Abstract: The bone implant for prostheses, particularly joints or joint members, preferably joints of the human locomotor system and especially the walking system, contains a shaft insertable into a cavity in a bone. The shaft has a total cross-section increasing from its diaphysis-associated distal end to its metaphysis-associated proximal end. Preferably, The shaft possesses in the region of the metaphysis-associated proximal end an integrally formed or separate intermediate piece at which the joint or joint member can be arranged. The shaft is preferably immediately and securely anchored in the bone and particularly is made of a metallic material. The shaft possesses an oblong rotationally symmetrical shaft body having an outer surface generated by, if desired, a longitudinally curved or preferably a substantially straight generatrix. The shaft body substantially has the shape of a truncated cone.

Abstract: The device for pressure-aided molding of shaped bodies formed from high-molecular masses, preferably of small dimension, comprises at least one preparation chamber having at least one plasticizing or transport and mixing screw conveyor and at least one charging port for filling the preparation chamber with preferably thermally plasticizable and possibly molecularly cross-linkable molding mass. The preparation chamber flow communicates with a pressure-tight transition with at least one storage chamber for plasticized polymer. The storage chamber opens into at least one mold cavity filling conduit for charging a mold with molding mass. The device also comprises a drive mechanism for translatory-relative motion of the preparation chamber and the mold cavity filling conduit. The preparation chamber has at least one prolongation.

Abstract: The weapon barrel comprises a liner and at least one jacket tube. The liner is made of a highly wear-resistant material, like a cobalt or nickel base alloy, and the jacket tube is made of a tough alloy, like steel. In the manufacturing process the liner material is packed into the jacket tube in the form of a powdery material which may be pre-pressed or pre-sintered. The packing is arranged such as to leave a central free space in the jacket tube, and the jacket tube may be surrounded by an encapsulating tube. The jacket tube or the encapsulating tube is closed either before or after evacuation, and the closed tube arrangement is subjected to a combined heat and pressure treatment at temperatures of at least 900.degree. C., but below the melting point of the relevant materials and at pressures of at least 900 bar. The compound body thus obtained is formed with a full-area metallic bond between the liner and the jacket tube.

Abstract: The liquid jet cutting machine contains at least one cutting head provided with an apparatus for producing high-pressure liquid at pressures in excess of 1000 bar. The cutting head delivers a high-pressure liquid cutting jet and is preferably movable or guideable along a predetermined cutting path. An apparatus is provided for holding the workpiece to be cut at least during the cutting operation. At least the high-pressure liquid producing apparatus, preferably inclusive of a drive and/or auxiliary aggregate, the cutting head, the holding apparatus and a cutting jet collector are connected with a common frame and form a positionally displaceable transport unit. The cutting head is preferably automatically controllable in its movements by a guiding apparatus which constitutes an industrial robot. The holding apparatus may also perform controllable movements and preferably contains an infeed and/or outfeed device for the workpiece to be cut, as well as a drain device for the spent jet liquid.

Abstract: A mobile metering apparatus is provided for metering into a liquid stream or flow an agent which is to be metered or dosed in a quantitative proportional relationship. The metering apparatus contains liquid meter through which passes the liquid flow and a metering pump connectable to a dosing agent reservoir on the input side thereof and to a metering location at the output side thereof. The metering pump meters the agent from the reservoir into the liquid flow as a function of signals supplied by the liquid meter. The liquid meter is installed in a short conduit portion provided with an inflow connection and an outflow connection. The short conduit portion, liquid meter and metering pump are mounted at a supporting frame enclosing the aforementioned members on all sides. The drive of the metering pump is accomplished by the pressure of the liquid flow.

Abstract: A work-hardenable austenitic manganese steel has a base composition (each in percent by weight) of 0.7 to 1.7 carbon, 5.0 to 18.0 manganese, 0 to 3.0 chromium, 0 to 4.0 nickel, 0 to 2.5 molybdenum, 0.1 to 0.9 silicon, up to 0.1 phosphorus and contains micro-alloying elements of 0.0 to 0.05 titanium, 0.0 to 0.05 zirconium and 0.0 to 0.05 vanadium; the remainder being iron and impurities arising from the melting process. The ratio of carbon to manganese is in the range of 1:4 to 1:14 and the total amount of micro-alloying elements is limited to a range of 0.002 to 0.05 percent by weight. The melt of the base composition is tapped at 1,450.degree. C. to 1,600.degree. C. into a casting ladle in which the micro-alloying elements are added. An ingot is cast, cooled, reheated to austenitization temperatures and quenched.

Abstract: A method of regulating the melting rate of a self-consumable electrode during electroslag remelting in a slag bath, wherein the lowering speed of the electrode which is to be remelted, the length of which is determined, is regulated in consideration of maintaining a set or reference value of the melting rate and the current intensity and/or the potential. There is continuously determined the weight of the part of the electrode immersing into the slag bath from the actual total electrode weight and the length of the electrode above the surface of the slag bath and such is compared with a set or reference value and altered when there is present a deviation of the quotient U.sub.Ref and J.sub.Ref, wherein the former represents the reference potential or voltage and the latter the reference current, and the product remains constant. The actual melting rate is compared with a set or reference melting rate and when there is present a deviation there is correspondingly altered the product of J.sub.Ref and U.sub.Ref.

Abstract: The apparatus for sealing a movable member with respect to a liquid medium, especially an oscillatory movable plunger or a rotary shaft within the bore of a high pressure installation comprises an intermediate sleeve, a ring member, and a bushing which are successively arranged with respect to a pressure space or chamber and which are axially biased towards the pressure space by a pressure sleeve. On the side remote from the pressure space the ring member is provided with a recess in the shape of a truncated cone or pyramid. On the side facing the ring member the bushing is formed with a protrusion possessing a complementary truncated cone or pyramid shape. A support ring may be arranged between adjacent surfaces of the ring member and the bushing. On the side facing the intermediate sleeve the ring member has a section of reduced diameter surrounded by a biasing ring subjecting the ring member to a radial force directed towards the movable member.

Abstract: A method of and apparatus for producing consumable electrodes with large diameters to be used for remelting involves assembling the electrode of individual longitudinal parts adjacently arranged. Which longitudinal parts are continuously cast in special moulds as strands having polygonal cross sections. The parts are assembled so as to form a polygonal overall cross section, and their end faces are welded together with a common gripping head for the electrode holding device.

Abstract: In a method of and apparatus for producing ingots of unalloyed and alloyed steels having an improved primary crystallization, reduced ingot segregation and a reduced content of non-metallic inclusions, molten steel is poured into a mould, a slag mixture is supplied onto said steel, energy is supplied to the slag mixture while the steel is solidifying in the mould, and the upper rim zone of the molten steel bordering on the slag mixture is cooled.

Abstract: In a method of producing ingots of unalloyed and alloyed steels having an improved primary crystallization, reduced ingot segregation and a reduced content of non-metallic inclusions, liquid steel is poured into a mould in an amount substantially approximately equal to the desired weight of the ingot to be obtained, slag is applied to the steel and energy is supplied to the already melted slag to maintain the liquid core zone of the slag at a high temperature, while the walls laterally confining the slag are cooled to create and maintain a layer of solid slag in that area, the energy supply to the slag is effected by resistance heating by means of at least one consumable electrode having a chemical composition identical or similar to that of the ingot, and the quantitative composition of the at least one consumable electrode is selected in a manner as to obtain a concentration of segregating elements in the amount of steel melted off per time unit that is lower by that amount in which the concentration of seg

Abstract: A cutter block arrangement for wood chipping machines has blades mounted in blade holders that are fastened to holding ledges by means of a tongue and groove connection. The holding ledges are mounted in a groove of the cutter block body by means of fastening screws. The blades have cutting edges and are positively inserted in the blade holders, while the holding ledges are supported relative to the cutter block body by means of adjusting screws counteracting the fastening screws so as to adjust a certain projection of the cutting edges of the blades.

Abstract: In a method of and apparatus for producing ingots of unalloyed and alloyed steels having an improved primary crystallization, reduced ingot segregation and a reduced content of non-metallic inclusions, molten steel is poured into a mould, a slag mixture is supplied onto said steel, energy is supplied to the slag mixture while the steel is solidifying in the mould, and the upper rim zone of the molten steel bordering on the slag mixture is cooled.

Abstract: An electroslag remelting or refining method and arrangement for removing undesired elements, particularly H.sub.2 and O.sub.2, from metals. A water-cooled mold having a bottom plate is adapted to being raised in known manner. A growing metal ingot solidifying in the mold has a solidified portion and a liquid metal sump portion. A layer of molten slag covers the liquid metal sump. A self-consuming electrode extends into the slag. An a.c. source is connected between the electrode and bottom plate. Oppositely-poled auxiliary electrodes are included which are in electrical contact with the slag cover, the auxiliary electrodes being connected to opposite polarity terminals of a d.c. source.

Abstract: A process for casting steel ingots, wherein the steel from a ladle is cast under vacuum through the lid of a container which can be evacuated, into a mould, and wherein covering powder or anti-piping compound, respectively, is evenly applied upon the surface of the molten steel in the mould while the vacuum is maintained.

Abstract: A vessel is formed with a peripheral flange upon which a lid is positionable to form a chamber within the vessel. The lid and flange are provided with juxtaposed grooves carrying a sealing member therebetween and a locking strip around the periphery of the pressure vessel for engagement with bolts secured to the lid.