Abstract:
A method and apparatus for automatically decorating a surface of an article such as ceramic ware by direct unimpeded deposit thereon of a thick flowable composition material such as a glaze composition. An article surface is pressed into engagement with a mold face having openings therein defining a desired pattern for deposit of the composition material, the openings communicating with a manifold cavity which contains flowable composition material and is in communication with a supply source of such material. In initial position the article surface is above the mold face and manifold cavity and composition material held in the cavity. The article surface and mold face are then vertically reversed in position while retaining sealed contact to cause gravitational flow of the composition material to the openings in the mold face for direct flow of the composition material into contact with the article surface. After a predetermined time, the article and mold member are returned to their original position and excess composition material is removed from the article surface by flowing therefrom. The amount of composition material deposited on the article surface in the pattern defined by the mold face openings depends upon characteristics of the article surface and composition material. An apparatus for automatically performing the steps of pressure engagement of the article face and mold face, reversal of position of the two faces while in pressure engagement, and the return to initial position of the mold face and article face in preselected timed relation to provide desired application or deposition of glaze composition material in a desired pattern on the article surface.
Abstract:
A system of protecting pipes with bell and spigot joints (having metal parts) from corrosion by fitting between the spigot and bell at least one dry distortable band of open celled material (preferably reticulated polyurethane foam) having a particulate alkaline material (preferably Portland cement) impregnated therein and engaging the band between the bell and the spigot. On wetting of the band, the alkaline material is hydrated to form a water impervious hard sealant which protects the metal after ''''metal'''' insert by protracted release of alkali.
Abstract:
An apparatus for applying oilbased relatively viscons colorants one at a time to ceramic tableware by silk-screen printing each of the colorants in a relatively thick layer onto a quick-release transfer surface (preferably of silicone rubber), allowing at least 1 minute and up to 3 hours for the colorant layer to form a skinlike film and then causing intimate mechanical contact between the film and the tableware and thereafter withdrawing quickly the transfer surface from the film to transfer the colorant in its entirety intact to the ware. Successive films of colorant may be applied to the ware even over previously applied films of colorant and without waiting for previously-applied films of colorant to dry.
Abstract:
A method for applying oil-based, relatively viscous colorants one at a time to ceramic tableware by silk-screen printing each of the colorants in a relatively thick layer onto a total-release transfer surface (preferably of silicone rubber), allowing at least 1 minute and up to 3 hours for the colorant layer to form a skinlike film and then causing intimate mechanical contact between the film and the tableware and thereafter withdrawing quickly the transfer surface from the film to transfer the colorant film in its entirety intact to the ware. Successive films of colorant may be applied to the ware even over previously-applied films of colorant and without waiting for previously-applied films of colorant to dry.
Abstract:
A PROCESS HAS BEEN PROVIDED FOR POLYMERIZING A PARTICULAR TERMONOMER SYSTEM ONTO SURFACES OF SILICEOUS SUBSTNCES. BY VARYING THE COMPONENT PARTS OF THE TERMONOMER SYSTEM, MODIFIED SILICEOUS SUBSTANCES, SUCH AS CLAYS AND SILICAS, ARE OBTAINED WHICH MAY POSSESS DIVERSE PROPERTIES, ONE FROM THE OTHER. MOREOVER, MODIFIED SILICEOUS SUBSTANCES MAY BE OBTAINED WITH PROPERTIES WHICH MEET SPECIFIED REQUIREMENTS. PRODUCTS PREPARED BY THIS PROCESS ARE WITHIN THE SCOPE OF THE INVENTION AS ARE THE USES OF THESE SURFACE MODIFIED PRODUCTS FOR PURPOSES AS ADJUVANTS IN POLY(ESTER) AND OLEGINOUS COMPOSITION FORMULATIONS. THE PARTICULAR TERMONOMER SYSTEM CONSISTS OF A MAJOR MONOMER, M1; A MONOMER WHICH REGULATES THE POLARITY OF THE SYSTEM, M2; AND A MONOMER, M3, WHICH CROSS-LINKS AND THUS PREVENTS DISPLACEMENT OF THE POLYMERIZATE OF M1, M2 AND M3 FROM THE SURFACE OF THE SILICEOUS SUBSTANCE WHEN THE SILICEOUS SUBSTANCE IS INCORPORATED SUCH AS IN POLY(ESTER). AN EXAMPLE OF SUITABLE TERMONOMER SYSTEMS IS STYRENE, DIMETHYLAMINO ETHYL METHACRYLATE AND DIVINYLBENZENE IN A WEIGHT RATIO OF 98:2:0.1, RESPECTIVELY.
Abstract:
A line support for a post insulator includes a support bracket secured to the post insulator and carrying a saddle forming a channel extending in the direction of the line. A pair of opposed pins extend into the channel of the saddle from opposite sidewalls to hold a line clamp in place in the channel, and a retainer loop extends over the channel above the line clamp. The pins are formed to shear for releasing the clamp from the saddle channel under stress somewhat less than the strength of the insulator so that extraordinary tension on the line shears the pins to release the clamp rather than breaking the insulator.
Abstract:
A method for joining nonmetallic pipes underground, with the pipes having mating pairs of bells and spigots, by fitting between mating spigots and bells dry distortable bands of an open celled material (preferably reticulated polyurethane foam) having a particulate water reactive material (preferably portland cement) impregnated therein and engaging each of the bands between one of the bells and its mating spigot. On wetting of the bands with water, the water reactive material therefor forms a water impervious hard sealant.
Abstract:
In a prestressed concrete pressure pipe it is known to have the tensioned wire wrapping around a concrete pipe core terminate short of the bars outside joint-sealing surface at the end of the pipe core, embedded pretensioned wires extending axially of the core, and a tensioned ring either within or outside of the unwrapped or bare end of the core. In the present invention end portions of the pretensioned wires are bent outwardly at a hoop towards the unwrapped surface of the core and the hoop is pretensioned by the wires. The stress in the wires is thereby utilized to impart radially inwardly directed forces emanating from the bent-out portions of the wires and from the hoop to restrain flaring and cracking of the unwrapped end of the core.