Abstract: A device for treating material webs includes first and second neighboring drying cylinders separated by an intermediate space. The intermediate space has a length substantially equal to about twice the diameter of the largest of the first and second cylinders. The device includes at least a first deflecting roll disposed in the intermediate space and in a path of a material web conveyed through the device. The device further includes at least a second deflecting roll disposed below a coating device and above the intermediate space. The second deflecting roll is adapted to feed a web of material upwardly into the coating device.

Abstract: A wet portion of a paper machine, including a wire section and a pressing section has a plurality of roll presses. Each roll press includes two rolls defining a press nip. A water impervious belt having a smooth, non-porous surface is disposed in a continuous loop about at least two roll press rolls disposed consecutively with respect to a direction of conveyance of a paper web through the machine. Each press roll is associated with at least one counter roll or one shoe roll defining first and second press nips of the pressing section. The belt deflects about 180.degree. about each of the press rolls.

Abstract: A wet cyclone having a slender body with a truncated cone at an end thereof includes a heavy fraction outlet at an apex of the truncated cone and an immersion tube on the other end of the body. The immersion tube is cylindrical for withdrawal of a light non-gaseous fraction. A diffuser within the immersion tube deflects the flow within the tube for recovery of pressure head. The diffuser is disposed at a distance from the inlet end of the immersion tube of at least about half the inside diameter of the immersion tube.

Abstract: A flotation cell with at least one injector for introducing a fluid and aspirating air therethrough has a multi-hole aperture plate. Premixing tube sections are disposed in the injector downstream from the aperture plate at a distance from the plate of at least 0.1 times the diameter of a hole in the aperture plate. The tube sections are oriented perpendicular to the aperture plate and open into a mixing tube.

Abstract: The invention relates to an applicator for the coating of a paper or the like web, having a belt which is guided around a support member and a drive roller and forming a nip with the web on a web guiding backing roll. A coating nip is formed between the backing roll and the belt for the application of the coating composition to the web. The support member for the belt at the nip is a roller of relatively small diameter, as compared with the guide roller. At least one further roller or a pair of such rollers support the small diameter roller.

Abstract: A paper machine headbox having divided sections for feeding pulp suspensions with different properties therethrough includes a single inlet line and a plurality of feed lines connected thereto. In at least one of the feed lines, there is a separation device which separates certain pulp suspension components from the pulp suspension flowing therethrough. A discharge line connected to the separation device conveys separated pulp suspension components therefrom. A continuing feed line connected to the separation device conveys the remaining pulp suspension to the headbox.

Abstract: A winding device for paper or cardboard with at least two axis-parallel support elements for the sheet winding, which extend at least over the length of the sheet winding (T) and of which at least one is a carrier roll (2). The other support element has a rigid carrier (4), which guides the sheet winding over a sheath (7, 7') arranged in a rotating manner around the carrier or guided in a flexible tubing manner, and a carrying shoe (5, 5') combined with it and acting hydrodynamically with respect to sheath (7, 7'), which carrying shoe is provided with a concave pressure surface whose radius of curvature essentially corresponds to the maximum winding (T) including the sheath wall thickness, whereby carrying shoe (5, 5') can be adapted in its position to the size (position of the periphery) of the sheet winding (W') which is wound and present each time.

Abstract: A coating device includes a plurality of parallel coating blade lamellae made from highly wear-resistant material. The lamellae are disposed against one another in a housing and held thereby, forming a lamella packet wherein each lamella of the packet is disposed at the same inclination with respect to a plane perpendicular to a longitudinal axis of the packet. The inclination of the lamellae is adjustably controlled by at least one adjusting device acting on the packet. Thus, a change in lamellae inclination also changes a step-wise configuration of a surface contour formed by neighboring lamellae of the packet.

Abstract: A coating device having an applicator roll which forms an application slot with the backup roll which conducts the web of material. Adjoining the applicator slot is a pressure space which is formed at the outlet side of the application slot and between the applicator roll and the backup roll. A flexible guide wall having a shape which approximates or is adapted to the surface of the backup roll and/or can be adapted thereto by the Coanda effect itself, which wall forms a narrow slot along the web of material downstream from the pressure space. The wall is at such a slight distance away from the web that the formation of drips or streaks in the applied coating by the centrifugal force is excluded. The dosaging place for the final dosaging is formed by a dosaging doctor.

Abstract: A radial hydrostatic motor (radial piston machine) has a cylinder spider rotationally fixed and secured against axial displacement on a shaft and having a plurality of radial bores with pistons and sliding blocks that slide on the inner face of a hub ring or bushing. The bores communicate through control slots with high/low pressure delivery channels that open laterally into the cylinder spider in order to control the hydraulic media flow rate. Two mutually spaced rotors have bores with intercommunicating opposite control slots. Between both rotors is provided a housing intermediate partition having control disks opposite to the rotors and provided with channels which correspond to the control slots.

Abstract: An arrangement for dosing with a blade, in coating machines or similar, onto a running web of paper or cardboard carried by a roll in or with the arrangement. The blade is forced by means of a hold-down or several hold-down sections on the roll respectively the web. A transmitter transmits light, notably laser light. The blade features in the area between the contact line of the hold-down on it, and its contact line on the roll respectively the web, on its side away from the roll, at least one light-reflecting layer for reflection of the light ray directed by the transmitter at the layer. A receiver registers the position or angle of the ray reflected upon it by the light-reflecting layer of the blade. A controller is provided for controlling, dependent on the position signal of the receiver for the reflected light ray, the angular position of the blade, notably in its area between the contact line of the hold-down or the hold-down section and the roll.

Abstract: The invention relates to a sickleless internal gear pump with an internally toothed ring gear and a pinion meshing with the ring gear. The pinion and ring gear are rotatably mounted in a housing having a suction port and a pressure port. The ring gear includes radial ports for the medium to be pumped. The tooth heads of the ring gear or the tooth heads of the pinion have a profile groove into which a plurality of sealing elements are respectively inserted. The sealing elements are able to slide on the radially opposite tooth of the pinion or ring gear. The invention is characterized by a profile groove, viewed in axially perpendicular section, which has no ports. The individual sealing elements are provided with a channel establishing a fluid connection between the interior of the profile groove and the sealing face of the sealing element. The channel, viewed in the direction of rotation of the pinion, is enveloped by the material of the sealing element.

Abstract: A dosing system with a doctor element fashioned as a doctor rod, for the coating of material webs which are passed over at least one roll coordinated with the doctor element. The doctor element is accommodated in a bed supported by a holder of integral design with the bed and held on the wall of a mounting which at the same time is a bounding wall of the mouth channel for the coating mixture. The holder features on its end on its side opposite the mounting wall a clamping or mounting surface. The holder possesses in the end area of the mounting wall bounding on the feed channel a jump in thickness. On its side opposite the said clamping or mounting surface, a protuberance is provided with a bevel which with the bounding wall of the holder contained on the side opposite the clamping or mounting surface forms an angle between 15.degree. and 55.degree., which bounding wall surface is flush with the surface of the mounting wall.

Abstract: A flotation device includes an injector having a flow channel with a variable cross sectional area with respect to the direction of fluid flow through the injector. The injector introduces a mixture of gas and liquid into the device. The injector flow channel has repeated narrowings and widenings in the direction of fluid flow through the injector.

Abstract: A spreading device for the coating of moving material webs, especially paper or cardboard includes a clamping mechanism adapted to alternatively hold a doctor rod support bed or a coating blade, a pressing tube for pressing a doctor rod mounted on the doctor rod support bed onto a counter roll or a material web guided by a counter roll, and a profile strip having a tip portion adapted to press against a coating blade, the profile strip movable in a direction transverse to the counter roll by a displacement device. A plane defined by a pressing force through a contact region of the pressing tube and the doctor rod support bed and a plane defined by a pressing force through a contact region of the profile strip and the coating blade are disposed transversely with respect to a length of the counter roll and are either parallel or disposed at an acute angle to one another.

Abstract: A headbox for a machine for the manufacture of paper from a web of paper pulp has an upper lip and a lower lip disposed below the upper lip and operatively associated with the upper lip to form an interior region between the lower lip and the upper lip and a discharge region. The shape of the lower lip, adjacent the discharge region, over which the web of paper pulp flows is adjustable. The shape may be adjusted by the rotation of a round, rotatable member disposed flush with the lower lip of the headbox or by the deformation of a deformable member provided at the discharge region.

Abstract: A doctor blade holding apparatus, preferably for coating devices, includes a clamping mechanism which holds, via a mounting plate, a doctor blade support which carries a doctor rod. The apparatus includes a pressing tube which presses against the doctor blade support and thus presses the doctor rod against a counter roll. A holding strip provided at a back side of the doctor blade support clamps the mounting plate to the doctor blade support. The holding strip is disposed laterally with respect to a mid-plane of the doctor blade support to provide a contact region between a back side of the doctor blade support and the pressing tube which is in substantially the same plane as the mounting plate.

Abstract: A roll press with two press rolls which together form a press gap and whose axes are situated in a press plane. A journal is disposed on the ends of each roll, with pillow blocks for receiving the journals, with a rack for supporting the pillow blocks, and with tie rods which are arranged on both sides of the press plane and at least approximately parallel to it. Cradles are provided which support the pillow blocks. Between the cradles and the pillow blocks is an articulated joint which enables the pillow blocks to pivot about an axis which extends perpendicularly to the press plane and essentially in the axial plane of the respective roll.

Abstract: The invention relates to a coating device for coating moving webs of material, more particularly webs of paper or board, comprising a belt or hose (7), which is trained about the curved guide surface of a beam- or rod-like support member (1) and a drive roll (6), a cooperating roll (C) carrying the web, a coating gap (9) being defined between the cooperating roll (C) and the hose (7) for the application of the coating material to the web or the roll, a support beam (3), which extends in parallelism to the roll and the drive roll (6), for supporting the support member (1), and between the same a pressure hose (4) for the transmission of the support forces.

Abstract: A substance kneader, specifically for cellulose fiber suspensions, with kneading elements arranged at the periphery of a rotor encased in a housing. Two drum type rotor parts and a rotor part disposed in between feature a feed worm conveyor for each rotor part. In the area between facing ends of the worm conveyors, and symmetric to this area, are the inlet openings of the housing. On the ends away from each other, of the rotor parts, are the outlet openings of the housing. The outlet openings are each coordinated with delivery worm conveyors having variable-RPM drive for control of throughput and/or dwell time of the substance to be kneaded.