Core knock-out fixture

Abstract

The special angular fixture or jig for mounting a casting, such as a die cast engine block, resiliently holds the casting both inside and outside of a cabinet, in which cabinet the casting is high-frequency-vibrated for removing an expendable and disintegrated core, such as of sand, from the casting. The fixture is so located with respect to the door to the cabinet so that when the door is closed, the casting on the fixture is resiliently held between the closed door and a vibrating plate of a high-frequency vibrator. Specifically, the fixture disclosure is L-shaped and mounted on cushioned legs to a downwardly open door to a cabinet, which legs permit the casting to be urged against a vibrating plate mounted in the cabinet when the door of the cabinet is closed. The cabinet collects the particles of the disintegrated core which are vibrated from the casting.

Dependencies are inferred from the claim text.