Chimney sweep

A chimney sweep is a person who clears soot and creosote from chimneys. The chimney uses the pressure difference caused by a hot column of gas to create a draught and draw air over the hot coals or wood enabling continued combustion. Chimneys may be straight or contain many changes of direction. During normal operation, a layer of creosote builds up on the inside of the chimney, restricting the flow. The creosote can also catch fire, setting the chimney (and potentially the entire building) alight. The chimney must be swept to remove the soot. In Great Britain, master sweeps took apprentices, typically workhouse or orphan boys, and trained them to climb chimneys. In the German States, master sweeps belonged to trade guilds and did not use climbing boys. In Italy, Belgium, and France climbing boys were used. The occupation requires some dexterity, and carries health risks. The Tudors in England had established the risk of chimneys and an ordinance was created in 1582 both controlling materials (brick and stone rather than plastered timber) and requiring chimneys to be swept four times per year to prevent the build-up of soot (which is highly flammable). Any chimney fire could be fined 3 shillings and 4 pence. With the increased urban population that came with the age of industrialisation, the number of houses with chimneys grew apace and the services of the chimney sweep became much sought-after. Buildings were higher than before and the new chimneys' tops were grouped together. The routes of flues from individual grates could involve two or more right angles and horizontal angled and vertical sections. The flues were made narrow to create a better draught, 14in by 9in (36 × 23 cm) being a common standard. Buckingham Palace had one flue with 15 angles, with the flue narrowing to 9in by 9in (23 × 23 cm). Chimney sweeping was one of the more difficult, hazardous, and low-paying occupations of the era, and consequently has been derided in verse, ballad, and pantomime.