Cartridge case. A hollow cylinder shaped to fit the bore. A container for the propelling charge.
Charge.
(a) Propelling. A quantity of powder used in the bore to generate the gases which propel the projectile from the gun.
(b) Bursting. A quantity of powder used in shrapnel to strip off the head of the projectile and to force out the balls.
(c) Explosive. The matter used in a shell to detonate it at the end of its flight.
Cradle. In general, that part of the carriage which houses the recoil and counter-recoil mechanisms.
Elevating Mechanism. The device used to elevate the gun through a vertical arc in order to give the gun an elevation corresponding to the desired range at which the piece is to be fired.
Fire Control Equipment. Those instruments used to compute firing data, observe and correct the fire, such as B. C. Telescopes, Aiming Circles, Range Finders, etc.
Firing Mechanism. A device located in the breechblock for exploding the primer and thus causing the ignition of the powder charge.
Fuze. That part of the round which is fastened to the point or to the base of the projectile and causes the latter to be detonated or exploded near the time or the place desired.