Elisha Collier

Elisha Haydon Collier (1788–1856) of Boston, USA, invented a flintlock revolver around 1814. His weapon is one of the earliest true revolvers, in contrast to the earlier pepperboxes which were multi-barreled guns. Collier's revolver was not self rotating but it was self-priming: a compartment automatically released gunpowder into the pan when the hammer was cocked.