Abstract: A copper catalyzed silicon reaction mass for the production of methylchlorosilane which comprises free-flowing powders or particles of silicon metal having spots of a copper-silicon alloy substantially uniformly distributed on the surface of the silicon particles, the copper constituting less than about 2% and preferably about 1.75% by weight of the catalytic mass.

Abstract: Method of incorporating multifilament strands of carbon fibers into an aqueous hardenable hydraulic cementitious matrix which can be set to produce a reinforced structure having improved flexural strength which comprises treating the fiber strands with a hydrophobic resin system prior to adding them to the cementitious matrix.

Abstract: Finely sized unalloyed magnesium metal is blended with finely sized ferrosilicon alloy. The blended mixture is placed in metal containers and plunged into molten cast iron.

Abstract: Method for hard-facing substrates is disclosed using a hard facing material consisting essentially of at least one vanadium carbide. In a particular embodiment of the invention tungsten is present in the hard facing material in solid solution with vanadium carbide.

Abstract: A low density, porous compact of prepared mix containing silica fume, finely-divided carbonaceous reducing agent such as petroleum coke or coal, optionally iron and a binder.

Abstract: Method of incorporating multifilament strands of carbon fibers into an aqueous hardenable hydraulic cementitious matrix which can be set to produce a reinforced structure having improved flexural strength which comprises treating the fiber strands with a hydrophobic resin system prior to adding them to the cementitious matrix.

Abstract: Carbon-carbon fiber composites suitable for use in aircraft brake discs are made by extruding an aqueous gelled mixture containing chopped carbon fibers and a binder-thickening agent into the form of an elongated ribbon wherein the fibers are aligned in the direction of fluid flow. The ribbon is then arranged into a spiral configuration to form a flat disc shaped article with the fibers oriented in the circumferential direction. The disc shaped article is dried, heated to a sufficiently high temperature to carbonize the binder in the mixture and then impregnated with a liquid carbonaceous binder followed by heating the article to at least a carbonizing temperature in order to densify the product.

Abstract: A method of impregnating a fibrous textile material with a plastic resin so as to produce an impregnated fibrous textile material which can be laminated under heat and pressure to produce a composite article. Such method comprises forming a dispersion of a powdered plastic resin in water which has been thickened by means of a water-soluble thickener; applying the dispersion to a fibrous textile material to distribute the resin over the fibers thereof; drying the fibrous textile material treated in this manner to remove the water present; and heating the dried material at a temperature sufficiently elevated to cause the resin to fuse and form a matrix for the fibers.

Abstract: Device for aligning and attenuating soft or brittle fiber mats employing a rotating vacuum roller for gently grasping the fiber mats under sufficient compressive force to hold the same without breaking or otherwise damaging the fiber mats.

Abstract: A method of treating a multifilament bundle of pitch fibers, such as yarn or tow, to prepare such multifilament bundle for further processing which comprises applying to the fibers thereof an aqueous finishing composition comprising a dispersion of graphite or carbon black in water in which is dissolved a water-soluble surfactant which is also capable of functioning as an oxidizing agent. The finishing composition serves as both a size for the fiber bundle and as a thermosetting aid during infusibilization of the fibers.

Abstract: A method of treating a multifilament bundle of pitch fibers, such as yarn or tow, to prepare such multifilament bundle for further processing which comprises applying to the fibers thereof an aqueous finishing composition comprising a dispersion of graphite or carbon black in water in which is dissolved a water-soluble oxidizing agent and a water-soluble surfactant. The finishing composition serves as both a size for the fiber bundle and as a thermosetting aid during infusibilization of the fibers.

Abstract: A process and apparatus for separating magnetic particles from an ore material whereby an ore material intermixed with a liquid or gaseous carrier is fed through a separating zone acted upon by a magnetic field generated by a superconducting solenoid magnet. During passage through the separating zone, the magnetic particles in the ore material are attracted toward the periphery of the zone while the nonmagnetic particles substantially remain at the center whereupon each is then separately collected by mechanical means.

Abstract: Method for hard-facing metal substrates is disclosed using a hard facing material consisting essentially of combined vanadium, tungsten and carbon and from about 5 to about 40% by weight of chromium carbide with up to 15% by weight in the aggregate of cobalt, iron, molybdenum and nickel.

Abstract: A method for the production of cast nodular or ductile iron wherein molten iron having been first contacted with a graphite-spheroidizing agent is after-treated with an alloy consisting essentially of silicon, calcium, magnesium, aluminum, cerium, barium, and iron so as to reduce the formation of iron carbides or chill in the resulting cast nodular iron.

Abstract: A composite drive shaft having a pair of aligned, diametrically opposed bores in which a cross-shaped coupling forming part of a universal joint is pivotally connected. This construction materially reduces the weight of drive shaft/universal joint combinations by eliminating the steel Hookes joint yokes which heretofore have been bonded into the shaft.

Abstract: The invention relates to a computerized process and apparatus for automatically regulating the power, feed rate and electrode position of hollow or solid electrodes in submerged arc electric furnaces used for the production of quality-controlled metallurgical products such as calcium carbide.

Abstract: A method for bonding a tubular shaft to an end fitting to produce an assembly wherein the shaft and the end fitting are in axial alignment and which is capable of transmitting high torque, said method employing an end fitting provided with a mating section having two concentric cylindrical walls which describe an annular cavity or socket adapted to receive the tubular shaft therein. The high torque carrying capacity of the joint produced in accordance with the invention results from the fact that the shaft is bonded to the mating section of the end fitting on both its interior and exterior surfaces and is in axial alignment with the end fitting. Such axial alignment results from the presence of a resilient sealing ring and an annular shoulder, positioned near the top and base of the inner cylindrical wall of the mating section, which contact the inner surface of the tubular shaft and center the shaft around said wall when the shaft is inserted into the bonding socket of the end fitting.

Abstract: Hard-facing of iron and iron base alloy substrates is disclosed using a hard facing material in the form of granules consisting essentially of grains of chemically combined vanadium, tungsten, molybdenum, and carbon bonded by a binder metal of nickel-molybdenum alloy.

Abstract: A filament winding apparatus having means associated with the winding ring thereof for automatically widening the space between the guide surfaces of the ring at predetermined intervals so as to allow for the removal of any residue or debris which may accumulate therein during operation and cause filament breakage. The apparatus is particularly suitable for winding fibers, such as carbon fibers, which have a susceptibility to shed or fragment during winding, and thereby cause an accumulation of debris in the winding ring.

Abstract: A method for stabilizing acetylene against explosive decomposition comprising mixing together with the acetylene a chemical free radical scavenging agent chosen from the group consisting of nitric oxide, hydrogen chloride, hydrogen bromine, hydrogen iodide and vinyl bromine as well as mixtures thereof.