Metering and cutoff devices

Claim 1

A METERING AND CUTOFF DEVICE FOR FLUIDS COMPRISING A CAUSING, A PASSAGEWAY FOR FLUID THROUGH SAID CASING, AN HYDRAULIC MOTOR WITHIN SAID CASING ADAPTED TO BE DRIVEN BY THE PASSAGE OF FLUID THERETHROUGH IN PROPORTION TO THE FLOW OF FLUID, SPEED REDUCTION MEANS CONNECTING SAID MOTOR WITH A GEAR ON A SHAFT WHICH EXTENDS THROUGH A PORTION OF SAID CASING, A KNOB AND POINTED LOCATED ON SAID SHAFT EXTERNALLY OF SAID CASING, A CAM ON SAID SHAFT WITHIN SAID CASING, A VALVE IN SAID PASSAGEWAY ADAPTED IN ONE POSITION TO SHUT OFF THE FLOW OF FLUID THROUGH SAID CASING, A CAM FOLLOWER HAVING AN ACTUATING CONNECTION WITH SAID VALVE, SAID CAM HAVING A NOTCH TO PERMIT SAID CAM FOLLOWER TO MOVE TO A POSITION IN WHICH SAID VALVE WILL BE CLOSED WHEN SAID POINTER REACHES A PREDETERMINED POSITION, AND MEANS FOR RENDERING THE METERING AND CUTOFF DEVICE INDEFINITELY INACTIVE WHEN SAID POINTER OCCUPIES ANOTHER POSITION, SAID MEANS COMPRISING AN INTERRUPTION IN THE TEETH OF SAID GEAR SUCH THAT WHEN THE POINTER OCCUPIES THE LAST MENTIONED POSITION, SAID GEAR WILL BE OUT OF DRIVEN CONNECTION WITH SAID SEED REDUCING MEANS, AND SAID CAM FOLLOWER WILL LIE AGAINST A PORTION OF SAID CAM WHEREBY IT WILL BE MAINTAINED IN THE VALVE OPEN-POSITION.