William Greener
Encyclopedia
William Greener was an English
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 inventor and gunmaker. He developed a self-expanding bullet
Bullet
A bullet is a projectile propelled by a firearm, sling, or air gun. Bullets do not normally contain explosives, but damage the intended target by impact and penetration...

 in 1835, an electric lamp in 1846 (patent specification 11076 of that year) some 33 years before Thomas Edison
Thomas Edison
Thomas Alva Edison was an American inventor and businessman. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-lasting, practical electric light bulb. In addition, he created the world’s first industrial...

's patent in 1879. William Greener also invented the percussion system for firing cannon, made improvements to the miner's safety lamp and won a prize for designing a mechanical device by which four gates at railway/road level crossings could be opened or closed simultaneously. He also invented a self-righting lifeboat, which was exhibited with a rocket gun and, several of his famous percussion muzzle loading shotguns and rifles at the Great Exhibition of 1851
The Great Exhibition
The Great Exhibition of the Works of Industry of all Nations or The Great Exhibition, sometimes referred to as the Crystal Palace Exhibition in reference to the temporary structure in which it was held, was an international exhibition that took place in Hyde Park, London, from 1 May to 15 October...

, where he was awarded a gold medal.

The Greener bullet had a hollow base which was fitted with a plug which forced the base of the bullet to expand and catch the rifling. This allowed the bullet to fit easily into the muzzle of the rifle
Rifle
A rifle is a firearm designed to be fired from the shoulder, with a barrel that has a helical groove or pattern of grooves cut into the barrel walls. The raised areas of the rifling are called "lands," which make contact with the projectile , imparting spin around an axis corresponding to the...

 so that it could be easily loaded, but then expand upon firing so that as little of the explosion as possible leaked out the muzzle. Thus the bullet's velocity was not damped. Tests proved that Greener's bullet was extremely effective but it was rejected because, being two parts, it was judged too complicated to produce. The Minié ball
Minié ball
The Minié ball is a type of muzzle-loading spin-stabilising rifle bullet named after its co-developer, Claude-Étienne Minié, inventor of the Minié rifle...

, developed in 1847 by Claude-Étienne Minié, was based on Greener's ideas.

Greener was born in Felling, Northumberland
Northumberland
Northumberland is the northernmost ceremonial county and a unitary district in North East England. For Eurostat purposes Northumberland is a NUTS 3 region and is one of three boroughs or unitary districts that comprise the "Northumberland and Tyne and Wear" NUTS 2 region...

, England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

. He died 1869. See 'The Greener Story' by Graham Greener published by Quiller Press in 2000. See also http://www.wwgreener.com
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