Abstract: A method of manufacturing herringbone gears starting with non-hardened cylindrical stock material, establishing a relief notch for each tooth in the cylindrical stock where the two helices meet, roughing the double helical teeth, and case-hardening the gear teeth. The teeth are then finished using high accuracy Cubic Borzon Nitride (CBN)-faced cutters with the relief notch allowing run-out of the cutters.

Abstract: A method and apparatus for forming cured polyethylene insulation about high voltage cables by applying uncured polyethylene around a core of the cable. The polyethylene is heated, cured and then cooled to room temperature in a pressurized nitrogen gas atmosphere. In one form the molding apparatus comprises first and second mold forms which define a cavity and which include means for heating the mold halves to the polyethylene curing temperature. Means is also provided to introduce the pressurized nitrogen into the cavity and for subjecting cable portions that extend beyond the mold to pressurized nitrogen until such cable portions are sufficiently cooled to prevent their deformation under pressure, to prevent the oxidation of polyethylene and/or to prevent the formation of voids or enclosures.

Abstract: A method and apparatus for forming cured polyethylene insulation about high voltage cables by applying uncured polyethylene around a core of the cable. The polyethylene is heated, cured and then cooled to room temperature in a pressurized nitrogen gas atmosphere. In one form the molding apparatus comprises first and second mold forms which define a cavity and which include means for heating the mold halves to the polyethylene curing temperature. Means is also provided to introduce the pressurized nitrogen into the cavity and for subjecting cable portions that extend beyond the mold to pressurized nitrogen until such cable portions are sufficiently cooled to prevent their deformation under pressure, to prevent the oxidation of polyethylene and/or to prevent the formation of voids or enclosures.

Abstract: Tabletting compositions are formed by adding to a crystalline sugar such as dextrose, sucrose, and blends of dextrose and sucrose, a low D.E. starch hydrolysate having a descriptive ratio of less than about 2 and subsequently agglomerating the mixture. When this starch hydrolysate is added in amounts of about 1 to about 10% by weight of the sugar, the resulting agglomerated crystals exhibit reduced dusting and breakage characteristics, as well as the ability to be easily compressed into strong tablets using relatively low pressures.

Abstract: Apparatus for molding insulation about a relatively short section of an uninsulated conductor of a high voltage cable. The apparatus has a pair of mold forms that define a cavity in which the new insulation is molded. Heat and pressure applying platens on each side of the mold forms are fitted with perpendicularly extending stress bars and removable means mounted to the platen for biasing the latter and, therewith, the mold forms towards each other. The mold forms and at least one platen include a series of cavity vent holes which are tapered and have a major diameter proximate the cavity. A transfer pot is provided for injecting a softened insulating material into the cavity via a passage. One or move transverse bars extend across the center of the passage and prevent entrapped gas or air disposed in the center of the transfer pot from being transferred into cavity.

Abstract: A method for making splices in high voltage electrical cable and particularly for replacing relatively short sections of previously removed, original insulation. Ends of the original insulation adjoining the section are tapered and fresh insulating material is placed over the section and heated to fluidize it. Pressure is applied to intimately combine the original cable insulation and the newly added splice insulation to thereby effect an interfacing of the original and newly added insulating material. The new insulating material is placed inside the cavity of a mold which includes small apertures communicating the cavity with the exterior and being spaced over the length of the cavity. The fresh insulating material is pressurized by forcing additional material into the cavity to thereby vent entrapped air through the apertures to the exterior. Some of the apertures are selectively opened and closed to effect the venting while propagating the insulating material and the applied pressure throughout the cavity.

Abstract: A molded cable splice is formed by wrapping strip-formed semiconducting and insulative thermosetting molding compounds about a layer of semiconducting tape covering a connector and exposed central conductors of a pair of cable ends joined by the connector, and bonding the insulative molding compound to the cable insulation layer in a heated mold having opposing end clamp portions each with an inner surface of a predetermined radius and length. The radius is selected in accordance with the formula ##EQU1## , WHERE R IS THE RADIUS OF THE CABLES TO BE JOINED AND X is a numerical quantity called the cable clamp factor. For cables having an ethylene propylene rubber insulation layer, X lies in the range from about 0.20 to about 0.50; for cables with a cross-linked polyethylene insulation layer, X is partially dependent on insulation thickness W and lies between a lower range of from about 0.50 to about 0.76 for W = 0.175 inch and an upper range of from about 0.87 to about 1.00 for W = 0.900 inch.