Cable jack comprising a frame (1), a screw (2) rotatably mounted on the frame and driven by an electric motor, a nut (4) cooperating with the screw and associated with anti-rotation means so that a rotation of the screw under the action of the motor causes an axial displacement of the nut, and two cables (10) substantially parallel coupled to the nut on the other hand thereof. The cables are connected to an anchoring member (20; 30; 40) which is interposed between the nut and the cables, the anchoring member being secured to the nut while being movable relative thereto .
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