The lengths of the links comply with the conditions: A͞B=C͞D and B͞C=A͞D. Rotation is transmitted between two offset shafts A and B by a threefold repeated parallel-crank linkage ABCD. Disks 1 and 2 have three pairs of freely rotating rollers a. The radius of the rollers equals A͞B/2. Shafts A and B have equal angular velocity.
$798$LW,C$