Abstract: A filter for removing impurities from waste gases, and especially from the waste gases of an internal combustion engine, includes a filter body consisting of a plurality of compression moulded, high temperature resistant, sintered filter plates consisting of metal powder, metal chips, metallic fibres or a mixture of these materials, which are arranged on top of or behind one another and kept at a distance from one another by spacers, to form between them a plurality of flow channels. The flow channels are open at one end and closed at the other end in order to form inlet and outlet channels. The walls of the filter plate situated between the inlet and outlet channels constitute filter surfaces. The filter plates are formed by filter discs lying on top of one another, arranged in a filter housing and having a free or open central interior space, so that the waste gases flow radially through the filter discs from the outside towards the interior space or from the interior space towards the outside.

Abstract: A heatable roll, in particular for processing web-like materials, for example paper, which includes a roll body having peripheral passages or bores which are preferably arranged parallel to the axis of the roll body, and at least one, and preferably two, screwed-on flange journals. Heating elements are arranged in the bores which extend in the axial direction parallel to the roll body.

Abstract: A brake disk for motor vehicle disk brakes, comprising a disk rim with at least one friction ring, and an inner cup on which the disk rim is fastened. The disk rim and the inner cup consist of cast materials. In order that the inner cup and the disk rim can be produced more simply and correspond better to the different thermal and mechanical stresses, the inner cup preferably consists of a material of high tensil strength than the material of the disk rim. The disk rim is fastened to the cup by means of ribs provided on the inner cup, the material of the disk rim positively clasping the ribs in a radial direction during casting.

Abstract: A glazing or calendering roll includes a roll body having a flange journal at each end of the roll body and peripheral passages formed near the roll surface in the roll body for conducting a fluid heat or cold carrier through the roll. The roll has a central bore with large diameter. In the central bore, a displacement body is arranged in such a manner that between the inner wall of the central bore and the outer wall of the displacement body an annular gap is formed for conducting the fluid heat or cold carrier therethrough.

Abstract: In a process for producing a camshaft provided with bearings and cams from a pipe or from a blank having an initial oval cam shape, the configuration of the camshaft with the cams and the bearings is molded into the pipe or hollow blank by swaging and circular kneading with tool segments. In a first step, a cam shape blank (9) is brought in the area of the bearings (13) to an at least approximately circular shape by forging or hammering of the camshaft in a pre-formation. Then in a second step the configuration of the camshaft with cams (16) and bearings (13) is molded by hammering a circular kneading with tools elements that at least partly surround the blank and exert radial compressive forces thereon while changing its initial shape and oval cross section.

Abstract: A iron alloy material for the manufacture of brake drums, specially of massive and ventilated brake discs and other braking bodies, which has a pearlitic structure with a 5% maximum portion of ferrite, and a tensile strength of at least 200 N/mm.sup.2 and consists essentially of:carbon in an amount of 3.672 to 3.68 weight %;silicon in an amount not exceeding 2.10 weight %;manganese in an amount of 0.70 to 0.85 weight %;phosphorus in an amount of less than 0.080 weight %;sulfur in an amount of less than 0.095 weight %;chromiun in an amount of 0.18 to 0.25 weight %;molybdenum in an amount of 0.30 to 0.45 weight %;copper in an amount of 0.30 to 0.45 weight %; andiron in an amount of 92.045 to 94.5 weight %.

Abstract: A pig iron for the manufacture of brake bodies, specially ventilated brake discs, which poured in cast-iron molds has a tensile strength of at least 250 N/mm.sup.2 and consisting essentially of:carbon in an amount 3.65 to 3.75 weight %;manganese in an amount 0.60 to 0.70 weight %;silicon in an amount not exceeding 2.10 weight %;phosphorus in an amount less than 0.09 weight %;sulfur in an amount less than 0.10 weight %; andiron in an amount 93.26 to 95.75 weight %;said iron having a pearlitic structure and said material when cast in cast-iron molds having a tensile strength of at least 250 N/mm.sup.2.

Abstract: A heating or cooling roller comprises a stationary axle, at least one hydrostatic or hydrodynamic bearing element to support a rotary roller shell on the stationary axle, and a heatable or coolable heat transfer medium which flows through an annular gap between the stationary axle and the rotary roller shell; the roller shell has peripheral axially parallel orifices for the heat transfer medium which is supplied and discharged through at least one radial channel in the stationary axle and via at least one annular space between the roller shell and the stationary axle.

Abstract: Pot or bowl-shaped support for structures, especially bridge structures, consisting of a pot for receiving a pressure pad from an elastomer upon which rests a lid, which transmits the load of the structure or the bridge resting upon it to a foundation, abutment or pillar or the like, and in which an annular gap between the lid and the pot wall is sealed by means of an annular seal, where the annular seal is designed as a open, single part compact ring with rectangular cross-section which consists of a PTFE-material with amorphous consistency filled with a powdery substrate. Herein the share of the filler substrate amounts preferably to between 15 and 40% of the total volume of the annular seal and the filler substrate has a share of 50 to 100% of pulverized coal.

Abstract: A iron alloy material for the manufacture of brake drums, specially of massive and ventilated brake discs and other braking bodies, which has a pearlitic structure with a 5% maximum portion of ferrite, and a tensile strength of at least 200N/mm.sup.2 and consists essentially of:carbon in an amount of 3.62 to 3.68 weight %;silicon in an amount not exceeding 2.10 weight %;manganese in an amount of 0.70 tp 0.85 weight %;phosphorus in an amount of less than 0.080 weight %;sulfur in an amount of less than 0.095 weight %;chromium in an amount of 0.18 to 0.25 weight %;molybdenum in an amount of 0.30 to 0.45 weight %;copper in an amount of 0.30 to 0.45 weight %; andiron in an amount of 92.045 to 94.9 weight %.

Abstract: A heatable glazing or calendering roll has a roll body, peripheral bores in the roll body for the passage of a fluid heat carrier, a flange journal for each end of the roll body, supply and discharge conduits for the fluid heat carrier in at least one flange journal and cutouts for the distribution of the fluid heat carrier from the supply conduits to the peripheral bores and from the peripheral bores to the discharge conduits; the cutouts are disposed in the end faces of the or each flange journal and are bordered on the opposite side by the planar end face of the roll body.

Abstract: A device for treating a material web comprising a heating roller with at least one flow channel extending through the heating roller in its longitudinal direction, feed and return pipes for a heat carrier fluid flowing through the heating roller, a heating device for the heat carrier, and a counter roller, which is in contact with the heating roller; an additional heating device heats the heating roller from the outside; and a control unit connected to both heating devices heats or cools the heating roller as a function of predetermined operating conditions.

Abstract: There is provided a height adjustable rubber pot bearing for supporting or lifting bridges. The pot bearing has an elastomer plate for transmitting and lifting or lowering loads wherein pressurized fluid is introduced between the bottom of the pot and the elastomer plate to displace the elastomer plate. A narrow slot is provided extending around the plate a small distance from and parallel with the inner side of the pot. The slot opens downwardly and has a depth of three-fourths of the plate thickness. A circular cylindrical insert is provided in the slot consisting of two parallel strips joined at their top edge with a space between them, the bottom edges of the strips being angled at right angles to form edge strips extending parallel with the bottom in opposing directions.

Abstract: A reversible gear-type pump providing constant fluid delivery direction on alternating drive direction in which an eccentric ring receiving the outer rotor is pivotal through 180.degree. between two end positions by frictional engagement with the outer rotor wherein the eccentric ring is made contractible as a whole to establish the coupling engagement with the outer rotor and expandable to disengage the coupling engagement. The eccentric ring can be made in one piece from resilient material or can be formed from a plurality of arcuate segments which are pressed together by an annular spring engaging around them.

Abstract: A heatable glazing or calendering roll which includes a cylindrical hollow body, bearing journals for each end of the cylindrical hollow body, a displacement body arranged in the cylindrical hollow body, and supply and discharge lines in each bearing journal for a fluid heat carrier which flows through the annular gap between the displacement body and the cylindrical hollow body. A cylindrical flow chamber is provided at each end between the displacement body and the bearing journals and guiding means are arranged in each flow chamber, to accelerate the heat carrier at the inlet end in the peripheral direction and slow down the heat carrier from its peripheral speed at the outlet end, so that there can no longer occur any significant whirls. In this manner the otherwise occurring loss of pressure of the heat carrier can be reduced to a third or a quarter of the otherwise usual value.

Abstract: A height adjustable pot bearing is provided having a pot, a steel cover plate and an elastic plate of substantially incompressible elastomeric material disposed in and completely filling the pressure chamber defined between the cover plate and the pot. A circumferential slot is provided in the base of the elastic plate radially inwardly from the outer wall of the plate so that a circumferential lip is formed. The pressurized fluid supplied to the pressure chamber of the pot bearing presses against the base of the elastic plate to lift the elastic plate and the cover plate and forces the circumferential lip radially outwardly against the wall of the pot to seal thereagainst.

Abstract: An adjustable load support for lifting, lowering, and transferring heavy loads is provided, comprising a hollow container having a bottom, side walls, and a liftable top. A portion of the top protrudes into the interior of the container. An elastomeric mass substantially fills the remainder of the interior of the container. Sealing elements are also provided which seal the portion of the top of the container extending into the interior of the container with the side walls. A substantially flat diaphragm is located between the elastomeric mass and the bottom of the container. The diaphragm is substantially parallel to the plane of the bottom of the container but is not in contact with the side walls of the container. Means for introducing a pressurized medium between the diaphragm and the elastomeric mass through an opening in the diaphragm is also provided. When the pressurized medium is introduced into the container between the diaphragm and the elastomeric mass, the top of the container is lifted.

Abstract: In an elongated heatable roller for a machine for manufacturing tape-like material, such as a paper machine, and comprising an outer sleeve and a displacement cylindrical member disposed in the outer sleeve so that a clearance for passing a heat-conducting fluid is formed between the outer sleeve and the displacement member. Imbalance-compensating masses are provided for compensating for imbalance occurring on the roller and causing deflections of the roller. The imbalance-compensating masses are attached to the inner surface of the displacement member and preferably midway between the ends thereof.

Abstract: A storage silo adapted to difficultly flowing bulk materials to be discharged at the bottom of the silo. A baffle is disposed in a cylindrical container. The baffle is attached to the cylindrical container wall and runs inclined along said wall to the silo bottom. Baffle sections extend along a helical path over a central angle of at least about 360 degrees and are substantially continuously connected. At least some baffle sections following in circumferential direction along the silo wall are staggered with respect to each other increasing with the distance from the bottom. The baffle is preferably provided as a helical band. The pitch angle of the baffle relative to the cylindrical wall can be from about 15 to 30 degrees. A heating element can be provided to allow for heating of at least part of the baffle.

Abstract: An arrangement for manufacturing or treating a web material comprises a rotary hollow roll having a hollow jacket which has an axis, a central region around which a web material moves, and two axial end regions which are free from the web material, two bearing pins each supporting said jacket in a respective one of said end regions, at least one of which bearing pins has a passage for a heat-carrying fluid, a displacing member located inside the jacket and extending concentrically to and over the greater part of the jacket so as to form an annular gap between the displacing member and the jacket and communicating with the passage for heat-carrying fluid to supply the latter, and a heat-insulating element arranged at an inner side of each of the end regions of the jacket for reducing heat transfer from the heat-carrying fluid to the jacket.