Abstract: A multiple casting die assembly, useful for receiving injected molten metal under pressure, is disclosed. Plural pairs of mating die members are abuttingly arranged in series; the parting plane for each pair of die members is generally arranged to bisect each of the casting cavities resulting in mating cavity portions that meet at the parting plane. Means are provided for clamping the die members in series and for forceably separating the die members which automatically severs the sprue. The clamping force is reduced to that needed for only one casting cavity and cycle time is decreased for withdrawal and ejection of sound die cast bodies.

Abstract: This blocking apparatus for fixing a metal block to the finished face of a semi-finished spectacle lens blank by casting a low-melting metal into a mold contacting the finished face of the blank comprises a mold made of two sections, namely a fixed section and a movable section, the former carrying the annular seat for the lens blank and the latter carrying relief elements, these two mold sections being in mutual rotary contact through part-spherical surfaces constituting a ball-joint centered to the axis of the annular seat. Control means are operatively connected to a shaft rigid with the movable mold portion for orienting same and cause same to be lipped about the center of the ball-joint in order to impart the prescribed prism value and the prescribed prism axis orientation, and align the relief elements with the prescribed cylinder axis.

Abstract: A method for the die casting of end rings and conductor bars in rotors employing a die casting machine having a compensator mechanism comprising a compensator sleeve and a compensator for reciprocal movement along a first axis. A coaxially movable die plate closes off one end of the compensator sleeve to form a die cavity for casting. A plurality of lamination stacks, each held together by a removable stacking pin, are stored on an inclined loading rack positioned laterally on one side of the compensator mechanism. A few of these stacks roll down inclined planes into the compensator sleeves. The compensator pushes the stacks forward into abutment with the die plate and a charge of molten material is injected into the die cavity. The die plate then moves axially away from the compensator and a retriever moves perpendicular to the first axis to an unload position between the compensator sleeve and die plate.

Abstract: The invention concerns the technical problem of providing a simple and reliable apparatus for separating castings from moulds of sand or similar material at the end of a guiding track, on which the moulds with the enclosed castings are advanced step by step towards a knocking-out station. With a view hereto the apparatus comprises a number of possibly interchangeable claws equipped with vibrators which, when moved into the row of moulds, can penetrate the mould sand and be caused to enclose and pinch the outermost casting, whereafter the claws are shifted back to the initial position in which the pair of tongs formed by the claws can open in order to deliver the casting for further treatment. The claws can be specially formed so as to retain possible core sand in the castings.

Abstract: Centrifugal casting apparatus for casting cylinder liners and other tubular articles, characterized by recovery of at least a major portion of the particulate refractory material used to line the mold, with the recovered refractory material being suitable for re-use. The apparatus provides a chamber having aligned openings through which the cast article moves as the article is withdrawn from the mold by a puller. Particulate refractory material from within the mold and from the surface of the cast article is collected in the chamber and conveyed from the chamber to separator means for removal of debris.

Abstract: Sand bales containing castings are removed from poured foundry molds by clamping together in a horizontal position the molding boxes containing the sand bales, by supporting the sand bales from below independently of the molding boxes, and by applying to the molding boxes jarring or accelerative forces acting in a vertical direction with a magnitude exceeding the static frictional forces which exist between the sand bales and the molding boxes, with these forces being applied while the sand bales are supported thereby to cause the sand bales to move out of the molding boxes. In one aspect, the sand bales are supported from below by a force lower than the weight of the bales thereby to permit the bales to drop out of the molding boxes while the accelerative forces are applied to the molding boxes in an upward direction. Conversely, the sand bales may be lifted upwardly out of the molding boxes with accelerative forces being applied to the molding boxes in a downward direction.

Abstract: A die casting unit employing plural die members and core members which are used in closed position for die casting shaped articles of unusual configuration and particularly articles which are comprised of two or more subcomponents arranged or joined in interconnected assembly, an example of such shaped article being the slider body and pull chain used on slide fasteners. Movement of at least the die members during the molding cycle is effected by rotation of a ring member carrying structure which cooperates with structure on the die members to slide the die members between their open and closed positions.

Abstract: A plate strap is die-cast integrally with an upstanding conducting member, which may be either a terminal post or a riser to form part of an intercell connector, by means of a mold having a cavity affording an elongated plate strap position which is closed at the top and has slots in the floor through which the plate lugs project, and a chimney position upstanding from the plate strap position to form the upstanding conducting member. The part of the floor between the plate lugs is formed by cylindrical dowels each having a diameter substantially equal to the spacing between adjacent lugs. The dowels are retracted to permit removal of the mold from the plate strap or straps. A single mold may form a row of plate straps associated with a number of intercell connectors and a pair of terminal posts.

Abstract: A positioning apparatus for a centrifugal casting machine having an articulated mold that is mounted for rotation in a cantilevered manner on a drive shaft. The positioning apparatus includes a pair of pillow block bearings having arcuate bearing races that operate to allow the drive shaft to be tilted within a predetermined angular range relative to its longitudinal axis. In addition, the positioning apparatus includes a plurality of locking pins each of which are mounted to cooperate respectively with one of a plurality of positioning members mounted on a rotatable mold-supporting face plate of the casting machine. Operation of the lock pins into engagement with the positioning members moves the face plate into a predetermined position relative to its axis of rotation, following a casting cycle of the machine, so that segments of the centrifugal mold can be radially stripped from an article cast therein without unduly distorting the cast article.

Abstract: The present invention relates to counterpressure casting arrangements and may prove to be most advantageous for producing castings which should meet more exacting requirements as to their physicomechanical properties and tightness.Said arrangement comprises a pouring device with a partition plate subdividing it into two chambers, of which the bottom one contains a vessel for the melt, while the top one accommodates a casting die, the arrangement having also a die-casting machine located outside the body of the top chamber and provided with a device for reiterated introduction and withdrawal of the dies, said device being mounted on a transporting device which is made with a possibility of carrying the dies from the die-casting machine to the partition plate of the pouring device and back to said machine.

Abstract: A "Flask and Pattern Starter" device, for the purpose of providing a seal-breaking movement of the cope flask and for the matchplate pattern also, as a molder "squeezer molds" in a foundry operation where he is lifting a flask, and a pattern. The apparatus serves as a leverage surface for the hands of the molder as he separates the pattern from cope and drag flasks in a molding operation. The device is placed over guide pins which are normally used on pattern equipment in the foundry operations.

Abstract: For the purpose of separating castings from the sand or similar material forming a string of moulds, each of the castings proper together with a lump of heat damaged mould material totally surrounding the casting is separated from the mould string. After having been subjected to an appropriate degree of cooling, the castings are separated from the lump material which, after sufficient regeneration, may be re-used together with the non-damaged material of the moulds.

Abstract: Disclosed is a casting machine which includes a truck driven horizontally in an advancing direction. A plurality of molds are carried on the truck. The molds are aligned in the advancing direction and are rotatable about axes extending perpendicular to the advancing direction. Each mold has a rearwardly extending lip which overlaps the forward edge of the next succeeding mold when the molds are horizontally arranged. Arms are connected to each of the molds for rotation therewith. The arms have wheels thereon which cooperate with guides adjacent to the path of travel of the truck in the advancing direction to control the rotational attitude of the molds. The aforesaid guides have horizontal sections which maintain the molds in a horizontal attitude, and curved sections which rotate the molds about their respective axes in order to discharge the contents thereof at a casting discharge position.

Abstract: Die casting apparatus for casting parts such as rotors or the like comprises a three tie bar horizontally disposed die casting machine, with an indexing mechanism mounted on one of the tie bars for rotating the parts through six separate radially spaced work stations. The work stations include loading, casting, cooling, skew pin ejection, and unloading stations. The casting station includes a four plate die assembly comprising a runner plate, cover die, carrier plate, and ejector die. The die assembly employs pin-point gating and is formed such that the cast part is removed from the die and the runner system, and the runner system is ejected from the apparatus, while the part is at the casting station. A movable runner ejector plate having ejector pins ejects the runner from the runner plate. A compensating cylinder is provided for adjustment for variance in stack height.

Abstract: A method and apparatus for casting steel slugs which utilizes a measured charge of molten steel discharged centrally of a rotating table having radial channels to distribute the metal rapidly to circumferentially-spaced, individual, trunnion-mounted receptacles at the end of each channel. The receptacles are designed to have a center of gravity outside the trunnion axis when empty, and inside the trunnion axis when charged. After a predetermined cooling period, a mechanical latch release allows the rotating, loaded receptacles to dump radially to a suitable conveyor and the cycle may be repeated.

Abstract: A casting support for use in automatic cast trim machines having improved casting retention characteristics and being suitable for use in machines having a simple rail for the return of spiders to the melting pot. This support is characterized by a projection supporting an enlarged end about which the casting is formed, with suitable regions adjacent the projection to provide positive locking of the extensions of the casting around the projection to prevent separation of the casting in that area and the resulting loosening thereof upon the rotation of the index mechanism in the cast trim machine. Shrinking of the casting during cooling in combination with the locking of the casting provides positive orientation of the casting on the support, yet ready removal thereof by a simple punch.

Abstract: The disclosed crystallizer positioning and displacing apparatus includes a movable carriage with grippers adapted to engage the suspension shaft of the crystallizer, the carriage also having at least two wedge-shaped abutments adapted to abut against wedge-shaped lugs mounted on the crystallizer in alignment with these abutments, the wedge-shaped abutments and the wedge-shaped lugs being situated below the suspension shaft of the crystallizer.

Abstract: In an ejector pin assembly for injection moulding tools the ejector pin plate is positively retracted and locked in its rear position by providing the tool with a rearwardly extending hollow housing, having an inner annular pocket, by slidably arranging in said housing a slidable member, being connected to the ejector pin plate and having radial holes for receiving cupling elements such as balls, segments or the like, by arranging in said housing a spring operated member, which normally prevents the coupling elements from penetrating said sliding member inwardly and by securing to the generally stationary ejector means of the injection moulding machine an ejector rod, which near its free end has an annular groove into which said coupling elements may enter when said rod has been introduced in the housing and the spring operated member as a consequence thereof has been displaced such that it does not any longer cover said openings.

Abstract: For the purpose of separating castings from the sand or similar material forming a string of moulds, each of the castings proper together with a lump of heat damaged mould material totally surrounding the castings is separated from the mould string. After having been subjected to an appropriate degree of cooling, the castings are separated from the lump material which, after sufficient regeneration, may be re-used together with the non-damaged material of the moulds.