Metal founding – Process – Shaping a forming surface
Patent
1974-09-23
1976-11-02
Husar, Francis S.
Metal founding
Process
Shaping a forming surface
141 67, 164201, B22C 1522, B65B 106
Patent
active
039890864
ABSTRACT:
A storage vessel filled with a granular composition for forming mold parts has a bottom opening aligned with an opening in a pressure vessel located directly below the storage vessel. Upon being filled with the granular composition from the storage vessel, the pressure vessel is arranged so that the opening can be closed. The pressure vessel is movable vertically toward and away from the storage vessel. In its upper position it can be filled with the composition, and in its lower position can evacuate the granular composition into a cavity in a core molding device through nozzles situated at the bottom of the pressure vessel. The nozzles are directed into bores in the molding device and allow the granular material to exit when a compressed air source within the pressure vessel is activated.
REFERENCES:
patent: 2611938 (1952-09-01), Hansberg
patent: 2613409 (1952-10-01), Miller
patent: 3163894 (1965-01-01), Bego et al.
patent: 3217364 (1965-11-01), Genest
patent: 3253304 (1966-05-01), Hatch
patent: 3461948 (1969-08-01), Londal
patent: 3474836 (1969-10-01), Schwake
patent: 3613770 (1971-10-01), Janke
Brown John S.
Husar Francis S.
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