Method of producing insulated magnet wire

Claim 1

THE CONTINUOUS METHOD OF PRODUCING AN ELECTRIC COIL WHICH COMPRISES PASSING A METALLIC WIRE THROUGH A BODY OF GELABLE LACQUER WHICH IS MAINTAINED AT SUBSTANTIALLY ATMOSPHERIC PRESSURE AND WHICH IS MAINTAINED IN THE LIQUID STATE BY BEING HEATED TO ABOVE ITS GELATION TEMPERATURE, WITHDRAWING THE WIRE FROM THE BODY OF LACQUER AND SUBSTANTIALLY SIMULTANEOUSLY LIMITING THE THICKNESS OF THE LACQUER FILM REMAINAING ON THE WIRE TO LESS THAN 0.005 INCH AND LESS THAN THAT OBTAINABLE BY THE NATURAL FLOW RATE OF THE LACQUER BY PASSING THE WIRE THROUGH A RESTRICTED OPENING FORMED BY TWO ARCUATE MEMBERS AT LEAST ONE OF WHICH ROTATES IN A DIRECTION SUCH THAT ITS EDGE ADJACENT THE WIRE MOVES IN THE SAME DIRECTION AS THE MOVEMENT OF THE WIRE THROUGH THE OPENING, COOLING THE LACQUER FILM ON THE WIRE TO BELOW ITS GELATION TEMPERATURE PROMPTLY UPON WITHDRAWAL OF THE WIRE FROM THE RESTRICTED OPENING, AND WINDING THE WIRE INTO AN ELECTRIC COIL OF DESIRED SIZE AND SHAPE DIRECTLY AFTER GELATION OF THE LACQUER COATING AND AS THE FINAL STEP IN A CONJOINT WIRE-COATING AND COIL-WINDING OPERATION.