APPENDIX. 



Chain of Swivel. A small piece of steel fastened to 

 the neck of the tumbler to receive the end of the main- 

 spring. 



Chamber or Cup. The space or opening in the centre 

 of the breech, designed to hold a portion of the charge of 

 powder. 



Cock, Hammer, or Striker. The arm of the lock, 

 which, being freed by the pressure of the finger on the 

 trigger, falls on the nipple, and explodes the cap. 



Cross-Pin or False-Breech Screw. The screw which, 

 passing through the trigger-plate and stock, secures the 

 break-off, or false breeching. 



Cup. See Chamber. 



Escutcheons. Pieces of metal set in the stock through 

 which the bolts pass, so as to prevent the wearing or chaf- 

 ing of the wood work. Also the metal shield or thumb- 

 piece on which the crest or name is engraved. 



Face or Head of the Hammer. That portion of the 

 cock surrounded with a rim, guard, or nose, which, on its 

 fall, comes in contact with the nipple and explodes the 

 cap. 



False Breeching. See Break-off. 



False-Breech Screw. See Cross-Pin. 



Guard. Curved plate of metal to protect the trigger. 



Guard-Screws. The screws by which the guard is 

 fastened to the stock. 



Hammer. See Cock. 



Hammer Bridle. That portion of the lock in which 

 the tail of the hammer works. 



Hammer-Spring. The pin on which the tail of the 

 hammer is moved. 



Head of the Hammer. See Face of the Hammer. 



Heel-Plate. The plate with which the butt is tipped. 



Heel-Plate Screws. Screws which secure the heel- 

 plate to the stock. 



