Method and apparatus for automatic titration and control of variables

Claim 1

AN AUTOMATIC TITRATOR FOR BRINGING A BATCH OF A SAMPLE SOLUTION TO AN END POINT BY CONTROLLED ADDITION OF A REAGENT TO SUCH SOLUTION IN MEASURABLE VOLUME UNTIL A DESIRED END POINT CONDITION IS REACHED, SAID AUTOMATIC TITRATOR INCLUDING IN COMBINATION: MEANS FOR DEVELOPING AN ELECTRIC VALUE WHICH VARIES WITH THE AMOUNT OF SAID REAGENT ADDED TO SAID SAMPLE SOLUTION AND WHICH REACHES A PREDETERMINED INPUT VALUE WHEN THE END POINT IS REACHED; A VALUE IN THE PATH OF FLOW OF SAID REAGENT TO SAID SAMPLE SOLUTION, SAID VALVE INCLUDING AN ELECTRIC CONTROL MEANS FOR SHIFTING SAME SUBSTANTIALLY INSTANTANEOUSLY BETWEEN FIXED POSITIONS, SAID POSITIONS BEING RESPECTIVELY AN OPEN AND A CLOSED POSITION; AN AMPLIFIER PROVIDING AN INPUT MEANS AND AN OUTPUT MEANS; A RELAY HAVING A CONTROL WINDING CONNECTED TO SAID OUTPUT MEANS, SAID RELAY HAVING FIRST AND SECOND CONTACT MEANS ACTUATABLE UPON CHANGE IN ENERGY LEVEL SUPPLIED TO SAID CONTROL WINDING BY SAID AMPLIFIER; MEAND TO SAID OPERATIVELY CONNECTING ONE OF SAID CONTACT MEANS TO SAID ELECTRIC CONTROL MEANS OF SAID VALVE TO CONTROL THE SHIFTING OF SAID VALVE BETWEEN SAID POSITIONS IN RESAPONSE TO SUCH CHANGE IN ENERGY SUPPLIED TO SAID CONTROL WINDING; AN RC CIRCUIT AND MEANS FOR OPERATIVELY CONNECTING SAME TO THE OTHER OF SAID CONTACT MEANS TO PRODUCE A PULSING OUTPUT VARYING IN STEP WITH THE SHIFTING OF SAID VALVE BETWEEN SAID POSITIONS; AND MEANS FOR APPLYING TO SAID INPUT MEANS BOTH THE PULSING OUTPUT OF SAID RC CIRCUIT AND A POTENTIAL CHANGING WITH CHANGES IN SAID ELECTRIC VALUE TO REPEATEDLY BRING SAID AMPLIFIER PREMATURELY TO A VALVE-CLOSING ENERGY LEVEL UNTIL SAID PULSING OUTPUT RETURNS SAID AMPLIFIRER TO A VALVE-OPENINGS ENERGY LEVEL, THUS CREATING A SERIES OF CLOSINGS AND OPENINGS OF SAID VALVE SUPPLYING INCREMENTS OF REAGENT OF DECREASING VOLUME AS SAID END POINT IS APPROACHED.