Abstract: A mould for the manufacture of thermally insulating semi-elbows for pipes comprises mating male and female mould parts definng therebetween an annular mould chamber extending for 360.degree. about a central axis, the mould parts being provided with holes or apertures for blowing overheated air into the mould chamber to produce a moulded shaped product from a mixture of mineral fibres and a polymerizable resin when placed in the mould chamber.

Abstract: A core pin for use in a plastic injection mold for forming a hole through a part as it is formed in the mold. A shaft is longitudinally slidable in one of the base members of the mold and extends through the cavity of the mold and abuts the inner face of the opposing base member. A spring biases the shaft toward the second base member. When the mold is open the shaft has a small amount of positive clearance. When the mold closes the spring is compressed and the shaft has zero clearance against the inner face of the second base member, regardless of dimensional changes of the mold.

Abstract: Concrete elements and a lifting mechanism are secured against tilting at the time of form removal, and the formwork is fixed in place. In the apparatus, a forming unit, a concreting unit and a form removal unit are provided. The forming unit has a single rigid form adapted to shape the bottom and the sides of the elements or products, is open on top and is assembled for use as required. The form removal unit has means for maintaining the product and the removal unit itself in a fixed position against tilting, as well as means for maintaining the formwork in a fixed position, and means for actuating them.

Abstract: Mold and core rod combination for forming a plastic parison for stretch/blowing into a plastic bottle comprising a core rod with an end mated to the mold so as to permit formation of a parison with a flat on the bottom and having a sharp taper from said flat to the sidewall of the parison. The core rod is preferably shaped to include a shoulder having a substantially straight outer wall at the mouth end of the parison mold, and constructed and arranged with the mold to permit deposit of additional plastic at the inner wall of the shoulder of the parison. The design of the mated mold and core rod combination is based on the recognition that in a continuous bottle forming process a particular area of the parison can be made hotter or cooler by increasing or decreasing the thickness of that area of the parison.

Abstract: A group of molds, or baking tins, for placement of dough therein and in which the dough is baked. Each mold includes a bottom element surrounded by an upturned rim. The dough thus baked, in each mold, forms a rigid panel, and those panels are fitted together to form a gingerbread house, the molds including one for each of the walls, and the roof. The panels are fitted together and secured by placing icing in the junctures between the panels. The apparatus also includes a plurality of inserts or cookie cutters that are pressed into the fresh dough when it is put in the molds, and each cuts and isolates a piece of the dough from the main mass, that piece also being baked, and after the dough is baked, the inserts are removed, and the pieces are also removed, either by adhering to the inserts and being lifted out, or by being knocked out. This leaves openings in the panels which form windows and doors, and the pieces, or knockouts, are used to form a chimney to the house.

Abstract: A form for preparing a poured concrete hollow shape having a transverse hole through a wall of the shape comprising a form of at least one releasable section, a central core for said hollow, and a core for said transverse hole abutting said central core and said releasable section; said transverse hole core having a surface of a fluorocarbon elastomer where said surface is contacted by poured concrete.

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: A dummy lens for molded-to-shape eyeglass frame front molds including mold halves defining rim forming channels and a central bridge forming channel. The dummy lens comprises a lenticular disc having a periphery ridge adapted to define the groove for the ultimate ophthalmic lens and an axial projection extending from the concave side of the disc and having a cylindrical portion for centering the dummy lens and a tapered portion at its free end defining a draft. The disc and the tapered free end of the dummy lens bear against respective opposed plateaus of the half molds.

Abstract: An apparatus for producing a cage made of castable or injection moldable material for cylindrical rollers in which the pockets of the cage are defined by webs having projections projecting into the pockets at their longitudinal sides for radially retaining the rollers comprising slide plates radially moveable for forming the roller pockets, each slide plate being formed of several partial slide plates, the end faces of the slide plates having cover plates arranged thereon to cover the connection juncture between the partial slide plates and secured to one of the partial slide plates.

Abstract: A mold unit and method for casting ceramic material in slip form is described. Each mold unit comprises a plurality of parts which when assembled for a casting operation define between them, two casting cavities, the casting cavities are positioned one above the other, into which slip can be introduced to form discrete articles and when removed from the mold while in the green condition are assembled to form a composite article.

Abstract: An injection mold for coaxial cable joints comprises a longitudinally split inner sleeve of duralumin which is placed around the cable joint and a longitudinally split outer jacket of steel. The outer jacket has a bore closely fitting the inner sleeve. The two halves of the outer jacket are readily assembled and disassembled by the use of axially engaging dovetails. The sleeve and jacket have cooperating filling and vent holes and the outer jacket is formed with integral heating and cooling channels.

Abstract: Mold for making a tooth positioning and retaining appliance with air holes including a cavity having models of the upper and lower teeth arranged so that when an appliance is molded thereby the appliance will have upper and lower archways for receiving upper and lower arches of a person, tooth sockets in the archways arranged in ideal relationship and preselected positions to urge the teeth received thereby into the preselected positions of the sockets. The mold additionally includes air hole or airway forming means extending across the models of the teeth in the mold and being insertable into the mold prior to the molding operation and thereafter removable from the mold with the molded appliance. The air hole forming means is easily separable from the appliance to ultimately define the air holes between the archways and between the labial and lingual sides of the appliance.

Abstract: A container (1) is provided with a cover (2) which has a guarantee strip (4) which can be divided along a design tearing line. In this arrangement, the guarantee strip (4) engages under a holding bead (9) and at the same time is protected from unauthorized manipulation of the guarantee strip, by a protective bead (10). So that the container which is produced by an injection molding process can be produced by means of axially openable molding tools, the holding bead and the protective bead are interrupted in such a way, and are arranged offset relative to each other in gaps, in such a way, that the respective holding bead (9) only extends, on the outside wall of the container, over the length over which the protective bead (10) is interrupted. In this way there is no undercut configuration at any point, which would prevent axial retraction of the molding tools or axial ejection of the container.

Abstract: The mold according to the invention is in two opening parts. Its first part defining the lower sole face and presenting spiked holes, delimits receiving recesses shaped to complement the molded heads of the spikes and adapted to receive the corresponding heads while ensuring a perfect contact capable of preventing any of the molding material from filtering in, whereas the second part of the mold, defining the upper sole face and provided with bosses projecting opposite the said holes, comprises push-rods on the bosses conjugated with the recesses, to hold the corresponding heads in position inside the latter when the mold is closed.

Abstract: A mould for producing concrete mouldings having a frame and a plurality of moulding boxes therein with the moulding boxes removably fastened directly to the bottom end faces of the frame.

Abstract: A mold comprising an elongated hollow cylinder having at least two parts that can be locked to form said cylinder, a core having an inflatable cover, said inflatable cover having means to fix the cover on said core, an upper and lower seal for said core capable of forming a tight seal with the core when the cover is inflated on the parts of the cylinder.

Abstract: An apparatus for casting toilet tanks from ceramic material in slip form is disclosed. A plurality of mold parts which include two side mold parts which when assembled define a casting cavity and a core part which is positioned in the mold cavity and is spaced from the mold surfaces of the two side parts to define the front back and side walls of the toilet tank. One of the side mold parts includes an integral base for forming the bottom wall of the tank. Each side mold part arranged in a general horizontal line and are shiftable longitudinally to open and close the mold unit.

Abstract: Method for slip casting toilet bowls and as mould for casting ceramic material in slip form, including a compartment having an air impermeable wall and arranged, in the casting position of the mould, so that when the mould is filled with slip air is trapped in the compartment. The compartment is located at a region where casting is not to occur and the trapped air not only achieves this but also prevents the surface of the compartment from becoming wetted, thereby making subsequent cleaning easier. The compartment may be formed either in a plaster mould part and its surface rendered air impermeable, or in a separate part made of air impermeable material, and assembled with the plaster mould parts. The mould is particularly suitable for casting a water-closet bowl, the compartment being located at the region where the open top of the bowl is formed.

Abstract: This invention provides a single core pin for use with a mold that may be rearranged to provide a plurality of molded configurations. The core pin is characterized by a plurality of arcuate segments 11 arranged to make up a cylindrical core pin 10. On at least one of the arcuate segments 11 there is along the outer surface thereof at least one radial projection 12 extending a predetermined axial distance along the surface.

Abstract: A mold having an integral piece for casting a hygienic-sanitary appliance is disclosed. The mold includes a lower mold piece, at least two lateral mold pieces which are mounted on the lower mold piece to define a molding cavity for an article to be cast. An upper mold piece is mounted in position on the lateral mold pieces to close the mold cavity; the lateral and upper mold pieces being separable from the lower mold piece and the cast article to leave the latter resting on the lower mold piece. Below the cavity of the mold there is provided an annular or partially annular shaped base to support the cast article.

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 precision injection-molded form for an inductance coil comprises a cylindrical core member having a surface of relatively low dimensional precision, and a thin plastic layer molded over the surface to provide a surface of high dimensional precision for supporting the windings of the coil. Metal insert-members having threaded axial bores and radially-extending wing portions are provided at either end of the core to establish electrical contact with the winding and a mounting capability for the assembly. The coil form is formed by injection molding techniques and apparatus which provide for axial compression of the assembly prior to molding to obtain a predetermined longitudinal dimension, and for equalization of forces exerted during molding to prevent longitudinal deformation.

Abstract: A mold for casting ceramic material in slip form is disclosed. The mold comprises a plurality of mold parts of which one constitutes a seat made of a non-casting material, the other mold part or parts being made of casting plaster, a surface region of the seat, in the assembled mold, forming part of the casting cavity, which surface region is bounded by closely adjacent region of the other mold part or parts such that during casting a solid cast portion of the article is cast against the seat, the mold parts being adapted so that the mold can be opened after casting to leave the article on the seat whereby the article can be lifted away on the seat.

Abstract: A molding machine is disclosed which can be used in the manufacture of concrete building elements. A method for the molding of concrete modular units using the disclosed concrete molding machine is also provided. The molding machine is constructed of vertical walls joined to form a single outer frame which is moveable up and down by means of expandable joints such as pneumatic or hydraulic cylinders which allow positioning and vibration of the outer frame. To said outer frame are attached horizontally expandable joints which support at least two mold sides which can be placed in abutment by the action of the expandable joints so as to form the continuous sides of a mold. The bottom side of the sequentially assembled mold is provided by a metal plate to which the aforesaid sides are lowered or attached.

Abstract: Disclosed herein is a radially parted mold comprising a plurality of mold segments each having cavities that taken together define the shape of a propeller with a tapered hub when the mold segments are joined together along their parting surfaces. The parting surfaces include parting lines which run along the edge of the propeller blade. The edge of the propeller blade is the centerline of the blade (1/2 the thickness of the blade). There are the same number of mold segments as there are blades on the propeller and each mold segment has a first cavity defining the rear face of an adjacent propeller blade, a second cavity defining the rear face of an adjacent propeller blade, and a third cavity defining a portion of the propeller hub.

Abstract: A deflector for use on an automatic molding machine deflects incoming sand downwardly onto the drag table and then upwardly into deep recesses in the pattern. The sand deflector is formed as a rectangular prism from a single block of metal, and has two deflecting channels separated by a strengthening septum. The channels are arranged at a predetermined angle in relation to the mounting surface of the deflector.

Abstract: The method of making valued plastic articles, such as game tiles and the like, comprising providing in one of a pair of separable mold members ejector pins for forcibly ejecting the tiles and severing them from residual plastic and providing in the other mold member protuberances which form indentations in one face of each tile which are essentially identical to indentations formed in the other face by the ejector pins. Indicia designating the value of a tile is subsequently applied to either face, the necessity of sorting of the tiles prior to application of indicia being eliminated by the invention.

Abstract: A mold assembly is disclosed for making a reinforcing panel structure including female and male molds with each mold having a base surface with four sided projections extending upwardly from the base surface to a raised surface. The projections of each mold are spaced from the next adjacent projection in that mold in a first direction a distance equal to the dimension of the projection in that direction plus a predetermined dimension which is double the thickness of the rib of the panel and with each projection spaced from the next adjacent projection in that mold in a second direction perpendicular to the first direction a distance equal to the dimension of the projection in that second direction plus a predetermined dimension which is double the thickness of the rib of the panel. Each of the projections have embossments thereon.

Abstract: A method and apparatus for a universal winding arbor including an arbor core adapted for use with a plurality of differently sized arbor blocks in winding transformers of different sizes. Each differently sized arbor block may be formed in a unique mold which includes a vertically adjustable side and horizontally adjustable side to vary the thickness and width respectively. The arbor core is centered within the mold and a liquid resin is allowed to cure in the mold to form the winding arbor.

Abstract: The invention is concerned with an apparatus and process for curing tread and track belts. The apparatus comprises a plurality of inner segments which fit together to form an outer generally cylindrical mold face surface of an inner cylinder along with means for retracting said plurality of inner segments towards the axis of said inner cylinder and means for heating said plurality of inner segments. Also part of the apparatus is a plurality of outer segments which fit together to form an inner generally cylindrical mold face surface of an outer cylinder, said outer cylinder being coaxial with said inner cylinder and of generally equal length therewith, along with means for retracting said plurality of outer segments away from the common axis of said cylinders and means for heating said plurality of outer segments.

Abstract: The present fishing lure has a molded elastomeric body with a deep, narrow, longitudinal recess in which the curved hook end of a fishhook is concealed. The present apparatus for making this lure includes an insert for forming this recess which is separate from the molding dies and is removable from the elastomeric body after the latter has been molded. The fishhook may be part of this insert, so as to be molded in place in the lure body, or it may be inserted into the lure body after the latter has been molded. In one embodiment the removable insert forms an inclined passageway for passing water up from the bottom of the lure body into its aformentioned recess to impart a wiggling motion to the lure as it moves through the water.

Abstract: Disclosed herein is an apparatus for forming a plurality of hot dog buns provided with a recessed area formed at the inception of the bun making process, so as to naturally accommodate a hot dog. One technique according to the present invention contemplates cooking the hot dog buns separately from the hot dog and inserting the hot dog at a later time when it is to be consumed, or alternatively inserting the hot dog into the partially cooked bun after the recess has been formed in the bun so that the hot dog and the bun cook simultaneously.

Abstract: A molding apparatus for manufacturing a molded golf club grip includes a mold member having a generally cylindrical shaped cavity disposed therein and defined by an internal annular surface. The cavity has a longitudinal axis and a circular cross sectional configuration. An elongate core bar is disposable within the cavity with the longitudinal axis of the cavity and the core bar being coextensive. The core bar has an external surface which is spaced apart from the internal annular surface of the mold member when the core bar is disposed in the cavity and the annular surface of the mold member cooperates with the external surface of the core bar to define a molding cavity for receiving a moldable material therein for molding a golf club grip.

Abstract: An artificial mamma having characteristics similar to a natural mamma consisting of a molded body made of a homogeneous resilient plastic material, the molded body being substantially closed but for a relatively small bottle neck shaped orifice at its human body engaging surface, and enclosing an internal cavity in the configuration of a thrust type cup spring for providing a certain resiliency and oscillation behavior and for compensating axial and radial forces.

Abstract: A method and mold for producing a concrete slotted floor for supporting animals. The mold includes a bottom part with a smooth top surface with lengthwise extending ridges formed thereon. The top part of the mold locks to the bottom part and includes a plurality of parallel slab separators seatable upon the ridges. The top part includes end walls and side walls defining an enclosure for receiving the poured concrete. The slab separators are spaced apart from the end walls allowing the concrete to extend completely around each separator to form integrally joined concrete slabs. Concrete is poured into the top part of the mold between each separator and across the ends of the separators. The mold is vibrated and the concrete is allowed to solidify. The top part of the mold is then lifted upwardly and the solidified concrete is removed and turned over in order that the smooth surface of the concrete contacting the bottom part of the mold faces upwardly.

Abstract: A cooking utensil kit includes a large generally circular mixing bowl and a center post. The center post is in the shape of a truncated cone having a height approximately the same as the sides of the bowl and is adapted to serve as a container. A generally hemispherical knob is formed at the center of the base of the mixing bowl and the post has a complementary hemispherical indentation in its base. The post is adapted to be centered in the bowl at the knob so that it may be plunged into batter in the bowl and the bowl may then be used as a pan for preparing ring-shaped foods. The kit also includes a serving dish which also has a knob formed at the center of its base and is adapted to receive and center the post. Either the bowl or dish may serve as the top to the other. A fourth component of the kit is a trivet upon which either the bowl or the dish may be supported or which may be placed in the bowl or dish.

Abstract: A mold for injection molding of long thin walled articles has precisely balanced high-volume venting of a narrow cavity space surrounding a long slender cantilevered core and minimized flash. The venting is provided by closing an end of the female mold cavity with a sintered metal plug and forming an end of the mold cavity in an end face of the plug.

Abstract: Disclosed is an apparatus and process for the molding of hollow articles such as full length Foley catheters. The apparatus preferably comprises a mold with two lumen forming wires longitudinally disposed therein. A set of two receiving wires are spaced distally from the distal ends of the lumen forming wires and are longitudinally aligned therewith. A first follower is slidably disposed about the lumen forming wires in close abutment with the wires and inside wall of the mold. The first follower is preferably disposed toward the proximal end of the mold and preferably at least two other followers are provided spaced distally of the first follower. One of the other followers preferably bridges the space between the lumen forming wires and receiving wires. Sets of gates are preferably provided along the length of the mold in fluid communication with a source of molding material.

Abstract: A mold for parts of a building such as the floors, walls, ceilings and roofs mounted on a supporting frame which rests, via a resilient member, on a supporting member through which extend heating tubes provided with heat radiating ribs. The bottom of the mold is the top of the heated space within the supporting member and frame. One or more of the sides of the mold are pivotable from projecting members extending outwardly from the supporting frame and clamping devices are provided to clamp the sides in position and against the floor mold. Columns may be included in the mold and are positioned by suspension members provided on the mold sides. A tile mat for positioning tiles may be placed on the floor of the mold. Reinforcement may also be positioned in the mold. For an outer wall, a layer of concrete followed by a layer of polystyrene foam and an inner layer of a lightweight material may be introduced and cast in succession in the mold. The inner mold sides may be profiled as desired.

Abstract: A horticultural container assembly including a container which has an open end pot and a hollow sub-base defined by an annular wall provided by an extension of the annular wall of the pot beyond the normal perforated base of such a pot, the annular wall of the sub-base terminating at a base rim for supporting the pot on a support surface with an inner peripheral wall thereof extending upward from the base rim to the perforated base and, a cup shaped saucer of a size to be telescopically received fully within the hollow sub-base by the inner peripheral wall. The perforated base, inner peripheral wall and base rim of the pot have means associated therewith for cooperatively providing with the saucer at least one drain-vent passage that is open at one end to the exterior of the sub-base of the container and having its other end in communication with the perforated base and with the interior of the saucer.

Abstract: A method of and apparatus for the manufacture of dynamically balanced molded plastic air movement devices wherein material may be readily added or deleted from inactive surface portions of the air movement devices during manufacture by adjustable pins accessable from the front or face of a mold half.

Abstract: Process for sealing a block formed of a piling of spaced plates while preserving passageways between several plates and on at least one edge of the block, comprising inserting into the intervals between said plates the teeth of a comb adapted to substantially fill these intervals, casting a solidifiable material on said edge and withdrawing the comb after the casting operation, said teeth being made of a non-adhesive material with respect to the solidifiable material of the casting. This process and the resulting sealed blocks are particularly useful in the field of fuel cells.

Abstract: An apparatus for molding articles free of seams and parting lines including a one-piece flexible mold which is deformable and which includes a rigid core member, and a vacuum pot which is used to cause the mold to expand radially outwardly to allow the molded article to be released. The core member may comprise a rigid central mandrel which is rigidly embedded in the bottom wall of the mold and which is hollow and includes ports such that a pressurized catalytic gas may be injected into the mold material to cause a bonding agent to set.

Abstract: Production line apparatus for producing concrete floors. A table for supporting a concrete receiving mold is movably mounted atop a frame. Shaking means connected to and between the frame and the table shake the table settling the concrete within the mold. A pair of conveyors extend from the table to convey the mold from the table. The conveyors extend over the table but beneath the mold supporting surfaces provided on the table. The conveyors are lifted upward against the mold lifting the mold from the table. A mold turning over device is positioned at one end of the conveyors and is operable to receive the mold and to turn the mold upside-down repositioning the mold atop a second pair of conveyors. A hoist extends over the second pair of conveyors and is operable to lift the mold upwardly leaving the solidified concrete floor atop the second pair of conveyors. The mold is lifted and positioned between a pair of spaced apart return conveyors which extend back toward the shaker table.

Abstract: A method and apparatus for producing a casting having a curved internal passage includes die or mould means and core means including at last three parts, said parts being dimensioned and arranged to abut one another so that at least part of the joint line on the surface of the curved passage lies on a surface of revolution accessible from one end of said passage, two of said parts being capable of withdrawal along their respective axes from the ends of the passage, the third core part being of metal, and being arranged to define the inside portion of the curve of the passage, and being dimensioned so that its width is less than the diameter of the curved portion of the passage, whereby said third core part may be withdrawn from said passage.

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: The adjacent ends of two waveguide elements are coupled in mutual alignment by being slid into a suitably dimensioned through bore of a coupling block from the two flared ends of the bore respectively, preferably in the presence of a small quantity of a liquid having a refractory index similar to that of the waveguide elements and preferably also having adhesive qualities to retain the waveguide elements in their mutually abutting coupled position in the block. The coupling block is preferably formed by casting, using a low-shrinkage resin such as epoxy resin in a mould whose end walls have aligned bores for a stainless steel wire which extends through the mould cavity to form the through bore of the block, this wire being withdrawn after setting of the resin. Preferably tapered core portions through which the bores extend coaxially, are provided in the mould and withdrawable endwise to permit removal of the cast block from the mould cavity.

Abstract: A die-cast peripheral housing for the rotor of rotary combustion engines, having cast-in passages for liquid cooling, the passages providing optimum wall thickness and coolant flow at the region of high heat input.