Charles Brown

Charles Brown was a German-born machinist who, according to his own accounting, worked at the problem of perpetual motion beginning in 1862, ultimately devising what he called Brown's Eureka Self-Motor, a type of gravity motor, and established the Eureka Self-Motor Company at Boston, Massachusetts in 1884 to promote it. It is unclear how long this concern lasted, but Brown himself seems to have departed Boston not long thereafter, and nothing more has been found regarding the business nor the invention.