Water power engine (original) (raw)

A water power engine includes prime movers driven by water and which may be classified under three categories: 1. * Water pressure motors, having a piston and cylinder with inlet and outlet valves: their action is that analogous of a steam- or gas-engine with water as the working fluid – see water engine 2. * Water wheels 3. * Turbines, deriving their energy from high velocity jet of jets (the impulse machine), or from water supplied under pressure and passing through the vanes of a runner which is thereby caused to rotate (the reaction type)