Liquid contacting apparatus with automatic heat control

Claim 1

IN A REGULATING SYSTEM FOR A CONTACTING TOWER INCLUDING A SERIES OF CONTACTING ZONES, A CONTAINER FOR HOLDING LIQUIDS TO BE VAPORIZED, AND A STEAM LINE FOR HEATING THE LIQUID IN SAID CONTAINER, A FLUID PRESSURE OPERATED VALVE IN SAID STEAM LINE FOR REGULATING THE VAPORIZATION OF LIQUID IN SAID CONTAINER THEREBY TO CHANGE THE SPECIFIC GRAVITY OF LIQUIDS IN SAID CONTACTING ZONES, A SOURCE OF FLUID FOR ACTUATING SAID VALVE, A LIQUID RECEPTACLE HAVING OVERFLOW MEANS THEREON FOR MAINTAINING A CONSTANT VOLUME OF LIQUID THEREIN, WEIGHING MECHANISM COMPRISING A MEMBER CONNECTED TO SAID RECEPTACLE AND MOVABLE IN ACCORDANCE WITH CHANGES IN WEIGHT OF SAID RECEPTACLE, A SAMPLE PIPE CONNECTED TO ONE OF SAID CONTACTING ZONE AND TO SAID LIQUID RECEPTACLE, A SECOND PIPE CONNECTING SAID OVERFLOW MEANS TO ANOTHER OF SAID SERIES OF CONTACTING ZONES SO THAT SAID RECEPTACLE IS CONTINUOUSLY FILLED WITH LIQUID FROM A SELECTED CONTACTING ZONE AND WHEREBY SAID MEMBER MOVES IN RESPONSE TO