Abstract: An injection mold assembly for formation of thin walled multi-partitioned plastic containers. An Array of cantileveredly mounted and spaced apart cores are extendable into a female mold assembly which includes a pair of side cavity cams and end cavity cams closeable upon the array, but spaced therefrom to form the plastic container therebetween. A plurality of side locking wedge shaped fingers are extendable into the slots spacing the cores apart. The fingers are arranged to extend into the opposite sides of the array of cores in a direction perpendicular to the longitudinal axis of the array spacing the cores apart while plastic is injected into the assembly by injectors mounted to the female mold. A pair of end pushers contact the two outermost cores in the array limiting outward movement of the cores during the injection step. The end pushers likewise extend in a direction perpendicular to the longitudinal axis of the array.

Abstract: An apparatus and method for molding plastic pipettes are disclosed, using an upper and lower mold plate that define a cavity which forms the outer surface of the pipette. The mold parting line of the upper and lower mold plates is located at a position between the ends of the cavity to prevent "radial" flash at the aperture of the pipette. "Axial" flash at the aperture of the pipette is prevented by a lower core pin in the lower mold plate. The lower core pin extends into the cavity and defines the dimensions of the aperture of the pipette. The extension of the lower core pin from the lower mold plate minimizes tool wear at the aperture and makes the alignment of the upper and lower mold plates at the orifice less critical.

Abstract: A mold for making a bucket having a pivoted handle. The mold has cooperating mold parts defining cavities for molding a bucket and slotted bail retention means. The mold parts are movable only linearly to release the molded product.

Abstract: A single-piece, injection molded rack for holding test tubes or similar articles and a mold for producing the same. In a preferred three-tiered form, the intermediate tier is a lattice defined by the intersection of two superposed sets of parallel bars. These two sets of bars are formed by two pairs of correspondingly channeled slides that cooperatively engage to form a portion of the mold cavity corresponding to the lattice. The channels in each set of slides are aligned with the path of movement of the slides to permit their sliding, uniaxial movement relative to the molded bars. To further enable this sliding movement between mold segments and the molded rack, the connecting supports between the top tier and the intermediate tier are provided on the sides of the rack, while the connecting supports between the intermediate tier and the bottom tier are provided on the front and rear of the rack.

Abstract: A mold assembly for producing a plastic container having internal compartments separated by partitions. A male mold is slidably moveable into a female mold and includes a plurality of upstanding cores to form the container with injectors provided to force plastic melt between the molds and between the cores. A plurality of side locking members are reciprocably mounted in the cores and when extended contact adjacent cores limiting relative motion therebetween. The locking members form holes in the partitions formed between the cores. The locking members are withdrawn only after the plastic melt is cooled.

Abstract: An apparatus and method for manufacturing a wire matrix print head print wire guiding device which allows automatic insertion of manufacturing wires in a mold, which wires after molding define curved passageways in the molded print wire guiding device through which the print wires may subsequently be automatically threaded. The molding apparatus includes a great enough plurality of thin, apertured inserts for supporting the manufacturing wires so that an aperture in each insert, through which a manufacturing wire passes, directs the manufacturing wire into the corresponding aperture in the next adjacent insert in the mold. The print wire guiding device manufactured with this apparatus and method is inexpensive to assemble with print wires in a wire matrix print head, because the print wires can be threaded by automated means.

Abstract: An apparatus for forming miniaturized optical components such as fiber optics connector terminals in which a three-part mold set is employed to attain precise concentricity of mold cavity formations carried by two of the three mold parts which are movable axially relative to and positioned by the third or central one of the three parts. The two movable parts are each located by oppositely diverging frustoconical reference surfaces on the central part and include mold surface components which are axially positionable relative to the parts in which they are carried. The central part is supported by a shuttle for movement between a molding position and an ejection position, appropriate ejection pins being located in spaced relation to the molding position so as not to interfere with the molding operation.

Abstract: The invention relates to a process and apparatus for manufacturing adapter blocks with channels and making a mold system for producing the blocks. The adapter blocks have channels in at least one surface and connection openings running through the thickness of the blocks.For forming the connection openings the mold has anchoring pins and it is designed for producing more than one adapter block at a time. The casting material is supplied into the mold from below and along one long side thereof. Gasket plates with nipples are placed on the connection side or sides, such nipples being received in conical connection openings.

Abstract: An adapter block having fluid channels is made up of at least two parts bonded together. At least one of the parts is made up of an integral skin foam material, more specially polyurethane. A foam-molded core of this material is covered over by an integrally molded, unfoamed skin. At the faces that are to be bonded the skin is first machined away by a roughening tool. A mold for producing the adapter block is made up of two mold end parts with hollows to take up mold pins so that mold pins or stoppers may be put therein. The mold end part opposite to the end part with the pins is made of an elastically soft material. The mold pins may have concave end faces.

Abstract: Arrangement for the die casting of a roller bearing cage having pockets for the rolling bodies includes an outer housing covering the die casting mold and having guide openings opening at the central planes of the respective pockets and main and auxiliary slides arranged side by side in each guide opening. The main and auxiliary slides have guiding surfaces at their inner ends directed at an angle to the central plane, the guiding surfaces being laterally opposite one another and supporting one another. Each auxiliary slide has a lateral bulge on the side thereof opposite the guiding surface of the guide opening for defining a lateral limit wall of the pocket with holding projections for the rolling bodies on the inner and outer edges. The arrangement in accordance with the invention requires few components, provides a compact construction, and is economically produceable. The main slides are each operable from the exterior of the apparatus, and have recesses with inner and outer shoulder surfaces.

Abstract: The installation comprises a rectangular, parallelepipedal, leaktight steam chamber (1) provided with a gate (2) on one of the short sides, inside which a tubular fixed mold (4) of perforated steel plate is attached at a distance from the walls of the chamber, the shape of the mold corresponding to the external shape of the panel to be obtained. A first set of fixed, parallel, perforated metal tubes (5), inside the mold (4), possesses lateral holes (9) for the passage of a second set of perforated or non-perforated metal tubes (10) firmly fixed to a movable external support (11), passing through one of the short walls of the steam chamber (1) and capable of moving perpendicular to the tubes (5) of the first set, passing through the latter. The chamber (1) is provided with inlet valves (13) for the partially expanded synthetic material, an inlet (14) for steam and an inlet (15) for a cooling fluid.

Abstract: Improved mold structure and method of molding for mechanically frothed urethane foams is presented. The mold is filled from the bottom via an annular runner which communicates with the mold cavity. The connection between the annular runner and the mold cavity is restricted to create a back pressure in the circumferential runner.

Abstract: A poured concrete forming system for spa pools, and the like, comprises a form having two collapsible form members each having a closed perimeter. The lower form is shaped to fit within the perimeter of the upper form, and is positioned directly thereunder. A reinforcing grid is mounted within the upper form to securely retain the upper form panels in the preselected configuration, and also suspendingly supports the lower form. The assembled forms are set into a reservoir, such as a hole in the ground, and concrete may be poured about the form to create a monolithic spa pool construction.

Abstract: The invention provides apparatus and method for forming concrete blocks, panels and the like with a reduced number of parts and production operations. The apparatus and method of this invention is contemplated for use at a concrete-mixing plant having the usual components such as mixers, hoists, cranes, and other transport facilities available at most modern mixing plants. The apparatus of the invention includes a pallet having a generally flat upper surface. In addition, there is provided a generally rectangular mold frame having four integral and generally vertical upstanding sides. The frame is generally open on the top and bottom and is dimensioned for matably mounting on the pallet. Cavity-shaping means are mounted within the frame and above the pallet for shaping block-forming molding cavities which are arranged for receiving concrete aggregate thereinto, whereby blocks may be formed by the deposition of the aggregate thereinto.

Abstract: In a method and apparatus for casting or molding cages for rolling elements, two slides are provided for each pocket. The slides have an engaging, inclined surface, and are shaped to permit one of the slides to be removed by initially sliding it along the inclined surface. The other slide may thereby be moved laterally in the formed pocket, and withdrawn from the pocket. Facing slides of adjacent pockets may be joined together, with limited movement possible therein, to form a complete ring serving as a mold member.

Abstract: A kit for assembling a geodesic structure is disclosed as including a plurality of polygonal panels (12) preferably of triangular shapes so as to be assembled to define a sphere (10). Each panel is of a unitary construction molded from plastic and includes a first set of male lugs (20) and a second set of female lugs (22) projecting from its sides (14). The female lugs (22) are arranged in pairs and spaced along the length of the associated panel side so as to receive a male lug (20) on one side of another panel in order to provide a connection (16) therebetween. Outer ends on both the male and female lugs include connection surfaces (24, 26) that snap into engagement with each other as the male lug (20) of each connection (16) is inserted between the associated female lugs (22) in order to secure the panel sides (14) and thereby prevent relative movement between the panels lengthwise and transversely with respect to the length of each side.

Abstract: A method and device for producing a slotted concrete vertical wall. A pair of vertically extending forms having vertically extending ridges are positioned on the final use site of the slotted wall. The ridges of one mold are positioned adjacent and aligned with the ridges of the second mold. A pair of forms are located outwardly and adjacent the molds with a plurality of ties extending through the ridges of the molds being secured to the forms connecting the molds and forms together as concrete is poured between and around the ridges. The forms and molds are removed once the concrete is solidified leaving the slotted concrete wall permanently in the position poured.

Abstract: Mold for injection molding battery containers which include a plurality of thin resilient ribs integral with and projecting at acute angles from the inside walls thereof into the cell compartment(s) to hold the battery's innards therein. The core of the mold includes a mandrel defining the cell compartment. The mandrel has dovetail-like mortises therein and complementary-shaped ejector bars reciprocally slideable within the mortises between retracted and extended positions to facilitate stripping the container from the core. The rib-forming portion of the mold cavity is formed in the side walls of the ejector bar. The ejector bars travel with the container during at least part of the ejection cycle so as to free the rib from the rib-forming cavity without untoward resistance or permanent deformation of the ribs.

Abstract: Mold for injection molding battery containers which include a plurality of thin resilient ribs integral with and projecting at acute angles from the inside walls thereof into the cell compartment(s) to hold the battery's innards therein. The core of the mold includes a compartment-shaping mandrel which in turn includes ejector bars reciprocally slideable within complementary-shaped mortises in the mandrel. Rib-forming cavities are formed in the side walls of the ejector bars. Lips at the distal ends of the ejector bars project toward the mortise walls to produce undercuts at the bases of the ribs which in turn result in the formation of ribs which are detached from the bottom of the container.

Abstract: A plastics gutter fitting (8, 11) has at least one transverse groove (10,17) receiving a sealing strip (16) and an inwardly turned clipping nib (9,15) extending across at least one end of a said transverse groove (10,17). The fitting is molded using a three part core of which two outer parts (4,4') can be moved convergently relative to a central part (3) for releasing a molding (8) therefrom. This molding method enables the reentrant where a clipping nib (9,15) extends across an end of a transverse groove (10,17) to be molded integrally in the fitting.

Abstract: A method and apparatus for producing fishing lures incorporating hook hangers which utilize a bore formed in the lure body as part of the connection mechanism. Injection molding techniques are utilized to fill cavity molds having removable inserts therein.

Abstract: A mold having a desired print head shape includes a cover in which a plurality of rods or ductile fibers are attached, the cover being positioned with the rods extending into the mold and to the side opposite the cover. A hardenable synthetic material is introduced through a hole in the cover and after hardening of the material to form the print head, the rods are withdrawn from the mold to leave bores or apertures in the print head which serve as passageways for the droplets of ink.

Abstract: This relates to an injection mold assembly wherein there is a plurality of cavities which are spaced from a center of the mold assembly and wherein each cavity has therein a core so that a thin wall article, such as a preform for a blow molded bottle, may be accurately formed by injection molding. Previously experienced differential in temperature and thus expansion differentials causing core-cavity misalignment are overcome in accordance with this invention by supplying the core retainer plate, which is normally cooler than the cavity retainer plate, with a heater for elevating the temperature thereof as required.

Abstract: A foam-producing mixture is poured directly into a mold, whose base is constituted by an inner movable wall and outer stationary wall which is provided with supports passing through holes in the inner wall in order to retain mattress springs by the frustums of cones. The springs also bear against an upper wall of the mold and are held solely by the forces of cohesion of the solidified foam.

Abstract: The following specification describes a paint can mold in which a pair of concentric ring members and cores at diametrically opposed positions create concentric mold cavities for forming projecting bushings on the pail, each having a concentric handle bearing. The plastic for forming each bearing and a handle interconnecting the bearings passes through a gate in each ring member. Withdrawal of the ring member severs the plastic in the gate from between the bushing and bearing so that the handle is free to rotate on the bushings. Means are provided to prevent disassembly of the handle from the can.

Abstract: An article having two sections which are articulated to one another by at least one hinge that includes a substantially spherical male hinge member disposed within a recess provided by a surface of a female hinge member. The hinge includes retaining means for confining the male hinge member within the recess while permitting rotational motion of the male hinge member within the recess. The male member is a continuous molded extension of one section of the article and the female hinge member is a continuous molded extension of the other section of the article.A mold for use in manufacturing the above-described article includes upper and lower mold sections which, when brought into mating relationship with each other, provide article section forming compartments adjacent to each other for forming the sections of the article. A female hinge member forming compartment communicates with one of the section forming compartments. A mold segment interrupts the female hinge member forming compartment.

Abstract: A molding machine adapted to selectively mold conduits having rows of ducts in one or more tiers. Means are provided, in a carriage section, to selectively connect and disconnect any of a plurality of mandrels adapted to reciprocate with the carriage to vary the number of tiers to be molded, while a platform in a mold receiving section can be selectively raised to a number of positions to cooperate with the selected mandrels.

Abstract: A method and apparatus for making concrete slabs to be used in the construction of walls or floors in buildings. The slabs can be made of desired thickness as, for example, from 8 inches to 24 inches and of lengths which also are optional as, for example, from 8 feet to 12 feet. Assemblies of core members are disposed on opposite sides of a cavity, to be moved back and forth with respect to the cavity for molding recesses in opposite edges of a slab and to be retracted therefrom when the concrete has set to the desired extent. The mold assemblies each comprises a plurality of core members spaced longitudinally of the cavity and when moved to inner positions will leave an open space therebetween for molding a central web in the slab, with transverse webs extending out to the lateral edges of the slab. Additional core members may be disposed between the main core members. The small core members will form longitudinal openings through the slab. The release of the mold assemblies is in two steps.

Abstract: The means for creating perforated concrete casing comprises a hollow cylindrical canister having a plurality of spaced apart rows of elongated openings formed therein. The elongated openings in each row are horizontally disposed and are vertically spaced. A first support means is secured to the outside surface of the canister adjacent each row of openings. A plurality of vertically spaced plates are mounted on each of the first support means and are selectively movable into and out of the openings of the associated row. A second support means extends upwardly through the canister and has a plurality of vertically spaced wedges mounted thereon. The second support means is movable towards the canister so that the wedges will penetrate the stiff concrete positioned adjacent the inside surface of the canister so as to create tapered perforations therein.