Abstract: Pultrusion apparatus and tongue-in-groove die is provided for the fabrication of thermoplastic tape containing long fiber reinforcement. The tongue-in-groove die includes a first mold half having a groove and a pair of protruding wall portions which form sidewalls for the groove, and a second mold half having a tongue to match the groove. The second mold half is juxtaposed with respect to the first mold half so as to define a wedge-shaped passage between the tongue and the groove which has an inlet and an outlet and which converges from the inlet to the outlet. The tongue-in-groove die further includes a mechanism for adjusting the inlet and outlet clearances between the tongue and groove at the inlet and outlet respectively.

Abstract: The improved check valve assembly includes a cylindrical barrel, a rotating and reciprocating plasticizing feed screw in said barrel, a screw tip or head portion downstream of the feed screw and connected thereto with the feed screw feeding heated thermoplastic material to the screw tip which in turn feeds the material externally of the screw tip, a check valve assembly between the feed screw and the screw tip including a sliding ring inside the barrel, a first sealing surface of the ring sealable against the feed screw operative to block communication between the feed screw and screw tip, and means operative to seal the ring against the feed screw upon rotation of the feed screw.

Abstract: An extrusion-type liquid application device having a simple construction but in which the width of the coating slit can easily be adjusted, even during a coating operation. Thick members are mounted on the doctor portion of a coating head extending perpendicular to the liquid discharge portion of the coating head. The thick members have acting portions at their upper ends abutting the surface of the doctor portions, central fulcrum portions, and opposite end portions provided with adjusting members. By adjusting the adjusting members, the slit width can be adjusted.

Abstract: A saturator of the type comprising a chamber situated between a chamber defining element and a mandrel, in which a web is moved between the chamber defining element and the mandrel to impregnate the web with a saturant contained in the chamber includes at least one saturant delivery port which extends across substantially the entire width of the chamber or the entire width of one of the saturating zones if the chamber defines a plurality of saturating zones. In this way, uniformity of saturation across the chamber is improved. An insert is removably mounted to the chamber defining element such that a surface of the insert defines a wall of the chamber.

Abstract: Apparatus for resin sealing semiconductor devices is disclosed, wherein semiconductor devices such as semiconductor chips are placed in cavities provided in a pair of chase blocks, which are clamped by a press machine through support members capable of elastic compressive deformation. Plastic is then injected into the cavities of the chase blocks such as to resin seal the semiconductor devices.Also disclosed is a device for resin sealing semiconductor devices, which device comprises: a pair of chase blocks equipped with cavities for holding semiconductor devices, a press machine for pressing the chase blocks against each other through a pair of press surfaces, a plurality of support members adapted to hold the chase blocks over the respective press surfaces of the press machine and to undergo elastic compressive deformation during the press operation of the press machine, and a plastic injector for injecting plastic into the cavities provided in the chase blocks.

Abstract: An improved carrier assembly for the dip coating of latex or rubber-like articles comprises a pair of horizontal members and a vertical member that connect a carriage arm to a form frame. The first horizontal member is attached at one end to the carriage arm and is attached at the second end, which is split to form a clevis into which the first end of the second horizontal member is affixed rotatably. The rotation of the second horizontal member is limited by a pair of adjustment screws. The straight vertical member, having a cam engagement bushing disposed removably thereon, is non-rotatably attached to the second horizontal member at its first end and integrally attached to the form frame at its second end.

Abstract: A bread moulder has a feed chute for receiving dough pieces and directing them between counter-rotating sheeting rollers for flattening the dough and delivering it to apparatus for working it between convergent runs of driven endless upper and lower belts. A shutter is hinged in the feed chute and is biased to closed position but is yieldable under impact of a dough pieces thrown onto it to allow the dough piece to pass through the feed chute. A safety gate in the form of a double grille, V-shaped in end view, is hinged to the feed chute and is movable by a handle to cause its leading part to move the shutter into the chute to dislodge any dough lodged therein, its trailing part forming a barrier before the sheeting rollers.

Abstract: A bread moulder has a feed chute for receiving dough pieces and directing them between counter-rotating sheeting rollers for flattening the dough and directing them between convergent runs of driven endless upper and lower belts. At the sides of the feed chute are feed tubes aligned to receive elongated fingers of dough endwise and to direct them gravitationally between the sheeting rollers to be delivered to and wound spirally by the upper and lower belts for the production of shell rolls.

Abstract: A resin-molded semiconductor is produced by using an apparatus which comprises a mold having a plurailty of pots from which a molding resin is fed under pressure, mutually independent runners extending from each pot, and a plurality of cavities serially disposed at the end of each runner, said cavities being filled with a molding resin fed under pressure from said pots, with a part to be molded placed in each cavity. The process and apparatus of this invention prevent the molding defects resulting from the excessive flow resistance of resin and greatly improves the use efficiency of resin.

Abstract: An automatic continuously cycleable molding system wherein a plurality of mold sets are transported in predetermined timed cycles through a series of work stations wherein the various molding, curing and workpiece handling operations are accomplished, and wherein the mold sets are recirculatingly moved through the system for repeated usage.

Abstract: A mold for making annular polymeric articles comprising a core having an outer contoured surface for placing a workpiece thereon, two half-molds with holes for discharging excess polymer embracing the contoured surface of the core and partially embracing end faces of the core in the course of radial displacement of the half-molds during press-forming of the article, and a means for pressure-sealing a forming cavity of the mold. The half-molds have in the area where they are joined a width equal to the length of the generating line of the core, whereas the pressure-sealing means includes two members rigidly affixed on one of the half-molds at the opposite sides thereof. Each member has at the side facing the half-molds the form of a closure embracing these half-molds in the area where they are joined, and by their shelves embracing part of the end faces of the half-molds and core during press-forming.

Abstract: A driver and an idler roller in contact with one another are used to drive a pair of tapes carrying components through solder wave tinning apparatus immediately prior to winding the tapes and components for storage. The rollers are made of conductive material to remove electrostatic charges from the tapes and components induced by their movement through the apparatus to prevent damaging electrostatic sensitive components.

Abstract: The known center mechanism in a tire vulcanizing machine is improved in that the center mechanism comprises condensate ejection means which can be accommodated within a member disposed in the center mechanism and which can be moved between the member and a condensate stagnating portion, a sleeve movable vertically within an upper ring by an operation of a pneumatic cylinder and adapted to be engaged with a part of the upper ring at its end portion to restrain a raised position of the upper ring, whose fixed height with respect to a rod of the pneumatic cylinder is variable, and a rotary member for restraining the position of the lower ring, whose engagement length with a receiving plate for the lower ring can be varied by continuous rotation thereof, and which can be fitted to and disengaged from a support member therefor through rotation by a predetermined amount.

Abstract: An improved window gasket assembly and the apparatus and associated method for reaction injection molding such assemblies, as well as other molded articles, are disclosed. The gasket is preferably integrally molded from an elastomeric material such as urethane onto a substantially transparent window panel. The gasket and window assembly can then be mounted and secured directly to a vehicle body panel opening, for example, with adhesives, thereby eliminating the need for discrete mechanical fasteners. In a preferred embodiment of the invention, an improved aftermixer and gating apparatus includes a mixing body in which a flowable multi-constituent molding material is separated into a number of generally serpentine mixing passageways and reunited in a common mixing cavity before being conveyed through a fan-gate passageway to the mold cavity.

Abstract: The present invention concerns an apparatus and method for thermoforming a plastic article from a sheet of plastic material heated to a predetermined forming temperature. The apparatus includes a mold having forming surfaces defining a forming cavity generally conforming to the shape of the plastic article to be formed. The heated plastic sheet is urged into contact with the forming surfaces of the mold to form the plastic article. The mold includes at least one undercut forming element moveable between an advanced position wherein the element projects into the forming cavity to form an undercut portion in the plastic article and a retracted position wherein the element is withdrawn from the forming cavity to enable the formed plastic article to be removed from the forming cavity. After the plastic article has been formed, the undercut forming element is moved to the retracted position and a stripper plate is utilized to remove the formed plastic article from the forming cavity.

Abstract: A tile making machine in which tiles are formed on pallets conveyed in succession through the machine has laterally spaced, longitudinally extending tracks for supporting the pallets. The pallets can be supported at different heights by the provision of a fixed track to provide a relatively low track level and another track removably supported by the fixed track to provide a higher track level. The higher track level enables pallets for tiles of flatter profile to be conveyed without requiring the pallet to have an excessive depth.

Abstract: A mold to manufacture an improved press-on bottle cap is disclosed. The cap has a top disk and a thin-walled outer skirt dependent therefrom with an annular tear score line on its inside wall and a laterally projecting tear tab which permit the cap to divide into a lower portion an upper reclosure cap. An annular lip is provided about the outside wall of the cap, approximately in the middle of the reclosure cap. The lip is discontinuous with an open sector above the tear tab. The mold has its parting line in the plane of the annular lip and the lower half of the mold has a lateral cavity to form the tear tab. In this manner, a laterally offset tear tab is provided without splitting the mold cavity along an axial plane.

Abstract: A metal mold for plastic molding a semiconductor device by a transfer-molding method with the use of thermo-hardening plastics. The mold includes a pot section into which plastic is injected; a cavity section where a product is formed; a runner section constituting a path for the plastic from the pot section to the cavity section; a gate section provided between the runner section and the cavity section so as to reduce the cross-sectional area for the flow of the plastic which flows therethrough from the runner section to the cavity section; and a flow restrictor section provided in the path of the runner section so as to reduce the cross-sectional area of the flow of plastic.

Abstract: Insole feeding apparatus for a molding press having an insole receiving cavity to receive insoles from a support structure that carries dual trays which hold insole supplies alternately positionable to allow insoles to be picked out of a tray and placed in the mold cavity. The mold press is provided with an insole kicker plate subject to positional adjustment in the cavity in accordance with an operator teach device capable of locating the kicker plate in the mold cavity for producing molded insoles having desired style and size characteristics. The apparatus is made to follow a desired method in which kicker plate adjustments can be stored in a computer memory for rendering the molding press capable of accommodating various insole and size production runs.

Abstract: A method of casting decorative emblems from a polyurethane-type compound. A series of decorvative discs are held flat and horizontal while the polyurethane composition is cast thereon to form a meniscus. The polyurethane composition comprises a polyether polyol component and a diisocyanate component. The cast polyurethane, when cured, gives a lens effect to the decorative discs.