Liquid wiper packings for reciprocating rods

Claim 1

A PACKING STRUCTURE FOR USE IN COMPRESSORS, PUMPS AND OTHER MACHINES HAVING "WET" AND "DRY" SIDES AND A RECIPROCATING PISTON ROD EXTENDING FROM THE WET SIDE TO THE DRY SIDE, COMPRISING: MEANS FORMING A PACKING CHAMBER HAVING AN END WALL WHICH SEPARATES THAT CHAMBER FROM THE DRY SIDE OF THE MACHINE, SAID END WALL PRESENTING, WITHIN SAID CHAMBER, A FLUSH SURFACE THROUGH WHICH SAID PISTON ROD EXTENDS; AND A PLURALITY OF ROD ENCIRCLING PACKING RINGS LOCATED WITHIN SAID CHAMBER, SAID RINGS INCLUDING, ADJACENT SAID END WALL, A SPRING ENCOMPASSED PACKING RING OF THE SECTIONAL TYPE HAVING A FLAT FLUSH FACE ON ONE SIDE CORRESPONDING TO THE WET SIDE OF THE MACHINE AND, ON ITS OPPOSITE SIDE, A FLAT RADIALLY GROOVED FACE IN ENGAGEMENT WITH SAID FLUSH SURFACE OF SAID END WALL AND OPERATIVE, IN SUCH ENGAGEMENT, TO ESTABLISH COMMUNICATION, THROUGH ITS RADIAL GROOVES, BETWEEN THE INNER PERIPHERY OF THE RING AND THE OUTER PERIPHERY THEREOF FOR CONDUCTING TO SAID OUTER PERIPHERY LIQUID WHICH IS SQUEEZED FROM BETWEEN SAID RINGS AND SAID FLUSH SURFACE.