Apparatus for fabricating electrotyping shells

Claim 1

IN AN APPARATUS FOR PLATING METAL ON THE SURFACE OF A MOLD TO PRODUCE A THIN METALLIC SHELL, A NON-METALLIC VESSEL FOR CONTAINING AN ELECTROPLATING SOLUTION, A CONDUCTOR MEMBER MOUNTED ON SAID VESSEL AND CONNECTED TO A SOURCE OF ELECTRICAL ENERGY, A CASE SUSPENDED WITHIN THE VESSEL AND DISPOSED FOR CONTACT WITH SAID ELECTROPLATING SOLUTION, SAID CASE FORMED OF A MAGNETICALLY SUSCEPTIBLE MATERIAL AND HAVING A SURFACE TO SUPPORT THE MOLD TO BE PLATED, A SERIES OF MAGNETS COOPERATING WITH THE MAGNETIC SUSCEPTIBLE CASE TO TIGHTLY HOLD THE MOLD AGAINST THE CASE, AN ELECTRICALLY INSULATING COATING COVERING THE CASE AND BEING GENERALLY INERT TO SAID ELECTROPLATING SOLUTION, A SECOND ELECTRICALLY INSULATING COATING COVERING EACH OF SAID SERIES OF MAGNETS AND BEING GENERALLY INERT TO SAID ELECTROPLATING SOLUTION, AND MEANS FOR ELECTRICALLY CONNECTING SAID MOLD HELD AGAINST SAID CASE TO SAID CONDUCTOR MEMBER TO THEREBY ESTABLISH AN ELECTROLYTIC CIRCUIT AND DEPOSIT THE PLATING METAL ON THE MOLD TO PRODUCE THE SHELL.