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What did William Addis invent in prison?

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Avijit Das 1 year 1 Answer 338 views Gold 0

Answer ( 1 )

  1. William Addis invent Toothbrush in prison.

    As per Wikipedia “William Addis (1734–1808) was an English entrepreneur believed to have produced the first mass-produced toothbrush in 1780. Addis was born in 1734 in England, probably in Clerkenwell,[note 1] London. In 1770, Addis had been jailed for causing a riot in Spitalfields. While in prison, and observing the use of a broom to sweep the floor, he decided that the prevalent method used to clean teeth at the time – crushed shell or soot with a cloth was ineffective and could be improved. To that end, he saved a small animal bone left over from the meal he had eaten the previous night, into which he drilled small holes. He then obtained some bristles from one of his guards, which he tied in tufts that he then passed through the holes in the bone, and which he finally sealed with glue.”

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