MODEL 8 - May 5, 1864 - Patent 16152
The following improvement is the famous variation known under the name MODEL 8 was deposited at the patent-office on May 5, 1864. Model 8 is definitely larger than its predecessors. The cam of blocking of the cylinder functions like a swing; it is worked at an end of a claw which takes in the barrel and other side it is taken in a notch in the foot of the hammer.
In this manner the cylinder is blocked firmly while the hammer falls down.