StakeOut
US Veteran
On February 25,1836 Samuel Colt Patented his First U.S. Revolver
The First U.S. Colt Revolver Patent
The First U.S. Colt Revolver Patent
The Colt patent covered principally a mechanism for revolving the cylinder to advance the next chamber by pulling back the hammer, i.e., mechanically interconnecting the hammer and the cylinder by means of a pawl, and then locking the cylinder in place with a bolt during firing. The basic principle of a revolving firearm using a cylinder with multiple chambers existed long before Sam Colt, and quite a few of them were made, most notably the Collier revolver which saw limited military use with the British Army. Except those earlier examples required that the cylinder be turned from chamber to chamber by hand as a separate operation. I don't know how the cylinder was locked into position on those earlier pieces, probably by a spring detent or possibly some separately-manipulated locking mechanism.
In any event, Colt did not invent the revolver, as many incorrectly believe, and that is not what his patent claims. Colt instead invented an "improvement" to an existing revolving firearm design, which is why the patent is titled the way it is.