Robert Adams (UK) patented a double action only revolver in 1851, i belive this is the first but am not an expert so someone cuold prove me wrong.
Samuel Colt invented the first revolver. I'm not sure if it was a six shot but he invented the first revolver.
A good candidate may be the Starr Model 1858. This was a ball and cap revolver. With cartridge firearms, Forehand & Wadsworth made a .32 revolver inn what we would today recognize as a "double action: revolver. However, there were earlier "double action only" pepper box pistols.
A double action firearm requires you to pull back the hammer before you can fire it.
patrice revolver
Depends, A "Single Action" revolver, such as the Colt Peacemaker, carried in the old West, DID have to be cocked before each shot. A "Double Action" revolver, such as a current day Smith & Wesson, does not require that the hammer be cocked- it CAN be- or the trigger can be pulled, and the hammer will rise and fall.
Samuel Colt invented the revolver in 1836
black power or cartridge rounds? Colt made the first "practical" revolver, so this was the first commercially successful cartridge revolver. I can't say about black powder... but you should read this: http://en.wikipedia.org/wiki/Revolver <><><> The first Colt revolvers were black powder handguns. The self contained cartridge was invented later.
1873 was the date of the first one.
It was Samuel Colt. Also, it was made in1836.
The first American gun that was invented, was the Colt firearm in 1836. It was invented by Samuel Colt (1814-1862) of Utah. This was a revolver, the first rifle was in 1879 by John Moses Browning.
I do not know his first name who invented revolver? That was Cobalt
There are examples of "revolving barrel" firearms made before 1500 AD.