Abstract: A mould for casting a component onto a body comprising first and second mould parts arranged to be disposed on respective ones of the opposite sides of the body. At least one of the parts defines at least a portion of a mould cavity that is in communication with the body to allow for casting of the component on to the body. The mould has particular application to direct casting of polymeric couplings on to pipe ends.

Abstract: There is disclosed a method of forming a fabric 1 on the surface of a mandrel 10, infiltrating the formed fabric with matrix, and leaving portions 12a, 12b of the mandrel as integral with the fabric and removing the mandrel before the fabric adheres to the mandrel by matrix infiltration. Subsequently, a remaining portion of the mandrel is used as a reference surface and machining is performed. Without possibility of adhesion to the mandrel and resulting breakage, machining bases (axial center and reference surface) during machining can accurately be provided, and this can largely enhance machining precision and yield of a final product.

Abstract: A balustrade product including an elongated molded housing formed of a synthetic material is disclosed. An insert member is embedded within the molded housing to form a plurality of holes extending longitudinally through the molded housing. The insert member includes supports having openings and pipes extended through the openings. The supports each have a circumferentially spaced plurality of tabs that are sized to extend to an outer portion of the molded housing. The pipes are positioned in parallel relation to one another and in parallel relation to a longitudinal axis of the balustrade product. Each of the holes is configured to receive connecting pins for releasable connection with the support structure. The balustrade product is formed by centrifuge molding process with the insert member placed within the mold halves allowing the tabs to engage the mold halves to position and hold the insert member in place.

Abstract: In a method of forming vibration isolating rubber bushes, a metal part attaching jig is first prepared. The metal part attaching jig includes: a guide member having a plurality of guide holes which droppingly guide a plurality of metal parts to a plurality of metal part receiving recesses of a lower mold half, respectively; and a guide hole opening and closing member which can open the guide holes by one action in a state where the metal parts inserted into the guide holes are received. The metal parts are inserted into the guide holes, respectively, after the guide hole opening and closing member is switched to a closing side. The guide hole opening and closing member is then switched to an opening side to cause the metal parts to be dropped and accommodated into the metal part receiving recesses.

Abstract: The present invention provides a molding tool capable of forming a molding with a cylindrical core while ensuring the discharge of the air in the vicinity of an upper end portion and forming no end face burr. As the device for this molding tool, an upper mold 10 and a lower mold 20, as can be clamped, are provided with insert dies 12 and 22 having fitting hole portions 14 and 24 at their centers. The lower fitting hole portion 24 is provided with a support pin 25 to be fitted in the cylindrical core 1 thereby to retain the cylindrical core 1, and the upper fitting hole portion 14 is provided with a core holder 15 so that a cavity 30 is formed around the outer circumference of the cylindrical core 1 when in the clamped state, to charge the cavity with a molding material to be shaped. A seal ring 16 is mounted in the fitting hole portion 14 of the upper insert die 12 to fit the outer circumference of the upper end portion of the cylindrical core 1 while holding a slight air ventilation.

Abstract: A die mold for the production of a fitting to be surrounded by a single-piece ring includes mold components separable along a plane extending parallel to the longitudinal axis of a fitting to be produced, the mold components having therein a recess into which is inserted the ring. A closure member closes the recess during molding and forms a wall of the die mold. The closure member is divided peripherally into plural portions each of which is of unitary and single-piece construction in a direction parallel to the longitudinal axis and which extends in such direction beyond at least one axial end of the recess.

Abstract: A method of manufacturing a composite seal assembly. A primary sealing ring in generally frustoconical form is cut from a cylindrical billet of a resinous fluorocarbon material so as to have first and second principal surfaces each inclined with respect to the axis of the billet. The ring thus formed is supported against movement by disposing a relatively rigid annular casing unit adjacent the ring, with the ring lying within the casing opening, and bonding the casing element to the seal ring by molding an elastomeric collar of thin cross-section between a portion of the second surface of the ring and a part of said casing.

Abstract: A method and apparatus for loading an array of articles into a front loading molding press. Two pairs of rails and two carriages are utilized to facilitate the various loading movements. The first or lower pair of rails is fixed and slidably mounts the first or lower carriage. The second or upper pair of rails is defined on the lower carriage and slidably mounts the upper carriage. A loading board is carried on the upper carriage and is mounted for up and down movement relative to the upper carriage. A predetermined array of loading heads are positioned on the underside of the loading board and a predetermined array of article holders are positioned between the forward portions of the lower pair of rails.

Abstract: An apparatus and method for loading a front loading molding press in which a loading board is pivoted at one edge on a horizontal pivot shaft which extends into a lower corner of the press opening adjacent one side of the mold in the press. Loading of the press is performed by loading the board with a predetermined array of articles to be molded while the board is in an upwardly pivoted oblique preloading position to one side of the press opening; thereafter pivoting the loaded board downwardly to a loading position directly in front of the press; thereafter sliding the board on the pivot shaft into the press opening to an unloading position directly overlying the mold; and thereafter discharging the articles downwardly onto the mold.

Abstract: A dual-lip shaft seal with two PTFE sealing members bonded to a molded elastomeric body, and a method and mold for its manufacture includes an elastomeric body bonded to the radial flange of a metal case and provides (1) a shaped lip with a garter spring held in a recess and, bonded to its other side, a frustoconical PTFE ring providing its sealing lip portion and (2) an inflexible portion bonded to a radially extending PTFE wafer.

Abstract: A molding method and apparatus in which an insert part is supported in a mold cavity by a pin. The pin is withdrawn when the resin pressure in the mold exceeds a predetermined value.

Abstract: A method for producing an annular composite washer subassembly for use as a `soft` mount for the abrasive disc subassembly of a portable grinder includes first and second relatively movable mold portions with each mold portion having a pair of spring-biased pins therein. A first flat annular washer having a pair of holes is placed over the pins in the first mold portion and a second annular flat washer having a pair of holes is placed over the pins in the second mold portion. The pins of the first mold portion extend through the holes of the first washer to engage the second washer, and, conversely, the pins of the second mold portion extend through the holes of the second washer to engage the first washer. The first and second washers are positionally maintained in their respective mold portions by the pins of the opposite mold portion while a plasticized plastic material is injected into the mold and allowed to solidify between the so-positioned washers to form the composite washer assembly.

Abstract: Moulding tool for making an article from vibrated concrete optimized as regards strength, the article having embedded therein a tubular sleeve located by a pin during the moulding process. The moulding tool is designed to keep the interior of the sleeve free from concrete and to decrease wear and mechanical stress exerted on the pin during the moulding process. Such a moulding tool is characterized in that, during the moulding process, the pin extends through a sealing and dampening body made from an elastic or semi-hard material, the sealing and dampening body having sealing engagement with the pin. The sealing and dampening body is compressed by the sleeve so that a sealing engagement is achieved between one end of the sleeve and the sealing and dampening body and between the other end of the sleeve and a surface of the moulding tool.

Abstract: Apparatus for making a composite container comprising a blank and an injection moulding thereon, the apparatus comprises a pair of tools relatively movable between open and closed conditions in the latter of which they define a mould cavity for receiving a blank and injected mouldable material, and a pair of guides for holding a blank between the tools in their open condition, the blank being positioned to be engaged by one tool in its movement to the closed tool condition between the guides, the guides being insufficiently spaced apart to allow said movement of the one tool in their guiding condition, wherein each guide in the region of movement of the one tool therebetween includes a member movable between an operative guiding position and an inoperative position permitting said movement of the one tool by relative movement of the one tool and the guides.