Apparatus for producing casting molds

Details Apparatus for producing casting molds Apparatus for producing casting molds

1976-01-30

1977-01-04

Shore, Ronald J.

Metal founding

Means to shape a forming surface

Including means for compacting particulate fluent mold...

164162, 164211, 164244, B22C 1502

Patent

active

040007723

ABSTRACT:
The upper part of a casting mold is produced in apparatus which includes a mold table and a mold presser plate between which the casting mold is compressed. A pattern plate is positioned on the mold table and a feed hopper introduces mold forming material into a mold box arranged on the mold table. The feed hopper includes a premolding member which has a location and dimensions generally corresponding with a sink pattern member located on the presser plate in order to form a depression for a sink in the upper part of the mold. A sprue is formed by means extending between the pattern plate and the sink pattern member which includes a compressible spring which is compressed by the sink pattern member when the mold is compressed between the presser plate and the mold table.

REFERENCES:
patent: 1001887 (1911-08-01), Rothbone
patent: 1807578 (1931-05-01), McAvoy
patent: 2049967 (1936-08-01), Luton
patent: 2155800 (1939-04-01), Perazo
patent: 3094749 (1963-06-01), Yearley et al.
patent: 3234602 (1966-02-01), Hunter et al.
patent: 3256571 (1966-06-01), Lund
patent: 3648759 (1972-03-01), Lund et al.
patent: 3901307 (1975-08-01), Nieman

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