Henri Roux’s 1816 Patent: Improvements to Pauly’s Gun Design

Henri Roux's patent from May 5, 1816, offers a critical improvement on the early firearms designed by Pauly. The main innovation addresses the operational difficulties caused by Pauly's design, where pistons extending into the breech made the firearms hard to open unless half-cocked precisely. Roux's solution prevents the pistons from going all the way into the breech; instead, they stop and hit a primer dropped into specially designed holes, marked as 'P' in the patent drawings.

This design change enhances the reliability and ease of use, simplifying the operation for soldiers with limited experience. Roux's modification represents an important step in making firearms more user-friendly and effective in military contexts. Additionally, this patent supports the claim that Pauly was producing percussion guns prior to this patent.

The patent includes detailed illustrations and descriptions of the modified piston mechanism and the primer holes. Roux's work is a testament to the ongoing ...


To access the Jean Samuel Pauly Archives, please log in or become a member of the Lefaucheux Museum. Members enjoy exclusive access to detailed historical archives, rare documents, and in-depth insights into the pioneering innovations of Jean Samuel Pauly and his influence on Casimir Lefaucheux. Join our community to explore these invaluable resources and support the preservation of firearm history.