Water treating apparatus with agentadding dispenser

Claim 1

IN WATER TREATING APPARATUS IN WHICH AN ION-EXCHANGE BED IS REGENERATED PERIODICALLY WITH BRINE, A BRINE TANK, MEANS FOR WITHDRAWING BRINE FROM THE TANK FOR REGENERATION AND THEN REPLACING IT WITH WATER TO CAUSE THE BRINE IN THE TANK TO PERIODICALLY FALL FROM AN UPPER LEVEL TO A LOWER LEVEL AND AN ADJUSTABLE DISPENSER FOR AUTOMATICALLY ADDITING PREDETERMINED QUANTITIES OF A LIQUID AGENT TO THE BRINE TANK, SAID DISPENSER COMPRISING A CLOSED CONTAINER FOR SAID AGENT, MEANS MOUNTING THE CONTAINER IN THE UPPER PART OF THE TANK, A DISCHARE TUBE EXTENDING LATERALLY OUT OF THE CONTAINER, THE INNER END OF THE TUBE BEING LOCATED NEAR THE BOTTOM OF THE CONTAINER AND THE OUTER END OF THE TUBE BEING POSITIONED TO DISCHARGE INTO THE TANK ABOVE THE BRINE LEVEL THEREIN, A BODY OF LIQUID AGENT IN SAID CONTAINER VARYING FROM A LEVEL BELOW THE TOP OF THE CONTAINER TO A LEVEL ABOVE THE INNER END OF THE DISCHARGE TUBE, THE PORTION OF THE DISCHARGE TUBE OUTSIDE OF THE CONTAINER BEING PROVIDED WITH A REVERSE BEND THAT EXTENDS UPWARDLY AT LEAST AS HIGH AS THE TOP OF THE CONTAINER, AN AIR TUBE EXTENDING OUT OF THE CONTAINER, THE INNER END OF THE AIR TUBE BEING LOCATED ABOVE THE LIQUID AGENT LEVEL IN THE CONTAINER AT ALL TIMES, A VERTICAL STANDPIPE MOUNTED IN THE TANK WITH ITS UPPER END CONNECTED TO THE OUTER END OF SAID AIR TUBE, AND A DOWNWARDLY OPENING SLEEVE ENCIRCLING THE LOWER END PORTION OF THE STANDPIPE AND EXTENDING BELOW IT, THE UPPER END OF THE SLEEVE BEING IN SEALING ENGAGEMENT WITH THE STANDPIPE AND SLIDINGLY MOUNTED THEREON FOR VERTICAL ADJUSTMENT, AND THE LOWER ENDS OF THE SLEEVE AND STANDPIPE BEING LOCATED BETWEEN THE UPPER AND LOWER LEVELS OF THE BRINE IN THE TANK, WHEREBY WATER RISING AROUND AND IN THE SLEEVE TO REPLACE BRINE WITHDRAWN FROM THE TANK WILL FORCE A PREDETERMINED VOLUME OF AIR UP THROUGH THE STANDPIPE AND INTO SAID CONTAINER TO FORCE SOME OF THE LIQUID AGENT OUT OF THE CONTAINER THROUGH SAID DISCHARGE TUBE INTO THE TANK.