Dual holding furnace

Details Dual holding furnace Dual holding furnace

1975-03-31

1977-01-25

Dost, Gerald A.

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

With means to discharge molten material

164322, C21C 542

Patent

active

040047938

ABSTRACT:
An enclosed refractory lined furnace vessel has spaced apart refractory lined pouring chambers extending laterally from the lower end of the furnace body. Molten metal flows from the vessel to the chambers through flow passages and each chamber has a drain hole in its bottom which may be opened and closed by a stopper rod so that molten metal may be discharged into molds that are transported under the vessel by spaced conveyors. A receiving spout for molten metal has an inlet above the molten metal surface in the vessel and an outlet below the surface, thereby sealing the furnace from the atmosphere and enabling adding metal to the vessel without opening it or tilting it. An electrically resistive graphite rod extends across the interior of the furnace for maintaining its interior at a desired temperature.

REFERENCES:
patent: 1554367 (1925-09-01), Rackoff
patent: 2039738 (1936-05-01), Pugh
patent: 2054921 (1936-09-01), Betterton
patent: 2218171 (1940-10-01), Junghans
patent: 2481433 (1949-09-01), McBroom
patent: 3201224 (1965-08-01), Grim
patent: 3567205 (1971-03-01), Armour et al.
patent: 3655176 (1972-04-01), Winkler et al.
patent: 3685573 (1972-08-01), Domres et al.
patent: 3737153 (1973-06-01), Steffora et al.

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