Revolver many European gun-makers, in numerous designs and configurations. However, these weapons were difficult to use, complicated and prohibitively expensive to make, and as such they were not widely distributed. In 1836, an American, Samuel Colt patented the mechanism which led to the widespread use of the revolver, the mechanically indexing cylinder. According to Samuel Colt, he came up with the idea for the revolver while at sea, inspired by the capstan, which had a ratchet and pawl mechanism on it, a version of which was used in his guns to rotate the cylinder by cocking the hammer. This provided a
Colt House Revolver them a recognizable "bird's-head" grip. These features (spur trigger, "birds-head" grips, etc.) were common on many small pistols and revolvers during that era, such as the classic 2-shot "derringer" pistol. Finally, both models, House and Cloverleaf, were chambered with .41 caliber rimfire cartridges, available in both long and short sizes. The main differences between the two models were the following: The Colt New Line (1873) inherited the general shape of the Colt House: a bird's head grip and a solid spur-trigger frame. Colt House Revolver The Colt House Revolver (also called, in its alternate 4-round capacity model, the Cloverleaf) was