“Hill’s Patent” Stanley Bull-Dog Revolver: Blatant Patent Theft in 1878

The Stanley Bull-Dog revolver is an English-production revolver which is marked as being “Hill’s Patent”. The gun uses an interesting simultaneous ejection system similar to the Fagnus – which one assume was the subject of Hill’s aforementioned patent. The guns were made in a variety of configurations (blue, nickeled, various barrel lengths and calibers, etc).

Hill’s actual patent (number 3645 of 1878) is actually a provisional patent relating to the lockwork that turns the cylinder. In fact, the ejection system used on the guns was invented by a Belgian named Jean Mathieu Deprez-Joassart five years earlier in 1873. Deprez-Joassart did patent the mechanism, and Hill appears to have simply claimed the system as his own and convinced a British gunmaker to pay him royalties for guns made with it.

Thanks to Select Fire Weaponry of Waukesha, Wisconsin for loaning me this revolver to film.

Thanks also to Littleton.Be for use of photos of Deprez-Joassart revolvers – you can see their whole page on the man here:



    • And the assassin thought “I’m a REAL Republican!! Surely the Republican Party will just pull strings, so I get out of jail free and into a cushy desk job in Washington after that Goody Two-Shoes Garfield kicks the bucket!”

      • Garfield is fine (The orange cat) he meant a 19th c U.S president; who was shot by an “Office seeker” a disapointed one, clearly; apparently “To the victor belong the spoils” type thing; er… Well a new country really, you are going to get these issues as oppose in a long standing “Tongue in bumhole” established type patronage system such as in, the country said new country broke away from a bit back; not that long ago, really. Sooo… Shit happens.

Leave a Reply

Your email address will not be published.