by hydraulic or pneumatic means for positioning of electrodes

Full Title

Heating by electric discharge > Details > Power supplies specially adapted for heating by electric discharge; Automatic control of power, e.g. by positioning of electrodes > Automatic control of power > by hydraulic or pneumatic means for positioning of electrodes

Classification Context

Section:

ELECTRICITY

Class:

ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Subclass:

ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL