Abstract: A casting method and a casting device for a cast-metal object which are inexpensive and have a high degree of freedom are provided to cast plural types of cast-metal objects simultaneously. A cast-metal object is cast by using a casting device (10) including a mold structure (5) for forming a casting space capable of filling molten metal; and a runner (1) provided separately from the mold structure (5) for supplying molten metal into the casting space in the mold structure (5) by connecting the runner to the mold structure (5), wherein the runner (1) has a dividable structure, and the mold structure (5) has an assembly structure of a plurality of members.

Abstract: A full mold casting process in which a complete, positive model made of a thermally decomposable material is placed in a molding box and filled with sand; the sand is hardened by shaking. Casting metal is poured on the thermally decomposable model and the model is decomposed by the casting heat. In order to fill up the cavities of the model and mold moldings with crucial cavities, reliably with the molding sand, the model is provided with pass-through apertures. By introducing the flow-through holes into the casting model, preferably through the flange and button sides, all cavities of the casting model are completely filled with sand and the latter is compressed against the model. The rising of the sand in the model cavity is facilitated by the fact that the filling level of the molding sand is kept nearly constant near the model cavity to be filled until the cavity is completely filled.

Abstract: The drag flask has at least two opposed sides which include recesses proximate the matchplate. Manifolds are provided in the recesses to communicate compressed air from a source of compressed air to air inlets provided in the manifold. The manifolds are separated from the recesses using an elastomeric seal which is contoured to direct the compressed air between an air passage disposed between the drag mold and the matchplate. When incorporated into a sand mold forming machine, sensors are positioned on the sand mold forming machine to detect when the drag flask has reached a releasing position to thereby cause the source of compressed air to inject air into the manifold and air passage for release of the drag mold from the drag flask.

Abstract: The pattern plate of a matchplate molding machine is attached to a drag flask by spring-loaded clamps which may be rapidly opened to enable the plate to be quickly and easily removed from the flask and replaced by another plate. Locating members are attached to the flask in laterally opposed relation with the clamps and coact with the clamps to fixture the pattern plate accurately on the flask. A removable operating handle is provided for opening the clamps and carries a latch for releasably holding the clamps in their open positions during changing of the pattern plates. A conventional bolt-on pattern plate may be converted for use with the clamping system by attaching bars with downwardly inclined upper surfaces to the pattern plate, the bars being secured within notches in the side edges of the plate.

Abstract: A first insert is arranged to be engaged with one surface of a matchboard in alignment with a bore in the matchboard. A second insert has a portion thereof arranged to be engaged with the opposite surface of the matchboard at the bore. The first and second inserts have impression forming portions arranged to make recess and projecting contours respectively in impression material with a close tolerance interfitting engagement when in facing relation to provide anti-shifting connection to opposed portions of the impression material. The inserts have a telescoping engagement which precisely aligns the first and second inserts in their impression forming functions, and such telescoping arrangement provides adjustable mounting of the inserts on matchboards of different thicknesses.

Abstract: Inserts with projections and recesses are provided for securement to mold components and also are arranged to make respective recesses and projections in impression material such as sand. These recesses and projections in the impression material are dimensioned and shaped to have a reverse interfitting engagement to accomplish anti-shift functions and are dimensioned and arranged to form spaces between facing impression portions for receiving loose impression material. This arrangement also forms an improved method of mounting anti-shift inserts.

Abstract: A method, apparatus and feeder sleeves are described for producing casting moulds having feeder sleeves incorporated therein in instances when the mould pattern plate or the cope mould are not accessible. Two part feeder patterns having a lower part and an upper part and feeder sleeves whose lateral surface tapers from the bottom and to the top end of the sleeve are used. For moulds having a side feeder the lower part of the pattern produces a depressed seating surface for the feeder sleeve in the drag mould and the upper part which has substantially the same taper as the taper of the feeder sleeve and dimensions greater than the corresponding dimensions of the lateral surface of the feeder sleeve produces a cavity in the cope mould. The cope and drag moulds are closed in such a manner that the central vertical axis of the cavity in the cope mould is in line with the central vertical axis of the feeder sleeve, and there is a gap between the wall of the cavity and the outer lateral surface of the sleeve.

Abstract: A core blowing machine receives match plates on a mounting surface so that a sand and bonding agent mixture may be packed about the match plate and exposed to a catalytic gas for forming a mold component. A support surface is disposed beneath the mounting surface. An auxiliary assembly includes an auxiliary mounting surface and an auxiliary support surface in substantially the same spatial relationship as the mounting and support surfaces. A support jack is placed on the auxiliary support surface and is adjusted in length to extend between the auxiliary support surface and a match plate mounted in the auxiliary assembly. Then the suppot jack is placed in a position on the support surface which is similar to the position occupied on the auxiliary support surface and the matching plate is disposed on the mounting surface. Indicia are provided on both the auxiliary support surface and the support surface to aid in placing the support jack in the similar position on the latter surface.

Abstract: A locating core for sand molds, has a larger diameter frusto-conical upper portion and a smaller diameter frusto-conical lower portion which are joined together at the bases. A mold cope and drag each have two conical depressions therein adapted to receive the upper and lower portions of the locating core respectively and positioned so that the mold cavities in the cope and drag are in proper registration when the depressions are in registration. A step is formed on the core between the diameters of the bases at the junction of the upper and lower cone portions. The step rests on the upper surface of the drag when the core is set in the drag depressions and the cope is then placed so that the cope depressions engage the upper conical portions, whereby the cope and drag mold cavities are in registration.

Abstract: A pattern plate adapted to support a pattern having a plate body with gage blocks to insure uniform body thickness and a plurality of lug and recess sets for forming a series of pockets and bosses in the cope and drag sections of a sand mold. The lug and recess sets are arranged in end-to-end or chain like arrangement adjacent the ends and sides of the body. Each lug and recess set has a pair of arcuate cavities open to opposite sides of the body and a pair of oppositely directed arcuate lugs. Each lug has an arcuate pad projected outwardly along its crown to form a well in the bottom or top of the pockets in the molds to accommodate loose foreign particles, as sand. In one form of the invention two pattern plates are secured together in a side by side relation to form a match plate pattern assembly. The pads on the lugs space the plate bodies from each other to provide a venting passage between the bodies.