Francis water turbine animation. Unlike the Pelton and Kaplan-style turbines, the Francis turbine is an inward flow reaction turbine that combines radial and axial flow.
1935 Westinghouse turbo generator - photo
Archimedes screw hydroelectric generator - GIF
Hydroelectric turbines from the 1920s - photo
Set of large Russian tools for hydro turbine - photo
Machine shop powered by Pelton water wheel