Abstract: Manufacture of a light metal shock absorber by impact extrusion of the light metal of a steel-light metal composite blank, wherein the metallic bonding of the composite blank is achieved by coextrusion. The steel component on the bottom face of the light metal shock absorber is provided with a steel ring which is welded or otherwise appropriately joined during or after impact extrusion. Also the light metal sleeve of the shock absorber can, after impact extrusion, be welded or otherwise appropriately joined to light metal.

Abstract: A device for conducting the electric current from the cathode of a hooded, transverse electrolytic cell to the anode of a neighboring cell via cathodically polarized carbon blocks in the pot of a cell, cathode bars and individual conductor bars wherein the current from each cathode bar is passed under a cell to a compensating conductor bar which runs around the neighboring cell. This compensating conductor bar is connected to each anode of the cell it runs around via a flexible conductor strip. Each anode is provided on its uppermost side with a yoke which is inserted and firmly secured in place, together with the conductor strip, in a notch or recess provided in a device for holding the anode in place.The anode holding device remains in place during anode changes and can be adjusted vertically by means of a motor or the like as a function of the voltage or the desired interpolar distance between anode and cathode.

Abstract: The precipitated liquid metal in a cell for the electrolytic production of aluminum contains, with the exception of its uppermost, freely moveable layer, an electrically conductive granular material.At least one trough containing molten electrolyte saturated with aluminum oxide is provided outwith the vertical projection of the anode or anodes. The top of the trough lies above the surface of the liquid metal, but is always at least partly below the surface of the electrolyte.The direct electric current is conducted away from the molten metal by cathode elements which are wet by aluminum.

Abstract: An arrangement of busbars leads the direct electric current from a transverse electrolytic cell in particular such a cell for producing aluminum, to the anode beam of the next cell. The self consistent magnetic field of the cell is almost completely compensated if, at the upstream cathode bar ends, at least two individual or groups of cathode busbars and connecting busbars lead to a busbar connected to the downstream cathode bar ends or to a riser. A part of the connecting busbar runs completely under the cell at the middle; the other part likewise runs under the cell until it is in the region of the longitudinal axis (L) where it follows this axis until it projects out beyond the end wall of the cell, and finally runs along the cell.

Abstract: Low cost protective coating composition. The coating composition is the reaction product of at least one polyurethane-forming reagent containing a plurality of isocyanate groups and a material selected from the group consisting of cyclopentadiene, dicyclopentadiene, derivatives thereof, and mixtures thereof.

Abstract: Substantially spherical, water-degradable, sulphur clay particles or prills are provided; the particles are formed by passing a mixture of molten sulphur and a particulate swelling clay through a plurality of orifices and into an aqueous solution of a water soluble electrolyte salt, maintained at a temperature effective to cool the mixture below its solidification temperature. An improved apparatus is also provided in which a high constant static head of molten material is let down to a low static head whereby molten material at low velocity falls under gravity into the aqueous electrolyte salt solution.

Abstract: The durability of oxide-ceramic anodes can be increased, if the aluminum surface which lies opposite the active anode surface and is in direct contact with the molten electrolyte, is smaller than the active anode surface. The separated aluminum is collected on the floor of the carbon lining and is sub-divided by an insulating material into pools, which are connected together by means of tubes or channels. The total of all the aluminum surfaces exposed to the melt amounts to 10-90% of the active anode surface.

Abstract: The present invention resides in an improved ceramic foam filter particularly useful for filtering molten metal and also an improved aqueous slurry for use in preparing same.

Abstract: The apparatus serves particularly for the continuous charging of extractors for oil-containing vegetable raw materials, wherein highly flammable, low-boiling solvents, such as benzene, hexane, heptane etc. are used as extractants or solvents for the glyceride constituents to be extracted. The apparatus, which is provided between the preparation (comminution) of the raw material and the extraction plant proper, comprises an equalizing vessel having a mixing zone and a double screw disposed at an inclination with respect to the horizontal wherein the spacing of the screw turns, in the area of the vessel, increases continuously in the direction towards the discharge outlet.The inclination of the screw is such that the space defined by the base of the screw and an imaginary line is constantly filled.Equalizing vessel, mixing zone and screw are interconnected to form a tightly sealed unit.

Abstract: A rotor centering device comprising two radial bearings each one constituted of first and second opposing members with angular contact races, mounted with axial clearance so that if one of the said members is in abutment, the other member has a radial clearance. The first angular contact centering members of the first and second bearings are also opposing, and the second angular contact centering members of the first and second bearings are likewise opposing, so that by relative axial movement of the inner and outer contact races of both first and second centering means belonging to the two bearings, simultaneous contact of the inner and outer faces is achieved either with the first centering members or with the second centering members which happen to be opposing on the two bearings.

Abstract: Method for the preparation of oriented hollow articles of moldable organic plastic material which is characterized by a rapid operating cycle and a final article free from objectionable capacity. The disclosure teaches an injection molding station for controlled removal of parisons after altering the heat content thereof under conditions avoiding crystallization and thereby freeing the injection station for the formation of a second parison.

Abstract: Device and method for breaking open the solidified crust of electrolyte on an electrolytic cell, in particular a cell for producing aluminum. At least one projection is provided on the lower part of the shaft of a chisel used on a crust breaker. After breaking through the crust, the chisel is lowered further at least until the lowest projection or projections reaches the lower half of the crust.

Abstract: A solid cathode in a fused salt electrolytic cell for the production of aluminum is made up of individually exchangeable elements (10). These cathode elements are made up of two parts which are rigidly joined together and which are resistant to thermal shock. The upper part (12) which projects from the molten electrolyte (30) into the precipitated aluminum (26), or the coating on this part (12), is made of a material which, at working temperature, is a good electrical conductor, is chemically resistant and is wet by aluminum. The lower part (14,16), which is exclusively in the liquid aluminum (26), or the coating on this part (14,16) is on the other hand made of an insulating material which can withstand molten aluminum.

Abstract: The invention describes a process for the production of coarse crystalline alumina from aluminum hydroxide, which after preparation by known methods is advantageously useful for abrasives, lapping and polishing purposes or for refractory materials. The process is characterized by aluminum hydroxide, either directly or after previous partial dehydration in the range 200.degree.-550.degree. C., being added with a mineralizer of compound type x(BF.sub.4).sub.n, wherein x stands for NH.sub.4 and metallic elements and n is for the formal valence of x, and subsequently is subjected to an elevated temperature treatment between 750.degree. C. and a value higher than the phase change temperature to .alpha.-Al.sub.2 O.sub.3.

Abstract: Device and process for operation of open baking furnaces, in particular such ring-type furnaces for manufacturing anodes for the aluminum electrolytic process, are such that for each so called fire the sealing chamber and/or chamber in the cooling zone can be saved in that the flue gas exhaust manifold is not situated on the headwall but instead on the flue and/or the opening of that headwall on which the last fresh air supply manifold is situated is closed off by a sliding baffle. Openings corresponding in cross section to that of the connected part of the flue gas exhaust manifold are provided in the region of the flues.The advantage of the process lies in the greater flexibility in furnace operation, which results either in an increase in production or an increase in product quality.

Abstract: Method and apparatus for forming oriented, blown objects of moldable plastic material requiring prolonged tempering cycles to obtain conditions suitable for orientation. Disclosure provides a multiplicity of tempering molds in spaced relationship to each other for retaining and tempering parisons prior to orientation and blowing in a tempering cycle, whereby the tempering molds receive and release parisons seriatim, and whereby the overall operating cycle is substantially unaffected by the number of tempering molds.

Abstract: An insulating coating of extruded polymer material is formed around a moving conductor wire; the extruder includes a decompression zone effective to arrest shear degradation of the polymer such that the melt index of the insulating polymer on the insulated wire is not more than 50% of the melt index of the solid, particulate polymer material before extrusion; the extruder includes valve means and intense mixing means which ensure that the polymer melts in a controlled manner whereby a uniform extrudate is formed.

Abstract: The present disclosure is drawn to a blind and more particularly a portable blind of two piece construction which is easily and readily assembled on location. The portable blind comprises an umbrella portion and a skirt portion which, upon assembly, are fixedly secured together so as to form a unitary camouflaged enclosure.

Abstract: The process of the present invention allows for the manufacture of lacquered aluminum or tin-plate rings which have the inner edge thereof bent over outwards so that they are suitable for the closures on cans for foodstuffs. A ring blank made of lacquered sheet is pre-shaped by deep drawing to form the curvature needed for bending over the inner cut edge. The final shaping of the pre-shaped blank into a ring for a can lid takes place, after stamping out the opening, by stretching and bending over the cut edge. When a tear-back membrane is sealed on to the bent-over edge, the ring is suitable as an easily opened closure for cans for foodstuffs.