Abstract: An elastomeric spring is formed by extruding a rubbery material into a reinforcing sleeve in a mold during relative motion between the mold and nozzle, and thereafter vulcanizing.

Abstract: A V-shaped shell comprising a replaceable tip for a mold apparatus utilizable for squeezing a shoe upper against a female mold. The V-shaped shell comprises generally planar members meeting at a curvilinear apex, each planar member having a raised periphery which tapers inwardly towards the surface of the planar member, to define a pre-arranged volume for the tapered distribution of stiffening resin applied between the inner liner and outer layer of a shoe upper.

Abstract: A process and a device for forming a tennis ball by the formation of two semispherical bowls in crude elastomeric material each having on its border a structural shape that is deformed by compression when the two semispherical bowls are pressed one against the other while a depressurization is effected in the joining zone of the two semispherical bowls on the outside of them.

Abstract: An improved heat-forming deep-drawing molding machine for producing receptacles with thermoplastic banderoles, which machine includes a mandrel which coacts with a mold or a forming chamber for forming a closed banderole coil or loop. The mandrel has substantially the shape of the mold cavity. The mandrel slidably reciprocates in the mold cavity relative to the mold or the forming chamber and has a fixed transverse section relative thereto. The mandrel is composed of stationary and rotatable parts relative to the forming chamber. The rotating parts coact with the curved or round parts of the forming chamber or mold cavity. The rotating parts include suction channels which bias the banderole thereagainst so as to effect an advancing movement of the banderole in the forming chamber. The suction channels are operatively connected to a vacuum source.

Abstract: A device for mounting and securing a membrane made of a substantially flat piece of flexible polymer film on an amperometric cell that has a substantially cylindrical cell end frontally provided with an electrolyte-bearing sensor face by means of a removable annular holding member; according to the invention the holding member is a substantially non-resilient and creep-resistant die ring, preferably made of stainless steel, having a cylindrical inner surface that fits slidingly onto the cylindrical cell end and at least one tapered inner surface portion that extends outwardly from the cylindrical inner surface toward a leading end of the die ring; the leading end of the die ring is moved over the cylindrical cell end whereby the polymer film is deep-drawn between the die ring and the cylindrical cell end and is permanently shaped to form a cup-shaped membrane portion extending over the electrolyte-bearing sensor face and the adjacent portion of the cylindrical cell end; the resulting cup-shaped membrane porti

Abstract: The ends of plastic optical fibers forming a light-transmitting cable are fused in a manner so as to minimize light loss by applying heat to plasticize short end-length portions while containing portions rearwardly thereof within a cavity defined by means having sufficient thermal conductivity and mass that the rearward portions are not heated above the plastic fiber deformation temperature. Both methods and various forms of apparatus for practicing the methods are disclosed.

Abstract: A device for stiffening portions of sheets of flexible material including a reciprocable and rotatable nozzle disposed upon an extruder, the nozzle having a generally V-shaped nose section and a pair of wings disposed therebehind.

Abstract: The procedure is actuated by the apparatus shown in FIG. 3, part B of the mold of which, relatively movably, holds an elastically deformable chamber C which is caused to expand by a fluid under pressure. Into cavity A1 of relatively fixed mold A textile reinforcement D and some liquid resin is placed. If the product to be molded has projecting parts A1, part B is provided with pushers 12 having shaped ends 14, actuated by a pressurized fluid to push forward a part of woven armor D into cavity A4 before causing chamber C to expand. When this condition occurs, the liquid resin is pressed into the structure of reinforcement D and, in solidifying, takes on the shape of cavity A1 of the mold.

Abstract: A food product, such as fruit or vegetables either whole or in pieces, or in the form of a pulp, or meat in pieces, is preserved by feeding hot liquid or steam into a contained body of the product to sterilize the product. Some liquid is retained in the product which is sealed in a container under aseptic conditions. The sterilization preferably takes place in the container in which the sterile product is ultimately sealed.

Abstract: A device to weld or splice two ends of a thermoplastic yarn. The device includes means for holding the yarn adjacent a heating element. The heating element is energized and the two ends of the yarn are fused together to form a globule of molten plastic. Thereafter, the heat is terminated and the device automatically pulls the two lengths of yarn apart and holds them under tension, and at the same time, the device molds the globule into a relatively smooth mass that has a width substantially equal to the width or diameter of the yarn.

Abstract: A light weight portable device that may be utilized to save soap by subjecting the remnants of bars of soap to compression to reform the remnants into a solid bar of desired configuration, and surplus water associated with the remnants being discharged from the device during the reforming operation. After the remnants have been reformed into a solid bar, the bar may be ejected from the device by a simple manual operation. The device is particularly adapted to being formed in its entirety from a polymerized resin such as polyethylene, polypropyline or the like by conventional molding techniques.

Abstract: A pair of matched metal dies one of which moves against the other to form a mold to contain, and to apply pressure to a part and to pinch off excess material on the part. The lower die has a recess with all the sides of the recess canted outward in two steps. The upper die when inserted contacts the lower canted sides of the lower die.

Abstract: A structure is described which consists of a corrugated and a flat sheet or film of thermoplastic material, which sheets are positively connected by matching depressions with undercuts arranged along the grooves of the corrugated sheet and at corresponding points of the flat sheets. The structure is especially suited to make inserts for trickling-filter towers.

Abstract: Manufacturing a curved fiber reinforced body of plastic material by cutting plastic impregnated fibers with a cutter, directing the cut fibers onto a rotating form and applying a plastic material to the fibers. The fibers are deposited in predetermined radial and circumferential directions to build up a preform of overlapping layers of oriented fibers as the form is rotated. The preform is shaped by compression between mating shaping forms to substantially the final molded shape. The plastic material contains a curative and is partially cured under controlled conditions after the preform is built. The preform is then preheated in an oven and molded under predetermined pressures and temperatures.

Abstract: This invention includes apparatus for manufacturing a plastic name tag holder. The preferred name tag holder is rectangular and has a central cavity open at one end for insertion of the name tag. The holder has a rigid plastic bottom sheet and a rigid plastic parallel top sheet which is turned down around three sides of its periphery and is sealed to the bottom sheet on three sides to provide the central name tag slot. The slot is substantially rectangular in vertical cross-section.The apparatus for manufacturing a plurality of name tag holders includes hinged horizontal insert fingers mounted on the lower platen to separate the top and bottom vinyl sheets and to provide a plurality of male molds corresponding to the central cavities. A plurality of U-shaped electrode dies draws the top sheet down and around the U-shaped insert fingers and seals the top sheet to the bottom sheet beyond the perimeter of the insert fingers.

Abstract: Apparatus and method for thermoforming two or more plastics sheets simultaneously, to form in one operation a double-walled cup, or a composite walled cup, or a plurality of single-walled cups. The sheets are moved and heated simultaneously, the portion not being thermoformed being kept apart, permitting economy of scrap remelting. The thermoformed portions can be kept apart by pressure between the sheets, which can serve to hotform the sheets against respective mould surfaces, or air pressure can bond the sheets together. Existing machines need substantially only an additional clamping plate, heater, and compressed air passing through a radial port in a clamping plate, to incorporate the invention.