Maxim gun
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The Maxim gun is a recoil-operated machine gun invented in 1884 by Hiram Stevens Maxim. It was the first fully automatic machine gun in the world.
Maxim machine gun at Georgian National Museum.
Air-cooled, Extra Light Maxim M1895.
Illustration of the Maxim Gun in Brockhaus and Efron Encyclopedic Dictionary, 1905
A large-bore Maxim on the USS Vixen c. 1898
Gatling gun
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The Gatling gun is a rapid-firing multiple-barrel firearm invented in 1861 by Richard Jordan Gatling of North Carolina. It is an early machine gun and a forerunner of the modern electric motor-driven
1876 Gatling gun kept at Fort Laramie National Historic Site
Mitrailleuse Gatling modèle APX 1895
A British 1865 Gatling gun at Firepower – The Royal Artillery Museum
Patent drawing for R. J. Gatling's "battery gun", 9 May 1865