Inlet side pressure storage and stall breakaway mechanism for single line progressive feeder manifold

Claim 1

IN A DIVISIONAL LUBRICANT FEEDER OF THE TYPE COMPRISING A PLURALITY OF CYLINDER AND PISTON FEEDER VALVES WHICH ACT SEQUENTIALLY FOR DISCHARGING LUBRICANT TO SUCCESSIVE OUTLETS AND HAVE PISTONS IN CYLINDERS WITH SEQUENTIALLY OPENING PORTS FOR SUCCESSIVE PASSAGEWAYS CONNECTED TO SUCCESSIVE OUTLETS, IN COMBINATION WITH A LUBRICANT INLET PASSAGEWAY IN ONE OF THE CYLINDER AND PISTON FEEDER VALVES, MEANS FOR AVOIDING INCORRECT MOVEMENT OF SUCH PISTONS UPON OCCURRENCE OF BACK PRESSURE COMPRISING BLOCK MEANS CONTAINING A PRESSURE-STORAGE CHAMBER CONNECTED TO THE INLET PASSAGEWAY, AND MEANS FOR OVERCOMING THE EFFECT OF FAULTY POSITIONING OF A FEEDER-VALVE PISTON COMPRISING AN AUXILIARY VALVE PISTON IN A CYLINDER FORMED IN SAID BLOCK MEANS, SAID AUXILIARY PISTON BEING ADAPTED TO MOVE IN SAID LATTER CYLINDER WITH AN INLET CONNECTION TO THE PRESSURE STORAGE CHAMBER, THE CYLINDER FOR SAID AUXILIARY VALVE PISTON HAVING A PORT ADAPTED TO BE OPEN TO SAID INLET, A BYPASS LINE CONNECTING SAID PORT TO ONE END OF ONE OF THE FEEDER-VALVE CYLINDER FOR BYPASSING PRESSURE FROM THE INPUT LINE THERETO, SAID AUXILIARY PISTON CYLINDER BEING FORMED WITH A SECOND PORT WITH A BYPASS LINE CONTROLLED BY SAID SECOND PORT BETWEEN THE OTHER END OF THE FEEDER-VALVE CYLINDER AND ONE OF THE OUTLETS, THUS THE BYPASS LINE FROM THE FIRST PORT SHORT CIRCUITS THE VALVING OF THE FEEDER-VALVE PISTON WHICH NORMALLY CONTROLS THE VALVE IN QUESTION TO ENABLE THE FEEDER VALVE IN QUESTIONS TO BE MOVED FROM ITS STALLED POSITION, THE BYPASS LINE FROM THE SECOND PORT SERVING TO OPEN THE OPPOSITE CYLINDER END OF THE FEEDER VALVE IN QUESTION TO CONNECT IT TO ITS OUTLET PASSAGE.