Spring Toggle Mechanism 06 January 2020, 19:30 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 toggle mechanism enables to reach end positions of a lever quickly and holds it there firmly. The violet double crank represents manual action. « previous mechanism Spatial Parallelogram Mechanism next mechanism » Man-Powered Grain Mill load comments Please enable JavaScript to view the comments.