Abstract: Gypsum models and molds made of a gypsum structure uniformly dispersing therein carbon fibers having a predetermined length in a defined range of amount are described. The molds include various types of molds such as original mold, basic mold, forming mold and the like. A method for manufacturing these molds is also described in which sizing agents deposited on carbon fibers are decomposed and removed by heating or dissolution in solvent, separating the carbon fibers into single fibers in water, adding a major part of gypsum powder to the carbon fiber dispersed water to obtain a gypsum slurry dispersing uniformly those single fibers, and casting the slurry in a case mold to obtain forming molds. A method for manufacturing white wares is also described in which a pottery or porcelain slip is casted into the gypsum forming molds, removing the resulting green product from the mold after hardening and drying the green products.

Abstract: A receiver for casting molten material formed by the steps comprising forming a mixture comprising particulate ceramic powders and a binder; adding the mixture to a mold disposed to form board-like members and hardening the mixture; removing the hardened mixture from the mold; reducing the permeability of the board-like members, cementing the board-like members together to form a receiver and coating the receiver with release agents. Specifically, the receivers are used in the casting of high purity silicon for solar energy cells.

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: This invention relates to the field of medical instruments and particularly to an applicator used to apply a frozen solid such as ice to a wound or injury to treat the wound or injury. The invention is comprised of first and second container means. The first container means has an open top of a predetermined size, a tapered side wall and a bottom having a central opening therethrough. The second container means has a shape conforming at least in part to that of the first container means, an open top and a closed bottom. The two container means are fitted together by placing the bottom of the first means into the top of the second container means. The device can then be filled with liquid and frozen until needed. When in use as an applicator, the second container means is removed and the first container means serves as a handle for applying the frozen solid.

Abstract: A mould part which is intended to be brought together with at least one other mould part, to form a closed mould cavity in which plastics objects can be shaped. The mould part comprises a composite mould body which includes a support section (10) made of rigid material and having a surface whose shape corresponds to the shape of the object to be formed, and a mould shell (2,3,4) which is detachably arranged on said surface and which is suitably made from a plastics material having an extremely fine surface which serves as the moulding surface. The mould shell can be readily replaced, at low cost, with a new mould shell, after having been in use for a given length of time. The invention also relates to a method for manufacturing mould parts in accordance with the above, and to the use of such mould parts.

Abstract: A method and apparatus are disclosed for imparting a desired shape to a paperboard blank. The blank is formed between two dies for a sufficient length of time and with sufficient force to set the form, while moving the dies in tandem along a predetermined portion of a reciprocation path. Because the formed blank remains in dwell while the dies are moving in tandem, it is not necessary to hold the dies stationary to ensure permanent formation of the blank. This allows greater production speeds.

Abstract: Apparatus for high volume preparation of cross-sectional specimens of printed circuit boards for microscopic examination, including a method and apparatus for precision mounting of a large number of such cross sections in a single molding sequence for simultaneous polishing of such cross sections in a single polishing operation.

Abstract: Proposed models are used for forming into destined shapes liquid, slurry, soft, sheet or lump materials, and are provided with endurance for many times of use and excellent permeability. A basic feature is that aggregates are ferrous or non-ferrous metallic grains and ceramic grains, to which a binder contained in evaporating or consumable substance is added and kneaded, and sintered. The mode has a close hardened layer scattered with metallic oxides on at least a shell. The hardened layer has fine air vents in its thickness. The whole body of a model is 5 to 60% of porosity and more than 100 Kg/cm.sup.2 of compression strength.

Abstract: A gasket assembly for casting optical lenses includes a first gasket member having a cylindrical opening therethrough and an annular flange extending radially inwardly in the cylindrical opening. One surface of the flange is adapted to receive a casting lens die, and may be disposed in a plane not perpendicular to the axis of the cylindrical opening. A second gasket member is adapted to be received in the first gasket member, and includes an inwardly extending annular flange having one surface adapted to mate with the flange of the first gasket member. The other side of the annular flange of the second gasket member includes a shaped surface adapted to receive a lens casting die having the capability of conferring on the cast lens any combination of power and cylinder characteristics, the shaped surface being configured to mate and seal with the peripheral area of the compound surface of the die.

Abstract: An improved mold is provided having an abrasion-resistant reinforcing means disposed at the junction between the mold and a rotating means for resisting wear occurring therebetween as a result of the installation of the mold on a rotating wheel. Preferably, the reinforcing means comprises a hardened plastic ring having a smooth surface facing the drive wheel, and the ring is partially embedded into the mold to attach it to said mold.

Abstract: A method and apparatus for applying a uniform sealant coating over the portion of a fastener (14) exposed above a panel (10, 12) includes depositing an amount of uncured sealant (S) in a cavity (44) in a sealant retaining shell (40). The shell and sealant is applied over the exposed portion (22) of the fastener (14) and the retaining shell is brought into contact with the panel such that the uncured sealant is entrapped between the shell and the exposed portion of the fastener and the panel. As descent is made onto the fastener, a slight rotating motion may be used to adjust the sealant around the fastener equally. The sealant is allowed to cure and thereafter the shell is removed leaving a uniform sealant coating over the fastener exposed end.

Abstract: A forming tool made from resins and fillers for the cold forming of sheet metal and especially suitable for forming short runs of sheet metal parts with drop hammers, hydraulic presses or mechanical crank presses, the filler being a mixture of iron filled resin and an aggregate; the aggregate being a lightweight by-product of the steel making process.

Abstract: Apparatus for encapsulating electronic components in plastic includes a press with upper and lower press members, upper and lower flat plastic carrier plates, and transfer injection means. The plates from a closed cavity and support the electronic component.

Abstract: A bag (1) for use in the shaping of liquid food products or stimulants consists of two plastics foils (2, 3), which are welded together in such an area of the two foils as will provide a plurality of interconnected mould cavities (4) with a common inlet (5). In the mould cavities (4) there are placed sticks (6) which are held in position by the positioning in a channel (8) having a length and cross-section corresponding to the holding part (7) of the stick (6). When the bag is filled with liquid ice cream or a similar material, the mould cavities (4) are distended three-dimensionally, and when the length of the sticks (6) is suitably dimensioned with respect to the length of the mould cavities (4), the sticks will be firmly "fixed" within the mould cavities (4). The sticks (6) are therefore placed in the middle of the ice lollies formed after freezing.

Abstract: A cheese mold of polyolefin material having a non-woven inner layer of polyolefin fibers which is heat welded to the mold surface is disclosed. A method for manufacturing the mold is also provided. A non-woven layer of fibers is provided and a liquid mass of plastic is heat sealed thereto by extrusion or injection molding.

Abstract: A mold apparatus for forming ring-shaped magnet from a plastic magnet material containing a magnetic powder under the influence of a magnetic field, comprising a stationary intermediate composite retainer plate and a movable intermediate composite retainer plate, the former being put on the latter, said movable intermediate composite retainer plate consisting of at least one cylindrical or inversed frusto-conical cavity block made of a magnetic material having a ring-shaped cavity, at least one cavity block holder made of non-magnetic material embracing and holding the cavity block and at least one cylindrical or inversed frusto-conical magnetism shielding member made of a non-magnetic material and disposed concentrically and in contact with the lower side of the cavity, said stationary intermediate composite retainer plate consisting of at least one cylindrical or inversed frusto-conical sprue block made of a magnetic material, and at least one sprue block holder made of a non-magnetic material embracing and

Abstract: A plastic cheese mold comprising on its inner wall a non woven of thermoplastic fibers heatsealed to the walls of the mold, said cheese mold comprising two shell halves forming an elongate cheese mold of a substantial equal cross-section over the length of the mold.The shell halves engage movable clamping sledges and the bottom of the shell halves may be provided with a pivot.The mold also comprises an outer bottom recess for coupling a follower.

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 mold features on its work face a thermally insulating protective layer of sub-micron metal oxide particles.The coating can be applied by spraying an aqueous sol of a metal oxide onto the mold work face which has been heated to at least 60.degree. C.The use of sub-micron sized metal oxide particles enables the formation of a protective coating of very low density and consequently very low thermal conductivity. The coating can furthermore be deposited very economically, and likewise removed again.

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: The disclosure relates to a vacuum sizing device for cooling and sizing plastic extrusions immediately downstream of the extrusion die. The device includes a plurality of pairs of upper and lower sizing elements which are clamped between upper and lower backing members. The elements are shaped to define a passageway through the sizing device having a cross-sectional shape and size corresponding to the required profile shape and size of the extrusion. Vacuum chambers and cooling chambers are provided in the sizing elements.

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: An improved apparatus for making dough envelopes containing filling. The apparatus is molded from plastic and includes a frame structure having a plurality of interconnected hexagonal molds so as to form a honeycomb type structure. Each hexagonal mold includes six inclined cutting edges which are connected around a central inverted conical chamber. The inverted conical chamber partially supports the dough envelope during formation to produce uniformly shaped and aesthetically pleasing envelopes. Further, horizontal pasting faces are provided in the corners of each mold between the conical chamber base and cutting edges lower edges. These horizontal pasting faces in combination with the cutting edges provide a strong and uniform seal around the dough envelope edges.

Abstract: A die for compacting powder by dynamic compaction. The die is intended for compaction pressures substantially above 1 GPa. The die is made of a mixture of a plastic material and a metal powder. The die has the same density before compaction as the powder to be compacted. Furthermore, the die undergoes the same increase in density during compaction as the powder being compacted. The die is cheap relative to a steel die and can, thus, be made for single use. The range of geometries possible to compact is greatly extended.

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: A cheese mould having a wall of plastic material, which wall is provided with fine holes and the inner surface of which may be provided with grooves, said inner surface being subjected to a roughening treatment, for instance rubbing with a steel brush, course sand paper, a rasp or a scouring substance, so that small scratches are made, in order to improve the rind forming properties of the mould.

Abstract: Thermally collapsible core of three to five solid carbonaceous segments of generally equal volume and of wedge-like shape arranged around a collapse axis of the core in narrowly spaced apart relation to each other. Core includes spacers occupying a minor portion of the narrow spacing nearest the external periphery of the core and which are made of metal, glass, ceramic or mixtures thereof having a melting point below the highest temperature to which the core is subjected by molten material solidifying therearound, e.g. fusion-cast refractory. The segments are the larger parts of the core. Heat transferred from solidified molten material to core causes spacers to melt and allow segments to collapse inwardly toward collapse axis to accommodate cooling shrinkage of casting without cracking. Melted spacers can drain downwardly out of core. Design yields highly quenched microstructure in fusion-cast refractory, which is especially beneficial in tap hole blocks for steelmaking furnaces and vessels.

Abstract: Food products are processed prior to consumption in a press form having multiple, separate, pre-selected planar food product molds, each having tapered walls, providing easy food product removal. The food products can have pastry dough exteriors and can be filled with selected food fillings held in position and shaped by dough crust exteriors. Multiple press form food product molds have regular planar shapes disposed multiple in a tray. One face of each product mold has a cutting-edge knife disposed thereon, conforming to the mold interior shape. The cutting-edge knife can be disposed at either mold wall taper terminus. A cooperatively shaped, one-piece negative pusher plug mold, sized to intercept each one of the multiple food product molds disposed in the tray, is used to cooperatively push each food product out of the molds in the tray simultaneously.

Abstract: A peripheral edge-containing member is provided to reduce the length of the projectile path of fragmented particles expelled outwardly from the peripheral edge of a frangible pressing plate which is broken during the press-stretching or press-polishing of acrylic sheets. The acrylic sheets are fabricated for use in light weight transparencies.

Abstract: Disclosed herein is a mold assembly including first and second mold members assembled together to define a mold cavity, which first and second mold members each include a peripheral surface extending outwardly from the cavity, a gasket captured between the peripheral surfaces, and one or more tubes extending through the gasket and between the peripheral surfaces to provide communication between the cavity and the atmosphere.

Abstract: The invention is referring to a storage carrier to be used in a fermentation interrupter for the production of rolls or similar products with a pattern. The first stage of such rolls are dough crudes in form of dough cuts whose ends are rolled or wrapped up towards the center, where they are forming a contact seam. It is necessary that during the later baking process this contact seam is ripping up or cracking and there is resulting the so called pattern (Ausbund). The possibility to produce such rolls from the dough crudes is depending on different effects during the procedure in the fermentation interrupters. For ensuring on the one side a sufficient raising effect and to prevent on the other side the access of too much air humidity, it is proposed to provide a storage carrier with a supporting framework having deepenings for taking up the dough crudes as well as a textile cover and a foam plastic layer between the supporting framework and the textile cover.

Abstract: A molded refractory slab for positioning in a barbecue grill between the burner unit and the heat-supporting grate has a plurality of uniformly spaced bosses simulating coals projecting upwardly from its top surface and integral dam means connecting adjacent bosses near the periphery of the slab to form a parapet for containing grease and rendered meat juices on the slab and preventing their dripping off the sides of the slab into the fire. The mold in which the slab is formed is of light-weight disposable material and is used as a protective container for shipping unfired slabs, which can then be fired during initial use of the slabs in barbecue grills.

Abstract: A press mold having upper and lower jaws for pressing and molding articles of ceramic material. Each jaw supports a die, at least one of which has a molding matrix. A press ring mounted around the die having the matrix. Upper and lower contoured parts made of synthetic material or rubber are respectively mounted on the upper and lower die by adhesive. Each contoured part has a matrix. One of these matrices has an inner contoured edge which corresponds to the outer edge contour of the molding made by the press mold and having an outer contoured edge at least in the areas of the smaller diameters of the molding with respect to the areas of the largest diameter of the moldings in the direction of the surface of the molding which protrudes beyond this inner contoured edge and which has an even contour, such as a circle.

Abstract: A replaceable individual proofing cup for use in proofing English muffin doughballs and comprising a flanged, flat-bottomed, cylindrical receptacle formed of porous, interlocked-fiber wool felt and having minimum draft in its sidewalls giving good doughball release characteristics for depositing proofed doughballs into grilling cups of a conventional traveling English muffin griddle and minimum lay in its bottom so as not to restrict lateral growth of the doughballs when proofing.

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: A mold for slip-casting and the like comprising: a gypsum or other water pervious body having a three-dimensional network of chopped glass fiber filaments having a water wettable surface thereon and in an amount of more than 924 lincal inches of filament per cubic inch of the water pervious body. The preferred mold is a gypsum mold having from 4,621 lineal inches of filament to 46,210 lineal inches of filament per cubic inch of gypsum.

Abstract: A composite cylindrical mold for making rubber covered rolls comprises an outer rigid tube and an inner hollow cylindrical sleeve, with the space between the tube and the sleeve being filled with a cured elastomer. In preparing the mold, a heat shrinkable polytetrafluoroethylene tube etched on the outer surface is disposed around a rigid mandrel and heat shrunk thereon. The mandrel and sleeve are then inserted into the rigid tube in concentric relation. Curable rubber is then injected under pressure between the tube and the sleeve and the rubber is cured, causing the inner surface of the sleeve to conform exactly to the surface of the mandrel. The mandrel is then removed, and the inner surface of the sleeve is used as a molding surface for rubber covered rolls.

Abstract: A process for producing laminated glass-plastic lenses utilizing optically finished glass-ceramic mold components having specified thermal expansion, strength and thermal conductivity characteristics in a direct casting procedure wherein the lenses are cooled in the molds after curing to provide high selections of physically durable lenses.

Abstract: Composite ceramic shell molds for investment casting and subsequent directional solidification of nickel and cobalt base superalloys is described. The composite ceramic shell mold is composed of an inner component having an alumina content of at least 80 percent and an average thickness of about ten mils and an outer layer composed predominantly of zircon having a thickness of from 0.1 to 0.4 inches. The alumina component of the shell mold is wet by the superalloy material and this wetting action is believed to cause the substantial elimination of a surface defect problem known as chain porosity. The zircon component of the shell mold had desirable mechanical properties and may easily be removed from the solidified casting. The alumina and zircon components are bonded together in such a fashion that they will not separate during the casting process.

Abstract: A provolone cheese molding apparatus constituted by a fixed, horizontal table having a single circular hole within the table, a chute depending from the table and aligned with the circular hole, and means for pressing warm cheese upwardly within the chute. A slide on the upper face of the table reciprocates horizontally and includes spaced circular holes within the slide for selective alignment with the table holes. Cylindrical provolone cheese loaf forming tubes are vertically mounted to the slide coaxial with the holes and receive the cheese when aligned with the chute to form cylindrical provolone cheese loaves. The tubes are formed of lightweight light transmitting plastic, and each bears a plunger disc of a light contrasting color which moves with the cheese as it rises internally of the tube to indicate the extent of filling of the tube.

Abstract: A shapeable matrix is provided for use in making of graphic art reproductions and in particular as a mold in forming of printing plates and other marking items.

Abstract: A method and apparatus for forming molded ice sculptures includes a selection of molds fabricated of form retaining, flexible, resilient plastic material. Each mold includes holes in the base thereof through which supporting wires are placed. The mold is inverted, base up, within a box slightly larger than the mold, with the wires impinging on the box and supporting the mold. The mold is filled with water and frozen. Thereafter the mold is removed from the box, the wires removed from the mold and the mold stripped from the frozen sculpture.

Abstract: Method for making a novel shell mold for use in directional solidification and for casting alloys containing reactive components, wherein a binder comprising a fibrous colloidal alumina in aqueous dispersion and being essentially free of silica, is employed. The resultant shell mold is particularly suitable for the casting of nickel and cobalt based alloys containing relatively reactive constituents such as zirconium, alumina and titanium.

Abstract: Investment casting molds embodying a material comprising Al.sub.2 O.sub.3 flour with an average particle size less than 100 microns and silica binders exhibit superior physical properties at elevated temperatures up to about 1800.degree. C. The superior physical properties, including an excellent resistance to sag at about 1800.degree. C., are attributed to the formation of a metastable mullite phase. When the average particle size of Al.sub.2 O.sub.3 is less than the order of 10 microns, resistance to sag is present up to about 1900.degree. C.

Abstract: A mold especially adapted for forming precast, waffle-shaped concrete panels employs a one-piece mold body of plastic sheet material to provide a reusable mold structure that may be rapidly stripped and reset. Each corner of the mold body is open; thus, the sides of the mold present pliable flaps due to the inherent flexibility of the sheet material and are swung outwardly after molding is completed in order to release the molded product. External reinforcing members on the sides maintain the same rigid and true during the molding process. The corners are held closed by simple locking devices which are readily released for stripping. Raised portions in the mold body form the characteristic voids in the molded waffle product, and are reinforced and rigidified by a foam filler.

Abstract: Silica- or alumina-containing granules are loaded into a mold of which the inner walls at least are formed of a nonbonding material constituted of ferrochromite, magnesiochromite, calciochromite, or trivalent-chromium oxide. The mass is then heated to a temperature above the softening point of the granules so as to fuse them together and thereafter the heated mass is hardened. As the mass can inherently not bond to the lining of the mold subsequent separation is relatively easy.

Abstract: Two molds, each comprising an open top container having side walls, end walls, and a bottom, are provided for forming blocks of snow or ice which are used to form a complete domed structure such as an igloo. The configuration of one mold is such that blocks formed by it will fit together to form a circular upwardly converging wall, and the configuration of the other mold is such that blocks formed by it will fit together to form a circular dome which rests on the upper surface of the wall to complete the structure.

Abstract: A frame structure for casting a concrete building panel has a plurality of panel edge molding frame members with a generally U-shaped cross-section, a plurality of panel corner frame members with a configuration which corresponds to the angle of the corner of the panel. A number of edge molding frame members and the corner frame members are assembled in a panel molding frame with a length and width corresponding to the length and width of the panel to be molded with the ends of the edge molding frame members connected by the panel corner frame members, and with the opening of the U-shaped cross-section facing inwardly of the panel molding frame. Connectors rigidly connect the edge molding frame members to each other and to the panel corner frame members and a liner structure is provided in the interior of each of the edge molding frame members. The surfaces of the liner structure facing the space within the panel molding frame has a shape complementary to the shape of the edge of the panel to be molded.

Abstract: Forming tool comprising a shaped structure that is porous and air-permeable and that is made from a reactive resin and at least one inert filler.