Pitch control for aircraft

Claim 1

IN AN AIRCRAFT HAVING CONTROL SURFACES FOR EFFECTING PITCH MOVEMENT ABOUT THE TRANSVERSE AXIS OF THE AIRCRAFT, PITCH CONTROL MEANS, INCLUDING A GYROSCOPE COMPRISING A GIMBAL CAGE PIVOTALLY SUPPORTED WITH ITS AXIS OF PIVOT SUBSTANTIALLY PERPENDICULAR TO THE LONGITUDINAL AXIS OF SAID AIRCRAFT, A GYRO WHEEL SPINNINGLY MOUNTED IN SAID GIMBAL CAGE WITH ITS AXIS OF SPIN SUBSTANTIALLY PARALLEL TO SAID AIRCRAFT LONGITUDINAL AXIS, A PLATE FIXED TO SAID GIMBAL CAGE FOR PIVOTING THEREWITH, SAID PLATE BEING SUBSTANTIALLY PARALLEL TO SAID AIRCRAFT LONGITUDINAL AXIS, PIN MEANS CONNECTED TO AND DEPDNING BELOW SAID PLATE DUSPOSED RADIALLY OUTWARD FROM SAID GIMBAL PIVOT AXIS ALONG A RADIUS OF SAID PLATE WHICH IS SUBSTANTIALLY PARALLEL TO SAID AIRCRAFT TRANSVERSE AXIS, WEIGHT MEANS CONNECTED TO SAID PLATE RADIALLY OUTWARD FROM SAID PIVOT AXIS AND SAID PIN MEANS ,THE VERTICAL CENTER LINE OF SAID WEIGHT MEANS DISPOSED SUBSTANTIALLY ON SAID PLATE RADIUS WHEREBY AND OF SAID PLATE RESPONSIVE TO PITCH TILT OF SAID AIRCRAFT URGES SAID SEIGHT TO MOVE AROUND SAID PIVOT AXIS UNDER THE FORCE OF GRAVITY, SAID PITCH TILT CAUSING PRECESSION OF SAID GYROSCOPE IN THE DIRECTION OF WEIGHT MOVEMENT, OPERATIONAL MEANS DRIVENLY COUPLED TO SAID PIN MEANS SAID OPERATIONAL MEANS COMPRISING AN AIR VALVE INCLUDING A ROTATABLE ROTOR PARALLE OT SAID PLATE, VACUUM OPERATED MEANS COMMUNICATED WITH SAID AIR VALVE AND CONNECTED TO SAID CONTROL SURFACES, A SOURCE OF VACUUM COMMUNICATED TO SAID AIR VALVE, ROTATION OF SAID ROTOR RESPECTIVELY EFFECTING COMMUNICATION OF SAID VACUUM OPERATED MEANS WITH SAID SOURCE OF VACUUM TO OPERATE SAID CONTROL SURFACES AND CORRECT PITCH CURVATURE OF SAID AIRCRAFT MOVEMENT OF SAID OPERATIONAL MEANS ROTOR THEREBY CORRECTING FLIGHT CURVATURE AND SAID WEIGHT CONTINUING SUCH MOVEMENT TO EFFECT CORRECTION OF FLIGHT LEVEL.