Abstract: A dosed amount of molding sand is placed in a vessel arranged at a given distance from a pattern device from which a mold is to be formed, and a pressurized force is applied against the molding sand in the vessel from the side thereof remote from the pattern device in order thereby to impart to the molding sand an acceleration in the direction of the pattern device to compress the sand about the pattern device with the velocity of the accelerated molding sand being braked by impact with the pattern device and also by impact partially with a molding box within which the pattern device is contained. The vessel containing the molding sand is connected to a pressure source by a valve device which controls the application of pressure to the molding sand. Additionally a vacuum device is utilized to apply suction tending to compact the sand within the vessel to produce a more cohesive mass.

Abstract: A filling apparatus includes a melt container with a bottom outlet spout and an interior closure plug. In certain embodiments the spout has a conical end. A casting mold has a pouring gate and channel. The container is supported by an elevating mechanism and either the container or the mold can also be movable horizontally to permit alignment of the spout and gate. A separatory body is between the spout and gate, several embodiments being disclosed including a layer of material formed on the spout and a conical member in a recess at the gate, the conical member being shaped to receive the conical end of the spout during filling. The separating member of the mold includes a receptacle having a volume greater than the volume of the spout bore below the closure plug to accept melt therefrom after filling.

Abstract: A dosed amount of molding material is placed in a vessel arranged at a given distance from a pattern device from which a mold is to be formed, and a pressurized force is applied against the molding sand in the vessel from the side thereof remote from the pattern device in order thereby to impart to the molding sand an acceleration in the direction of the pattern device to compress the sand about the pattern device with the velocity of the accelerated molding sand being braked by impact with the pattern device and also by impact partially with a molding box within which the pattern device is contained. The vessel containing the molding sand is connected to a pressure source by a valve device which controls the application of pressure to the molding sand. Additionally a vacuum device is utilized to apply suction tending to compact the sand within the vessel to produce a more cohesive mass.

Abstract: A molding machine for producingcasting molds has several angularly spaced molding stations and includes a main column and at least one swivel column positioned within and rotatable relative to the main column. Swivel bearings connect swivel arms to the main and swivel columns so that the arms extend transversely of and can be moved between the molding stations. Box frames for forming mold parts are secured to the free ends of the swivel arms so that they can be inverted or turned over. The swivel arms can be moved one above the other with the box frames holding mold halves which can be combined to form a complete mold.