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Home > History > Invention of the Cotton Gin

Invention of the Cotton Gin

This page describes the effect of the cotton gin on the future of slavery.

Eli Whitney

Eli Whitney

Eli Whitney, the inventor of the cotton gin, was born on December 8, 1765, in Westborough, Massachusetts. His mother died when he was only eleven years old. At age 14, Eli had started his own business making and selling nails in his father's workshop during the Revolutionary War.

Eli Moves South to Make His Fortune

While working as a school teacher and farmer, Whitney was able to save enough money to attend college at Yale University. After graduating with honors from Yale, he studied law, but failed to finish his studies because he couldn't pay tuition. Consequently, Eli decided to make his fortune by moving to the South. During his travels southward, he met the Revolutionary War hero Nathanael Greene’s widow. Taking a liking to Whitney, Mrs. Greene invited him to visit her family's Georgia plantation. Mrs. Greene and her soon to be husband, Phineas Miller, welcomed Eli and the two men later became partners in business.

The Effect of the Invention of the Cotton Gin

After visiting cotton plantations in the south, Eli saw a need for an invention that would allow cottonfarmers to harvest their cotton more efficiently for market. In 1793, Whitney was able to create such an invention that would change the harvesting of cotton forever. The invention of the "Cotton Gin" (short for Cotton Engine) helped to revolutionize the processing of cotton crops throughout the southern United States. The cotton gin is a device that mechanically removes the sharp seeds from cotton plants, thereby enabling plantation owners to produce 55 pounds of cotton per day. Whitney’s cotton gin was said to be one of the most important contributions to America’s Industrial Revolution. It was also said to have reinvigorated the practice of slavery, a practice that may have been in decline in the south before the invention. Cotton soon became America's most important export and represented over 50% of the value of all goods shipped abroad from its shores between 1820 and 1860.


While Eli Whitney is best known for inventing the cotton gin, he is also credited with the invention of the cotton milling machine. However, historians are not quite sure if he was the sole inventor of the cotton milling machine or if others were also working on the invention of these milling machines during the same time period. Being a true inventor at heart, Eli Whitney never stopped working on his inventions until his death on January 8, 1825. In the years before he died, Eli invented mechanical devices designed to help ease the pain of his prostate cancer.




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