Abstract: Apparatus for hot shaping vehicle floor carpets has a plurality of presses mounted on a slow-moving turntable which carries operators and which can have a central rotary distributor for distributing pressure fluid from a stationary source to actuators on the presses.

Abstract: A device for preparing granular sulphur particles from a stream of molten sulphur is disclosed. The device comprises an elongated conduit for moving the molten sulphur which has a uniquely designed spray head coupled at one end thereof. The spray head has a nozzle opening to discharge the sulphur. A helical member is disposed inside of the spray head adjacent the nozzle opening such that when the sulphur exits out of the spray head, it forms a deluge-type spray. A water jacket is circumferentially disposed about the sulphur conduit adjacent the spray head so as to form an annular orifice thereabout. The annular orifice is located behind the nozzle opening such that as the molten sulphur exits out of the spray head, it comes in direct contact with an annular water spray. Impingement of the water on the molten sulphur causes the sulphur to form into irregular granular pellets which are very porous.

Abstract: A mold for forming O-ring seals free of flash at their inside and outside diameters. The mold includes a first mold section having a frustrum extending from a surface thereof and a second mold section having a cavity for receiving said frustrum, said frustrum and recess having annular grooves juxtaposed to define a mold cavity for an O-ring seal. Mating surfaces of the frustrum and recess act to seal one side of the cavity while spaced surfaces on the opposite side of the cavity define an annular orifice extending into said mold cavity. The mold further includes a loading chamber and means for injecting a seal composition through said orifice into said mold cavity for curing.

Abstract: An apparatus and method for providing a stream of molten metal from a metallic ingot wherein a quantity of the molten metal from the melted ingot is maintained at an established level within the chamber of the apparatus. It is further heated to an established temperature to then facilitate passage of the molten material through the apparatus's orifice.

Abstract: An improved continuous press of the type having two rotatively driven endless conveyor belts forming opposed, substantially linear spans defining a press zone with support structures applying pressure through the travelling belts to work carried therebetween, in which a plurality of sets of individual roller chains closely following each other in longitudinal direction are disposed between the support structures and the conveyor belts.

Abstract: In a pressure moulding machine, particularly a die casting machine, detection of locking together of the die parts by the applied pressure is effected by detecting the resulting mechanical stretch in the machine frame; the die parts are opened and closed together by an air motor associated with a hydraulic motor that damps the opening and closing movement of the dies, the die parts being locked together by the hydraulic motor; full closing of the die parts is determined by applying pressurized air to bores therein and to a controlling pressure switch, the pressure switch not being operable if air is leaking from the bores.

Abstract: A plurality of cables to be prestressed and made a part of the final concrete slab, each have their ends secured within a plate with the overall arrangement of wires or cables being of a geometry substantially that of the desired final structural unit. A pair of lever bars pivotally related at their ends are connected to the plates such that when pivoted into straight line relation, the plate securing the ends of the cables are separated from one another, placing the wires in tension. The entire set of stressed cables and lever bars is lifted as a unit and placed onto a horizontal surface having upstanding means received through openings in the plates. Adjustment screws secure the plates to the upstanding means on the horizontal surface, after which the lever bars are removed. Concrete is poured over the tension cables, forming the structural slab, after which on setting up, the end plates are removed from the wires, leaving the prestressed concrete slab with implanted tension wires.

Abstract: A multiple-roll calender for producing thermoplastics films, in which, viewed in the direction of working, a penultimate roll is spaced from the roll which immediately precedes it so that for a period as it travels from said preceding roll to the penultimate roll the material being calendered is not in contact with any of the rolls, and said penultimate roll and a final roll which together define a final working gap, are provided with drive means whereby they can be driven at varying speeds independently of the other rolls.A guide roller may be provided to guide the material centrally into the final working gap or a pull-off roller or pair of pull-off rollers and a constant pressure roller may be provided to guide the material to the final working gap. Alternatively a pull-off roller and a scraper device, defining with the penultimate roll a gap which narrows in a downstream direction may be provided.

Abstract: A vertical underwater type pelletizer-cutter apparatus utilizing a hydraulic suction force for pelletization of thermoplastic polymers comprising a nozzle portion having a plurality of nozzles through which a thermoplastic polymer in a melt state is extruded in strands, an injector portion having a plurality of injectors through which the strands are introduced with water, a cooling portion comprising a plurality of guide tubes through which the strands pass together with said water which cools and solidifies the same and a cutter portion which cuts the cooled and solidified strands into pellets, wherein means are provided for monitoring the pressure at the space in the upper part of the guide tube and for automatically stopping the extrusion of the thermoplastic polymer when the monitoring means detects an abnormal reduction in the pressure.

Abstract: Apparatus for molding of filament-reinforced plastic rods, such apparatus having an improved shaping device for expressing air from a longitudinally advancing, elongated mass, comprised of a bundle of filaments embedded within an unset plastic material, and for imparting a desired round cross-section to such mass during the continuous travel thereof.

Abstract: Method and various embodiments of apparatus for producing granulates from pulverulent, granular, doughy or similar material. Material to be granulated is continuously fed into the apparatus and formed into a skin of the material in the nip space between two adjacent and cooperating rotating curved surfaces. The skin and material progresses axially of the rotating surfaces and is periodically and repeatedly kneaded as it is conveyed by the rotating surfaces towards and forced through outlet apertures whereupon it is divided up into granulates. The apparatus can be in various embodiments which use paired, skinforming rotating curved surfaces and can be the surfaces of rollers or of at least one roller cooperating with the internal surface of a drum. The rolling surfaces can be cylindrical or combinations which include one or more cylindrical, tapered or axial contoured surfaces. Single or opposed helical lands or grooves can be incorporated in one or both of the paired rotating surfaces.

Abstract: Method and apparatus for producing glass fibre reinforced plastic pipes and the like wherein a rotatable hollow mould form is provided, an elongated roll of reinforcing fibres is located on holding means which are placed in the concavity of the mould, spaced from the sides of the mould, the mould is rotated and the fibre roll is unrolled onto the mould face to deposit fibres thereon and settable synthetic resinous material is introduced into the mould form. The holding means may be adapted to move the roll of reinforcing fibres from a position wherein it is spaced from the mould surface to a position wherein it is in contact therewith and the holding means may be rotatable with the leading edge of the roll secured until the roll has attained a suitable speed.

Abstract: In the manufacture of metal and alloy powders in the form of small diameter spheres whose shape and diameter must be maintained within narrow limits, a substantially cylindrical solid electrode of the material from which the powder is to be made is rotated at high speed about its longitudinal axis and one end of the electrode is heated to fusion point, the molten material being sprayed therefrom under centrifugal forces in the form of small diameter spheres, wherein fusion of the one end of the electrode is obtained by means which produce a local fusion zone on the end surface of the electrode and means for causing the local fusion zone to move along a spiral path on the end surface of the electrode as the electrode rotates.

Abstract: An apparatus located alongside a multiplaten vulcanizing press in combination with a clamping device for stretching or tensioning elastomeric belt prior to closing the press, and maintaining the belt in alignment with the press platens while the press is closing to assure a uniform tensioning of the belt.

Abstract: Iris leaves for optical components such as diaphragms or shutters are injection-molded, together with integral pivot pins, of thermoplastic resin which is given a mat appearance by a roughening of the mold-cavity surfaces. In the case of a composite leaf consisting of two legs articulated to each other, each leg is a curved foil whose cross-section tapers from its convex to its concave edge to facilitate relative swinging of the legs. The mold cavities are duplicated in confronting surfaces of coacting mold halves and open into deeper sprue channels whose junctions with the cavities are formed by converging slots in shearing bolts that are guided in transverse bores encroaching upon the convex cavity edges, a displacement of these shearing bolts by a distance greater than the foil thickness severing the molded leaves from the runners before the mold is opened.

Abstract: Process and apparatus for forming essentially spherical solid pellets directly from a melt, and particularly solid metal pellets such as iron and lead. The melt from a column of a preset height is directed through one or more orifices in a way to form a jet which experiences an upwardly directed trajectory path and which under the influence of vibratory action breaks up to form pellets of a predetermined diameter. Adjustments of the column height and/or vibration frequency are used to control pellet diameter. The pellets may be formed and solidified in a controlled atmosphere; and in the case of iron pellets, the carbon content of the pellets may be adjusted, to attain a desired degree of hardness, either before or after pellet formation. Iron pellets thus formed are particularly suitable as substitutes for lead pellets in ammunition.

Abstract: The invention disclosed sets forth a machine for forming a sleeve of a shrinkable, cellular polymeric material from a predecorated web. The web is processed to provide (1) a partial-depth slit along the longitudinal dimension, and (2) cross-dimension pleats. Predecorated shrunken neck labels are formed from the web for overlying the neck and closure of the bottle and including a pilfer-proof feature. Such a label is formed from the processed web by cutting a blank having the cross pleats therein and winding the blank on a mandrel to overlap the ends and seam the overlap to make a sleeve. The sleeve is stripped onto the top neck end and over the closure of a bottle at room temperature to a label position and shrunken to a snug fit, the pleats absorbing wrinkles that occur in shrinking the material onto a "cold" bottle.The disclosure includes a novel machine for making the sleeve from a plastic web and placing it on the bottle.

Abstract: A chipboard structure is disclosed which is made substantially of 100% sawdust waste material. The chipboard has a core portion which contains the coarsest particles of the sawdust, the surface portions of the chipboard containing the finest fraction of the sawdust, intervening portions of the chipboard containing fractions which increase in size from the surface to the core portion of the chipboard. The method and apparatus involve the use of sawdust having a width and/or thickness no greater than 4.75 mm, the fractions of the sawdust having a particle size greater than 0.1 mm being sliced to increase the quantity of the fractions below 0.1 mm. Because the small particles are randomly disposed in the chipboard in directions not only parallel to the plane but also perpendicular and at an angle thereto, characteristics are obtained which are as good as chipboard produced from conventional materials other than sawdust.

Abstract: An automated molding apparatus has a continuous movable belt trained about a pair of spaced apart sprocket pulleys rotatably mounted to a main support frame. A plurality of female dies are equidistantly mounted to the belt for mating with a plurality of male dies reciprocatively mounted in a plane above the female dies. A heated feeder is provided for introducing a predetermined amount of melted mix into the female dies prior to mating with the male dies. To insure that the resulting molded product is properly hardened, the female dies are adapted with internal channels connected to a liquid cooling system. The molding apparatus is readily adaptable for hydraulic operation and may be readily automated by an electrically actuated control and timing system.

Abstract: A hot plastic injection bushing for delivering molten plastic molding material from an injection molding machine to a cavity mold in which the bushing comprises a smooth bore tubular member, the bore of which is adapted to pass the molten plastic from the molding machine to one or more parts of the mold. The tubular member is heated by means of a heat pipe surrounding the tubular member. The heat pipe comprises an evacuated chamber partially filled with a vaporizable liquid and is heated by means of an external electrical heater automatically controlled to maintain the temperature of the heat pipe at a desired value. The heat pipe is provided with internal wicking along a localized portion and the heater is located adjacent the wicking. The heat pipe operates to maintain all parts of the tubular bore at the same temperature and the bushing maintains the plastic material in the bore in its molten state between successive molding injections except for a small plug in an output area.