Arrangement for feeding a reagent in amounts proportional to the output of water to be treated by said reagent

Claim 1

AN APPARATUS FOR DISTRIBUTING A MIXTURE OF A LIQUID AND OF A SUSPENSION THEREIN WITH A CONTROLLED AMOUNT OF THE SUSPENSION IN THE LIQUID, COMPRISING A FIRST TANK, FIRST FEEDING MEANS FOR FEEDING LIQUID HAVING A CONSTANT PROPORTION OF SUSPENSION THEREIN TO SAID FIRST TANK, MEANS FOR MAINTAINING THE LIQUID SURFACE IN THE FIRST TANK TO A FIRST PREDETERMINED LEVEL, AN INTERMEDIATE TANK, A FIRST LIQUID PASSAGEWAY CONNECTING LOWER PORTIONS OF SAID FIRST TANK AND OF SAID INTERMEDIATE TANK, A SECOND TANK, SECOND FEEDING MEANS FOR FEEDING CLEAR LIQUID TO SAID SECOND TANK, AN OVERFLOW PIPE IN SAID SECOND TANK HAVING AN UPPER OVERFLOW PORTION LOCATED AT A SECOND PREDETERMINED LEVEL HIGHER THAN SAID FIRST PREDETERMINED LEVEL, A SECOND LIQUID PASSAGEWAY CONNECTING UPPER PORTIONS OF SAID INTERMEDIATE TANK AND OF SAID PIPE, SAID SECOND LIQUID PASSAGEWAY BEING AT A LEVEL LOWER THAN SAID FIRST PREDETERMINED LEVEL, A SLEEVE MEMBER SPACEDLY SURROUNDING SAID OVERFLOW PIPE, THIRD FEEDING MEANS FOR FEEDING CLEAR LIQUID TO SAID SLEEVE MEMBER, A CONSTANT FLOW OUTLET ORIFICE FORMED AT A LOWER END PORTION OF SAID SLEEVE MEMBER, SAID OVERFLOW PIPE HAVING A LOWER END OUTLET LOCATED ABOVE SAID ORIFICE AND HAVING A LARGER SECTION THAN SAID ORIFICE, AND CONTROL MEANS FOR VARYING THE LIQUID SURFACES IN SAID SECOND TANK THEREBY ADJUSTING THE AMOUNT OF THE SUSPENSION IN THE LIQUID DISCHARGE THROUGH SAID CONSTANT FLOW ORIFICE.

Claim 2

AN APPARATUS FOR DISTRIBUTING A MIXTURE OF A LIQUID AND OF A SUSPENSION THEREIN WITH A CONTROLLED AMOUNT OF THE SUSPENSION IN THE LIQUID, COMPRISING A FIRST TANK, FIRST FEEDING MEANS FOR FEEDING LIQUID HAVING A CONSTANT PROPORTION OF SUSPENSION THEREIN TO SAID FIRST TANK, MEANS FOR MAINTAINING THE LIQUID SURFACE IN THE FIRST TANK TO A FIRST PREDETERMINED LEVEL, AN INTERMEDIATE TANK, A FIRST LIQUID PASSAGEWAY CONNECTING LOWER PORTIONS OF SAID FIRST TANK AND OF SAID INTERMEDIATE TANK, A SECOND TANK, SECOND FEEDING MEANS FOR FEEDING CLEAR LIQUID TO SAID SECOND TANK, AN OVERFLOW PIPE IN SAID SECOND TANK HAVING AN UPPER OVERFLOW PORTION LOCATED AT A SECOND PREDETERMINED LEVEL HIGHER THAN SAID FIRST PREDETERMINED LEVEL, A SECOND LIQUID PASSAGEWAY CONNECTING UPPER PORTIONS OF SAID INTERMEDIATE TANK AND OF SAID PIPE, SAID SECOND LIQUID PASSAGEWAY BEING AT A LEVEL LOWER THAN SAID FIRST PREDETERMINED LEVEL, A SLEEVE MEMBER SPACEDLY SURROUNDING SAID OVERFLOW PIPE, THIRD FEEDING MEANS FOR FEEDING CLEAR LIQUID TO SAID SLEEVE MEMBER, A CONSTANT FLOW OUTLET ORIFICE FORMED AT A LOWER END PORTION OF SAID SLEEVE MEMBER, SAID OVERFLOW PIPE HAVING A LOWER END OUTLET LOCATED ABOVE SAID ORIFICE AND HAVING A LARGER SECTION THAN SAID ORIFICE, AND CONTROL MEANS FOR VARYING THE LIQUID SURFACES IN SAID SECOND TANK THEREBY ADJUSTING THE AMOUNT OF THE SUSPENSION IN THE LIQUID DISCHARGE THROUGH SAID CONSTANT FLOW ORIFICE.