Reverse leakage seal for reciprocating parts

Claim 1

A SEALING CONSTRUCTION FOR RAPIDLY RECIPROCATING POSITIVE DISPLACEMENT GAS COMPRESSORS HAVING A CYLINDER AND A PISTON UNITARY RECIPROCAL THEREIN, HAVING FIRST CLOSURE MEANS FOR ONE END OF SAID CYLINDER FORMING A COMPRESSOR CHAMBER IN CONJUNCTION WITH SAID CYLINDER AND A CONTIGUOUS END OF SAID PISTON, WHEREIN: SAID CYLINDER IS PROVIDED WITH A SECOND CLOSURE MEANS AT ITS OPPOSITE END FORMING AN EXPANSION CHAMBER IN CONJUNCTION WITH SAID CYLINDER AND THE END OF SAID PISTON OPPOSITE SAID CONTIGUOUS END; A CONNECTING ROD CONNECTED TO SAID PISTON, PASSING THROUGH SAID SECOND CLOSURE MEANS AND CONNECTED TO AN ACTIVATING MECHANISM; A FIRST ANNULAR CHAMBER DISPOSED ABOUT SAID CONNECTING ROD BETWEEN SAID EXPANSION CHAMBER AND SAID ACTIVATING MECHANISM; FIRST COMMUNICATION MEANS BETWEEN SAID FIRST ANNULAR CHAMBER AND SAID EXPANSION CHAMBER; A SECOND ANNULAR CHAMBER DISPOSED ABOUT SAID CONNECTING ROD BETWEEN SAID FIRST ANNULAR CHAMBER AND SAID ACTIVATING MECHANISM AND CONTAINING A SEALING LIQUID AT A PRESSURE SUFFICIENT TO PROVIDE FLUID FLOW FROM SAID SECOND ANNULAR CHAMBER TOWARD FIRST SAID ANNULAR CHAMBER DURING RECIPROCATION OF SAID CONNECTING ROD; A SEPARATOR IN COMMUNICATION WITH THE HIGH PRESSURE OUTLET OF SAID COMPRESSOR AND SAID SECOND ANNULAR CHAMBER; A FIRST