and contracts were drawn up to produce 50 units. A patent numbered 36,448 was also issued on 16 September 1862. The battery was never officially accepted into service, yet it saw action at the Siege of Port Hudson, Fort Wagner, Fort Sumter and Siege of Petersburg as well as the Battle of Cold Harbor. A final test of the gun was conducted at the Washington Arsenal in August 1864, with a report issued in 1866 indicating that the gun was reliable and performed well during the testing. As a result, an additional five guns were ordered, but advances in firearms technology soon rendered the weapon obsolete. References External links Early machine guns Multi-barrel machine guns American Civil War weapons