The lengths of the links of slider-crank linkage ABC comply with the conditions: B͞C=1.37A͞B and B͞D=2.27A͞B. When crank 1 turns about fixed axis A, point D of connecting rod 2 describes a path of which a certain portion approximates straight line q-q, perpendicular to axis Ax of motion of slider 3.
$1543$SC,GI$