Abstract: A device for manufacturing vehicle wheels having a rim which is wreath-shaped in cross section surrounding a cast wheel body is such that at least one die wall delimits the mold to be filled with cast metal. The prefabricated rim is laid between facing surfaces of a die plate and a center plate with the result that the die faces and the rim form the outer contours of the wheel body when the mold space between the die faces and rim is filled with molten metal which is introduced into the mold space under pressure. The rim itself is held by a clamping ring and can be removed in two pieces from the die assembly. A device for spraying a cooling medium onto the rim is provided on or in the clamping ring. The rim features on its inner face a central strut which is T-shaped in cross section, and on both sides of the actual struts are side struts which are inclined outwards. The free ends of the side struts are displaced by the surface of the die plates.

Abstract: The invention relates to a process for manufacturing crystalline alumina from aluminum hydroxide which after further conventional treatment is advantageously suitable for ceramic and refractory purposes or as a lapping and polishing agent. The process is such that aluminum hydroxide with a Na.sub.2 O content of .ltoreq.0.1 wt. % with respect to Al.sub.2 O.sub.3 is subjected either directly or after prior partial dehydration to a thermal treatment above the temperature for transformation to .alpha.--Al.sub.2 O.sub.3. The aluminum hydroxide has an addition of an ammonium containing mineralizer made to it, simultaneously in the presence of boron and/or fluorine, in particular an addition of NH.sub.4 BF.sub.4. The product is characterized by way of the essentially isometric shape of the single crystals.

Abstract: A portable apparatus for imparting continuous passive motion to a human joint. A support is provided for harnessing to parts of the body at one side of the joint and conveyor means movable relative to the support is provided for connection to a part at the other side of the joint, so that the latter forms a link which is flexed as the conveyor means moves back and forth relative to the support. Drive means insures that a substantially continuous slow rhythmic reciprocating movement is applied to the joint.

Abstract: A nozzle which can be used repeatedly for the supply of liquid metal is made up of individual, hollow, refractory sections fitted together side by side in a metal frame. The hollow elements of the nozzle may feature, in addition to at least one longitudinal channel for the supply of liquid metal, channels to accommodate heating elements also running in the longitudinal direction.

Abstract: A device for effecting multiple scarifications on spaced apart portions of a body has a rolling surface and a plurality of scarifiers extending outwardly of the rolling surface, in spaced relationship; the scarifiers sequentially penetrate the epidermis at spaced apart cutaneous sites when the rolling surface is rolled on the body part; in use the scarifiers support different freeze-dried allergen preparations on their outer scarifying ends.

Abstract: A process for the preparation of a rolled aluminum product, containing iron as the predominant alloy element, which has a grain size of less than 10 .mu.m after annealing to at least 250.degree. C., in which an alloy consisting of 0.8 to 1.5% iron, up to 0.5% by weight of each of Si and Mn, the sum of Si and Mn being between 0.2 and 0.8%, up to 0.3% by weight of any other component, the total of other components being no more than 0.8% by weight, and the remainder being aluminum, is casted at a solidification rate of 2.5 to 25 cm/min, the hot plate is cooled to less than 120.degree. C. at a rate of less than 0.5 K/sec and is then cold rolled with a thickness decrease of at least 75% without intermediate annealing, and the final annealing temperature does not exceed 380.degree. C.

Abstract: Granular solid particles, in particular hard, comminuted material of any given shape, are kept continuously in relative movement in a funnel-shaped container by means of a stream of liquid whereby they are rounded off. The rounded-off particles are suitable as filler material for wear-resistant coatings.

Abstract: This invention resides in a composition for treatment of meat, poultry, fruit and vegetables to maintain the color and to preserve same. The composition comprises as essential constituents between about 10 and 40% each of the following materials:(1) ascorbic acid and/or the sodium or potassium salts thereof;(2) citric acid and/or the sodium or potassium salts thereof;(3) sodium or potassium carbonate; and(4) sulfite, bisulfite or metabisulfite of sodium or potassium.These materials represent a synergistic combination which preserves the color and freshness of these products for a surprisingly long period of time.

Abstract: An asymmetric arrangement of busbars for conducting direct electric current is conducted from the cathode bar ends of a transversely disposed aluminum fused salt reduction cell to the anode beam of the next cell wherein a fraction of the busbars connected to the cathode bar ends on the upstream side of the cell are led under the cell such that the busbar configuration in the cathodic part of the cell is such that the variation in the asymmetry of the current leading the cell from the upstream cathode bar ends lies between 3 and 30%.

Abstract: A device for accurately controlled feeding of a fine-grained, free-running particulate material from a silo into a reactor vessel, in particular alumina from a day's supply silo to a break in the crust on an aluminium fused salt electrolytic cell, comprises essentially a vertical feed pipe which is situated below the silo and features upper and a lower closing flaps both of which are in the form of segments of a cylinder. The feed pipe mounted on the funnel shaped lower part of the silo features an outlet funnel which joins up with an outlet pipe.

Abstract: A continuously cast strand or ingot of metal is cooled as it emerges from the mold by applying a coolant directly to the surface of the strand. In order to prevent distortion at the foot of the ingot due to too abrupt cooling, polymers of molecular weight 10.sup.4 -10.sup.8 are added to the coolant at least during the initial phase of casting. By the addition of polymers to the coolant the kinetics of formation and discharge of vapor bubbles as the coolant strikes the ingot surface are significantly altered due to the reduction in the surface tension of the coolant; as a result of this an insulating film of coolant vapor forms on the surface of the ingot thus reducing the heat flow from the ingot.

Abstract: Protein is produced by bacterial degradation of rubber in a nutrient-containing, preferably sterile environment. The resultant protein is particularly useful as an animal feed.

Abstract: A device for automatically bagging lawn clippings in disposable plastic bags comprises a frame having a bag compartment mounted thereon for automatically feeding the plastic bags to a bag clamping unit positioned in communication with the discharge conduit of the power lawn tool. A moveable discharge conduit unit is provided and is moveable between a first bag loading position and a second operating position wherein the discharge conduit communicate with the discharge of the power lawn tool for delivering the lawn clippings to the plastic lawn bag.

Abstract: A process for upgrading heavy crude comprises the hydroconversion of asphaltenes and resins in the presence of steam and ammonia at high temperatures, followed by deasphalting to eliminate metals and remaining asphaltenes. By way of the process of the present invention, conversion of asphaltenes and resins is accomplished while at the same time insuring a low formation of gases and coke so as to obtain an end product with a high yield of distillates and low metal content. The process is particularly suitable for any type of heavy crude, for example those of the Orinoco zone, which possess a high content of asphaltenes and metals.

Abstract: A method and apparatus for removing oil particles and condensate from a stream of compressed air used in the production of snow by snow-making equipment wherein the condensate is first crystallized thus allowing the oil particles to adhere thereto and thereafter the crystallized condensate and oil particles are heated in a holding zone to form a liquid which is separated from the stream of compressed air and drained therefrom.

Abstract: Device for cooling semi-conductors wherein the cooler has an external surface for bearing against the cooled element. The cooler is characterized by an internal chamber having a plurality of spaced apart cooling studs.

Abstract: A control component such as a valve or throttle member for a hydraulic system comprises an outer member, and a body portion disposed in the outer member and having an outside surface co-operable with an inside surface of the outer member, the outer member and body portion being movable relative to each other. The flow duct extending between the inlet and outlet of the component includes at least one flow passage which opens at the outside surface of the body portion, and the mouth opening of the flow passage communicates with a curved duct portion which extends at an inclined angle relative to a radial plane through the body portion. The flow section of the or each duct portion decreases towards the tip thereof, to provide finely adjustable control of the flow of fluid through the component.

Abstract: A catalyst for use in the conversion of heavy hydrocarbons to light ones, the catalyst being prepared from a naturally occurring material characterized by an elemental composition comprising aluminum, iron, silicon, magnesium and titanium by the thermal and chemical treatment of the naturally occurring material with steam/H.sub.2 +H.sub.2 S so as to change the physical properties and surface chemical properties of the starting material.

Abstract: The solid cathode comprises essentially a supporting element and, at least in the region of the cathode workface, an open-pore structure which is impregnated with or soaked in aluminum saturated with at least one of the transition metals from groups IV B, V B, and VI B of the periodic table of elements, This open-pore structure can be fed continuously from reserves of aluminide/aluminides. An open-pore structure which has shown itself to be particularly advantageous is one comprised of a carbon fiber felt pad a few millimeters thick. The solid cathodes are economical and can be made from material which is readily made into a variety of shapes.

Abstract: Can lids made of metal, lacquered on both sides and featuring a pouring outlet covered over with a closure strip having a sealing surface of polyamide, often exhibit inadequate bond strength between the closure strip and the lacquered can lid surface. The bond strength can be increased if the can lid, after the closure strip has been sealed onto it, is heated until the polyamide melts and then the can lid with closure strip is subsequently cooled.