What did William Addis invent whilst in Newgate Prison?
William Addis (entrepreneur) UK. By 1840 toothbrushes were being mass-produced in England, France, Germany, and Japan. William Addis (entrepreneur) 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, 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 timecrushed shell or soot with a cloth was ineffective and could be improved. To that end, he saved
Newgate Prison Notes Newgate Prison Newgate Prison was a prison at the corner of Newgate Street and Old Bailey just inside the City of London, England, originally at the site of Newgate, a gate in the Roman London Wall. Built in the 12th century and demolished in 1904, the prison was extended and rebuilt many times, and remained in use for over 700 years, from 1188 to 1902. In the early 12th century, Henry II instituted legal reforms that gave the Crown more control over the administration of justice. As part of his Assize of Clarendon of 1166, he required the construction