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DOUBLE PARALLEL-CRANK MECHANISM WITH THREE CRANKS

The lengths of the links comply with the conditions: A͞B=D͞C=E͞F=A͞H=D͞K=E͞G and B͞C=C͞F =A͞D=D͞E. Rotation of driving crank 1 is transmitted through connecting rods 2 and 3 to cranks 4 and 5. Planes a-a and b-b of the connecting rods have a circular translational motion.
$627$LW,PC$