When stylus A is moved along curve y=f(x), carriage 1 travels along axis x-x, and sliders 2 and 3 move along guides of carriage 1 in the direction of axis y-y. Guiding lever 4 is connected by turning pair D to slider 2 and by a sliding pair to slider 5. Slider 5 is connected by a turning pair to slider 3 and another turning pair to sharp-edged wheel 6. The plane of wheel 6 is always parallel to the axis of link 4. Stylus B traces the integral curve Y=f(x).
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