Electrical capacitor

Claim 1

AN ELECTRICAL CAPACITOR COMPRISING, IN COMBINATION, A HOLLOW METALLIC CASING, LIQUID DIELECTRIC WITHIN SAID CASING A PLURALITY OF FLAT CAPACITOR PACKS DISPOSED IN SIDEBY-SIDE RELATION WITHIN SAID CASING FORMING AN ASSEMBLY HAVING GENERALLY RECTANGULAR SIDES AND GENERALLY RECTANGULAR TOP AND BOTTOM SURFACES, AN ENVELOPE OF INSULATION ABUTTING SNUGLY AGAINST THE INTERIOR SURFACE OF ALL OF THE SIDEWALLS OF SAID CASING AND CLOSELY SURROUNDING ALL OF SAID RECTANGULAR SIDES OF SAID ASSEMBLY AND INSULATING SAID PACKS FROM THE WALLS OF SAID CASING, SAID ENVELOPE EXTENDING BEYOND SAID PACK ASSEMBLY AT THE UPPER AND LOWER ENDS THEREOF AND HAVING SAID EXTENDING PORTIONS FOLDED OVER TO ENCLOSE SAID TOP AND BOTTOM SURFACES OF SAID ASSEMBLY, SAID FOLDED PORTIONS BEING SPACED APART HORIZONTALLY AND DEFINING OPENINGS THROUGH SAID ENVELOPE AT THE UPPER AND LOWER ENDS THEREOF, SPACER MEANS WITHIN SAID INSULATION ENVELOPE DEFINING VERTICAL CHANNELS WITHIN SAID ASSEMBLY IN HEAT EXCHANGE RELATION WITH RELATIVELY LARGE SURFACES OF SAID PACKS GENERALLY PARALLEL TO THE FLAT SIDES OF SAID PACKS FOR THE UPWARD FLOW OF SAID LIQUID DIELECTRIC IN HEAT TRANSFER RELATION WITH SAID PACKS, THE SIDEWALLS OF SAID CASING HAVING VERTICALLY EXTENDING, OUTWARDLY PROJECTING GROOVES THEREIN DEFINING, TOGETHER WITH SAID INSULATION ENVELOPE, VERTICAL DUCTS ISOLATED FROM SAID PACKS AND IN COMMUNICATION WITH THE OPENINGS AT THE TOP AND BOTTOM OF SAID INSULATION ENVELOPE, SAID LIQUID DIELECTRIC FLOWING BY CONVECTION IN A PATH UPWARDLY THROUGH SAID CHANNELS INTERIOR OF SAID ASSEMBLY AND THEN DOWNWARDLY THROUGH SAID DUCTS EXTERIOR OF SAID ENVELOPE AND DISSIPATING TO THE ATMOSPHERE THROUGH THE SIDEWALLS OF SAID CASING THE HEAT ABSORBED FROM SAID PACKS BY SAID LIQUID DIELECTRIC IN FLOWING THROUGH SAID CHANNELS.