Automatic diluting apparatus

Claim 1

AUTOMATIC DILUTING APPARATUS COMPRISING, A CLOSED VESEL HAVING AN INLET PORT AND AN OUTLET PORT AND A PISTON FREELY MOVABLE BETWEEN SAID PORTS IN OPPOSITE DCIRECTIONS FOR SWEEPING OUT A KNOWN VOLUME OF FLUID FROM THE VESSEL THROUGH EITHER ONE OF SAID PORTS DEPENDING UPON THE DIRECTION OF MOVEMENT OF THE PISTON, A FLUID CONTROL VALVE HAVING INDIVIDUAL FLUID CONDUIT CONNECTIONS WITH EACH OF SAID PORTS, A FLUID DISPENSING TUBE ADAPTED TO BE CONNECTED TO A SOURCE OF DILUENT UNDER PRESSURE, SAID VALVE BEING SELECTIVELY OPERABLE TO CONNECT EITHER ONE OF SAID CONDUIT CONNECTIONS TO EITHER ONE OF SAID DISPENSING AND DELIVERY TUBES WITH THE OTHER OF SAID CONDUIT CONNECTIONS CONNECTED CONCURRENTLY TO THE OTHER OF SAID DISPENSING AND DELIVERY TUBES, AND MEANS FOR SELECTIVELY INTRODUCING A VOLUMETRIC VARIABLE INTO SAID APPARATUS, SAID MEANS COMPRISING A SECOND VESSEL FILLED WITH FLUID CONNECTED TO SAID FLUID DISPENSING TUBE, A PLUNGER MOVABLE AXIALLY IN SAID SECOND VESSEL AND HAVING AN END PORTION THEREIN, SAID PLUNGER BEING MOVABLE FROM A START POSITION A PREDETERMINED DISTANCE, BEARING MEANS FOR SLIDABLY RECEIVING SAID PLUNGER THEREIN AND ACTUATOR MEANS TO CONTROL THE MOVEMENT OF SAID PLUNGER FROM SAID START POSTION, SAID PREDETERMINED DISTANCE, WHEREUPON A PORTION OF SAID END PORTION IS WITHDRAWN FROM INSIDE SAID SECOND VESSEL TO INTRODUCE A VOLUMETRIC VARIABLE INTO SAID KAPPARATUS EQUAL TO THE VOLUME OF SAID END JPORTION WITHDRAWN, SAID VALVE OPERABLE THEREAFTER AUTOMATICALLY TO CAUSE DISCHARGE OF SAID KNOWN VOLUME OF DILUTED SOLUTION THROUGH SAID DISCHARGE OUTLET.