Tethered airplane toy

Claim 1

AN AMUSEMENT DEVICE COMPRISING: A FREELY ROTATABLE VERTICALLY DISPOSED DRIVE SHAFT FIXED AGAINST LATERAL MOVEMENT; A ROD PIVOTALLY CARRIED ON FULCRUM MEANS PIVOTED INTERMEDIATE ITS ENDS ON SAID SHAFT FOR PIVOTAL MOVEMENT IN A VERTICAL PLANE; MODEL MEANS CARRIED BY ONE END OF SAID ROD AT A LOCATION ABOVE THE PIVOT POINT; BALANCE WEIGHT MEANS CARRIED BY THE OTHER END OF SAID ROD AT A LOCATION ABOVE THE FULCRUM MEANS, ALL OF SAID MEANS COACTING TO EFFECT A SINGLE PIVOTAL POSITION OF SAID ROD AT WHICH SAID BALANCE WEIGHT MEANS AND SAID MODEL MEANS BALANCE EACH OTHER BOTH WHEN SAID SHAFT IS AR REST AND WHEN SAID SHAFT IS ROTATING, ALL OF SAID MEANS UNBALANCING SAID ROD AT ALL OTHER PIVOTAL POSITIONS WHEN SAID SHAFT IS AT REST AND TENDING TO PIVOT SAID ROD AWAY FROM SAID SINGLE BALANCE POSITION WHEN DISPLACED FROM SAID POSITION, WHEREBY SAID MODEL MEANS WHEN DISPOSED BELOW SAID POSITION DURING ROTATION OF SAID SHAFT SWINGS UP WITH AN INCREASE IN ROTATIONAL SPEED OF SAID SHAFT AND WHEN DISPOSED ABOVE SAID POSITION DURING ROTATION OF SAID SHAFT SWINGS DOWN WITH AN INCREASE IN SPEED AND WHEREBY SWINGING MOVEMENT OF SAID ROD THROUGH SAID POSITION IN EITHER DIRECTION IS EFFECTED ONLY BY ACCELERATION OR DECELERATION OF THE ROTATION OF SAID SHAFT; A DRIVE SYSTEM FOR CONTROLLABLY ACCELERATING AND CONTROLLABLY DECELERATING SAID DRIVE SHAFT BY AN OPERATOR, SAID DRIVE SYSTEM INCLUDING A COMPRESSIBLE PNEUMATIC CHAMBER REMOTE FROM SAID DRIVE SHAFT, AND EXPANSIBLE CHAMBER, A TUBE CONNECTING SAID CHAMBERS WHEREBY COMPRESSION AND RELEASE OF SAID COMPRESSIBLE CHAMBER BY THE OPERATOR EXPANDS AND CONTRACTS SAID EXPANSIBLE CHAMBER, POWER TRANSMITTING MEANS FOR CONVERTING EXPANSION AND CONTRACTION OF SAID EXPANSIBLE CHAMBER TO TORQUE ON SAID DRIVE SHAFT AND FOR RELEASING SAID SHAFT FOR FREE ROTATION WHEN SAID COMPRESSIBLE CHAMBER IS RELEASED BY THE OPERATOR, AND BRAKE MEANS RESPONSIVE TO FULL COMPRESSION OF SAID COMPRESSIBLE CHAMBER FOR DECREASING THE ROTATIONAL SPEED OF SAID SHAFT WHEREBY ALTERNATE COMPRESSION AND RELEASE OF SAID COMPRESSIBLE CHAMBER BY THE OPERATOR CAUSES SAID SHAFT TO ROTATE AT A SPEED DEPENDENT ON THE RATE OF COMPRESSION AND RELEASE AND WHEREBY A PROLONGED AND SUBSTANTIALLY COMPLETE COMPRESSION OF SAID COMPRESSIBLE CHAMBER APPLIED BRAKING FORCE TO SAID SHAFT TO RAPIDLY DECREASE THE ROTATIONAL SPEED OF SAID SHAFT.