Investment casting apparatus

Details Investment casting apparatus Investment casting apparatus

1977-12-05

1979-07-17

Baldwin, Robert D.

Metal founding

Means to shape a forming surface

Pattern

164246, 164DIG4, B22C 702

Patent

active

041612086

ABSTRACT:
A precision investment casting assembly has a model support consisting of a central upstanding sprue former and outwardly extending tubes to support wax models. The sprue former is held at one end by a resilient base. A somewhat key-hole shaped recess in the base receives a split flask which encircles the support. An elongated pin engages the free edges of the split flask to close it while embedment material is poured around the support. The pin is removed to release the flask from the embedment material after casting. Proper orientation of the support elements is aided by a plurality of keys and keyways.

REFERENCES:
patent: 3648760 (1972-03-01), Cooper
patent: 3974996 (1976-08-01), Violet
patent: 4003423 (1977-01-01), Shikinai et al.

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