The lengths of the links comply with the conditions: B͞C=E͞D, B͞G=E͞F and C͞D=B͞E=G͞F. At tached to slider-crank linkage ABE are links 4, 5, 6 and 7. Figures BEFG and BCDE are parallelograms. The motion of links 4 and 5 is similar to that of link 3. Thus, for example, point D describes a connecting- rod curve similar to that described by point H of link 3, the similarity factor being k=A͞C/A͞B.
$1531$SC,ML$