This mechanism comprises of a fan-pinion, a rack, and a frame with slot. The input crank is connected to the fan-pinion and the rack mates with the fan-pinion in forms of the internal gear pair. On the other hand, the rack is also served as a slider that can slide inside the slot on the frame. Hence, when the crank is continuously rotating, the fan-pinion will guide the rack reciprocally translating in the slot.