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VACUUM CASTING FURNACE

  • US 3,845,807 A
  • Filed: 03/31/1972
  • Issued: 11/05/1974
  • Est. Priority Date: 04/01/1970
  • Status: Expired due to Term
First Claim
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1. A furnace for working high temperature melting point materials, comprising:

  • a casing having a removable end portion;

    a heated muffle in said casing, enclosing a chamber;

    a mold assembly mounted in said chamber, said assembly including a porous mold having a pattern cavity therein, and a molten material holding well communicating with said cavity;

    said mold assembly is pivotally mounted for tilting said mold assembly to deposit molten material from said well into said cavity;

    vacuum means for applying a vacuum to said chamber through the porous material of said mold to draw the molten material into the cavity, means including a gas inlet for admitting gas to said chamber opposite to the vacuum means, and said inlet being positioned to direct incoming gas against the mold assembly for tilting the assembly.

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