Apparatus for electropolishing metals

Claim 1

APPARATUS FOR ELECTRO-POLISHING THE INTERIORS OF METAL CONTAINERS COMPRISING A RESERVOIR, A PAIR OF SPACED PARALLEL CONDUCTIVE MEANS EXTENDING OVER THE RESERVOIR BETWEEN THE EDGES THEREOF, EACH ADAPTED TO SUPPORT A ROW OF CONTAINERS TO BE POLISHED, A SUPPORT ABOVE THE RESERVOIR, SPACED YOKES JOURNALED ON THE SUPPORT ON AN AXIS PARALLEL TO SAID CONDUCTIVE MEANS, SPACED METAL PIPES PARALLEL TO SAID CONDUCTIVE MEANS EXTENDING BETWEEN SAID YOKES AND EACH PROVIDED WITH A PLURALITY OF OPENINGS, EACH OPENING BEING ABOVE ONE OF THE CONTAINERS, METAL ELECTRODES DEPENDING FROM THE PIPES FOR IMMERSION IN THE CONTAINERS, SAID YOKES AND PIPES BEING DISPOSED AND ARRANGED FOR ROCKING MOVEMENT ON SAID SUPPORT FOR FIRST RAISING THE ELECTRODES ON ONE OF THE PIPES ABOVE ONE OF SAID ROWS OF CONTAINERS AND THEN LOWERING THE ELECTRODES ON THE OTHER PIPE INTO THE OTHER ROW OF CONTAINERS, MEANS FOR FORCING ELECTROLYTE FROM THE OPENINGS IN ONE OF THE PIPES INTO THE CORRESPONDING ROW OF CONTAINERS, AND MEANS FOR PASSING A DIRECT CURRENT BETWEEN THE ELECTRODES AND SAID CONTAINERS.