Abstract: A multiway cock has a housing with three separate pipe connections disposed in a T-shaped arrangement. A spherical cock plug is located within the housing. Two bearing bosses are provided on the housing offset by 90.degree. relative to one another for providing two different mounting locations for an operating element which selectively positions the cock plug. Different arrangements of the multiway cock can be provided by selectively locating an operating element in one of the bearing bosses while using the same parts for the cock.

Abstract: An adapting piece of thermoplastic material includes at least one welding sleeve portion with an electrical heating device formed by two heating mats arranged next to each other in circumferential direction. The welding sleeve portion has at least one radial incision extending in axial direction. By means of a clamping nut, the welding sleeve portion can be braced together with the heating elements against a tubular piece inserted in the welding sleeve portion. As a result, the pieces are fixed and supported before and during welding.

Abstract: A process for the manufacture of cast iron containing vermicular graphite is described, in which nodular cast iron (GGG) is used as a starting melt. The GGG melt can be produced in a converter in a precise and reproducible way, whereby the sulphur and oxygen contents of the GGG melt are limited within narrow ranges. Additional sulphur is added to the GGG melt in an amount determined by an empirical formula depending on the magnesium and sulphur contents of the GGG melt to produce cast iron containing vermicular graphite (GGV). The GGV is produced by the present process with precision and in a reproducible manner.

Abstract: An optical electronic method for the measuring of a workpiece is disclosed. A beam of radiation is used to illuminate an edge of the object to be measured to form an actual diffraction pattern. The actual diffraction pattern is converted to electronic signals by means of a sensor and correlated electronically with a predetermined theoretically calculated diffraction pattern.

Abstract: A cutting tool assembly including a pair of articulated arcuate strap members adapted to be clamped about a cylindrical pipe for cutting about the circumference of the pipe. A guide mechanism is provided including a pair of roller members engaged about the periphery of the pipe member to be cut and a guide part on a cutting tool, which guide part cooperates with the roller members.

Abstract: A treating device for mechanically treating the outer circumferential surface of tubular components. The treating device includes a grinding tool and is rotatably mounted on an internal chuck. The internal chuck is chucked by means of chuck jaws concentrically relative to the inner diameter of the tubular component. The grinding tool includes a drive shaft and a drive motor and is eccentrically mounted in a bushing which can be swivelled by means of a worm drive. By swivelling the grinding tool, the grinding tool is moved toward the tubular component for the appropriate processing depth. Subsequently, the outer surface of the tubular component is treated by rotating the treating device about the internal chuck.

Abstract: The method of manufacturing the compound camshaft comprises the steps of placing cast journal or bearing elements and/or cast cam elements on a camshaft body and fixedly connecting or securing such elements at the camshaft body. The cast journal or bearing elements and/or the cam elements contain an opening which is bounded by an internal profile or contour having a configuration which is governed by the type of connection to be made between such elements and the camshaft body. The internal profile or contour may be of a substantially conical shape and is at least partially left in a mechanically untreated condition. The compound camshaft thus obtained is optimized with respect to wear and weight and there are neither required cost-intensive and time-consuming operations, especially machining operations, nor complicated working steps during the manufacturing process.

Abstract: The vehicle wheel comprises a rim containing an external closed ring and an internal rim ring composed of three segments and connected to a segmentally separated or segment-shaped divided disc. The beads of the pneumatic tire lie in grooves disposed between the external closed ring and the internal rim ring. Each of these grooves is formed by a bead seat, a vertical web and the external closed ring. Due to the internal pressure of the air in the pneumatic tire, each tire bead is drawn against clamping surfaces of the associated groove and sealed in relation to the external closed ring.

Abstract: An impact device and a turning device are arranged with a sound-insulating cabin and are operatively connected with one another through roller conveyors and lifting tables. Castings conveyed into the decoring station by means of conveyor pallets are clamped in a clamping frame. An impact device for decoring the casting imparts percussions on the clamping frame. Subsequently, the loosened core sand is removed from the casting in a turning device.

Abstract: A process for the production of nodular cast iron is disclosed. The process comprises adding magnesium to molten iron and then desulphurizing the melt. Next, the melt is after-treated with a neutral gas. The neutral gas which is introduced into the melt may be Ar, N.sub.2, CO.sub.2, or any combination thereof. The after-treatment with the neutral gas scavenges the melt for nonmetallic inclusions. The after-treatment may be performed by blowing the gas into the melt in a known manner using blowing lances or through a porous plug. In a preferred embodiment, the melt is also carburized by treatment with a gaseous hydrocarbon.

Abstract: A compact and re-usable ingate device for transferring molten metal to a mold during casting employs a substantially unitary structure resembling a trapezoidal block of refractory material. Within the block are a generally cylindrical rotation chamber, an inlet channel which receives the molten metal and injects it tangentially into the rotation chamber, so that the metal swirls rapidly to separate nonmetallic inclusions, and an outlet channel which conveys the cleaned metal to the mold. The rotation chamber may have a bottom that is positioned below the opening to the outlet channel and walls which slope outward slightly from the bottom to at least the opening, so that inclusions and metal that has solidified at the bottom can be removed from the rotation chamber. Alternately the outlet channel may open into the bottom at an eccentric position, so that all of the molten metal will be drained.

Abstract: A ceramic filter for filtering molten iron is disclosed. The ceramic filter is made from a high-melting ceramic material having an open-celled foam structure, a variable bulk density in different portions of the filter, and at least one afflux surface. In order to filter molten iron efficiently, the ratio of filter surface to filter volume should be in the range of about 0.0003 to 9 m.sup.2 /cm.sup.3, the specific filter resistance should be in the range of about 0.1 to 0.9 bar-cm at a flow rate of 5 m.sup.3 /hour, and the pressure loss .DELTA.p across the filter should depend on the specific resistance .rho., the filter length, and the surface area of the afflux plane F in accordance with the relationship: ##EQU1## A method for filtering molten iron using this ceramic filter is also disclosed. In this method, the ceramic filter is located near the point in the casting system where the molten iron has its greatest kinetic energy.

Abstract: A flange connection of pipe pieces having an outer layer composed of a laminate and provided with grooves. A two-part sleeved collar of the same material is radially placed onto the pipe piece. Projections provided on the radially inner surface of the flanged sleeve are placed in the grooves. The two parts of the flanged sleeve are fixedly connected to the pipe pieces by means of gluing, the two parts of the flanged sleeve being held together until the adhesive has cured by means of a flange ring slid onto a conical portion of the flanged sleeve. A cover ring is fastened to the end of the inner layer of the pipe piece made of a thermoplastic material, so that the medium conducted through the pipes does not come into contact with the couter layer and the flanged sleeve.

Abstract: A device for trimming two opposite edges of veneer to provide parallel edges uses optical apparatus to scan the edges and determine the maximum width to which the veneer can be trimmed. The veneer is scanned at an inlet table upstream in the feed direction from a trimming apparatus in which previously checked veneer is cut to the determined width. The width to be cut is stored in a controlled device. When the trimming apparatus completes the cutting of the previously checked veneer, the control device sets the trimming apparatus for the width of the veneer to be cut and the veneer is moved from the inlet table to the trimming apparatus and is cut.

Abstract: A centering arrangement for aligning a wheel hub with a brake drum is disclosed. The centering arrangement includes a wheel hub, a spoke portion of substantially three-dimensional, circumferential wave shape, and at least three centering pins. The centering pins are formed as ribbed elements and are disposed in a zone remote from the regions of stress occurring in the wheel hub during operative use. Preferably, the centering pins are disposed in the wave troughs of said spoke parts.

Abstract: A prefabricated assembly for forming a high tensile strength pipe connection is formed by providing a metallic muff and pressing one end of a pipe adapter made from plastic material into the muff. The metallic muff has an internal diameter formed with sawtooth projections which penetrate the material of the pipe adapter and the penetration is enhanced by inserting a smooth support sleeve into the pipe adapter, the support sleeve being stiffer than the pipe adapter and operating to effect a positive and frictionally locking connection. The opposite end of the pipe adapter may then be attached by welding or the like with a plastic material pipe to form thereby a tight connection at a utilization site.

Abstract: A method for regulating the flow volume of a fluid medium and apparatus therefor wherein the actual value of the flow volume of the fluid medium is measured and an analogous signal is generated representing the actual value. A signal representing a desired value of flow volume is also generated and is compared with the actual value signal with the analogous differential signal being applied as an electrical control signal consisting of individual pulse signals having a frequency proportional to the value of the analogous differential signal. The control signal is amplified and applied to control either the pressure or the rate of flow of the fluid medium.

Abstract: A system for heat-sealing thermoplastic conduits involves a thermoplastic sleeve surrounding an electrically conductive heating wire arranged in a coil. A bridging conductor is located adjacent the heating element, but is separated from it by an insulation layer of predetermined thickness. When the sleeve is heated by supplying electric power to the heating element, the entire heating element generates heat during a first phase in which fusion pressure is applied between the sleeve and pipes being connected. The bridging connector is forced into contact with selected coils of the heating element to initiate a second phase. In the second phase, the heat produced in the area of the selected coils is automatically reduced by short circuiting such coils.