Electric arc furnaces

Details Electric arc furnaces Electric arc furnaces

1979-03-08

1981-01-06

Envall, Jr., Roy N.

H05B 71 01

Patent

active

042438322

ABSTRACT:
The invention relates to electrode support gear utilized with electric arc furnaces incorporating consumable electrodes. The support gear incorporates two sets of clamps for the electrode, one of which is spring biased to hold the electrode against movement under gravity, and the other which is power operated and can be used to slip the electrode to and fro in relation to the first set of clamps. The arrangement achieves a saving in capital costs in that only one set of clamps is power operated and safety is achieved in that the spring biased clamps constantly grip the electrode. An additional safety feature may be provided by springs on the power operative clamps which operate to clamp the electrode in the event of a power failure.

REFERENCES:
patent: 2297484 (1942-09-01), Lehrer et al.
patent: 2668183 (1954-02-01), Foyn
patent: 3107267 (1963-10-01), Blackmore
patent: 3898364 (1975-08-01), Hardin

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