Countergravity casting apparatus

Metal founding – Means to apply vacuum directly to work or to hold or... – Means applying vacuum or suction directly to molten casting...

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Details

164 63, 164256, B22D 1806

Patent

active

046588809

ABSTRACT:
Apparatus for the vacuum, countergravity casting of metal in shell molds including a gas-permeable shell mold secured to the mouth of a vacuum box by a plurality of threadable mounting sites atop the mold engaged by self-tapping threads on the ends of rotatable shafts reciprocably slidable through the ceiling of the vacuum box.The mounting sites may comprise upstanding lugs atop the mold.

REFERENCES:
patent: 2997756 (1961-08-01), Strom
patent: 4508157 (1985-04-01), Belliveau et al.

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