Pelton, Lester Allen

Pelton, Lester Allen

(1829–1918) inventor, engineer; born in Vermillion, Ohio. During the California gold rush (1849), Pelton devised an improved undershot waterwheel powered by a jet of water striking pairs of hemispherical cups. Adaptations of Pelton wheels were used in the generation of hydroelectric power.
The Cambridge Dictionary of American Biography, by John S. Bowman. Copyright © Cambridge University Press 1995. Reproduced with permission.