High Quality Content by WIKIPEDIA articles! A cotton gin (short for cotton engine ) is a machine that quickly and easily separates the cotton fibers from the seeds, a job previously done by hand. These seeds are then used to grow more cotton, produce cottonseed oil, or, if badly damaged, are disposed of. It uses a combination of a wire screen and small wire hooks to pull the cotton through the screen, while brushes continuously remove the loose cotton lint to prevent jams. The earliest versions consisted of a single roller made of iron or wood and a flat piece of stone or wood. Evidence for this type of gin has been found in Africa, Asia, and North America. The first documentation of the cotton gin by contemporary scholars is found in the fifth century AD. Visual evidence of the single-roller gin exists in the form of fifth-century Buddhist paintings in the Ajanta Caves in western India. These early gins were difficult to use and required a great deal of skill. A narrow single roller was necessary to expel the seeds from the cotton without crushing the seeds. The design was similar to that of a metate, which was used to grind grain.

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