The lengths of the links comply with the conditions: A͞D=2A͞B and B͞C=5A͞B. Link 1 is a bent lever, turning about fixed axis D, with two guiding slots, a and b, whose axes are perpendicular to each other. Sliders 2 and 3 move along slots a and b, and are connected by turning pairs B and C to the same link. When crank AB turns about fixed axis A, point C of slider 3 travels approximately along straight line q-q which is parallel to the line of centres AD.
$1355$LG,GI$