Metal vaporizer and method for vapor coating

Claim 1

THE METHOD OF COATING THE INTERIOR OF GLASS BULBS BY VAPORIZATION WHICH COMPRISES PREPARING A VAPORIZER MEMBER BY HELICALLY COILING A REFRACTORY METAL OVERWIND WIRE UPON A REFRACTORY METAL ORE WIRE, SHAPING THE CENTER PORTION OF THE RESULTING COMPOSITE WIRE BODY INTO A CONVOLUTED FORM, ELECTROPLATING SAID WIRE BODY WITH A VAPORIZABEL METAL OF LOWER VAPORIZATION TEMPERATURE THAN THAT OF THE METAL OF SAID WIRE BODY AND IN A PREDETERMINED AMOUNT SUFFICIENT ONLY TO COAT A SINGLE BULB, INTRODUCING THE RESULTING VAPORIZER MEMBER INTO THE INTERIOR OF A BULB, PASSING AN ELECTRIC CURRENT THROUGH THE VAPORIZER MEMBER TO HEAT IT TO A TEMPERATURE AND FOR A TIME SUFFICIENT TO VAPORIZE SUBSTANTIALLY ALL THE SAID VAPORIZABLE METAL FROM THE SAID COMPOSITE WIRE BODY AND TO CAUSE THE SAID VAPORIZABLE METAL TO BE DEPOSITED UPON THE INTERIOR SURFACE OF SAID BULB, AND THEN REMOVING SAID WIRE BODY FROM THE COATED BULB FOR RE-USE IN COATING ANOTHER BULB.