Originally Posted by c3shooter
There was also the Allen Lipfire. It was like a rimfire, but only had a rim on one small section. Difficult to make, impossible to use in a repeater. Scarcer than an honest poltician now.
The lipfire, along with the teatfire and cupfire, were short-lived attempts to circumvent Rollin White's patent. They died as soon as those patents expired, only the pinfire lasting any length of time as it was somewhat popular in Europe.