50 NAMES OF THE PRINCIPAL PARTS OF A GUN. 



MAIN-SPRING. That by which tumbler is worked with cock. 

 NIPPLE (or, Pivot). Protuberance on which strikes the cock of a 



detonating gun, which is ignited by copper caps. 

 NIPPLE-WRENCH. Pocket-machine, to take out the nipple, if re- 

 quired. 



PIPES. Bands to receive ramrod. 

 RIB. Piece, or strip, on which slides the ramrod. 

 SCROLL-GUARD. An extra bow, continued from the guard, to steady 



the hand. 

 SCEAR. Part which catches the tumbler, for half or whole cock, 



and which, being pushed up by trigger, lets off the gun. 

 SCEAR-SPRING. The spring, which presses the scear against, and 



holds it in, the notches of tumbler, for either the half or whole 



cock. 



SIDE-NAIL. Screw which fastens on the locks, 

 SIGHT. Little bit of gold or silver, to bring up to the object, when 



taking a deliberate aim. 



SPRING-CRAMP. A small instrument for dissecting locks. 

 STRIKER. The moveable head to the best sort of cock, which strikes 



a copper cap. 



TAIL. The arch, shoulder, or neck of a hammer. 

 TOP-PIECE. Groove, or elevation, along which is directed the line 



of aim. 



TRIGGER-PLATE. Plate in which the triggers work. 

 TRIGGER-SPRINGS. Small springs, to keep triggers constantly 



pressing close to scear. (Invented and always used by Mr. Joseph 



Man ton.) 

 TUMBLER. The moveable centre-piece of a lock, which falls with, 



and is subservient to the cock. 



TUMBLER-SCREW. The little screw which fastens on the cock. 

 VENT-HOLE. A small hole at the side of the breeching, in a de- 



tonater, to let out the gas, and lessen the recoil. 

 WORM. Screw, at the end of ramrod, for drawing out the wadding. 



*** When you find a lock rub, or bind, be sure and see that it 

 does not do so in consequence of some little screw or other having 

 worked loose, before you attempt easing the part of the stock where 

 the friction takes place. 



