Abstract: A mutli-stage blowmolding apparatus wherein a carriage is reciprocable between first and second positions and supports two open-and-shut molds which are operable independently of each other. In the first position of the carriage, one of the molds receives a parison which is being extruded from the nozzle of an extruder while the other of the molds receives a preform which is suspended on the blowing mandrel of a first blowing unit. The mandrel is withdrawn before the one mold closes around a freshly extruded parison and the carriage is immediately moved to the second position in which the parison in the cavity of the one mold is in register with the first blowing unit and can be expanded by the blowing mandrel to be thereby converted into a preform. At the same time, the preform in the other mold registers with the blowing mandrel of a second blowing unit which converts the preform into a bottle or another hollow shaped article.

Abstract: Method and apparatus for injection molding an elstomeric fishing lure body for a weedless lure between cooperating dies which together define a mold cavity. One of the dies has a long, deep, narrow rib projecting into the mold cavity to form a complementary recess in the fishing lure body for concealing the hook end of a fishhook. A reciprocable plunger extends into the mold cavity at one end to form an anchoring recess for a metal or plastic head that is to be attached to this end of the elastomeric lure body and also to form a passageway leading to the bottom of the recess formed by the rib for receiving the shank of the fishhook.

Abstract: A system and method for controlling the injection of material through two or more gates into the cavity of injection-molding apparatus. In this system, a sensor develops an indication of unbalanced flow conditions produced by the injection of the material into the cavity of the mold. A regulator also forms part of the system and serves to adjust the relative amounts of material passing through the gates. The method includes sensing unbalanced flow conditions produced by the material injected into the cavity and adjusting the relative amounts of materials injected into the cavity through the various gates.

Abstract: A hydraulic operated machine for expanding lengths of rigid thermo-plastic tubing providing a shiftable table on a base retaining liquid cooling and heating containers movable from a heating to a cooling and a discharge position including means for holding a length of rigid tubing vertically in the heating container. An expansion assembly positioned above the containers adapted to descend into the softened tube in the heating container and forming same by enlargement of the expansion assembly and raising the expanded tube for descent into the cooling container and rigidizing and discharging same following contraction of the expansion assembly.

Abstract: Apparatus for repairing insulation of an insulated conductor comprising a split yoke; an elongate, substantially cylindrical cavity formed in the mating surfaces of the yoke; an elongate, split, substantially cylindrical conductor mold or insert removably positioned in the cavity; an injection molding unit communicating with an opening in the conductor insert through an injection bore in the yoke to inject insulator into the conductor mold through such bore; a heating element within the yoke to melt the injected insulator over an area comprising the central area of the conductor mold; and a cooling element within the yoke to cool the ends of the conductor mold while the central area is heated, whereby the heat applied to the insulated conductor within the conductor mold does not extend to insulated conductor outside the yoke. In an optional embodiment, a tensioning device can be used to maintain the insulated conductor under tension during the repair.

Abstract: Disclosed is a method and apparatus for continuously molding plastic parts. Basically, the apparatus comprises a pair of spaced, rotatable, indexable trunnion transfer units or wheels having a plurality of radles thereon for receiving and transporting carrier bars. The wheels are indexable to a number of stations at which various activities take place and are positioned on either side of the mold area of a conventional molding machine. A carrier bar having affixed thereto a plurality of cores for the part to be molded, for example, is transported by the rotating wheel from the bottom of the first wheel to a first station where an insert may be added to the core and thence to the top position of the wheel where the carrier bar is transferred to a conveyor which in turn transports the carrier bar to the mold. After completion of the molding cycle, the carrier bar with the molded parts thereon, is transported by the conveyor to the top of the second wheel where it is inserted thereon.

Abstract: A font used during the plugging of bowling ball finger holes consisting of an annular member defining a chamber placed upon the bowling ball surface about the finger hole to be plugged. The font body includes a base having a concave supporting surface corresponding to the configuration of the bowling ball, and attachment means attach the font to the ball during use. The font is formed of an easily machinable material, such as synthetic plastic, and may be simultaneously machined from the ball during machining of the plugging compound and resurfacing of the ball.

Abstract: Cup-shaped shells suitable for use as hors d'oeuvres, snacks, and the like are made from leavened dough. The shells are cut from a crust of leavened dough and then shaped by dies and heated to form a concave configuration.

Abstract: A foundry equipment comprises at least one guiding track element on which a number of identical mould parts are successively piled together in a position in which their greatest dimension is horizontal. After the formation of the mould, the guiding track element with the mould thereon is tilted about 90.degree. around a horizontal axis that is parallel to the longitudinal direction of the mould, thus bringing the mould into a position in which it is ready for the pouring operation.

Abstract: A cylindrical, synthetic plastic container having reinforcing hoops permanently bonded around the ends of the container is manufactured in a single blow molding process. Half of the outer peripheral edge portion of each of two reinforcing hoops is positioned in a semi-cylindrical mold half to place the hoops in spaced, parallel, co-axial alignment. Thereafter, a tube of soft thermoplastic is extruded through the open central portions of the hoops until the end of the tube overlies a co-axially positioned pneumatic nozzle. The semi-cylindrical mold half with the hoops retained therein is moved into engagement with a mating, semi-cylindrical mold half to form a cylindrical mold.

Abstract: Apparatus for and method of making products, such as pastry cups, ice cream cones and the like, by baking batter in split molds carried by mold bars, the molds cooperating with removable cores carried by core bars selectively latched to the mold bars. The mold bars are mounted on a continuously operating conveyor by which they are progressively carried through an oven, a core bar removing station, a mold opening and product removing station, mold closing and mold charging stations, a core bar replacement station, a core bar jogging station, and a core bar latching station. When the core bars with their cores are removed from the mold bars, they are temporarily stored on and carried by the conveyor.

Abstract: A two-section die is provided, one section with a cavity having an open side, a surface opposite the open side, and an exposed face connecting the open side and the surface and including with the latter a steep angle. The exposed face is provided with steps which extend transversely of the direction of movement of the second or male section of the die, which is movable into the cavity for compressing a mixture of ligno-cellulose particles and binder material therein, and which has face and surface juxtaposable with the respective face and surface of the cavity so as to permit compression of the mixture.

Abstract: Internal mandrel process and apparatus for the production of oriented tubular film in which rupture of the extruded tube by the pressure of inflating gas is prevented by means of a cup seal located between the mandrel and inflating zone, the cup seal being in peripheral engagement with the internal surface of the tube and presenting a substantially concave surface of the mandrel.

Abstract: Apparatus and method for forming a specialty food product, such as a fortune cookie wherein a flat, flexible cake, after being cooked, is placed on a first, flat, fixed surface and is shifted by continuously moving pins over the first surface and onto a second, flat fixed surface having a slot therethough. A continuously moving suction device removes a strip of paper from a stack and places the strip on the cake on the second surface and forces the cake into the slot to fold the same about a first axis until the cake halves formed by the fold are generally parallel with each other. As the folded cake moves downwardly in the slot, a pair of continuously rotating arms engage respective ends of the cake and fold it about a second axis which is substantially perpendicular to and slightly below the first axis.

Abstract: Apparatus for blow molding consisting of a preform station where a blank is shaped around a mandrel and a blow station where the blank is formed in a mold, the mandrel being removed from the blank and a compressed air member being applied to the orifice of the blank.

Abstract: A novel printing plate is produced by placing an electrotype shell and a partial base in a mold cavity, holding them in place in properly spaced relation to each other as by means of vacuum and hydraulically or pneumatically operated holddown mechanisms, and filling the mold cavity with molten plastic or similar synthetic material from a plastic injection machine. The partial base skeleton includes scarf cavities, and portions of this skeleton may be embedded in the plastic when it hardens into the final shape.

Abstract: A method and apparatus for making filled products of various shapes and sizes and the products. The products can be toroidal, rings of interconnected knobs, crescent-shaped, spherical or other shapes, each having one or more discrete spots or globs of filling material within. The filling material can be injected in any direction without the product, for example, sidewise along the midline of a toroidal product, or radial in the toroidal product. The amount of filling material and its location within the product can be varied. The filling material flow is controlled by positive and negative pressure.

Abstract: A rubber material is sequentially injected into a plurality of elongated molds positioned within a corresponding plurality of vertical hydraulic presses arranged in a row. The material is injected into each mold by a pair of injection molding machines which are arranged in side-by-side relation and are supported by a carriage for both axial and lateral movement as a unit. Each of the molds has a set of mold sections which are supported by upper and lower platens of the corresponding press, and each press includes a set of vertical tie rods which are spaced longitudinally along the mold and are actuated by hydraulic cylinders for rigidly clamping the platens and mold sections together. The tie rods have upper end portions which are releasably locked to the upper mold platen by a laterally movable latch mechanism. After a molding cycle, the latch mechanism is released, and the tie rods are retracted downwardly.

Abstract: A process for effectively and rapidly desalting gelatino silver halide emulsions for photographic light sensitive elements wherein a thin film of the emulsion is formed and gelled by cooling and thereafter washed with cold water.

Abstract: The disclosure relates to a dough processing machine that is capable of continuously feeding pieces of dough on a traveling surface first to a roll for the flattening operation where the pieces of dough are caused to assume the proper length and width for the desired product to be created therefrom. As the flattened dough is emitted from the rolling operation, the leading edge thereof is caused to be raised from the traveling surface and directed rearwardly while the remainder of the dough progresses through the rolling operation and is advanced to another member which rolls the length of dough upon itself to complete the formation of the finished product.