Pressure responsive liquid supply for breather valve

Claim 1

IN COMBINATION WITH A RECIPROCATING LIQUID-SEALED PRESSURE RELIEF VALVE, FLUE CONNECTED TO AND ADAPTED TO TRANSMIT PRESSURE AND VACUUM CONDITIONS FROM STORAGE RECEPTACLES, A SEALING LIQUID SUPPLY SYSTEM RESPONSIVE TO THE PRESSURE CONDITIONS TO BE RELIEVED COMPRISING A LIQUID TRANSMISSION CHAMBER ADJACENT THE RELIEF VALVE POSITIONED TO SUPPORT THE OPERATING LIQUID LEVEL OF SAID VALVE THEREIN, A RESERVOIR OF SEALING LIQUID ABOVE SAID TRANSMISSION CHAMBER, A CONDUIT CONNECTED THEREWITH, A VALVE IN THE CONNECTING CONDUIT SUBMERGED IN THE LIQUID IN SAID TRANSMISSION CHAMBER, AN OPERATING CHAMBER SUPPORTING A DIAPHRAGM AND ADAPTED TO CONTAIN A FIXED VOLUME OF OPERATING LIQUID, SAID OPERATING CHAMBER BEING POSITIONED TO KEEP THE DIAPHRAGM SUBMERGED IN THE LIQUID OF THE TRANSMISSION CHAMBER AT A DEPTH TO PLACE THE LIQUID THEREIN ON A LEVEL WITH THE SURROUNDING LIQUID UNDER NORMAL OPERATING CONDITIONS, AN INVERTED PRESSURE CUP IN SAID OPERATING CHAMBER PARTIALLY SUBMERGED IN THE OPERATING LIQUID, THE RELATIVE AREAS OF THE INVERTED PRESSURE CUP AND THE OPERATING CHAMBER BEING PROPORTIONATE TO THE AREA COVERED BY THE RECIPROCATING RELIEF VALVE AND THE TOTAL AREA OF SEALING LIQUID EXTERNALLY OF THE OPERATING CHAMBER AND SAID VALVE, A CONDUIT CONNECTING THE RELIEF VALVE FLUE CONNECTION TO THE PRESSURE SPACE IN THE PRESSURE CUP THEREBY TRANSFERRING LIKE ACTUATING PRESSURES TO BOTH THE RELIEF VALVE AND THE INVERTED CUP, AND VALVE OPERATING MEANS CONNECTING THE RESERVOIR CONDUIT VALVE AND THE DIAPHRAGM.