Abstract: A device and method for use in the art or craft of molding hollow artistic objects from thermoplastic molding material, such as wax. The molding device includes a frame with a vertical stationary, circular gear rack secured thereto. A crank driven shaft is journaled through the frame in a position concentric with the rack. A yoke-like mold carrier is secured to the end of the shaft for rotation therewith. A mold holder is, in turn, mounted on the mold carrier for rotation about an axis generally perpendicular to the crank shaft axis between the yoke arms of the mold carrier. The mold holder has a shaft projecting through one of the yoke arms of the mold carrier and is secured to and driven with a disc gear, which is enmeshed with the gear rack. As the crank is turned to rotate the mold carrier, the disc gear rides on the gear rack and rotates the mold holder.

Abstract: Electric resistance heating means is embedded in a forging tool so that the temperature thereof may be maintained at a desired forging temperature. Therefore the present invention makes it possible to forge light metal alloy workpieces such as aluminum workpieces which have been hitherto considered to be difficult to be forged by rotary forging machines. In addition, better quality of forgings as well as considerable improvement of productivity may be ensured. Thus, reduction of labor and material in a forging process can be attained.

Abstract: Apparatus for agglomerating powders and non-flowing fine particle minerals such as clay, silicas, and silicates involving means for establishing a minimum level of wetting agent content in the material to be agglomerated, a rotatably mounted motor driven drum for tumbling the material to be agglomerated over itself, spray nozzles located within the drum to add additional wetting liquid to the material within the drum, and conveying means for passing the material into the drum and discharge means for removing the agglomerated powder, which is now formed into pellets of an advantageous pellet size distribution, therefrom. The spray nozzles are situated to spray the wetting agent onto the material at the curl thereof. The establishing of a minimum level of wetting agent content in the powder, preferably in the range of 1-1/2% to 5%, is achieved either by incomplete drying of the material during wet processing or by the application of a wetting agent prior to introduction into the drum.

Abstract: A molding press is disclosed, comprising a device for gripping and delivering the elements to be molded, wherein movable means are provided in association with said press, such means performing the function of withdrawing the material to be molded as well as the molded product and positioning it respectively at withdrawal position, said means comprising arms carrying pliers or gripping means slidable on a guide to grip and position the material.

Abstract: An apparatus for manufacturing furniture by joining panels and making corners, in which at least two panels each having generally parallel generally planar major faces and a generally planar end surface bounding one edge of the major faces are arranged with mold instrumentalities to form a mold cavity bounded in part by the respective end surfaces of the two panels. Plastic material is deposited into the mold cavity and the two panels are bonded together into a corner configuration by the plastic material while the plastic material is confined and shaped into a predetermined configuration. The plastic material preferably is a structural foam material and the mold instrumentalities preferably define an inclined, heated mold cavity in which reactants may form the structural foam.

Abstract: The terminal portion of a winding end turn conductor which projects from the core member of a dynamoelectric machine is encapsulated in an epoxy potting compound by means of a casting assembly which comprises a detachable conformable pad, a plastic sleeve mold, and a portable vise. The conformable pad is fitted about the terminal portion of the conductor to provide a temporary barrier to axial flow of the epoxy compound during casting. The plastic sleeve is disposed around the terminal portion in a spaced relationship therewith and in an abutting relation with the pad to provide a barrier to the radial flow of the epoxy compound during casting. Clamping means such as a portable vise is fitted about the conformable pad and is tightened to establish a compressive union at the interface of the conformable pad and the terminal portion of the conductor to prevent leakage. A pair of spring members hold the sleeve in abutting engagement with the surface of the conformable pad during the casting process.

Abstract: A device for compressing a wax-type material comprising a piston disposed within a chamber wherein channels are provided along the lateral surface of the piston for venting gases during the compressing operation.

Abstract: A system and method for forming elongated and involute thermoplastic articles is disclosed. Means are provided for controllably heating a sheet of thermoplastic material to form preselected temperature gradients throughout the sheet of thermoplastic material. Means are further provided for planarly supporting the heated sheet of thermoplastic material allowing for transverse motion of the heated sheet of thermoplastic material at the center thereof and further allowing for controlled slippage of the heated sheet of thermoplastic material toward said center thereof relative to the planar support means. Means are also provided for transversely forming a heated sheet of thermoplastic material into the shape of an elongated or involute plastic article. A plug is used to extend the heated sheet of thermoplastic material into an elongated conical shaped piece.

Abstract: Continuously operable apparatus for the preparation and/or processing of synthetic plastics or rubber moulding compounds, comprising a housing in the form of a channel and a mixing and kneading member engaged in the channel and having a surface which co-operates with the bottom wall of the channel, in which said bottom wall and said surface of the mixing and kneading member are undulatingly profiled in a manner such that the profiles extend transversely or obliquely with respect to the longitudinal axis of said channel and said member, and drive means, including at least one crank drive, coupled between the housing and said member to cause said member and said housing, while retaining their respective orientations to move relatively to one another to cause the peaks of the undulations on one of said surface and said bottom wall to perform a circular movement in associated valleys in the other of said surface and said bottom wall.

Abstract: In manufacturing pressed boards, a flowable mixture of thermosetting resinous material and filler is blown through one or more nozzles into a converging throat formed by a pair of relatively inclined perforated conveyor bands in which the mixture is compacted into a continuous, coherent and self-supporting web by the application of heat to preset the resinous material thereof. The web is transversely cut into individually manipulable sections which are fed by a stack conveyor to a platen press, operating in step with the feeding and cutting mechanisms, for final setting of the resin.

Abstract: Cellulose ester fibrillar material is produced by forming a cellulose ester dope, pumping the dope to an extrusion orifice, extruding the dope through the orifice into a region of shear and high draw in a precipitation bath containing a non-solvent for said cellulose ester maintained at an elevated temperature. The fibrillar material is preferably subjected to further treatment to reduce the particle size and set the structure by expanding voids and expelling residual solvent. Paper having a high degree of opacity is produced by incorporating the cellulose ester material to obtain light weight paper.

Abstract: A rotary drum assembly includes separate agglomerating and hardening drums that are rotated independently of each other. The agglomerating drum has a generally cylindrical configuration with an inner cylindrical wall. A scraper is rotatably positioned within the agglomerating drum in spaced relation to the inner cylindrical wall with its axis spaced from the axis of the drum. The scraper has a tubular body portion with a plurality of parallel rows of blades extending radially therefrom. Each of the rows extends lengthwise along substantially the entire length of the scaper body portion and follow a helical path having a single turn about the axis of the tubular body portion. The rows of blades thus make a single convolution about the scraper body portion. Drive means are provided to synchronously rotate the agglomerating drum and scraper with the scraper arranged to rotate at a preselected and different speed relative to the speed of the drum.

Abstract: A press spar construction for a heated panel press producing chipboard panels and the like under elevated temperatures and pressures, the press spar structure having a thermal barrier arranged between each pressure plate and its supporting structure, the thermal barrier consisting of rows of insulating pressure blocks and spaced steel pressure blocks arranged between the insulating pressure blocks in the areas of maximum pressure concentration. The insulating pressure blocks are coated for imperviousness against humidity, and both types of blocks have metallic shrouds with anti-friction surface coatings. Shimming sheets are placed between the blocks and the shrouds, where necessary.

Abstract: An improved cutter for hot plastic strands is provided which uses an inwardly extruding frustoconical die and corresponding frustoncnical cutter rotating within the die. Severed particles are fluid cooled and cutter clearance is readily controlled even when a cutter has been reground for sharpening and the diameter reduced.

Abstract: Apparatus used in candle manufacture including means for dispensing and holding a length of wick material threaded through an upright needle, and means for clamping a candle mold in surrounding relation to the needle and wick material. After the candle hardens in the mold it is removed from the needle and the wick material remains in the candle.

Abstract: An apparatus is provided for molding composite articles by first rotationally molding a shell-like body with a reinforcing member or frame extending through the body and supported by the walls of a mold. The hollow shell is formed of a liquid or powdered resin or other suitable material disposed in the mold per se or containing reinforcing elements which become encapsulated within the molding material. A second molding material may be injected into the hollow shell to partly or completely fill the volume interior thereof. The second material may comprise a resin containing a blowing agent which causes the resin to expand and form a cellular mass filling the hollow body or forming a shell thereagainst as the mold is rotated. The filler material may be introduced through one or more of the reinforcing members disposed within or across the mold cavity.

Abstract: A device is disclosed for forming blanks from pulverulent porcelain mater which blanks have a foot piece and sloping sides. The device has an upper mould which acts against a lower mould, the upper face of which lower mould is formed by a distendable, elastic membrane closing the upper end of a liquid filled chamber. Within the chamber, a central member provides resilient support for the center of the membrane. The parts are so arranged that upon closing of the mould portions a layer of pulverulent porcelain composition is gradually shaped and compressed between the upper mould and the membrane into a concave article blank including a foot piece, and where necessary a relief design, which blank is of uniform thickness and density.

Abstract: In a calender the nip between a pair of rollers, of which one is obliquely adjustable, is bounded at the sides by plates adapted to the geometrical shape of the nip region and provided with slots, into which a control beam, parallel to the obliquely adjustable roller, engages, the ends of the beam are joined to the bearings of this roller, and the plates are arranged on supporting plates so as to be displaceble by means of a guide device, so that the plates, on oblique adjustment of the roller, are moved along a path which is concentric with the surface of the roller which is not obliquely adjustable.

Abstract: A guide arrangement for endless belts of a continuously operating press which belts are guided by a plurality of rolls arranged on a semi-circular track disposed at the inlet and/or outlet zone of the press and at the upper and/or lower press sections. The respective ends of each of the rolls are pivotally arranged in bearings with each of the bearings being associated with a disk-shaped member fashioned as a half ring. One or both of the disk-shaped members are movable in a controlled manner along a semi-circular track whereby the steel belt is secured against lateral movement.

Abstract: A rotatable carriage for supporting split-type plaster molds for molding ceramic hollowware is disclosed, in which the molds are retained between two frames rotatable to a succession of positions in which the molds are retained in place between the framework of one of said frames and a dual cell inflatable member on the inner face of the other of said frames. The first of said frames includes a retaining member engaging the outer surface of said mold to prevent said mold from slipping relative to said frames. A new casting method is disclosed in which the slip is poured from the filled molds in at least two steps with the rotatable frames being rotated to a different position for each of said pouring steps.