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Elisha Graves Otis 1811-1861
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Elisha Graves Otis (1811-1861), demonstrating his patent safety lift at the 1854 New York World's Fair. Above the elevator, a man cut the elevator's only supporting rope with an ax, but the elevator did not fall more than a few inches, because of Otis invention, an elevator brake.
December 6th, 2011
Viewed 403 Times - Last Visitor from Santa Maria Da Feira, Santa Maria da Feira - Portugal on 07/22/2014 at 10:48 PM
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