21 июн 1834 г. - cyrus mccormick- mechanical harvest

Описание:

Cyrus McCormick at age 22 attempted to resemble a two-wheeled, horse-drawn chariot, the machine had a vibrating cutting blade, a reel to bring the grain within its reach, and a platform to receive the falling grain in 1831. He made a final product in 18 months and got a patent in 1834.

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