Zero governor

Claim 1

IN A ZERO GOVERNOR, IN COMBINATION, A LOWER VALVE CASING PROVIDING AN INTERNAL VALVE SPACE, A HORIZONTAL WALL DIVIDING THE SPACE AND ESTABLISHING INLET AND OUTLET CHAMBERS RESPECTIVELY, INLET AND OUTLET PORTS IN SAID CASING COMMUNICATING WITH SAID INLET AND OUTLET CHAMBERS RESPECTIVELY, THERE BEING A VALVE PORT IN SAID WALL ESTABLISHING COMMUNICATION BETWEEN THE CHAMBERS AND PROVIDING A VALVE SEAT, A VALVE ELEMENT UNDERLYING AND COOPERATING WITH SAID SEAT AND MOVABLE AT RIGHT ANGLES TO THE WALL DOWNWARDLY AWAY FROM THE SEAT TO AN OPEN POSITION AND UPWARDLY TOWARD THE SEAT TO A CLOSED POSITION, AN UPPER DIAPHRAGM CASING DIRECTLY ABOVE THE LOWER VALVE CASING AND HAVING A MOVABLE DIAPHRAGM THEREIN SUBJECT ON ONE SIDE TO THE DEGREE OF PRESSURE IN THE OUTLET CHAMBER, SAID VALVE AND DIAPHRAGM CHAMBERS BEING PROVIDED WITH REGISTERING OPENINGS THEREIN, A VALVE STEM CONNECTING SAID VALVE ELEMENT AND DIAPHRAGM WHEREBY THE VALVE ELEMENT IS CONSTRIANED TO FOLLOW THE DEFLECTING MOVEMENTS OF THE DIAPHRAGM, A SEALING DIAPHRAGM THROUGH WHICH THE VALVE STEM PROJECTS AND EXTENDING ACROSS SAID REGISTERING OPENINGS IN SEALING RELATIONSHIP, AND MEANS FOR COUNTERBALANCING THE WEIGHT OF THE DIAPHRAGM, VALVE STEM AND VALVE ELEMENT, SAID COUNTERBALANCING MEANS COMPRISING A FIRST CLASS LEVER DISPOSED WITHIN THE DIAPHRAGM CASING, MEANS CARRIED BY SAID DIAPHRAGM CASING ESTABLISHING A FULCRUM POINT FOR SAID LEVER, SAID LEVER INCLUDING A RELATIVELY SHORT LEVER ARM AND A RELATIVELY LONG LEVER ARM, MEANS ESTABLISHING A SUPPORTING CONNECTION BETWEEN THE DISTAL END OF THE LONG LEVER ARM AND SAID VALVE STEM, A SPRING REACTION SUPPORT OVERLYING THE DISTAL END OF SAID SHORT LEVER ARM, A COMPRESSION SPRING INTERPOSED BETWEEN SAID REACTION SUPPORT AND THE DISTAL END OF SAID SHORT ARM AND SERVING NORMALLY AND AT ALL TIMES DURING OPERATION OF THE ZERO GOVERNOR TO APPLY A DOWNWARD THRUST TO THE SHORT LEVER ARM AND A CONSEQUENT UPWARD THRUST ON SAID VALVE STEM TO BIAS THE VALVE TOWARD ITS CLOSED POSITION, THE MOMENT OF FORCE EXERTED BY SAID COMPRESSION SPRING ON THE DISTAL END OF SAID SHORT ARM BY SAID COMPRESSION SPRING BEING PRECISELY EQUAL TO THE MOMENT OF FORCE EXERTED BY SAID SUPPORTING CONNECTION ON THE DISTAL END OF SAID LONG ARM.