THE ROYAL ARTILLERY INSTITUTION. 
447 
The handle next moves forwards with the following effects :— 
1. The projection on directing arm acts on director, and moves the 
lock to the front. The lock, pressing against fork (s), drives the 
carrier to the right, and the cartridges fall on the grooves of the latter. 
2. The lock advances to the front, and the spiral springs are com¬ 
pressed by the cocks, which are kept back by the detent. The plungers 
push the cartridges into the barrels. 
3. When the cartridges are quite home, the lock stops, and the 
pin on directing arm causes the closing cam to drive the bolts ( ff ) 
into the holes in the gun-frame, so that the breech-closing is complete. 
4. The directing arm now begins to act on the detent, carrying 
it to the right. 
Each cock is released in turn from the tooth which retains it, and 
the striker pertaining to it is driven forward in consequence. As the 
first one is released, the curved arm (« o ) begins to act on the eccentric 
(A), causing the gun-frame to move in the horizontal plane. 
This movement continues while the ten barrels are being fired; 
its amplitude (as already explained, p. 446) being regulated by the 
clamping of the tenon of crank (r). 
The carriage is of iron, consisting of two brackets, on the upper 
part of which is secured a horizontal plate of iron in which the pivot 
of the gun-frame works. 
The cartridge is of brass, containing a charge of 70 grains of 
powder, and a cylindro-ogival leaden bullet with hollow base, which 
weighs 355 grains. With cap, &c., the cartridge weighs 463 grains. 
Weight . 
cwt. qrs. lbs. 
The frame, barrels, &c., with pivot. 2 2 6 
Carriage, with elevating screw. 118 
Two wheels...*. 1 0 20 
A full magazine, containing 250 cartridges . 0 0 24 
Total . 5 1 2 
The Feldl Revolver Cannon. 
(Used by the Bavarians in 1870). 
This consisted of four parallel barrels, rifled on the Werder system. 
Its practical rate of fire was about 300 rounds per minute, and a 
lateral spread of 28° could be given to it. 
lbs. 
The weight of gun was . 963 
» limber, with 6864 rounds. 1451 
This gun was drawn by four horses, 
