Media support arrangement for rolltype filter apparatus

Claim 1

A FILTER ASSEMBLY INCLUDING A HOUSING HAVING SPACED OPPOSED PERIPHERAL SIDE WALLS PROVIDING FILTER MEDIUM SUPPORT SECTIONS AT OPPOSITE ENDS THEREOF AND DEFINING A FLOW-THROUGH GAS-TREATING SECTION INTERMEDIATE SAID SUPPORT SECTIONS WITH AT LEAST ONE OF SAID SECTIONS BEING A ROLL SUPPORT SECTION RECEIVING AND SUPPORTING A ROLL OF FILTER MATERIAL WOUND UPON A MANDREL HAVING PROJECTING SPINDLES; AN IMPROVED CONSTRUCTION OF SAID ROLL SUPPORT SECTION OF SAID HOUSING COMPRISING: A PAIR OF SUPPORT BRACKETS MOUNTED TO SAID PERIPHERAL SIDE WALLS IN SPACED ALIGNED RELATIONSHIP IN SAID ROLL SUPPORT SECTION; A PAIR OF SUBSTANTIALLY STRAIGHT LONGITUDINALLY EXTENDING BEARING ARMS, EACH HAVING SLOT MEANS AT ONE END THEREOF INTO WHICH ONE OF SAID PROJECTING SPINDLES OF SAID MANDREL NESTS AND HAVING ITS OPPOSITE END PIVOTALLY MOUNTED TO SAID SUPPORT BRACKET MEANS TO PERMIT SAID BEARING ARM TO BE POSITIONED IN AN EXTENDED POSITION NORMAL TO SAID SIDE WALL FOR ROLL SUPPORT DURING GAS TREATING OPERATIONS AND TO BE PIVOTED TO A COLLAPSE POSITION AGAINST SAID HOUSING FOR SHIPMENT AND STORAGE; AND OPPOSED DETENT LOCK MEMBERS INTEGRAL WITH AND COOPERABLE BETWEEN EACH OF SAID SUPPORT BRACKETS AND THE BEARING ARM PIVOTALLY MOUNTED THEREON AND AUTOMATICALLY RESPONSIVE TO THE RELATIVE PIVOTAL POSITION BETWEEN SAID SUPPORT BRACKET AND SAID BEARING ARM AND ASSURING THAT SAID DETENT LOCK MEMBERS ARE POSITIVELY ENGAGED IN RESILIENTLY URGED FASHION WHEN SAID BEARING ARM IS IN EXTENDED POSITION AND FULLY DISENGAGED WHEN SAID BEARING ARM IS IN COLLAPSED POSITION.