Electrolytic processing apparatus

Claim 1

IN AN APPARATUS FOR ELECTROLYTICALLY TREATING METAL SURFACES, AN APERTURED PLATE FOR SUPPORTING A METALLIC OBJEC TO BE TREATED, MEANS CONTAINING A BODY OF ELECTROLYTE BENEATH SAID PLATE, MEANS FOR PROJECTING A COLUMN OF ELECTROLYTE FROM SAID BODY ONTO THE EXPOSED SURFACE OF THE OBJECT OVERLYING THE APERTURE IN SAID PLATE, A MAIN CIRCUIT INCLUDING SAID BODY OF ELECTROLYTE, SAID COLUMN AND SAID OBJECT ARANGED TO PASS AN ELECTRIC CURRENT BETWEEN SAID COLUMN AND SAID OBJECT ACROSS SAID EXPOSED FACE OF SAID OBJECT, A FIRST RELAY HAVING CONTACTS INCLUDED IN SAID MAIN CIRCUIT FOR CONTROLLING THE LATTER, AUXILIARY CIRCUIT MEANS ACTUATED BY THE IMPIGEMENT OF ELECTROLYTE UPON SAID OBJECT FOR CONTROLLING SAID FIRST RELAY TO CLOSE SAID MAIN CIRCUIT, WHEREBY ENERGIZATION OF SAID MAIN CIRCUIT IS DEPENDENT UPON THE COLUMN OF ELECTROLYTE BEING IN CONTACT WITH SAID OBJECT, A TRANSFORMER, MEANS FOR PRODUCING A RECTIFIED DIRECT CURRENT FROM THE TRANSFORMER, A SECOND RELAY HAVING CONTACTS FOR CONNECTING THE RECTIFIED CURRENT TO SAID MAIN CIRCUIT, A CONTROL CIRCUIT INCLUDING A TIMER FOR ACTUATING SAID SECOND RELAY, AND A PLURALITY OF HAND-OPRATED SWITCHES IN SERIES IN SAID CONTROL CIRCUIT, SAID SWITCHES BEING NORMALLY BIASSED TO OPEN POSITING AND BEING SPACED APART A DISTANCE GREATER THAN CAN BE SPANNED WITH A HUMAN HAND.