Abstract: The invention relates to a method and apparatus for manufacturing bands of elastomeric or thermosetting material of the type used in making impervious seals and gaskets. The process consists in molding or injecting at ambient temperature the elastomeric or thermosetting material in the viscous state into a molding cavity on a support which, compared to the material being deposited, has an adherence that is greater than that of the molding cavity. Subsequently, the deposited material is vulcanized or polymerized into the desired band configuration.

Abstract: A concrete placing apparatus comprises a power-operated carriage and mounted thereon a feed hopper, a first and a second endless belts adapted for moulding lateral sides of a concrete layer being formed, and mounted parallel to one another on rolls having a vertical axis of rotation, and a concrete compacting mechanism. The latter is constructed in the form of a third and a second endless belts disposed in one horizontal plane above the first and second endless belts. The third endless belt is intended for exertion vibration action upon the concrete mix being placed, and is mounted on two rolls having a horizontal axis of rotation, at least one of said rolls being provided with unbalances mounted therein on its driving shaft coaxial therewith. The fourth belt is intended for damping vibration of a freshly placed concrete and mounted on rolls having a horizontal axis of rotation behind the third endless belt.

Abstract: A holding device for surface sheets or surface plates in a press intended, for example for pressing wood fiber products, include a press plate, a vacuum source for supplying vacuum to the side of a surface sheet or surface plate which faces toward the press plate, a vacuum distributing body placed between the press plate and the surface sheet, and a seal which is arranged to provide sealing between the present plate and the surface sheet. A substantially air-impervious sheet is disposed between the press plate and the surface sheet to form two essentially closed spaces coupled in air communication with the vacuum. This arrangement permits independent removal of the surface sheets from the press plates.

Abstract: Polymer membranes are formed by spinning a monomer solution on a smooth surface of a plate and heat curing the solution to form a polymer film. A carrier element is attached to the film and together they are immersed in a suitable chemical composition to react with the bond between the film and plate. The assembly is then immersed in water to cause the plate to fall away from the film.

Abstract: An improved method for the manufacture of simulated marble and onyx products is disclosed. The process comprises the steps of applying a substantially clear coating to a mold, applying a first layer of a mixture of polyester resin and filler over the coating, forming readily visible striations in the first layer of resin and filler, applying a layer of glass fibers thereover, applying a second layer of polyester resin and filler over the layer of glass fibers and permitting the various layers to completely cure so as to form the final product.

Abstract: A novel method for embedding a button into a dental cast by forming a cavity and pouring a cold setting material such as a plastic into which a screw is inserted while the poured button is in the fluid form before final setting. The screw has a notch in at least one thread so that the molding material forms an interlock or detent in the notch, which is sheared upon removal of the screw.

Abstract: A generally cylindrical core for winding a web of sheetlike material has portions with a lesser diameter than other portions such that otherwise baggy areas of the web overlie the lesser diameter area of the core. The core particularly solves the problem of elongated edges on a wound film of heat shrinkable thermoplastic material caused by differential shrinkage about a core.

Abstract: A method is disclosed for producing a longitudinally extending curved finger binding made of plastic material. The fingers are arched transversely to their longitudinal axis to provide an arched contour with a resulting increase in stiffness. A blank from which the binding is formed is heated to a temperature sufficient to soften the plastic blank. Fingers of the blank are curled and a backbone portion of the blank is curved into a closed circular plastic binding formation by use of a guide form. The guide form simultaneously curves each of the fingers transverse to their longitudinal axis.

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: A method for continuous production of corrugated sheets of fiber-reinforced thermosetting resins, wherein a web of pre-impregnated material is corrugated by moving the web on elongated carrier elements arranged at intervals side by side. These elements are advanced along an essentially horizontal path in the corrugating zone and a subsequent heating and curing zone, and by causing the web to hang down to a desired extent between adjacent carrier elements. The carrier elements may be arranged transversely or longitudinally to the advancing direction of the web in order to obtain transverse or longitudinal corrugations. The upper surface of the web may be provided with a layer of surface protecting and decorating, crushed stone material before or after the corrugation operation.

Abstract: A process for the manufacture of patterned urea thermoplastic molding compound preforms is disclosed where such preforms are suitable for the compressive thermocasting of buttons containing cast holes and displaying an undistorted and consistent pattern. The process utilizes commercially produced molding compound, pigment, adhesives, crystalligerous material plus water which are united to form pliable, self-adhesive aggregates of various colors or hues. These masses are volumetrically measured and/or formed and then assembled in various specific arrangements. This mass is then contained and compressed to expel excess air and cause adhesion of the constituents. The mass is then extruded to a consistently patterned soft rod of a specific diameter. The rod is subsequently sliced to a specific thickness and weight and then dried prior to shipment.

Abstract: A process for making a panel having a supported member formed either of a simple or multiple glass window and a supporting part formed of preformed parts received on and at spaced locations around the glass window for supporting a light frame thereby to accommodate the panel for use as a window or door.

Abstract: A method for producing in a single casting operation a dental model including a unitary tooth die which incorporates an integral mounting pin. The pin and die form a part of, and are removable from the dental model. Prior to casting the die, a bayonet shaped mounting pin is held in position by a permanent divider which, in turn, is supported in a negative impression of a denture. The die and base are then cast simultaneously, eliminating the need for the more commonly used double casting procedure.

Abstract: A sanitary napkin is provided containing a perfume composition and means for inhibiting migration of components of the perfume composition. Means comprise providing within the napkin at least one elongated narrow strip element. The strip element carries the perfume composition and extends generally longitudinally within the napkin. Preferably, the strip element is a cellulosic string.

Abstract: Apparatus for pelletizing liquid and viscous products. A body of the liquid or viscous material is enclosed within a chamber having discharge orifices or nozzles at the bottom of the body of liquid. There is a body of gas above the liquid which is subjected alternately to increased and decreased gas pressures so that the pressure on the body of liquid is first above and then below atmospheric pressure. That causes the product to be discharged from the orifices in droplets. The droplets are then solidified to form pellets. A predetermined liquid level is maintained within the chamber. The changes in gas pressure are produced by operating a valve which connects the body of gas in the chamber alternately to a suction line and supply line for gas under pressure.

Abstract: This invention relates to a method for making concrete conduit. The method of this invention pertains to forming a conduit mat of material on a form, advancing the formed conduit mat of material from the form, fastening the conduit mat together, cutting the conduit into desired lengths, applying concrete on the conduit mat, working the concrete from both the inside and outside of the conduit mat to form smooth surfaces on both surfaces of the concreted conduit mat and curing the concreted conduit mat to form concrete conduit. In one embodiment of this invention, the method is performed from a mobile base which moves forward as the concrete conduit is continuously made and layed on the ground or underwater.

Abstract: A method for making a punch and stripper assembly for a reciprocating metal-punching press in which the stripper is integrally molded about the punch while in the punch holder through the use of a certain plastics material mold cooperating with the punch holder, and a substantially liquid plastics material that can be poured in the mold and will set to a solid condition integral with the punch.

Abstract: A method and apparatus for molding single stems and buds of greenery in flat form projecting from an elongated strip in one continuous piece, softening and curving the flat piece of spaced stems and buds, and then compressing such piece so that the previous flat sections are curved and repositioned to create conically-shaped interfering buds. The method is carried out by the apparatus disclosed and claimed.

Abstract: A method of making a wall of a container which wall is to be ruptured to gain access to the interior of the container, the method comprising forming a weakening in the wall corresponding to the path along which the wall is to be ruptured, locating the wall between mould tools which are formed as to one of them with a bead recess which will overlie the weakening and as to the other with a rupture recess in register with the bead recess, injecting material into the bead recess to displace the wall regions adjacent the path into the rupture recess to further weaken the connection between the wall parts to either side of the said path, and to form a seal therebetween and removing the wall from the tools.

Abstract: The wrapped insulation of coils of large electric machines--motors or generators--is set by heat and pressure in a press that extends the length of both wrapped legs of the coil and supports the coil so that it is substantially free from stress. The coil may be supported with its wrapped legs level and horizontal, and the press can be adjustable for different coil sizes and configurations. The heat and pressure cycle is operable automatically to suit the requirements of the insulating material.