3 
attached to the carriage by two steel arms. These arms give the elevation, their 
lower extremities being set in motion by an hydraulic piston horizontally in the 
slides of the carriage. 
The gun is loaded at the breech at any angle, naturally therefore at the eleva¬ 
tion required for the work in hand. For this purpose the loading platform pivots 
round the breech trunnions. It is moved to a horizontal position by hydraulic 
power to receive the projectile brought up on a truck, it is then brought into line 
with the gun and the projectile is pushed into the bore. Meanwhile the breech 
piece—an interrupted screw—rests on a frame above the trunnions. As soon as 
the projectile is “ home ” the frame descends and the breech-piece is pushed into 
its place by hydraulic pistons, and the gun is “ ready.” 
