Abstract: A self supporting shrinking mandrel including an actuator with a plurality of legs, each terminated by a cross member. The legs and cross members are inserted into grooves of a plurality of support members. The grooves and cross members cooperate to hold the support members in place making the entire mandrel self supporting. The actuator is tapered in cross section along the longitudinal axis which causes a positive shrinking action as the support members are drawn toward the longitudinal axis when the actuator is withdrawn from the combination.

Abstract: A bowling ball having a thin viscous film deposited upon its surface from within the ball for increasing the coefficient of friction between the ball and the bowling lane. The film comprises a saturated plasticizer incorporated into the ball at the time of manufacture that slowly exudes from the outer shell over an extended period. The method comprises preparing a resin blend capable of being cured into a tough, durable material and mixing the resin blend with a plasticizer which is miscible with the liquid phase resin blend, but incompatible with the solid phase. Catalysts are admixed and heat is applied to the mixture to cure the resin blend into a tough and durable outer shell.

Abstract: Plastic molding apparatus is disclosed for forming a series of molded connector bodies along a molded strip segment. By repeating the molding cycle, an additional strip segment is simultaneously molded and joined to a previously made strip segment, so that repeated cycling of the molding machine provides a molded continuous strip interconnecting a series of molded bodies.

Abstract: The instant invention is directed to a process for filling a cavity with a flowable reaction mixture through an inlet opening located at the bottom of the cavity. The process broadly comprises injecting a relatively small amount of reaction mixture into the cavity to cover the inlet opening with reaction mixture. The injection process is then briefly interrupted. Thereafter, the remaining amount of reaction mixture is injected into the cavity. The invention also relates to apparatus useful in performing the above-described process.

Abstract: Plastic pipe is continually produced from a curable resin on a plurality of horizontal mandrels which are repeatedly simultaneously moved between plastic pipe production stations. There is at least one station for applying resin to a mandrel, at least one station for curing resin on the surface of a mandrel, and at least one pipe removal station for removing pipe from a mandrel. The pipe stations are substantially radially equidistant from a central horizontal axis and are circumferentially spaced apart by substantially equal increments around the horizontal axis. Each mandrel is progressively rotated between the stations.The temperature of each mandrel is controlled by passing a fluid through the mandrel. Heating fluid passes through mandrels in resin cure stations and cooling fluid passes through mandrels in resin application and pipe removal stations. A control system minimizes mixing of the cooling and heating temperature control fluids when the mandrel is rotated between stations.

Abstract: A rounder bar with a biased flexible foot portion responsive to surface irregularities of a conveyor for maintaining a continuous contact with the conveyor along the full length of the rounder bar.

Abstract: Disclosed is a carbon extrusion oil for preparing carbon and graphite electrodes. The composition comprises a mixture of straight-chain paraffin hydrocarbons and cylinder stock derived from a naphthenic type of crude oil. This invention relates to a method for producing extruded carbon or graphite bodies and to a composition for use therein.

Abstract: Apparatus for making extruded bricks having a textured handmade appearing face designed to form the outer building wall surface, comprising a brick extruding die including a progressively narrowing inlet funnel portion having a downstream end and a constricted neck portion forming a material shaping die throat to receive a column of brick forming clay mix and shape the clay mix column to a rectangular cross-section whose width dimension perpendicular to said face slightly exceeds the desired brick width. A subsurface disrupting elongated thin bridge member transversely spans the die throat and is supplied with liquid under pressure to produce downstream directed liquid jets internally disrupting the clay mix column in the die throat immediately below the upper boundry surface thereof along a substantially horizontal disruption plane.

Abstract: A method is disclosed whereby a pair of stringers for slide fasteners are subjected to heat treatment to permit the fibers of stringer tapes to be contracted particularly in the region of longitudinal edge portions of the tapes where rows of fastener elements are secured. The thus contracted tape edges are further shaped by compression molding so as to present a transverse cross section complimentary with that of a guide channel in a slider.

Abstract: A high rate carbon cathode is made by mixing a carbon powder having a sure area of about 1000 square meters/gram with polytetrafluoroethylene and a sufficient amount of water to form a coherent mixture. The mixture is applied to an electrically conductive screen; the cathode formed while wet to an intermediate thickness, the cathode vacuum dried at about 100 degrees C., and the cathode cold compressed to obtain a final electrode porosity of greater than 80 percent. The cathode can be used in a lithium primary cell using a solution of an inorganic lithium salt in sulfuryl chloride as the electrolyte.

Abstract: A machine for moulding mouldable products, preferably foodstuff masses. A piston is slidable in a piston passage of a housing and a moulding tool defining a moulding cavity is slidable in a moulding tool passage of the housing. The piston and moulding tool are coupled to a common rotary drive disc for reciprocation such that when the moulding tool is in a first position, the piston pumps the mouldable product into the moulding cavity, compacting the product to a desired consistency, and when the moulding tool is in a second position, the mouldable product compacted in the moulding cavity is discharged from the machine.

Abstract: A toy casting machine including a base which has mounted thereon a crucible into which plastic materials may be placed for melting. The crucible is rotatably mounted to a sidewall and may be duped by an actuating mechanism which also moves a predesigned mold into position below the crucible. The crucible and machinery are entirely covered by transparent material to allow viewing the operation and to protect a child operating the machine. An isolating loading apparatus is provided to allow the machine to be loaded with raw material and molds without endangering the operator.

Abstract: Improvements in molding apparatus and method for forming a plurality of patties from a mass of agglomerable edible material such as, chopped meat, fish, poultry, vegetables, or the like. The molding apparatus includes a rotatable turret having a plurality of mold cavities positioned therein with a piston reciprocably mounted in each cavity. Upward piston reciprocation forms a mold in the lower portion of the cavity. An improved food-feeding mechanism having an enlarged end opening in communication with the cavity pushes the edible material into the mold over a wide portion of the turret rotation. The piston reciprocates upwardly while in communication with said food-feeding mechanism to draw food material into the mold and avoid air pockets in same. As the turret rotates and the piston reciprocates downwardly to expell the patty, an improved continuous wire band patty cut-off mechanism cleanly separates the patty from the piston to which it typically sticks, without deforming the patty.

Abstract: A frame comprising crossplates 8 and 13 coupled and spaced apart by coupling rods 10 (FIG. 2) faces, by the crossplates 8 and 13, opposite ends of aligned plunger pairs 7 and 16, there being a plurality of said pairs associated with respective openings, in which they are a close sliding fit, in a housing in which is a supply chamber 2 surmounted by a supply hopper 6. Reciprocation of the frame 8, 10, 13 causes movement of the plungers 7, 16 with there being a movement time lag between the plungers of the pair to provide, when within the supply chamber 2, a space between the confronting ends of said plungers 7, 16, for receiving material from the chamber 2 as an object 18 which can be ejected (e.g. by wire 21) when the said ends are outside the housing 1. This arrangement ensures consistency of shape of the product and of the location at which it engages from the device, facilitating subsequent treatment and/or handling thereof.

Abstract: An especially high strength, high temperature, economical material useful for insulation is preferably made by making up a mix having the following proportions in parts by weight: 20-50 parts expanded perlite; 0.5-4 parts sodium fluosilicate; 0.2-5 parts fiber material; a water solution having 9.5-19 parts total of solids content of sodium or potassium silicate; 2-9 parts zinc oxide; and water which, along with the water in the sodium silicate solution totals 21.5-67 parts; thereafter storing the mix under cover for less than 21/2 hours, compressing or blowing the mix to a desired form, and curing and drying it by heating.

Abstract: A curved mandrel, method of making same, and method of curing an uncured polymeric hose employing such curved mandrel are provided and the curved mandrel comprises a plurality of members disposed in end-to-end relation to define the configuration of the mandrel including a predetermined curvature therein, interlocking portions for interlocking the members in only one position to define the configuration and curvature, and a readily attachable and detachable device for holding the members axially against each other after interlocking wherein the members with the interlocking portions and holding device are adapted to provide a substantially straight mandrel for installation of an uncured straight hose therearound, define the configuration and curvature in the mandrel and uncured hose, and provide looseness and axial spacing between members to enable easy withdrawal of the cured curved hose from around the members.

Abstract: Alfalfa pelletizing apparatus and method wherein pellets are formed in an open ended molding passage or aperture by compressing members entering both ends of the aperture to compress the alfalfa and to extract liquid content for discharge at a passage communicating with the mid portion of the primary mold aperture. The mold apertures are formed in a moving belt upon which the alfalfa is discharged. The pellets are expelled from the apertures after formation thereof and the forming apertures are then cleaned after release of the pellets.

Abstract: A method for recycling soap chips in a particular structure including a container having a removable rack having four compartments and a heating element, the method comprising, placing the soap chips in the compartment, heating the soap chips, cooling the soap chips, removing the rack from the container and emptying out formed soap bars.

Abstract: Disclosed are molded plastic parts particularly eyeglass frame components, the centrifugal spin-casting of such parts and mold apparatus for producing such parts. Also disclosed are flexible molds for spin-casting eyeglass fronts and temples. In accordance with one aspect of the invention, the plastic parts are made from a resin system or mixture in liquid form comprising an epoxy resin, a curing agent therefore and an ultra-violet absorber and/or an antioxidant. DGEBA-type epoxy resins and polyoxypropylenediamine curing agents are the disclosed preferred epoxy resin and curing agent.

Abstract: A method for producing coated, molded, fiber-reinforced thermoset plastic articles having an adherent coating in heated matched metal molds.The coating composition includes(A) a blocked polyisocyanate which is the reaction product, essentially free of unreacted --NCO radicals, of e-caprolactam and organic polyisocyanate;(B) a polyepoxide-polyacrylate which is the reaction product, essentially free of unreacted epoxy radicals of a polyepoxide and acrylic or methacrylic acid;(C) ethylenically unsaturated polyester resin;(D) copolymerizable alpha-beta ethylenically unsaturated monomer;(E) an initiator for addition polymerization;(F) a catalyst for the reaction of --NCO radicals and --OH radicals;(G) filters, such as inert particulate filled, pigments, mold release agents.The coating composition is applied in the matched metal mold after a fiber-reinforced thermoset plastic article has been shaped within the mold.