Device for driving dobby ring levers

A device for driving the ring levers controlling the keys of a high-speed rotary dobby, having an axis of symmetry passing through the fulcrum about which the ring levers rock and comprising a cam control mechanism, a programmer, a support for each ring lever positioned along the axis of symmetry, said support hinged on one end to the fulcrum about which said ring levers rock and rigid with respect to the relative ring lever, a rocker armature positioned perpendicular to said axis of symmetry, said support being hinged thereto at the other support end, said armature having at each of its ends that face toward the fulcrum a respective one of two engagement teeth, two dragging tracks arranged parallel to said armature hinge and having a pair of grooves formed therein in operative alignment with a respective one of said engagement teeth, an operating system controlled by said cam control mechanism for imparting a reciprocating motion perpendicular to the axis of symmetry to move said teeth in mutual opposition, and, two double-winding electromagnets arranged symmetrically about the axis of symmetry and controlled by said programmer for engaging respective rocker armature surfaces opposite to the fulcrum.