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  2. Eli Whitney - Wikipedia

    en.wikipedia.org/wiki/Eli_Whitney

    Eli Whitney Jr. (December 8, 1765 – January 8, ... Machine tool historian Joseph W. Roe credited Whitney with inventing the first milling machine circa 1818.

  3. Interchangeable parts - Wikipedia

    en.wikipedia.org/wiki/Interchangeable_parts

    The development of the machine tools and manufacturing practices required would be a great expense to the U.S. Ordnance Department, and for some years while trying to achieve interchangeability, the firearms produced cost more to manufacture. By 1853, there was evidence that interchangeable parts, then perfected by the Federal Armories, led to ...

  4. Cotton gin - Wikipedia

    en.wikipedia.org/wiki/Cotton_gin

    A model of a 19th-century cotton gin on display at the Eli Whitney Museum in Hamden, Connecticut. A cotton gin—meaning "cotton engine" [1] [2] —is a machine that quickly and easily separates cotton fibers from their seeds, enabling much greater productivity than manual cotton separation. [3]

  5. Milling (machining) - Wikipedia

    en.wikipedia.org/wiki/Milling_(machining)

    Between 1912 and 1916, Joseph W. Roe, a respected founding father of machine tool historians, credited Eli Whitney (one of the private arms makers mentioned above) with producing the first true milling machine. [22] [23] By 1918, he considered it "Probably the first milling machine ever built—certainly the oldest now in existence […]."

  6. Timeline of United States inventions (before 1890) - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_United_States...

    Eli Whitney (1765–1825) ... 1816 Milling machine. A milling machine is a machine tool used for the shaping of metal and other solid materials. In contrast to ...

  7. Technological and industrial history of the United States

    en.wikipedia.org/wiki/Technological_and...

    In 1789, the widow of Nathanael Greene recruited Eli Whitney to develop a machine to separate the seeds of short fibered cotton from the fibers. The resulting cotton gin could be made with basic carpentry skills but reduced the necessary labor by a factor of 50 and generated huge profits for cotton growers in the South, leading to a rapid ...

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