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Claim 1

IN A LIQUID FILTER APPARATUS HAVING A CONTAINER, MEANS SUBDIVIDING SAID CONTAINER INTO A LOWER FILTER CHAMBER AND AN UPPER OUTLET CHAMBER, A PLURALITY OF HOLLOW FILTER ELEMENTS AND MEANS SECURING SAID ELEMENTS IN SAID CONTAINER TO DEPEND INTO SAID LOWER CHAMBER, SAID ELEMENTS EACH HAVING AN UPPER OPEN END EXPOSED TO SAID UPPER CHAMBER, SAID ELEMENTS BEING ARRANGED IN RADIALLY ALIGNED ROWS ABOUT A COMMON CENTER AND THE CORRESPONDING ELEMENTS IN SEPARATE ROWS BEING EQUALLY SPACED FROM SAID CENTER, A LIQUID DISCHARGE HEAD ROTATABLY MOUNTED WITHIN SAID OUTLET CHAMBER, SAID HEAD COMPRISING A PLURALITY OF RADIAL PIPES, A VERTICAL CONDUIT TO WHICH SAID PIPES ARE SECURED AND MEANS JOURNALLING SAID CONDUIT FOR ROTATION ABOUT AN AXIS COINCIDENT WITH SAID COMMON CENTER, EACH OF SAID PIPES HAVING A PLURALITY OF DOWNWARDLY DIRECTED LIQUID JET DISCHARGE MEANS RADIALLY SPACED APART ALONG THE LENGTH THEREOF SO AS TO REGISTER WITH THE ELEMENTS THEREBENEATH, MEANS FOR SUPPLYING LIQUID TO SAID CONDUIT FOR FLOW THERETHROUGH AND THROUGH SAID PIPES TO ISSUE FROM SAID JETS DOWNWARDLY INTO SAID ELEMENTS, AND MEANS FOR INTERMITTENTLY ARCUATELY ADVANCING SAID HEAD INTO SEQUENTIAL REGISTRY WITH SAID ROWS OF ELEMENTS.