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.
The Maxim gun has been called "the weapon most associated with imperial conquest" by historian Martin Gilbert, and was heavily used by colonial powers during the "Scramble for Africa". Afterwards, Maxim guns also saw extensive usage by different armies during the Russo-Japanese War, the First and Second World Wars, as well as in contemporary conflicts.
The Maxim gun was greatly influential in the development of machine guns, and it has multiple variants and derivatives.
The Maxim gun featured one of the earliest recoil-operated firing systems in history. Energy from recoil acting on the breech block is used to eject each spent cartridge and insert the next one. Maxim's earliest designs used a 360-degree rotating cam to reverse the movement of the block, but this was later simplified to a toggle lock. This made it vastly more efficient and less labor-intensive than previous rapid-firing guns, such as the manually cranked Mitrailleuse, Gatling, Gardner, or Nordenfelt.
The Maxim gun was water cooled, allowing it to sustain its rate of fire far longer than air-cooled guns. The extra weight and complexity this added, however, made it heavier and less flexible in use.
Trials demonstrated that the Maxim could fire 600 rounds per minute. Compared to modern machine guns, the Maxim was heavy, bulky, and awkward. A lone soldier could fire the weapon, but it was usually operated by a team of men, usually 4 to 6. Apart from the gunner, other crew were needed to speed reload, spot targets, and carry and ready ammunition and water. Several men were needed to move or mount the heavy weapon.
Maxim established the Maxim Gun Company with financing from la, son of steel entrepreneur Edward Vickers. A blue plaque on the Factory where Maxim invented and produced the gun is to be found in Hatton Garden at the junction with Clerkenwell Road in London.