Abstract: A shock absorber installation tool is provided for installing shock absorbers together with a method for installing shock absorbers in automobiles and other vehicles. The shock absorber installation tool comprises an elongated member having at one end means for engaging the upper shaft of a shock absorber and at the other end means for guiding and positioning the upper shaft of the shock absorber in the shock absorber bearing support to provide a relatively easy and efficient method for installing shock absorbers. The tool for installing shock absorbers together with the method for installing shock absorbers allows shock absorbers to be removed and installed in MacPherson and MacPherson type strut assemblies with a minimum of mechanical operations and tools which have heretofore been required for the replacement and installation of shock absorbers.

Abstract: An integral fin/tube combination of extruded aluminum wherein the fins are shredded into parallel radial strips which are bent into alternately upwardly and downwardly peaked configurations. Shredding may be accomplished by means of a die set.

Abstract: A method and apparatus for fabricating reinforcing bands for strengthening arts to be subjected to high centrifugal stresses. The reinforcing bands are made of coiled wire with a high modulus of elasticity and with a matrix of light metal or light-metal alloy. The coil, hoop or blank so formed is compacted in a direction parallel to its axis under high pressure and heat by an annular metal ram in a mold or die consisting of a bottom member, an inner ring, and an outer ring which are constructed so that the blank or coil does not undergo any radial stresses.

Abstract: A method and apparatus for recovering and reusing solder following the removal from radiators or the like requiring repair. The solder is melted or otherwise removed from the radiator core, heated, formed into billets, trimmed to remove foreign particles and then placed into a short stroke extruding machine forming the solder into a continuous strand which is coiled and reused. To achieve the maximum stroke with the minimum space the extruding mechanism includes a pivotably mounted ram within a framework adjacent the die chamber and includes as an integral portion thereof a particularly designed trunnion having an elongated hole to receive the bearing and a flat portion whereby the full extrusion force is absorbed by the end plate of the framework without undue stress being placed upon the bearing itself.

Abstract: A method is provided for partially densifying a selected surface portion of a sintered porous powder metal element while applying restraining pressure to other selected portions of said element in order to inhibit growth and cracking of said element during the partial cold deformation thereof. The method is particularly applicable to the production of annular bearing rings.

Abstract: A process for making modular element for heat exchangers with thermoplastic tubes consisting of a plurality of tubes connected to one another by spacers located at intervals allowing the mutual tape-like positioning of the tubes. Also a process for making a tube nest consisting of a plurality of such modular elements.

Abstract: The heat exchanger is formed by wrapping a metal sheet about a water storage tank to define an intermediate cylinder and positioning an outer cylinder over the intermediate cylinder in sealed relation therewith to provide a relatively wide annular space about the water tank. Fluid heated by solar energy is circulated through this annular space to heat water in the tank by heat exchange through the intermediate cylinder and tank itself. A very narrow annular space is defined between the intermediate cylinder and exterior surface of the tank such that any leaks that may develop in the intermediate cylinder will result in the heated fluid passing down this annular space to the exterior so that the risk of contamination of the heated fluid with water in the tank is minimized.

Abstract: An aluminum sheet having a prescribed thickness is obtained by compacting aluminum powder into a green sheet of packed aluminum powder, sintering the green sheet at temperatures of 300.degree. C to 600.degree. C and subsequently rolling and annealing the sintered sheet of aluminum powder at least once. A high-density sintered aluminum laminate is produced by piling a plurality of green sheets of packed aluminum powder one on top of another, sintering the pile of green sheets and then rolling and heating the sintered pile of sheets at least once.

Abstract: A method for the manufacture of a superconductor with a superconductive intermetallic compound consisting of at least two chemical elements in which a ductile structural part made of at least one element of the compound is brought into contact with a second structural part which contains a ductile carrier metal for the remaining elements of the compound after which the remaining elements of the compound are admitted to the second ductile structural part through a chemical transport reaction at elevated temperature, the compound being formed by a reaction of its remaining elements, diffusing through the second structural part, with the first structural part.

Abstract: An improvement in the method for preparing composite rods of superconducting alloy and normal metal from which multifilament composite superconducting wire is fabricated by bending longitudinally a strip of normal metal around a rod of superconductor alloy and welding the edges to form the composite rod. After the rods have preferably been provided with a hexagonal cross-sectional shape, a plurality of the rods are stacked into a normal metal extrusion can, sealed and worked to reduce the cross-sectional size and form multifilament wire. Diffusion barriers and high-electrical resistance barriers can easily be introduced into the wire by plating or otherwise coating the faces of the normal metal strip with appropriate materials.

Abstract: A method of making stabilized superconductors of a composition such as Nb.sub.3 Sn is disclosed. The method includes forming a stock product comprising a tin base alloy as a core with a copper jacket and having a niobium tube clad thereon. The stock product is then embedded in a good thermally and electrically conducting matrix which is then coreduced until the desired size is obtained. This cold worked product is then submitted to a heat treatment to form superconductors of Nb.sub.3 Sn.

Abstract: Particulate aluminum or aluminum alloy swarf or waste is compressed under heat and pressure to form a billet. After subjecting the billet to a subsequent heat treatment at a higher temperature the billets are capable of being extruded by conventional extrusion apparatus. A conventional preheated billet of cast aluminum or aluminum alloy can be placed in the extrusion apparatus between the die plate and the preheated billet of aluminum or aluminum alloy swarf so that upon extrusion through the die orifice the compressed swarf billet and the conventional billet will comprise the core and coating portions of the product respectively.

Abstract: A self-aligning bearing assembly comprising an outer member having a concave inner surface and an inner member carried within the outer member and having a convex outer surface generally complementary to the concave inner surface, the inner member being a deformable plastic member, deforming means to vary the tolerance between the inner and outer members.

Abstract: Method and apparatus for the briquetting of metal swarf, pellets and powders on roller presses having briquetting rollers which are provided with moulding depressions on their cylindrical surfaces by which a briquette extrusion is formed having alternating briquette mouldings extending from one or other side of the extrusion and arranged in a chequerred pattern, each briquette moulding having a plane face on the opposite side of the extrusion. The extrusion is separated into individual briquettes by a surface pressure applied to the extrusion substantially at right angles to the plane of the extrusion.

Abstract: A method for producing louver fins for use in a heat exchanger, comprising the steps of forming in a sheet of thin fin blank a plurality of cylindrical collars in each of which a heat conductive tube is inserted, forming a plurality of bridge-shaped protruded louvers in parallel with the rows of cylindrical collars, inserting pilot pin in one of the cylindrical collars for predetermining a transverse width of the louver fin by measuring from the cylindrical collar, and cutting the blank sheet into the predetermined transverse width for obtaining a multiplicity of fin louvers with the predetermined width from the blank sheet.

Abstract: This invention relates to an improvement in the method for repairing a damaged iron mold and similar casting devices by bridging the damaged area with a metal plate and securing the plate by means of fastening elements inserted into apertures in the plate and prepared recesses in the iron mold, the improvement comprising inserting expansible straddling dowels in said apertures and recesses, and expanding said dowels with a powder-force-actuated setting device.

Abstract: A method of making aluminum castings having a self-fused high silicon content in the interior matrix near and at the surface. A sand core is coated with a tacky, low-ash, low-volatile adhesive along a predetermined zone. Silicon dust particles are deposited on said adhesive in bonded relation. Molten aluminum is cast into a mold cavity containing the coated core. After mold stripping, the silicon particles are exposed as metallurgically bonded to the aluminum but along an ultra-thin depth. At least some of the exposed silicon particles are machined to expose a planar facet and thereby increase the projected exposure of the silicon particles along the machined plane. The resulting product has a reduced shrinkage characteristic (typical of aluminum alloys having a high proportional precipitated silicon).

Abstract: Improved heat transfer tube has radial longitudinal fins on a central core and radial transverse fins on its exterior surface. The composite tube is made by the steps of inserting a longitudinally finned core member inside a smooth surfaced outer tube and then subjecting the outer tube to an external finning operation which produces external fins on the tube while reducing the internal tube diameter of the tube sufficiently that the tube will be firmly mechanically bonded to the finned core member.

Abstract: A bimetallic tube comprising a copper-base alloy and a reactive metal such as titanium, is produced by assembling concentrically a tubular member of each of such materials and interposing a layer of copper, nickel or silver between them, forming a bond between the reactive metal and the copper, nickel or silver and extruding the assembly. The bimetallic tube is useful for heat exchange purposes when corrosive fluids are involved and has better heat transfer properties than an all-reactive metal tube.

Abstract: Disclosed herein is an improved process for finishing a die roll which is used to prepare interlayers for laminated safety glass. The improvement comprises the blasting of the roll with glass beads after the conventional grit blasting steps and before chrome plating. Interlayers prepared using rolls made by this process are characterized by having surfaces which are more printable without sacrificing the surface roughness required to prevent blocking of the sheet and to facilitate de-airing of laminates prepared from the interlayer.