Vaporization cooling of electrical apparatus

Claim 1

IN COMBINATION, A SEALED TRANSFORMER TANK CONTAINING A CORE AND COIL ASSEMBLY, A VOLATILE INSULATING LIQUID IN SAID TANK INSUFFICIENT IN LIQUID VOLUME TO EFFECT APPRECIABLE IMMERSION OF SAID ASSEMBLY, SAID INSULATING LIQUID BEING VAPORIZABLE AT A PREDETERMINED DESIRED TEMPERATURE AT WHICH SAID CORE AND COIL ASSEMBLY ARE TO BE MAINTAINED, A PLURALITY OF SEALED COOLING TUBES PARTIALLY FILLED WITH A VOLATILE COOLING LIQUID, SAID TUBES EXTENDING THROUGH A WALL OF SAID CASING, SAID TUBES BEING INCLINED UPWARDLY FROM THEIR INNER ENDS TO THEIR OUTER ENDS, THE INNER END OF EACH TUBE BEING VERTICALLY ABOVE SAID CORE AND COIL ASSEMBLY, AXIALLY SPACED FINS ATACHED TO SAID TUBES OUTSIDE SAID TANK AND EXTENDING RADIALLY THEREFROM IN ALL DIRECTIONS, AND AXIALLY SPACED FINS ATTACHED TO SAID TUBES INSIDE SAID TANK AND EXTENDING RADIALLY THEREFROM IN ALL UPWARD DIRECTIONS ONLY, WHEREBY VAPORS OF THE INSULATING LIQUID IN SAID TANK ARE CONDENSED ON THE INNER ENDS OF SAID TUBES AND SAID UPWARDLY EXTENDING FINS AND THE CONDENSED LIQUID RUNS ALONG THE BOTTOMS OF SAID TUBES TO THEIR INNER AND LOWERMOST ENDS AND DRIPS OFF ONTO SAID CORE AND COIL ASSEMBLY THERE TO BE REVAPORIZED BY THE HEAT OF SAID ASSEMBLY AND COOL SAID ASSEMBLY BY VAPORIZTION.