Chemistry: electrical and wave energy – Apparatus – Electrolytic
204228, C25C 706, C25C 306
Apparatus for limiting the upward movement of the anodes of a computer-controlled aluminum reduction cell is disclosed. An air motor is connected with a jack for raising or lowering the superstructure supporting the cell anodes when air pressure is admitted to the motor in response to either a computer or cell-operator-initiated pilot air signal. Computer-generated pilot air signals of a time duration which could cause the air motor to raise the superstructure and create an open anode condition, are interrupted after a predetermined time period. A ball-cam valve is positioned in a fixed relation to the anode superstructure to interrupt either a computer or cell-operator-initiated "up" anode signal to the air motor when the anode superstructure reaches a predetermined upper limit.
patent: 3329592 (1967-07-01), Uhrenholdt
patent: 3434945 (1969-03-01), Schmitt et al.
patent: 3761379 (1973-09-01), Elliott
patent: 3902983 (1975-09-01), Warren
Hanegan Herbert M.
National Steel Corporation
Tate Stanley L.
Tufariello T. M.
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