Fig. 42.
Fig. 43.
There are several small holes in the head, through which a portion of the gas of the exploded powder-charge enters, drives forward the balls, and assists in disrupting the case.
Total weight of a round, 11 lbs. 10 oz.
This projectile is painted black.
Fig. 44.
Shrapnel.—The Frankford Arsenal shrapnel ([Fig. 44]) weighs 1310/16 lbs. Exclusive of filling it consists of three parts, viz., head (d), body (a), and base (b). The head is made of cast iron, bored and threaded to receive the fuze, and contains a powder-chamber which is lacquered to prevent danger of premature ignition by friction. The body is made of lap-welded wrought-iron or low-steel tubing, and is weakened for fracture by circular and longitudinal grooves on the inside. It contains 162 hardened lead balls, ½ inch in diameter, which are assembled in circular layers and held in position by cast-iron separators, which increase the effect of explosion by furnishing additional fragments. The base is made of cast iron threaded to screw into the cylindrical case, and is so formed as to provide a support for the copper band to prevent deformation of the case at this point from shock of discharge, c is the rotating band. This projectile is painted, body black, head vermilion.
| Total weight, ready for firing | 13 lbs. 10 oz. |
| Total number of balls and individual pieces | 201 |
| Bursting-charge | 3 ounces |