Abstract: The invention relates to a device for raising and withdrawing a bearing unit of a back-up roll of a roll stand. Said bearing unit is comprised of a piece to be inserted inside which has a roll pin bearing arranged therein. According to the invention, a change-over device is configured so that it can be temporarily coupled to the bearing unit and is provided for effecting an axial movement toward and away from the back-up roll.

Abstract: The invention relates to a method for producing 3-hydroxy-2-methylbenzoic acid or solutions containing salts of 3-hydroxy-2-methylbenzoic acid, with naphthalene as the starting substance. Said method essentially comprises the following steps: sulfonation, reaction with alkalis at high temperatures and the expedient preparation of the resultant reaction mixture.

Abstract: A casing has casing parts and fastening elements, wherein the casing parts are connected to one another by the fastening elements. The fastening elements are located inside the casing so that the exterior of the casing is free of projections and recesses. A first one of the casing parts has through openings into which the fastening elements are inserted, and a second one of the casing parts has threaded bores for receiving the fastening elements.

Abstract: The invention relates to an improved process for preparing 3-acyloxy-2-methylbenzoic acids by heating substituted naphthalenes in the presence of alkali metal hydroxides and subsequently acylating.

Abstract: An insulation material based on polymeric plastic is specified, to which glass particles that consist of types of glass with different softening points are added for stabilization in case of fire. To provide protection in a very broad temperature range, at least three types of glass with different softening points are used as the glass particles, namely, a first type of glass with a softening point below about 470° C., a second type of glass with a softening point above about 470° C. and below about 620° C., and a third type of glass with a softening point above about 760° C.

Abstract: The aim of the invention is to develop a hot rolling unit, comprising at least one continuous casting unit (1) with a post-arranged furnace (4), followed by a roughing stand (5) and, over a strip edge guide, a soaking furnace (15) and finishing train, such that downtime is reduced to a minimum level and even during said downtime, as well as in planned cases of withdrawal of pre-strip material, the pre-strip (14), behind the roughing stand in the soaking furnace, can be separated off from the normal rolling cycle.

Abstract: The aim of the invention is to develop a hot rolling unit, comprising at least one continuous casting unit (1) with a post-arranged furnace (4), followed by a roughing stand (5) and, over a strip edge guide, a soaking furnace (15) and finishing train, such that downtime is reduced to a minimum level and even during said downtime, as well as in planned cases of withdrawal of pre-strip material, the pre-strip (14), behind the roughing stand in the soaking furnace, can be separated off from the normal rolling cycle.

Abstract: The invention relates to an improved process for preparing 3-acyloxy-2-methylbenzoic acids by heating substituted naphthalenes in the presence of alkali metal hydroxides and subsequently acylating.

Abstract: A method of manufacturing a compound based on a thermoplastic, which may be cross-linked through irradiation using light lying in the ultraviolet range, is indicated. In this case, at least one photoinitiator and one cross-linking agent are added to a thermoplastic base material. To manufacture the compound, 0.2 to 3 parts of an alkyl benzophenone and/or a derivative thereof as a photoinitiator and 0.2 to 3 parts of a cross-linking agent and 0.1 to 5 parts stabilizers are added to 100 parts base material.

Abstract: A method of controlling a temperature of a surface of a direct chill cast ingot cast in an open-ended mold provided with a bottom block during early stages of casting as the ingot emerges from the open-ended mold. The method involves the steps of directing a flow of a coolant onto at least one surface of an ingot emerging from an open-ended mold to impinge on the surface at a normal impingement point and to cool the surface, measuring a surface temperature on the emerging ingot at at least one measurement location which is at a predetermined position close enough to the normal impingement point to be affected by the secondary coolant, to generate a measured surface temperature, determining the displacement of the bottom block of the casting machine from its initial position at the start of the cast, corresponding to each the surface temperature measurement, and using the measured surface temperature to control a casting variable and thereby to control the temperature of the surface.

Abstract: A sealed roll bearing of a roll which has neck sleeves of high strength, preferably shrunk onto the roll necks of the roll, wherein the flanges of a profiled sealing ring sealingly engage over the end portions of the neck sleeve facing the end faces of the roll bodies and at least over portions of the end phases of the roll bodies. The flanges of the profiled sealing rings engaging over the end faces of the roll bodies are connected to the end faces of the roll bodies and the flanges of the profiled sealing rings engaging over the end portions of the neck sleeves surround the flanges of the profiled sealing rings engaging over the end portions of the neck sleeves so as to form a narrow gap, wherein the narrow gap is sealed by means of at least one sealing device.

Abstract: A drawer locking mechanism for at least two drawers (6, 6') arranged one above the other has locking slides (13, 13') whose height is adjustable in a guide (7) along a setting axis (12). Setting elements (22, 22') with setting slots (29, 29') are attached with the slides between front panel (9, 9') of the drawer and the guide (7) arranged on the inner face of the side wall (2) of the body (1). Furthermore, the setting elements (22, 22') have two engagement regions which secure the setting elements (22, 22') in their respective angular positions corresponding to a pushed-in or pulled-out position of the drawers (6, 6'). Accordingly, control pins (31, 31'), associated with the side walls of the drawers (6, 6') as viewed from the front panels (9, 9') of the drawers (6, 6'), are positioned in front of the guide (7). Thus, the control pins do not have to pass the guide when the drawers are opened or closed, thereby improving utilization of space.

Abstract: A cartridge case especially for firing in handguns has a primer receiving pocket provided in the bottom or rear portion as a cylindrical recess, into the top of which at least one flash hole terminates, a primer cap mounted flush in the primer receiving pocket including a cup-shaped capsule having a capsule bottom and a cylindrical side wall, and with a primer charge and an anvil located inside the capsule.To improve gas tightness in the direction of the breech of the gun, especially in the use of pollutant-free primer charges, the primer receiving pocket is provided in the vicinity of a side wall of the capsule with an annular circumferential expansion zone, so that the anvil has room to deflect after ignition of the primer charge and expansion of the capsule.

Abstract: The display unit comprises an optical waveguide (3) which is made of polycarbonate with admixtures of titanium dioxide and at least one fluorescent, light-converting organic dye. This achieves a uniform brightness distribution.

Abstract: A shaft cooler for dry quenching of coke includes an inner masonry ring that is an independent structure suspended on the top edge of the outer masonry of the shaft cooler. The weight of the inner masonry ring is carried by stays which bear on the top edge of the outer masonry. The tubular stays are disposed in one embodiment inside the masonry ring and in another embodiment outside the masonry ring. The tubular stays are connected to ring mains for conducting a coolant medium. When the tubular stays are disposed outside the masonry ring, parallel tubes are interconnected along their entire length by webs to form a closed steel ring. Ring tubes are welded to the top and bottom ends to serve as a heat exchanger and are connected to the evaporator section of a waste-heat boiler of the shaft cooler. Flue-gas passages are formed at the bottom edge of the masonry ring by radially, spaced-apart webs.

Abstract: A button for surgical applications comprising a disk having a slot which extends to a passage for guiding a thread therethrough within the circumference of the disk, said passage being sealed by a clamping device for clamping the thread firmly in the passage. The clamping device includes a disk segment movable parallel with the disk over the slot and passage to a latched position where its inner marginal part is past the passage thereby bending the thread and holding it by friction and compression.

Abstract: Winding device for metal strips, in which the metal strip is braked between two rollers which are pressed against one another. One of the rollers has a larger angle of wrap for the metal strip of at least 75.degree. and the other roller has a smaller angle of wrap for the metal strip of 45.degree. at maximum. The one roller with the larger wrap includes material on its periphery having a coefficient of friction for the material which is at least 20% lower relative to the braked metal strip than the coefficient of friction of the peripheral material of the other roller with the smaller amount of wrap.

Abstract: In a process for treating surfaces by means of a jet of liquid impinging on the latter at high velocity and with which, in particular, scouring or polishing solid particles, such as steel granules, corundum, sand, chalk or the like are admixed, the liquid jet is, after it has impinged on a surface to be treated, at least once returned to a surface to be treated for the purpose of exploiting the residual kinetic energy of the liquid. In a preferred form of the invention, the jet impinges on the surface at an angle of between 30.degree. and 80.degree. and is, after reflection from said surface, returned to the latter to impinge thereon at an angle of between 40.degree. and 90.degree.. In a particular embodiment of the invention, a sheet metal strip is guided along a loop and the jet impinges on a concave region within said loop.

Abstract: A cooling capsule for a thyristor wherein the capsule is provided with a metallic core having at least one heat transfer surface and with a plurality of bores extending between surfaces of the core so as to form a meander-line-like flow path therethrough between an inlet opening and an outlet opening. The aforesaid surfaces between which the bores extend are provided with recesses each of which connects adjacent pairs of bores and the capsule is further provided with plate-like members, each of which covers a recess and is joined thereto by electron beam welding.