The teat-fire is an obsolete type of metallic cartridge used in firearms, where the bottom of the casing had a nipple located in the center which is filled with the priming compound. This type of cartridge was loaded from the front of a revolver cylinder, instead of from the rear. This was advantageous, as it allowed the rear of the revolver cylinder to only need a small hole through which the hammer could reach to strike the nipple and fire the cartridge, as opposed to a rimfire cartridge where the entire rim had to be exposed at the rear of the revolver cylinder. This was a .32 caliber pistol cartridge designed by Daniel Moore and manufactured by Moore and his partner David Williamson for their Pocket Revolver that was produced under both the Moore and National Arms marques by the National Arms Company of Brooklyn, New York in the mid-19th century.