Chemical feed and blowdown system

Claim 1

IN A COOLING WATER APPARATUS, A COOLING TOWER HAVING A SUMP FROM WHICH WATER IS PASSED TO THE WORK TO BE COOLED, A SOURCE OF WATER, A FIRST INPUT FLOWLINE FROM SAID SOURCE OF WATER TO SAID SUMP, A FIRST VALVE ON SAID FIRST INPUT FLOWLINE, A BY-PASS LINE FROM SAID FIRST FLOWLINE AFTER SAID FIRST VALVE AND BEFORE SAID SUMP, A THROTTLING VALVE IN SAID BY-PASS LINE OPERATIVE TO CONTROL THE FLOW THERETHROUGH RELATIVE TO THE FLOW THROUGH SAID FIRST INPUT FLOWLINE PAST THE SAID FIRST VALVE, MEANS FOR REGULATING THE PH OF THE WATER IN SAID BY-PASS FLOWLINE, SECOND INPUT LINE MEANS FOR PASSING SAID PH CONTROLLED WATER TO SAID SUMP, AN OUTPUT FLOWLINE FROM SAID SUMP, A SECOND VALVE AND A SECOND THROTTLING VALVE ON SAID OUTPUT FLOWLINE, MEANS CONNECTED TO SAID FIRST AND SECOND VALVES FOR OPENING AND CLOSING THEM AS THE WATER LEVEL IN SAID SUMP VARIES WHEREBY TO REPLENISH SAID SUMP WITH RAW WATER AND SIMULTANEOUSLY WITHDRAW MINERAL CONCENTRATED WATER THEREFROM, THE FLOW CAPACITY OF THE OUTPUT LINE PROPORTIONED BY MEANS OF THE THROTTLING VALVE THEREON RELATIVE TO THE FLOW CAPACITY OF THE FIRST AND SECOND INPUT LINES SO AS TO WITHDRAW SUCH REGULATED QUANTITIES OF WATER THEREFROM AS TO TEND TO CONTROL WITHIN LIMITED RANGES THE INSOLUBLE CONSTITUENTS IN THE WATER AND THE SUMP.