Safety parachute for aircraft

Claim 1

IN AN AIRPLANE THE COMBINATION OF A FUSELAGE AND AIRFOILS, SAID FUSELAGE HAVING A COMPARTMENT WITHIN THE UPPER PORTION THEREOF, SAID COMPARTMENT CONTAINING IN RETRACTED POSITION A PARACHUTE DEVICE COMPRISING A PAIR OF CANOPIES, SAID COMPARTMENT HAVING A PAIR OF UPWARDLY OPENING DOORS TO PERMIT MOVEMENT OF SAID PARACHUTE DEVICE THERETHROUGH INTO AN OPERATIVE POSITION, SAID PARACHUTE DEVICE FURTHER COMPRISING A SHAFT SUPPORTED PIVOTALLY FREE ABOUT ITS ONE END WITHIN SAID COMPARTMENT FOR MOVEMENT BETWEEN AN INOPERATIVE HORIZONTAL POSITION WITHIN SAID COMPARTMENT AND AN OPERATIVE VERTICAL POSITION ABOVE SAID FUSELAGE, A PLURALITY OF RADIALLY EXTENDABLE RODS PIVOTALLY ATTACHED AT THEIR ONE ENDS TO THE UPPER END OF SAID SHAFT, SAID RODS SUPPORTING ONE OF SAID CANOPIES, SAID SHAFT BEING COMPRISED OF AN UPPER AND LOWER ELEMENT ATTACHED TOGETHER, MEANS FOR DETACHING SAID SHAFT ELEMENTS, SAID CANOPY SUPPORTED ON SAID RODS HAVING A PLURALITY OF SHROUDS AFFIXED TO THE PERIPHERY THEREOF, SAID SHROUDS BEING AFFIXED AT THEIR OTHER ENDS TO SAID FUSELAGE, THE OTHER OF SAID CANOPIES BEING AFFIXED AT ITS PERIPHERY TO SAID SHROUDS BETWEEN SAID FIRST CANOPY AND SAID FUSELAGE, SAID SHAFT ELEMENTS EACH COMPRISING A HOLLOW TUBE HAVING A CENTRAL CHAMBER, THE UPPER OF SAID ELEMENTS HAVING AN INWARD FLANGE AT ITS LOWERMOST END SLIDABLY RECEIVABLE WITHIN THE UPPER END OF THE LOWER OF SAID ELEMENTS, THE UPPER END OF SAID FLANGE HAVING A SQUARE SHOULDER ON THE INNER SIDE OF SAID UPPER ELEMENT, A LOCKING MECHANISM AFFIXED WITHIN THE LOWER ELEMENT CHAMBER, SAID LOCKING MECHANISM COMPRISING A PLURALITY OF CIRCUMFERENTIALLY SPACED APART GENERALLY VERTICAL ARMS ATTACHED PIVOTALLY FREE AT THEIR LOWER ENDS TO THE WALL OF SAID LOWER CHAMBER, THE UPPER ENDS OF SAID ARMS EACH HAVING A RADIALLY OUTWARDLY EXTENDING HOOK FOR ENGAGEMENT OVER THE SAID SQUARE SHOULDER OF SAID UPPER ELEMENT, SPRING MEANS BETWEEN SAID UPPER ENDS NORMALLY URGING SAID HOOKS INTO SAID ENGAGEMENT OVER SAID SQUARE SHOULDER, A LINK ATTACHED PIVOTALLY FREE TO EACH OF SAID VERTICAL ARMS BETWEEN THE SAID LOWER AND UPPER ENDS, SAID LINKS EXTENDING RADIALLY INWARD WITHIN THE SAID CHAMBER, AND THE RADIALLY INWARDLY CONVERGED ENDS OF SAID LINKS BEING ATTACHED TO A COMMON CABLE EXTENDING LONGITUDINALLY DOWNWARD THROUGH THE LOWER PORTION OF SAID LOWER ELEMENT CHAMBER TO A MOTOR-DRIVEN WINCH ON SAID FUSELAGE FOR SELECTIVELY PULLING SAID CABLE WHEN SAID SHAFT ELEMENTS ARE TO BE DETACHED.