Chimney sweeper - One whose business it is to sweep chimneys, in order to remove the soot [OED]

“Chimney Sweepers” from Costume of the Lower Orders of London, designed and engraved from Nature by T.L. Busby”, 1820.
depicts a London sweep in company with his climbing boy. They carry short brushes, a scraper, blankets for the removal of soot and they are ragged and dusty. 

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