Gear 1 meshes with fixed gear rack 7 and is connected by turning pair A to slider 8 which moves along guides b-b. Carrier a is rigidly attached to gear 1 and is connected by turning pairs B and C to gears 3 and 4. Crank d is rigidly attached to gear 4 and is connected by turning pair E to slider 5 which moves along slot e-e of slotted link 6. Link 6 slides in guide f belonging to slider 8. Gear 3 meshes with gear 4 and with gear 2 which rotates together with gear 1, being rigidly attached to it, about axis A of slider 8. When gear 1 rotates, it rolls along rack 7, moving slider 8 along axis x-x. Through gears 3 and 4, gear 2 transmits motion to slider 5 which moves slotted link 6 along axis y-y. Any point K of link 6 traces curve q of the sine type. Curves with different parameters can be obtained by installing other change gears in place of gear 2. When the gear is changed, the stud of intermediate gear 3 is adjusted and clamped in the required position along circular slot g of carrier a.
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