sheets in a predetermined sequence into a plurality of collecting pockets successively arranged in a horizontal sheet feed path includes a guide member connected at the upper end of each of a plurality of walls successively arranged beneath the feed path to define the collecting pockets. The guide member extends at a substantially equal angle of inclination relative to the feed path and a deflection plane through which the sheets are deflected. A guide tongue connected to the guide plate extends in the same plane of inclination of the guide plate and projects into an adjacent one of the collecting pockets. A guide fin, connected to the guide plate, is provided for preventing areal contact between a deflected sheet and a guide plate.