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Chicago
1831
The mechanical reaper
The man who helped Cyrus McCormick invent the mechanical reaper was a slave named Jo Anderson. McCormick also acknowledged that his invention was based on work done by people before him.
Cyrus McCormick was actually the co-inventor of the reaper. The other inventor was Jo Anderson. Jo Anderson was a slave and if often not credited for co-inventing the reaper with Cryrus McCormick (a white man). As for WHEN they did this, sometime between 1800-1830.
The mechanical reaper was invented by Cyrus McCormick, not Jo Anderson. He applied for the patent in 1834.
The first McCormick Reaper was built and tested in Walnut Grove, VA. However, the majority of the Reapers were built at a factory in Chicago, IL.
Cyrus McCormick invented the reaper.
Cyrus McCormick and his father together invented the mechanical reaper, and Cyrus also developed new sales and marketing methods to sell it throughout the west.
Cyrus McCormick
Cyrus McCormick
Cyrus McCormick