De Brame cannon-revolver Detail of the breech

This reduced-scale model, a sixth of its original size, is a cannon-revolver designed by Frenchman J.-A. de Brame in 1861 in New York.
This cannon-revolver has a six-shot cylinder. The cannon-revolver is mounted on a carriage made from wood and iron. A folding bi-section buckle is attached to the carriage. It is pierced with two holes, which allow the cannon to pass through and subsequently allow for the upper chamber of the cylinder to be directed.
In parallel to a proposal submitted to the unionist United States government, J.-A. de Brame had this reduced-scale model manufactured and sent to France for Napoleon III, in the hopes that he would attract the Emperor's attention along with that of his staff. Unfortunately, after having been studied by the artillery commission, his proposal was deemed unreliable and wasn't pursued any further.