Revolver

—In fire-arms, is a weapon which, by means of a revolving breech, or revolving barrels, can be made to fire more than once without reloading. The invention is very far from new, specimens, with even the present system of rotation, being still in existence, which were manufactured at the beginning of the 17th century. Probably the first revolver to suggest itself was one in which several barrels were mounted on an axis, and made to revolve by the action of the trigger, so that their powder-pans came succe ively under the action of the lock. This principle was never entirely abandoned, and in the reign of George IV. was produced a pistol called the “Mariette,” which had from 4 to 24 small barrels bored in a solid ma of metal, made to revolve as the trigger was drawn back. At close quarters, such a pistol would doubtle have been useful; but its great weight and cumbrous mechanism rendered aim extremely unsteady. Contemporaneously from the first with the revolving barrels, went the formation of a revolving chamber or breech, pierced with several cylindrical apertures to receive the charges. Being made to revolve, each motion brought a chamber into line with the one barrel, common to all, whereupon the weapon was ready for use. Numerous patents for this principle have been taken out, including one by the celebrated Marquis of Worcester in 1661. Various improvements were made, especially in the mode of causing revolution; an American patented such a weapon in the United States and England about 1818. In 1835, Col. Samuel Colt brought to a conclusion experiments of some years’ standing, and patented his world-renowned Colt’s revolver, which was a great advance on all previous attempts, and is substantially still in use. The fame attached to Colt’s revolvers renders them so well known as to require but little introduction nece ary. This make is now extensively used in the United States, and indeed in almost every country of the world, and seems not to lose favor anywhere. The barrel is rifle-bored. The lever-ramrod renders wadding or patch unnece ary, and secures the charge against moisture, or becoming loose by rough handling or hard riding. The hammer, when at full cock, forms the sight by which to take aim, and is readily raised at full cock by the thumb, with one hand. The movements of the revolving chamber and hammer are ingeniously arranged and combined. The breech, containing six cylindrical cells for holding the powder and ball, moves one-sixth of a revolution at a time; it can only be fired when the chamber and the barrel are in a direct line. The base of the cylinder being cut externally into a circular ratchet of six teeth (the lever which moves the ratchet being attached to the hammer); as the hammer is raised in the act of cocking, the cylinder is made to revolve, and to revolve in one direction only; while the hammer is falling the chamber is firmly held in position by a lever fitted for the purpose; when the hammer is raised the lever is removed, and the chamber is released. So long as the hammer remains at half-cock, the chamber is free and can be loaded at pleasure. Col. Colt has improved on this patent. Revolvers made by Remington, Smith & We on, Daw, Adams & Dean, and others, are mostly on the same principle as the Colt.