Abstract: The device is constituted by a prism-shaped structure which has flat faces, is internally hollow and is rotatably mounted, with preset stops, about a horizontal axis which lies at right angles to the direction of movement of the casting head. A core box is mounted on at least two oppositely arranged faces of the rotating prism-like structure and supports a lower half-mold and associated plates for extracting the finished core; each one of the lower half-molds can be placed in succession, upon rotation of the prism-like structure, at the movable upper half-mold so as to allow, by means of a single upper half-mold, to mold a core in each one of the lower half-molds and to simultaneously extract the previously finished core from the oppositely arranged half-mold.

Abstract: Molding sand loading and injecting head comprising a vertical cylindrical injecting chamber adapted to be placed in contact with a core box placed below the chamber and provided with an annular tank for compressed air associated with a movable-shutter device adapted to send the compressed air into the chamber both axially and transversely thereto. The head has support and guiding sleeves including an inner sleeve rigid with the chamber and an outer coaxial sleeve rigid with a supporting frame work. The head further comprises a hydraulically operated distributing valve, arranged coaxially to the chamber and associated with the compressed air distribution shutter, for vertically moving the chamber and the related shutter in both directions.

Abstract: Device for rapidly locking core boxes on respective supporting plates, comprising a pin vertically rigidly attached to the base of a core box and freely insertable in a corresponding first hole extending in the supporting plate, at least one recess in the pin, defining an engagement portion for a cam element mounted rotatably, without axial translatory motion, within the supporting plate in such a position as to interfere, only with a protruding part thereof, with the recess so as to lock the pin to the supporting plate and to disengage the pin after the partial rotation of the cam element, retention members being furthermore provided for the cam element, preventing axial translatory motion thereof. The cam element furthermore comprises an end tang protruding from the supporting plate, for rotating the cam element by a key and the like.

Abstract: A molding machine for molding-sane cores employing openable dies and an injection head with a cylindrical chamber, comprising a compressed air tank coaxial with the chamber, shutters for feeding air at the top of the chamber, movable supports for the head for shifting the head both horizontally and vertically from the working position to a lateral one, a raising piston connected to the lower die for vertically shifting the lower die against and away from the fixed upper die, a drilled gassing plate for gassing the core formed within the closed dies, mounted movable away from and towards the fixed upper die, a plate having dowels for raising and extracting the core formed by the lower die after it has been lowered relatively to the fixed one, an openable collet movable away from and towards the core in extracted position from the lower die and movable outside the machine to a finishing (trimming) station, programmed control and operating devices for obtaining the sequence of the operating phases, and extractio