Abstract: Disclosed are methods for production of plastic optical fiber connectors specifically for production of plastic plug ferrules employable for plastic optical fiber connectors, wherein improvements are realized to decrease the production cost thereof, to enable accurate finished dimension thereof, to enhance the advantage of mass production thereof, and to decrease the connection loss thereof.

Abstract: A method of making hard surface prototypes or styling concept models by assembling a contoured polystyrene foam pattern and applying an epoxy clay-like material in two steps to replace the surface of the polystyrene foam pattern. The polystyrene foam pattern is first assembled from blocks cut out to design drawing specifications. The pattern is then shaped to the design contour. The surface of the pattern is then grooved and the grooves filled with the epoxy clay. The remainder of the pattern surface is then removed and replaced by more epoxy clay which is then sanded and finished with paint and suitable trim pieces.

Abstract: A method of making a top toothed endless power transmission belt construction that is formed mainly of polymeric material and a belt construction made by such method are provided, the method comprising the steps of disposing the material in substantially cylindrical form on a substantially cylindrical drum-like support member, disposing a substantially cylindrical toothed member about the disposed material, compressing one of the members toward the other of the members with the pressure of pressurized steam to form top teeth in the material and cure the thus formed material with the heat of the steam into a top toothed belt construction, introducing pressurized steam against the other member during part of the time that the one member is being compressed toward the other member by the pressure of the pressurized steam, and temporarily releasing the pressure on the one member before the polymeric material has been cured to permit the gas that has been initially heated and thereby expanded in the polymeric mate

Abstract: A laminated thermosetting decorative sheet has on its surface glossy protruding parts and matted recessed parts, and the recessed parts are preferably colored. This laminated thermosetting decorative sheet is manufactured using a press plate with an enamel layer having protruding parts whose enamel surfaces are matted.

Abstract: A method is provided for manufacturing an electrode supporting base plate of a radiation detector wherein a plurality of high-voltage electrodes and signal detecting electrodes are alternately arranged at equal intervals and detection signals of incident radiation are obtained from the signal detecting electrodes. According to this method, a master of the base plate is processed at high precision from a material which allows easy processing and which has a small thermal expansion coefficient. A transfer mold is prepared by transferring a pattern of the master on an elastic molding material. A resin is injected in the transfer mold to manufacture an electrode supporting base plate.

Abstract: An element having a molding surface defining the cavity of a mold for molding thermoplastic resin and a method of making the element. To regulate the cooling speed of the molten resin to be injected or placed into the cavity, the molding surface is provided by a thin metal layer and a layer of heat insulating material is formed on the inner side of the metal layer.

Abstract: A method of producing an indicia transferring surface including affixing an inert material in the shape of indicia to a base sheet containing a curing inhibitor coating. A curable compound is placed on the surface of the base sheet in contact with the indicia shaped inert material and is allowed to cure. After a curing period, the curable compound is separated from the base sheet. The curable compound includes a cured portion and an uncured portion. The uncured portion is removed, leaving raised areas of the cured compound that were in contact with the indicia shaped inert material. The raised areas may then be used to transfer the impression of the indicia to another surface.

Abstract: Concrete building panels include a decorative embossed pattern on an outer surface. A plurality of concrete reinforcing ribs are disposed along an inner surface of the concrete building panels. Nailing strips are anchored into tips of the respective concrete reinforcing ribs. A method for making the building panels include a step of placing anchored nailing strips into tapered rib sections of a horizontal fiberglass mold is disclosed wherein reinforcing bars and mesh and moist concrete are placed into the mold and allowed to cure until the exposed upper surface of the moist concrete is plastically deformable. The horizontal mold is passed beneath a rotating embossing roller having a cylindrical embossing pattern thereon. The plastically deformable concrete contacts the embossing pattern, producing a complementary pattern on the concrete surface. The embossed concrete is cured in the mold to produce the building panel. The concrete building panel is then separated from the mold.

Abstract: A method for making an ornamental replica of a hand, including the steps of placing the hand to be reproduced onto a smooth surface, applying an elastic, impression-forming material over the hand and providing a support means for the impression-forming material to prevent any distortion thereof, allowing the impression-forming material time in which to form a mold over the hand and thereby create a negative impression of the hand therein, removing the hand from the impression-forming material and filling the negative impression therein with a fluid material capable of hardening to form a positive impression, and withdrawing the hardened positive impression of the hand from the elastic impression-forming material and applying an ornamental finish to the positive impression of the hand. The method provides a decorative replica of a hand, the replica having a planar bottom surface which particularly lends it to use as a paperweight, bookend or the like.

Abstract: An improved fishing lure is made by forming a first sample lure, without hooks and accessories, in the exact image of a desired bait fish. This first sample lure, however, will have a tail section or portion so thin that it would be vulnerable to damage when being handled out of the water as well as in the water when being taken by a larger fish. The dorsal and other fins would be, similarly, fragile--if they were to project in their normal swimming manner--when the exact image of the bait is formed. The tail portion of the sample lure is cut off far enough up on the body of the fish to find a substantially thick crossection, and any dorsal or other fins that would be too delicate to survive may be cut off too. A new tail portion is formed having the same profile as that of the original sample lure, and is attached to the body of a modified sample lure.

Abstract: A reflective sheeting is disclosed having spaced apart cavities extending along one face and light-reflecting beads lining both wall and bottom portions of the cavities to impart a wide angle retroreflective response to incident light and improved brightness or intensity. The sheet is prepared by forming in a deformable carrier sheet a network of relatively depressed cavities having wall and bottom portions and spaced apart by intervening ridges, and then coating the wall and bottom portions of the cavities and the ridges with light-reflecting beads. After filling the cavities and covering the ridges with a solidified layer of a resinous organic matrix having a greater adherence to the beads than the carrier sheet has, the sheet is stripped away. This transfers the beads to the organic matrix and locates them in similarly shaped cavities and ridges molded in the matrix by the carrier sheet.

Abstract: An inexpensive method and system for making chocolate candy having fine detailed designs. The method comprises creation of relatively inexpensive silicone molds and the use of these molds for making chocolate candy in detailed designs while allowing production of only small or moderate quantities at reasonable cost. The system includes a two-sectioned vat, a cooling tunnel and a belt for carrying the molds through the tunnel.

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: Two metallic half-moulds are produced from a prototype. The half-moulds have complementary mould faces which abut when the mould is closed, and moulding surfaces formed with annular rim depressions joined by a bridge cavity, each rim depression bordering a support surface for a false lens. A webbed frame front is moulded, false lenses are cut from that moulded front, and the mould faces which abut are set-back by a total amount corresponding to the shrinkage of the false lenses, so that the false lenses are gripped between the support surfaces and shape lens bezels in the rims when a frame front is moulded.

Abstract: A method is disclosed of molding a cementitious material within a mold having a filler material bed, the configuration of which is maintained by means of suction applied through a filter disposed within the mold frame. A shield layer can be formed upon a surface of the filler material bed having air permeability so as to impart a desirable shape thereto, and the filler material is fixed under reduced pressure conditions within the mold so as to form a molding mold, whereupon the cementitious material may be charged into the mold so as to set therein. It is also possible to achieve the method of the present invention by charging a cementitious material within a molding mold having a desirable configuration, forming a filler material bed having good air permeability with or without a shield layer disposed upon the cementitious material, and preparing a hardening mold, under reduced pressure conditions, beneath the filler material bed.

Abstract: A building form and method of preparing molded articles thereon which comprises molding an article on the casting surface of a building form comprising a casting surface adhered to a water destructible support layer, the said casting surface comprising a water permeable polymeric film, water destructing the said support layer, water penetrating the said casting surface, and removing the molded article.

Abstract: A letter press printing plate is disclosed for wrapping around a drum. The printing surface is formed with a light-sensitive material layer on a metal backing plate with two different levels, the high level representing areas of solid or dark tones of printing and the low level representing areas of light tones of printing. The printing plate overcomes the problem of even transfer of ink from the solid or dark tones of printing areas and the light tones of printing areas. A method of forming the letter press printing plate is also disclosed wherein a photo polymer layer on a backing plate is first exposed to a negative representing areas of solid or dark tones and light tones of printing. The photo polymer layer is then dissolved away to the backing plate in areas where no printing occurs and formed into a two-level printing surface with the areas of solid or dark tones being at a high level and the areas of light tones being at a low level.

Abstract: A lapping tool for grinding or polishing glass such as optical lens having exact curvature with the lens to be worked is manufactured by pouring a liquid resin into a mold having incompatability with the liquid resin at a portion corresponding to pellets to be adhered onto a blank dish body, and then hardening the resin in the mold, while the blank dish body is being press-contacted against the mold surface thus, molding the pellets onto the tool blank. The mold is shaped to a precise curvature of the lens to be worked by means of a master lapping tool equipped with lapping pellets.

Abstract: A method of manufacturing a heat exchanger comprises temporarily suporting a number of tubes in a first mould using a plurality of removable tube plates. The first mould is then filled with a molten, low melting alloy. After the alloy has set, the assembly is removed from the first mould and the tube plates are disintegrated by solvent or chemical action. The assembly of tubes supported by the set alloy is then inserted into a second mould and plastic material is injected into the mould to form a thin shell around the tubes and alloy and may also form header tanks of the heat exchanger. Finally, the whole assembly is removed from the second mould and the alloy is melted out to leave the completed heat exchanger. The method is also applicable to the manufacture of other hollow articles having a complex internal configuration.

Abstract: A process for artificially forming rocks is described. The process provides for forming a rubber film mold of the surface of a natural rock. The rubber film mold is then placed on a bed of flowable supporting elements which are distributed to support the underside of the cavity of the rubber film mold such that it assumes a desired contour or shape. A filling of concrete poured into the cavity of the mold upon hardening and being turned over provides an artificial rock whose surface has the characteristic markings of the natural rock but may have any desired different overall contour or shape.

Abstract: A mold for forming plastic foam parts in which an injection-molded plastic member forms a molding surface of the foam molding cavity against which foam plastic is adapted to be molded. The plastic member is preferably injection molded in a metal molding die from either polyethylene or polypropylene so that its molding surface is the reverse of the exterior surface of the plastic part to be foam molded therein. Vent passages and sealing beads may be integrally formed with the injection-molded member.