Tilt and swing lock mechanism for electric furnace

Details Tilt and swing lock mechanism for electric furnace Tilt and swing lock mechanism for electric furnace

1975-09-05

1976-09-14

Envall, Jr., R. N.

F27B 1402

Patent

active

039808017

ABSTRACT:
A mechanical tamper-resistant interconnecting locking apparatus is connected to a top charge tiltable direct arc electric furnace which includes a refractory lined furnace shell and a removable roof covering a top opening in the shell.
The apparatus includes a first locking mechanism which, when engaged, prevents the tilting of the furnace, and a second locking mechanism which, when engaged, prevents the swinging of the roof from over the shell top opening. A mechanical linkage interconnects the two mechanisms and prevents simultaneous disengagement of both of them. Also, once one of the mechanisms is disengaged and adjacent portions of the furnace are moved relative to each other, the entire locking apparatus is prevented from further movement until the adjacent portions are returned to the position providing lock mechanism engageability.

REFERENCES:
patent: 3684261 (1972-08-01), Wynne
patent: 3745224 (1973-07-01), Ames

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