Filters employing a fibrous paper roll

Claim 1

IN A FILTER OF THE TYPE ADAPTED TO EMPLOY A ROLL OF FIBROUS TISSUE HAVING A CENTRAL OPENING AS A FILTERING MEDIUM, A CYLINDRICAL CASING HAVING AN INTERNAL DIAMETER SUBSTANTIALLY CONFORMING TO THE EXTERNAL DIAMETER OF SAID ROLL, A CLOSURE FOR SAID CASING, A BULKHEAD SPACED FROM ONE END OF SAID CASING TO DEFINE A CHAMBER, A HOLLOW CENTRAL ARBOR ADAPTED TO RECEIVE SAID ROLL AT THE CENTRAL OPENING THEREOF FOR PLACEMENT THEREON AGAINST SAID BULKHEAD, A PLURALITY OF KNIFE MEANS EXTENDING FROM SAID ARBOR FOR SPLITTING SAID ROLL AT SAID CENTRAL OPENING, A PLURALITY OF OPENINGS IN SAID HOLLOW ARBOR BETWEEN SAID KNIFE MEANS, A PLURALITY OF HOLLOW PROBES SUPPORTED BY SAID BULKHEAD AND HAVING THE INTERIOR THEREOF IN COMMUNICATION WITH SAID CHAMBER, EACH OF SAID PROBES HAVING AT LEAST ONE OPENING THEREIN WHEREBY THE FILTERING ACTION TAKES PLACE IN DIRECTIONS NORMAL TO THE LONGITUDINAL AXIS OF SAID ROLL.