Liquid level control apparatus

Claim 1

IN AN APPARATUS HAVING MEANS CONTAINING A STREAM OF FLUID HAVING A LIQUID LEVEL TO BE CONTROLLED, AND A DEVICE FOR AUTOMATIC CONTROL OF SAID LIQUID LEVEL COMPRISING A RESPONSIVE MEMBER ADAPTED FOR MOVEMENT IN ACCORDANCE WITH SAID LIQUID LEVEL, A CONTROL VALVE, A VALVE ACTUATED BY PRESSURE AND ADAPTED TO CONTROL SAID LIQUID LEVEL SUPPLY MEANS PROVIDING ACTUATING PRESSURE CONTROL FLUID, A BLEED NOZZLE PERMITTING REGULATED DISCHARGED OF SAID PRESSURE CONTROL FLUID, A REGULATING MEMBER FOR CONTROLLING ESCAPE OF SAID PRESSURE CONTROL FLUID FROM SAID BLEED NOZZLE, DIAPHRAGM MEANS RESPONSIVE TO PRESSURE CONDITIONS IN SAID BLEED NOZZLE TO RELEASE PRESSURE TO SAID CONTROL VALVE, MEANS TRANSMITTING SUCH RELEASED PRESSURE FOR ACTUATION OF SAID CONTROL VALVE TO RESTORE THE LIQUID LEVEL TO THE DESIRED VALVE AND MEANS FOR SHUTTING OFF AND EXHAUSTING PRESSURE CONTROL FLUID FROM SAID CONTROL VALVE WHEN THE DESIRED LIQUID LEVEL HAS BEEN RESTORED; THE IMPROVEMENT COMPRISING CONNECTING MEANS ADAPTED TO TRANSMIT THE MOVEMENT OF SAID RESPONSIVE MEMBER TO SAID REGULATING MEMBER FOR MOVEMENT OF SAID REGULATING MEMBER IN ACCORDANCE WITH THE CONTROL CHARACTERISTICS OF SAID LIQUID LEVEL, SAID CONNECTING MEANS INCLUDING: AN ADJUSTABLE LEVER MEANS AND CAM MEANS ADAPTED TO BE MANUALLY ACTUATED TO THEREBY ADJUST THE EFFECTIVE LENGTH OF SAID LEVER MEANS IN ACCORDANCE WITH THE SPECIFIC GRAVITY OF THE LIQUID TO PROVIDE SUFFICIENT MOVEMENT OF SAID REGULATING MEMBER WHEN THE MOVEMENT OF SAID RESPONSIVE MEMBER IS CHANGED BY A VARIATION IN SPECIFIC GRAVITY OF LIQUID.