The lengths of the links comply with the conditions: B͞C=4.28A͞B, C͞E=4.86A͞B, B͞E=8.4A͞B, C͞D=2.14A͞B, A͞D=4.55A͞B, A͞F=7A͞B and D͞F=3.32A͞B. When point B of crank 1 travels along the part of a circle indicated by a heavy continuous line, point E of connecting rod 2 describes portion y-y of its path that is shown by a heavy continuous line and approximates a straight line passing through point F. During continuous rotation of crank 1 about fixed axis A, slotted link 3 oscillates about fixed axis F with a dwell during the travel of point E along portion y-y of its path.
$1351$LG,D$