Blade arrangement for water wheel - has fixed blade base portions concave towards incoming water

摘要

The water-wheel has two or more similar blades in the same plane on a driving shaft. Each blade (11) has a fixed and closed base portion (17) concave towards the incoming water. It can be convex at the rear and of V-section with flat walls (21,22) joined together at the apex (23). Hinging extensions (18) can be mounted on the walls, swinging apart on facing the incoming water. ADVANTAGE - Minimum resistance to water when returning upstream.