Link 1 turns about fixed axis A and is connected by a sliding pair to slider 8 which, in turn, is connected by turning pair E to slider 9. Slider 9 moves along the axis of link 2 which is rigidly attached to gear 4. Gear 4 turns about fixed axis D and meshes with gear 7 which turns about fixed axis B. Gear 6 is rigidly attached to gear 7 and meshes with gear 5 which is rigidly attached to link 3. Link 3 is connected by a sliding pair to slider 10 which moves along the axis of link 3 and is connected by turning pair C to slider 11. Slider 11 moves along the axis of link 1. The transmission ratio between gears 4 and 7 is i₄₇=-1 and that between gears 5 and 6 is i₅₆=-2. Point C describes portion q of a hyperbola.
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