The dream of William Uotts: In 1782 William Uotts, the plumber from Bristol (England), invented a way of production of fraction in a dream. Grains then cast on the single in forms, or cut from a thick lead wire and then ran in in a rotating drum to approximately roundish form, or, at last, poured the melted lead from small height into a barrel with water - tear-shaped pellets turned out. The rain from spherical drops of water dreamed the mechanic. Having woken up, he understood that it is necessary to pour the melted lead from big height in a special tower with the water pool below. By the way of a drop the lead become almost ideally spherical. Since then fraction do so.