Abstract: An improved annular cutting die for shaving the surface from metal rods or base, having four facets in the outer annular cutting surface thereof.

Abstract: A cable for the transmission of direct current electricity comprising a multi-layered, resistivity graded polymer insulation, and a method of transmitting direct current electricity therewith.

Abstract: An electrical apparatus enclosed within a housing which contains a replaceable battery, and is provided with means for programming and/or testing by means of connectable electrical contacts with an independent instrument. The electrical apparatus is provided with a composite unit comprising a battery support and an electrical terminal connector which is arranged to cooperate with a single small access port in the apparatus housing whereby routine servicing of battery replacements, programming and/or testing, can be performed through the single port.

Abstract: A crosslink curable ethylene-propylene rubber composition with improved resistance to heat, the cured rubber composition and electrical conductors insulated with said cured rubber composition. The improved rubber composition comprises a combination of ethylene-propylene rubber, chlorosulfonated polyethylene, zinc oxide, talc and carbon black in particular proportions.

Abstract: A method of continuously and rapidly effecting a heat induced cure in curable polymeric compositions, such as by cross-linking or vulcanization, by means of directly contacting a surface of the heat curable polymeric composition with a stream of hot gas traveling at very high velocities, and under elevated pressures.

Abstract: The mending of defective semiconductive components of insulated electrical cable, comprising filling and sealing voids or breaks within a body of semiconductive material with a curable semiconductive patching compound comprising the combination of chlorosulfonated polyethylene, conductive filler and lauroyl peroxide, and heating the patching compound to cure the same.

Abstract: A composite of polymeric materials which are adheringly joined to each other and which can be easily and cleanly separated by stripping apart with a low pulling force whereupon the contacting surfaces of their interface separate cleanly without retention of any residue on one from the other, and which comprises the combination of a previously cured body of a copolymer of ethylene and propylene adjoined to a subsequently cured body of an elastomeric blend of a copolymer of ethylene and propylene admixed with chlorosulfonated polyethylene. The combination of materials is especially advantageous when used in electrically conducting wire and cable constructions as a composite of an electrical insulation and an overlying strippable semiconductive layer.

Abstract: A method of compounding thermoplastic polymeric material and fillers, including additives and agents, and unique compounded products. The compounding method comprises mixing the thermoplastic polymeric material in particulate form with particulate filler, and in progressive sequence melting the surface portion of the thermoplastic particles, blending the filler with said molten surface portion of the thermoplastic particles and removing the resultant blended melt and filler from the surface of the thermoplastic particles. The mixing and melting, and the blending and removing, are continued until the filler is substantially assimilated into the polymeric material and the thermoplastic particles become substantially diminished by melting and blending, or the method can be carried further if desired. The compounded product thus prepared is characterized by a distinctive stratified consistency.

Abstract: A method of compounding thermoplastic polymeric material and fillers, including additives and agents, and unique compounded products. The compounding method comprises mixing the thermoplastic polymeric material in particulate form with particulate filler, and in progressive sequence melting the surface portion of the thermoplastic particles, blending the filler with said molten surface portion of the thermoplastic particles and removing the resultant blended melt and filler from the surface of the thermoplastic particles. The mixing and melting, and the blending and removing, are continued until the filler is substantially assimilated into the polymeric material and the thermoplastic particles become substantially diminished by melting and blending, or the method can be carried further if desired. The compounded product thus prepared is characterized by a distinctive stratified consistency.

Abstract: A new and improved magnetic damping system for induction watthour meters including electromagnetically driven disk armatures. The magnetic damping system comprises cobalt-rare earth permanent magnets of relatively small mass deployed in a counterposed pair of unit assemblages each of which is positioned on an opposite side of the driven disk.

Abstract: An improved and economical fire retarding system for polymeric compositions comprising the combination of a halogen-containing hydrocarbon and an oxide of iron; a method of rendering polymeric compositions resistant to flame; and the flame resistant polymeric compositions and products comprising the same.

Abstract: A method for curing mineral filled, ethylene-containing polymeric compositions with heat and without applying high pressures, which produces relatively dense and substantially non-porous cured polymeric products. The method comprises the addition of an organic titanate to a curable, mineral filled polymeric composition, and heat curing the composition at approximately ambient atmospheric pressures.

Abstract: Method of applying liquid di-tertiary butyl peroxide as a curing agent to a crosslink curable polyolefin material. The method comprises adding the liquid curing agent to the polyolefin material in the form of finely divided discrete particles.

Abstract: A curable composition comprising an ethylene-containing polymer, a curing agent, and a mineral filler treated with tetramethyltetravinylcyclotetrasiloxane, is compounded and fabricated to the desired shape, such as an insulation layer over a conductor. The fabricated product is then passed through a non-aqueous heat transfer medium maintained at about atmospheric pressure and at a temperature sufficient to effect curing in situ of the ethylene-containing polymer. The resulting cured composition is characterized as relatively dense (substantially non-porous) especially suitable for use as insulation for wire and cable.

Abstract: A method of compounding thermoplastic polymeric material and fillers, including additives and agents, and unique compounded products. The compounding method comprises mixing the thermoplastic polymeric material in particulate form with particulate filler, and in progressive sequence melting the surface portion of the thermoplastic particles, blending the filler with said molten surface portion of the thermoplastic particles and removing the resultant blended melt and filler from the surface of the thermoplastic particles. The mixing and melting, and the blending and removing, are continued until the filler is substantially assimilated into the polymeric material and the thermoplastic particles become substantially diminished by melting and blending, or the method can be carried further if desired. The compounded product thus prepared is characterized by a distinctive stratified consistency.

Abstract: Apparatus for and method of continuously casting metals by passing a metal core member through a container of molten metal, and thereby accreting and solidifying molten metal on the core member. The invention comprises providing venting means in the apparatus, and method steps for venting gas from portions of the container of molten metal.

Abstract: Apparatus for a process of continuously casting metals by passing a metal core member upwardly through a container of molten metal, and thereby accreting and solidifying molten metal on the core member; and, a method of continuously casting metals. The apparatus comprises a molten metal container or crucible with an entry port in its bottom wall for the passage of the core member. Positioned within the entry port is a bushing member of molybdenum alloyed with titanium and zirconium, and in the method the core member is passed through the molybdenum alloy bushing.

Abstract: Method of regulating and reducing the oxygen content of a molten copper-containing metal supply for a continuous metal casting process which comprises passing a metal core member through a body of molten metal and thereby accreting and solidifying molten metal on the core member. The method comprises the application of a mixture of gases comprising hydrogen and nitrogen to the molten metal supply to reduce the oxygen contents thereof.

Abstract: An apparatus for the continuous extrusion molding of a curable polymeric material about an elongated conductor. The apparatus includes electrical induction heating means for the precise and isolated application of heat to a limited portion of a progressively advancing mass of curable polymeric material immediately prior to its continuous entry into and passage through a forming die and its molding therein to shape.

Abstract: Cured polymeric compositions having increased resistance to flow and dripping at flame temperatures, comprising copolymers of ethylene-vinyl acetate, hydrated alumina, and silicone elastomer; and electrical conductors insulated therewith.