A base (13), the base transmission having a driven shaft (11) rotatably supported by (11) (10) is disclosed. Furthermore the device (10), a shaft (11) internal gear fixed to surrounding and and base (13) and (17), a shaft extending arms are fixed and then the (11) in the generally radial (14) , an arm (14) a planetary gear rotatably mounted and which meshes with the internal gear (17) to (16), the planet gear (16) rotates, the planetary gear shaft is rotated ( 16), a connecting rod attached to the extension portion fixed to the planetary gear (16) (20) (19), so that the planet gear is rotated by means for driving the connecting rod (19) and a connecting rod (19), this connecting rod (19) is a planetary gear (19), mounted in a predetermined position spaced by the length of the extension (20) from the planetary gear (16) and connecting rod (19) adapted to the angular frequency across the main axis of the shaft (11).