Constant Tension From Spring 29 May 2017, 13:00 Sorry, your browser doesn't support embedded videos, but don't worry, you can download it and watch it with your favorite video player! Spring constant tension for large movement of the green lever is gained by providing a movable spring mount on the blue lever that is controlled by the yellow stationary cam. « previous mechanism Geneva Mechanism for Reverse Deg. Rotation next mechanism » Escapement load comments Please enable JavaScript to view the comments.