Automatic aircraft rudder trimmer in the event of failure of one turbine engine driving said aircraft

Claim 1

IN AN AUTOMATIC TRIMMING DEVICE OF THE TYPE EFFECTING AUTOMATIC CORRECTION OF TURNING TENDENCIES OF A MULTIPLE-ENGINE AIRCRAFT UNDER ASYMETRIC POWER CONDITIONS BY APPLYING COMPENSATING FORCES TO THE RUDDER OF SAID AIRCRAFT, WHICH AIRCRAFT IS PROVIDED WITH A RUDDER-BAR CONNECTED TO SAID RUDDER THROUGH A CONTROL LINKAGE AND IS DRIVEN BY AT LEAST ONE PAIR OF TURBINE ENGINES MOUNTED SYMMETRICALLY WITH REFERENCE TO THE AIRCRAFT LONGITUDINAL PLANE OF SYMMETRY AND EACH ONE OF WHICH HAS A COMPRESSOR; THE IMPROVEMENT WHICH COMPRISES AT LEAST ONE JACK CASING, AT LEAST ONE PISTON RECIPROCALLY MOVABLE IN EACH JACK CASING, TWO RODS PROJECTING ON EITHER SIDE OF EACH JACK CASING AND SUBJECTING TO SAID RECIPROCATING MOTION, THE CHAMBERS IN EACH JACK CASING BEING ARRANGED IN OPPOSITE DIRECTIONS RELATIVE TO THE TRANSVERSE SYMMETRY PLANE OF SAID JACK CASING, TWO PIPES RESPECTIVELY TAPPED OFF THE TWO COMPRESSOR OUTLETS OF EACH PAIR OF TURBINE ENGINES AND RESPECTIVELY CONNECTED TO TWO OPPOSITE CHAMBERS OF THE SAME CASING, MEANS FOR CONNECTING THE TWO RODS OF EACH JACK TO THE CONTROL LINKAGE SO AS TO DEFLECT THE RUDDER TOWARDS THAT SIDE WHICH IS OPPOSITE THAT ON WHICH A FAILING TURBINE ENGINE IS MOUNTED, A THREE-WAY COCK HAVING TWO OF ITS WAYS CONNECTED INTO EACH PIPE AND THE THIRD VENTED, AND, FOR ALL THE PIPES, INTERCONNECTED ACTUATING LINKS FOR THE THREE-WAY COCKS, A TRANSMISSION SYSTEM CONNECTED TO SAID LINKS, AND AN OPERATING LEVER PLACED WITHIN REACH OF THE AIRCRAFT PILOT AND COUPLED TO SAID TRANSMISSION SYSTEM.