Joseph Bell Alexander Complete Biography, History, and Inventions

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Joseph Bell Alexander was a doctor, an undertaker, and an inventor who patented more than half a dozen inventions during his life in 19th century Washington, D.C.

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Joseph Bell Alexander invented the calculating machine, an oil-burning lamp, a series of siphon bottles and bottle-stoppers, and an automatic railroad switch.

What did Joseph Bell Alexander invent?

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Joseph Bell Alexander invented his adding machine by placing eight distinct sets of wheels, drums, and levers inside a wooden case with a curved metal front and back.

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How did Joseph Bell Alexander invent his adding machine?

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While his device doesn’t seem to have ever seen the light of day, there’s no doubt his invention was one of a kind for its time.

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Joseph Bell Alexander was born on May 11th, 1821 in New Bern, North Carolina.

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When was Joseph Bell Alexander born?

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