252 APPENDIX. 



Chain or Swivel. — A small piece of steel fastened to 

 the heck 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 Hamtner. — 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. 



Hairuner-Spring. — The pin on which the tail of the 

 hammer is moved. 



Head of the Hammer. — See Face of the Hamtner. 



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



Heel-Plate Screws. — Screws which secure the heel- 

 plate to the stock. 



