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WATT FOUR-BAR APPROXIMATE STRAIGHT-LINE MECHANISM

The lengths of the links of four-bar linkage ABCD comply with the conditions: B͞C=1.05A͞B, D͞C= 0.55A͞B and B͞E= 0.36A͞B. When link 1 turns about fixed axis A, point E of link 2 describes a path of which portion q-q is approximately a straight line.
$647$LW,GI$