1776 - American Revolution. 1807 - Percussion-detonating principle patented. 1825 ca. - Percussion-cap guns are in general use. 1830 - The back action lock appears. 1835 - The first Colt revolver.
A neat portable apparatus, that can be carried in the pocket, for placing caps on gun nipples, has been invented by Russel Frisbee, of Middletown, Conn., who has taken measures to secure a patent.