Gatling gun

A hand-cranked, multi-barrel firearm invented by Richard Gatling in 1861. Its rotating barrels allow rapid firing while distributing heat and mechanical wear.

Rotating-barrel machine gun: A machine gun that cycles multiple barrels around an axis to fire in sequence. The Gatling gun established this distinctive way to sustain rapid fire.
Richard Gatling: An American inventor who patented the Gatling gun in 1862. His design and patent gave the weapon its name and defined its early form.
Siege warfare: Military operations aimed at capturing fortified places through encirclement, bombardment, or assault. Gatling guns were particularly suited to defending or attacking fixed positions.
Maxim gun: A recoil-operated machine gun invented by Hiram Maxim in the 1880s. It replaced manual cranking with recoil-powered operation and became a more fully automatic weapon.
Hand crank: A manually turned handle that transfers rotary motion to a mechanism. The operator's crank drove the gun's barrel rotation and firing cycle.
American Civil War: A war fought in the United States from 1861 to 1865 between the Union and Confederacy. The gun was invented during the conflict, though it saw limited wartime use.
United States Army: The land warfare service of the United States military. The Army adopted the weapon after the Civil War and used it in later campaigns.
Hotchkiss revolving cannon: A nineteenth-century multi-barrel cannon that used a hand crank to fire rapidly. It shared the Gatling's rotating-barrel principle but fired larger-caliber ammunition.
Cam: A shaped rotating part that converts rotary motion into controlled movement of another component. Cams coordinated loading, firing, extraction, and ejection as the barrels turned.
Industrial Revolution: A period of major economic and technological transformation driven by mechanization and industrial production. Precision manufacturing made its complex, interchangeable parts practical.

Linked from 6 pages