Actuation mechanism of flexible display hand driven by a clockwork movement

The actuation mechanism of a flexible hand to which a clockwork movement applies a first angular rotation θ1, the flexible hand comprising a first drive barrel and a second drive barrel connected to a tip of the flexible hand by means of a first flexible arm and a second flexible arm respectively, the first drive barrel being provided with a first toothing and the second drive barrel being provided with a second toothing, the first and second drive barrels being spaced apart from one another when the flexible hand is in an unstressed free state, an operating position in which the flexible hand has a defined shape and length being a stressed position in which the first drive barrel is mounted at a defined first prestressed angle, and the second drive barrel is mounted at a defined second prestressed angle in opposite direction to the first drive barrel, the first drive barrel and the second drive barrel being arranged such that the first toothing of the first drive barrel is engaged with the second toothing of the second drive barrel in the stressed position of the flexible hand, the flexible hand being arranged so as to change the shape and length in a desired manner, when the angular position of the second drive barrel is varied by pivoting relative to the first drive barrel, the clockwork movement applying the first angular rotation θ1 to a cam against which a feeler-spindle bears, the feeler-spindle pivoting by an angle of rotation φ from the effect of the first angular rotation θ1 applied by the clockwork movement to the cam, the pivoting of the feeler-spindle being applied to one of the first or second drive barrels, whichever of the first or second drive barrels to which the pivoting of the feeler-spindle is applied applying the pivoting in opposite direction to the other drive barrel, which causes the radial deformation of the flexible hand.