Triple Inverse Parallelogram

A third similar inverse parallelogram is connected to a double inverse parallelogram.

Similar ratio for this case is 2.

The red crank makes 3 revolutions while the violet one makes 2 and the green makes 1.

Further similar connections allow getting transmission ratio of 4, 5, 6 …

The mechanism consists of only bars and revolution joints.

There may be difficulty in arranging the crank bearing supports.