Controller for use in gas lifting fluid from wells

Claim 1

IN A DEVICE FOR INTERMITTENTLY SUPPLYING FLUID UNDERPRESSURE TO A PRESSURE RESPONSIVE VALVE CONTROLLING FLOW OF FLUID UNDER PRESSURE INTO A WELL PIPE, A CLOCK; A CONTROL PLATE ROTATABLE BY THE CLOCK; DISENGAGEABLE CLUTCH MEANS BETWEEN THE CLOCK AND THE CONTROL PLATE; PRESSURE FLUID ACTUATED MEANS TO ENGAGE THE CLUTCH PLATE WITH THE CONTROL PLATE; A PRESSURE FLUID SUPPLY CONDUIT CONNECTED TO THE FLUID ACTUATED MEANS; FIRST VALVE MEANS IN THE SUPPLY LINE CONTROLLING FLOW THERETHROUGH TO THE FLUID ACTUATED MEANS; MEANS ADJUSTABLE ABOUT THE CONTROL PLATE MOVABLE INTO ENGAGEMENT WITH THE FIRST VALVE MEANS TO CLOSE SAME AND DISCONTINUE THE SUPPLY OF PRESSURE FLUID TO THE PRESSURE FLUID ACTUATED MEANS; MEANS ON THE CONTROL PLATE ENGAGEABLE WITH THE ADJUSTABLE MEANS TO MOVE SAME INTO ENGAGEMENT WITH THE FIRST VALVE MEANS, A SECOND PRESSURE FLUID SUPPLY CONDUIT CONNECTED TO THE PRESSURE RESPONSIVE VALVE; SECOND VALVE MEANS IN THE SECOND PRESSURE FLUID SUPPLY CONDUIT; OTHER MEANS ON THE CONTROL PLATE ENGAGEABLE WITH THE SECOND VALVE MEANS TO OPEN SAME AND ALLOW SUPPLY OF PRESSURE FLUID TO THE PRESENCE RESPONSIVE VALVE TO OPEN SAME AND ALLOW INJECTION OF GAS UNDER PRESSURE INTO THE WELL PIPE.