Abstract: A mold comprises a pair of openable and closeable mold halves separable along a parting line. By this invention, each mold half defines a recessed outer surface portion which communicates with the recessed portion of the other mold half in the closed position. Each mold half defines a bridge portion which extends over its recessed portion and is positioned adjacent to the parting line. Thus, a lifting hook may pass into the recess defined by the outer surface portion to engage the bridge portion of a separate mold half, or to engage both bridge portions of both mold halves in the closed position.

Abstract: A guide pin assembly is described which unidirectional orients mold platens while permitting temperature compensating movement in a perpendicular direction. This is accomplished by using a guide pin and shoe that contact in one direction and permit movement in a perpendicular direction. A bushing containing preloaded bearings is disposed about the guide pin such that the bearings make contact with the shoe to reduce wear and permit the guide pin to slideably contact the shoe.

Abstract: An injection mold for injection molding a plastic substrate for high-density information recording medium. An annular sliding member is axially slidably supported in the circumference of a disk-shaped cavity of a mold half. The annular sliding member is biased toward the surface of a disk-shaped cavity provided in another mold half so as to form the molding cavity and maintain contact with said surface during molding of said plastic substrate.

Abstract: The invention relates to a plastic jug or flask, in particular a plastic jacket of an insulating jug or flask that is produced by injection moulding in a multipart injection mould having axial separation joints, and has on the jacket surface a relief ornament which exhibits substantially vertical and spiral projections defining between them resilient jacet surface strips. The problem underlying the invention is to design the jug or flask so that it can be produced in a two-part injection mould. This problem is solved in that the jacket surface strips (14) make, in the region of the single separating joint of a two-part injection mould, exterior angles with the median axial plane (E) of the insulating jug (1) or of the plastic jacket (2) equal to or slightly greater than 90.degree..

Abstract: The present invention has as an object an adjustable mold for the manufacture of concrete elements such as staircases of the type having a straight line extent, of which the treads are perpendicular or not perpendicular to the risers.

Abstract: Apparatus for reducing the waste area in a mold for an article molded from a heat-fusing material by a powdered vinyl process, has a mold box disposed adjacent the backside of a mold surface for controlling the temperature over respective first and second areas of the mold surface. The waste area elimination is accomplished by isolating and insulating the section of the mold defining the waste area. A kerf is cut into the mold around the waste area to isolate the area. The kerf is filled with castable silicone to insulate the waste area from the heated segments of the mold. To obtain the coating, the mold is filled with powdered vinyl and the excess material is removed from the mold by dumping the plastisol from the mold into a return tank.

Abstract: Apparatus for producing moldings from flowable reactive components comprising(a) a mold assembly having two halves surrounding a mold cavity,(b) a mixing device for combining said reactive components mounted on said mold assembly, said mixing device having a mixing chamber,(c) a supply channel in said assembly for supplying said components from said mixing chamber to said mold cavity,(d) a throttle device located between said mixing chamber and said mold cavity, said throttle device capable of moving into and out of said supply channel in a direction transverse to the orientation of said supply channel, thereby forming a throttle zone in said supply channel,(e) a relaxation chamber located in said supply channel between said throttle device and said mold cavity, said apparatus further characterized in that the dividing plane which separates the mold assembly into halves extends through said supply channel, said throttle zone and said relaxation chamber.

Abstract: The invention relates to a moulding device for the manufacture of semi-hard pressed cheeses from a liquid pre-cheese, such a device is made in two superposable parts, adapted to be removably assembled together in water-tight manner by a spigot-like interlocking joint, at least one of these parts comprising moulding cavities. The upper part may be constituted by interchangeable individual moulds or by an assembly of moulds connected to one another, and the lower part is a plate provided with grooves for interlocking whose configuration matches that of the base of the moulds or mould assembly. The lower part may be constituted by a multi-mould plate comprising upwardly open half-cavities for moulding and grooves for interlocking and the upper part is constituted by a counter-mould plate comprising downwardly open half-cavities for moulding, complementary of the half-cavities of the multi-mould plate, and ribs for interlocking.

Abstract: Molding forms for precast concrete portal assemblies are described. The molding forms include adjustable form surfaces for precasting different shaped portal assemblies from the same basic mold. The molding forms herein are particularly designed for molding portal assemblies for use at either or both end of box culverts which provide passages extending under a longitudinal embankment at skew angles rather than transversely perpendicular to the embankment access.

Abstract: A mold having a concrete base and a mold cavity member lined with sheet metal. Adjacent the sheet metal are electric heating means and between the electric heating means and the concrete base is a light-weight concrete insulating layer.

Abstract: A mold for forming an elliptical elastic ring is provided and consists of a pair of plates, each having a mating cavity to form an elastic ring with same circumferential length as a circle of given diameter whereby the mold can be reduced in size in one direction for economic advantages.

Abstract: Apparatus for manufacturing multiple color thin-walled hollow shells for parts such as automobile door panels, consoles and instrument panels from dry thermoplastic plastisol includes a supply box with a divider to form two or more compartments in the box. The box divider cooperates with selectively positioned split mold parts defining a separation in an open-ended heated mold for separating the mold into two or more sections. Complementary open ends of the charge box and mold are joined. Then the apparatus is rotated so that the powder is distributed into each mold section by gravity flow with the powder from each section flowing to the divider which separates the colors so as to form two or more tones on a resultant shell of cured material; thereafter the powder box is removed and the split mold parts are joined to clamp cast shell segments for fusion at a joint line.

Abstract: The base mold is made from a single sheet of plastic material and is adapted to receive a specimen and either (1) a tissue processing cassette, or (2) an embedding ring. A fluid/solid fixation material is poured into the base mold and allowed to solidify in order to fix the specimen to and adjacent an outer bottom surface of the cassette or the embedding ring while the cassette or embedding ring is being supported by the base mold. The base mold includes a cassette/embedding ring supporting panel and a tissue receiving receptacle integral with and depending from the supporting panel. The base mold further includes a support formation integral with and depending from the cassette supporting panel. The support formation extends at least part way around the receptacle and includes a lower edge disposed in one plane to provide a sturdy supporting edge for supporting the base mold on a planar surface.

Abstract: A mold for forming a plastic cap and removing a cap from such a mold. The mold comprises female and male members which, together, form a mold cavity in which the cap is formed. The female member includes an upper assembly and a plurality of cams. The cams have radial protrusions engaging the male member to form annular recesses in the cap. The cap is removed from the mold by moving the upper assembly of the female member axially and the cams thereof radially away from the cap, and then removing the cap itself from the male member of the mold. Preferably the cap is shrunk onto the male member to develop a space between the cap and the female member of the mold prior to moving the female member away from the cap.

Abstract: A casting apparatus for receiving electrophoretic gel trays is disclosed. The casting apparatus includes a pair of spaced apart seal elements which are movable with respect to one another to provide one or, more openings of varying size to receive a corresponding gel tray therein. The open ends of the gel tray are sealed by the seal elements so that hot argrose or polyacrylamide gel may be poured into the gel tray for forming a gel layer of predetermined thickness. The seal elements are maintained in sealing engagement with the open ends of the gel trays by means of a rod frictionally engaged between a portion of the housing forming the casting apparatus and one of the seal elements.

Abstract: Pile fabric molding apparatus which incorporates a plurality of pin like members to allow the pile of the fabric being molded to pass therebetween while the pins contact the substrate of the pile fabric to maintain it at a position spaced from the mold member.

Abstract: A method is disclosed for increasing productivity when casting Vee configuration engine blocks in a given size, two-part refractory mold having a single parting plane.

Abstract: A system for mounting a gear member having gear teeth tilted in one direction onto a core pin of a mold. The gear member is a part of a drive gear member that rotates a pick-up spindle of a used ribbon in a cassette. The gear forms a center hole having a rim that has at least three keys that are adapted to slide upon at least three keyways formed by the core pin. The keys are positioned at such angular distance that a mirror image of the metal key member and the keys would not be adapted to be received by the keyways of the core pin.

Abstract: A device for the manufacture of molded parts from molding materials, includes a molding tool being completely closed, having a molding cavity formed therein and being divisible, a heating device having two heating plates disposed on top of each other and fastened to the molding tool, the heating plates being in mutual contact along respective contact surfaces thereof, at least one of the contact surfaces having slots formed therein, and tubular electrical heating elements with metal cladding press-fitted in the slots.

Abstract: An electrophoresis apparatus including a mold for forming a vertically disposed electrophoresis gel slab where the slab is of uniformly increasing thickness from top to bottom and method of fabricating the mold and the gel slab.

Abstract: An assembly element for steel reinforced truss-type panels is cast as a one piece unit in a mold so constructed that the struts of the element are rigidly secured to the upper and lower chord directly as the result of the casting. For this purpose the mold has a lower bottom cap, an upper top base and laterally movable side wall sections. A pair of lateral side wall sections interconnects a bottom cap portion and a top base portion to form a mold part. Thus, the number of mold parts correspond to the number of struts in the element, whereby the element may be removed from the mold in spite of the fact that the top chord and bottom chord are rigidly interconnected already in the mold.

Abstract: The present invention relates to a mold structure for forming a polymeric gasket around a predetermined portion of a sheet of transparent material such as glass, for example. The mold structure includes two cooperating mold sections for defining a chamber for receiving the transparent sheet. A seal is positioned about the periphery of the chamber and is utilized to resiliently support the sheet within the chamber. Also, the seal cooperates with a predetermined portion of the transparent sheet for defining a gasket cavity having a configuration corresponding to the gasket to be formed on the sheet of transparent material. An inlet communicates with the gasket cavity and is utilized to introduce a flowable gasket material into the gasket cavity.

Abstract: A vertical gel sandwich for use in electrophoresis and a method of assembling is provided by the use of a pair of T-shaped spacers between the two plates of a gel sandwich. The stem of the T spaces the plates apart to form the gel slot and the head of the T being flush with the sides of both plates provides for alignment of the spacers and also prevents shifting.

Abstract: Fabricating techniques for forming insulated electrical connectors of the type to be subsequently mounted in panel apertures including techniques for simplifying the mold required to form such connectors and improvements in the connector itself and the manner in which that connector grips edges of an aperture in which it is mounted are disclosed. In its preferred form, the insulated electrical connector has a pair of generally flat parallel opposed side walls each provided with staggered notches oppositely extending from opposed side wall edges toward and slightly past one another in an overlapped and interleaved manner to form in the region of notch overlap a pair of slots extending generally parallel to one another and transverse to the notches.

Abstract: A process for fabricating a closed, generally flat plastic object such as a surfboard, in one embodiment comprises the steps of:(a) providing a disassemblable mold having at least four parts comprising a bottom part, a top part and a pair of side rail parts, the interior surface of said mold having the desired shape of the exterior surface of said object;disassembling said mold and applying a clear gel coat to the interior surface of each said mold part;(c) applying laminations of a resin and reinforcing material mixture to each of said mold parts;(d) applying a layer of toluene diisocyanate to at least said top and bottom parts;(e) subjecting said top and bottom parts to a vacuum until said layers of toluene diisocyanate are each firmly adhered to the respective laminations of said mixture;(f) affixing the side rail parts to the bottom part forming a cavity therebetween;(g) coating the interior of the cavity with a resin and reinforcing material mixture;(h) allowing the resin mixture to become structurally s

Abstract: An inexpensive, cellular plastic mold and method of preparation, wherein the plastic mold comprises male and female mold elements which define a mold cavity therebetween, each of the elements comprising a rigid thermoplastic foam or cellular board material having a smooth, integral, solid layer of a plastic material forming the facing surface of the mold cavity and a relatively thick, solid, supporting layer of a plastic material forming the back surface of the mold elements.

Abstract: An adjustable cast iron or ductile iron manhole frame and method of construction utilizing a formed concrete base or a base of brick and cement mortar that supports both the frame and the pavement. The height and angle of the frame are determined by the method of construction which sets the height and angle of the formed concrete base. The frame is further adapted to receive and hold the manhole cover, and the frame includes an arched section to hold it securely to the concrete base or to filler material when in a raised position.

Abstract: A mold for molding a wheel cover for a vehicle road wheel by injection molding of a synthetic resin or die casting of a light metal alloy, the wheel cover being a one-piece member having spoke-like portions extending obliquely with respect to both the center axis and radii of the wheel cover. To form the spoke-like portions each as a straightly extending portion, one of the two mold members which can be brought into contact with each other to provide cavities therebetween has a portion in the form of a truncated pyramid and the other is recessed to have a plurality of flat faces which are respectively opposite to and can mate with the flat side faces of the truncated pryamid, and these side faces or the flat faces in the opposite mold member, or both, are formed with elongate and straight grooves in which the spoke-like portions are formed.

Abstract: In a mould assembly for multiple castings each mould is fed from a source of molten metal through a thin slit the width of which lies in the range 1.25 mm to 0.25 mm. The cast articles can be easily removed from the runner and riser system after casting without a machining operation so that the casting moulds can be packed closer together and more castings can be produced from each mould assembly. The thin slit also acts as a filter. A particular mould assembly seen in FIG. 2 is cylindrical and comprises a plurality of wedge-shaped mould segments 2 having mould cavities 4 in abutting faces. A central runner passage 6 is formed when the mould segments are assembled and the metal flows into the mould cavities through narrow slits 10 in one edge of each mould. After casting and removal of the mould the narrow flashing formed in the slits can be easily broken to remove the cast articles from the metal formed in the central runner passage.

Abstract: There is disclosed herein a flow-through medical filter element which includes surface or depth filter media and a frame-like structure for supporting and positioning the media. The frame-like structure is a molded member which includes a ring-like inlet, a fluid-impervious terminal end spaced from the inlet and a plurality of rib-like members which extend between and interconnect the inlet end and terminal end. The inlet end includes internally-extending pleat-supporting projections and the terminal end has complementary externally-extending pleat-supporting shoulders. The frame-like structure is symmetrical about an axial plane which includes the mold parting line. The external shoulders are formed at angles which permits separation of a mold along the parting line and release of the part. The filter media also includes longitudinal pleats and is secured at its ends to the pleat-supporting projections associated with the inlet end and to the external pleat-supporting shoulders at the terminal end.

Abstract: A mould used for making a racket frame comprises an upper mould piece, a lower mould piece and an intermediate mould piece which cooperate to form a cavity that imparts a racket frame shape with the parting line of the mould pieces lying apart from a plane X-X that passes through stringing holes which will be drilled in the frame formed in the mould, thereby avoiding the performing of the deflashing operation at the portion near the stringing holes and preventing the damage of the fiber reinforcement for the string at that portion.

Abstract: A split-mold safety lock for preventing unintended separation of mold components during lifting and manipulation thereof. The invention employs a split ring capable of being swiveled in a circle of 360.degree. and being pivoted in an arc of 180.degree. around a perpendicular axis there in a base. A safety lock is associated with the ring base for permitting separation of the molds for a molding operation and to automatically assume a locked configuration upon lifting. The split-mold lock is capable of being utilized on multiple parting lines of a plurality of mold parts.

Abstract: A mold assembly for use in injection molding an object having an aperture therein, includes first and second interlocking portions which are separable from each other along an axis which is perpendicular to the axis of the aperture. The aperture is formed by an elongated core which is stationarily defined on one of the mold portions and conformingly engages the other mold portion when the mold is closed. The mold portions are drawn into tight, interlocking engagement with each other by wedge-shaped surfaces adjacent the core and respectively defined on the mold portions, thereby preventing flashing from forming over the aperture during the molding process.

Abstract: A box-like pallet provided with a bottom and two or more interconnected, upright side walls. The two side edges of at least one side wall are connected to the adjacent side walls, in an upwardly and downwardly movable manner relative to the bottom, by means of at least two strips which are pivotably mounted on the side walls.

Abstract: A method, apparatus and resulting assembly wherein a concrete pipe reinforcing cage assembly is spaced from the walls of a pipe-making form by means of several spacer bars, each comprising a tie rod to which are secured a plurality of links. The spacer bars are inserted into the case assembly with the links projecting generally radially therefrom and the resulting final assembly is inserted into the pipe form with the ends of the spacer links engaging the pipe form and spacing the cage assembly therefrom.

Abstract: This invention relates to a method of producing a dam comprising the steps of exposing transmission members 4 by stripping the sheath 3 of a communication cable, covering the exposed portions of the transmission members 4 with a mold 5 and injecting self-curing resin 2 into the mold 5 to cure it. A resin which is cured while being foamed is used as the self-curing resin. The resin 2 is foamed in the mold after being injected into the mold while it is still not foamed. The resin 2 has the pressure increased by increasing the fluidity resistance of the resin 2 as it progresses to be cured when the resin 2 intrudes into gaps between the transmission members 4 within the sheath 3, which is caused by an expansion of volume of the resin 2 during foaming whereby the resin 2 is cured under a high pressure.

Abstract: A press to be used in the synthesis of diamonds, the press has a cavity which receives a movable press member, with both the cavity and press having co-operating inclined surfaces which co-operate to define enclosed cavities to receive a base material from which diamonds are manufactured.

Abstract: After arranging on dual pans two thick strips of a deformable fiber-reinforced spongeous material and covering them with a liner made of an elastic cloth, a fluid polymer is poured into said pans which reacts to set and foam in a conveniently short time. During the setting time, the user keeps his/her feet fixedly inside the pans, to thus leave an impression which accurately reproduces the shape thereof. After setting, the deformable strips is bonded to the liner and retains the exact impression left by the foot.Successive trimming operations provide an insole taylored to fit the user's feet.

Abstract: A bracing unit to secure a formwork panel to falsework or to a previously poured concrete structure includes a pressurized fluid inflatable and expandable hose and a rigid abutment member for supporting the hose and holding it against the outside surface of the formwork panel.

Abstract: In a die, punch and core rod assembly for a powder compacting press wherein the core rod or rods remain stationary while the punch or punches are reciprocable relative to the die, the invention provides individual longitudinal position adjustment for the core rods by fitting the end of the core rods in a threaded member such as a set screw threading in a threaded bore in a core rod support member. The core rod support member is in the form of a pair of plates one defining a core rod support plate and the other a retainer plate, sandwiching a plastic locking plate. The core rods are immobilized in their adjusted position by the plastic locking plate, sandwiched between the core rod support plate and the retainer plate, being provided with a threaded bore aligned with the threaded bore in the support plate and having a slight screwthread mismatch with the threaded bore in the support plate.

Abstract: The injection molding of brushes, particularly miniature brushes such as for the application of cosmetics, is carried out in a mold in which each of the cavities defining the bristles is defined by a plain surface of one mold piece and a grooved surface of another mold piece. The mold pieces are clamped together and a brush is formed by injection molding. An ejector rod facilitates removal of the molded brush from the mold, thus making it unnecessary to separate the mold pieces to remove the molded brush. However, the mold pieces may be unclamped and separated to allow the mold to be cleaned of foreign matter or broken bristles.

Abstract: A fiberglass reinforced plastics steering wheel is disclosed and a mold and method for making same. The wheel is made by disposing binder and the fiberglass in an annular cavity and in ramp-like radial cavities of a mold and are pressed into shape by a wedge-shaped member.

Abstract: A capstan for use on a tape transport, including a hub, a tubular outer rim supported co-axially about the hub, and a body portion of foam plastic between the hub and rim.

Abstract: Truncated contact lenses are produced in a direct casting operation using a mold assembly of a male mold member and a female mold member, both of which have molding surfaces and only one of which is provided with an inwardly flexible continuous rim portion. When vulcanizable or polymerizable constituents are placed in the mold, the two mold members are brought together, the flexible rim is flexed inwardly and the finished lens of the desired shape is obtained. The flexible rim is composed of a circular portion having two ends and a straight line connecting the two ends. This defines a chord and provides the finished lens with the truncation desired.Preferably the lens also has a toric surface and prism ballast to assist in positional stability of the lens on the eye of the wearer.

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: A die, punch and core rod assembly for a powder compacting press wherein the core rod or rods remain stationary while the punch or punches are reciprocable relative to the die. The invention provides individual longitudinal position adjustment for the core rods by fitting the end of the core rods in a threaded member such as a set screw threading in a bore in the core rod support plate. Alternatively, the invention provides for position adjustment of the core rod support plate by supporting the support plate below the die plate by spacer sleeves having a threaded peripheral portion threading in a bore in the core rod support plate. By combining an adjustable core rod support plate with individually adjustable core rods, the core rods can be adjusted longitudinally relative to each other, and in unison by way of the position adjustment provided for their support plate.

Abstract: What is disclosed is a method for making a foamed resin sheet from a body of hot foamable synthetic resin containing a blowing agent, which method comprises heating said foamable body to a temperature which initiates foaming, limiting lateral expansion of the resulting foam by contact with a limiting surface while permitting free expansion of the foam thickness, then limiting further expansion of the foam thickness by contact with a limiting surface, and then cooling the foam below the foaming temperature while maintaining said limitations on foam expansion in the lateral and thickness directions by contact with said limiting surfaces.

Abstract: The invention contemplates mold tooling adapted for the molding of a variety of thermoplastic parts. The mold comprises two die elements which carry die-insert plugs, and the mutually facing surfaces of these plugs determine the shape of the part to be produced. In order to retain the insert plugs (3, 4) in the die elements (1, 2) in such manner that they can be simply and easily replaced, that surface (7, 8) of an insert plug (3, 4) which faces its supporting die element (1, 2), and that surface (5, 6) of the supporting die element (1, 2) which serves to receive the involved insert plug (3, 4), are developed as polished spherical surfaces of the same radius R.sub.N. Each interchangeable insert plug has a spherical seating surface of the same spherical radius R.sub.N.

Abstract: A bucket shaped container having a rim opening smaller than the diameter of the sidewall thereof is injection molded from thermoplastic material using a die set including a molding core which collapses to allow axial removal of the molded container from the mold. The molding core comprises a plurality of individual, wedge shaped outer core sections which collectively form a continuous molding surface and are slidably mounted on a tapered inner core to allow axial sliding movement of the outer core sections relative to the inner core. Each of the outer core sections is also mounted for radial sliding movement on a mounting plate which circumscribes the molding core and is mounted for reciprocating axial movement relative to the inner core. Reciprocation of the mounting plate produces simultaneous axial and radial movement of the outer core sections throughout their entire lengths between an expanded molding position and a collapsed container releasing position.

Abstract: A .[.container.]. .Iadd.method .Iaddend.for hot consolidating powder of metallic and non-metallic composition and combinations thereof by the application of heat and pressure .[.wherein the.]. .Iadd.to a thick-walled and regularly shaped .Iaddend.container .[.includes.]. .Iadd.having .Iaddend.a mass of container material which is substantially fully dense and incompressible and is capable of plastic flow at .[.pressing.]. .Iadd.conventinal compaction .Iaddend.temperatures, a cavity of .[.a predetermined.]. .Iadd.an irregular .Iaddend.shape formed within the mass for receiving a quantity of powder, the mass including walls around the cavity of sufficient thickness so that the exterior surface thereof does not closely follow the contour of the cavity whereby, upon the application of heat and pressure to the container, the mass acts like a fluid to apply hydrostatic pressure to the powder contained in the cavity.