The cotton gin was invented in 1793 by American inventor Eli Whitney, with the patent granted on March 14, 1794.

Quick Scoop

  • Core fact: Eli Whitney designed the first successful modern cotton gin in 1793 while working in Georgia, creating a machine that quickly separated cotton fiber from seeds.
  • Patent date: Whitney received his U.S. patent for the cotton gin on March 14, 1794, officially recognizing his invention.
  • Earlier versions: Simple roller-type cotton gins existed centuries earlier in places like India, but Whitney’s 1793 design was the first highly efficient gin for short‑staple cotton and is what most people mean when they ask “when was the cotton gin invented.”

TL;DR: When someone asks “when was the cotton gin invented,” the standard historical answer is 1793, with the patent following in 1794.

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