EXPLANATION OF THE PLATE
Figure 1. represents the lock affixed to a British light six-pounder, as seen from the right side.
Fig.2. Detonating tube.
3. lock and bolt attached to the cascabel
4. Back of the block and bolt, with suspending pin, the hammer being upright.
5. Front of the Block.
6. Ground plan of the block and bolt.
7. Pulley case from above.
8. Hammer from ditto.
9. Ditto from the right side.
10. Ditto from below.
11. Bridge from above.
12. Back of the bridge.
13. Bridge from below.
14. Turnscrew and nut.