Link 1, turning about fixed axis A, is connected by a sliding pair to slider 3. Slider 3 is connected by turning pair D to slider 2 which moves along fixed guides p-p. When link 1 turns about axis A, points B and C of slider located at equal distances from point D, describe the two branches q-q of a conchoid of Nicomedes with the equation (x-a)²(x²+y²)=b²x² where a = constant dimension of the mechanism, b =D͞B=C͞D.
$1151$LG,Ge$