The lengths of the links comply with the conditions: A͞M=A͞H=I and A͞B=B͞K=K͞C=C͞A=a. Crank 1 turns about fixed axis 0. Sliders 2 and 3 move along fixed guides p-p. When crank 1 turns about axis 0, point K describes an ellipse with a major semiaxis equal to length 0͞A of crank 1 and a minor semiaxis equal to the length of the crank multiplied by the factor m: m=l-2*(a/l).
$1620$SC,Ge$