The gin made cotton profitable which was a boon to the ... He would go on to pioneer the use of interchangeable parts in manufacturing, but that’s an entirely different story.

click image for close-up In October of 1793, Eli Whitney sent a drawing of his new invention, the cotton gin, to Secretary of State Thomas Jefferson in application for a patent. Jefferson replied ...

On June 20, 1793, Eli Whitney, who had graduated from Yale the previous year, wrote to Secretary of State Thomas Jefferson, requesting a patent for his new invention, the cotton gin. The gin ...