This is the intricate mechanism which operates the unusual clock in the Grand Arcade. The clock was designed and made by Leeds Clockmakers Robert, James and Joseph Potts. The firm of William Potts and Sons Ltd. became established in Leeds in the 19th Century. William Potts was originally from Durham but settled here in 1833, first in Pudsey Chapeltown, then Bankfield Terrace, Burley, in the 1860s. Many of the public clocks in the city are Potts clocks and are still repaired and maintained by the firm. When the change is made from British Summertime to Greenwich Meantime and vice-versa, it takes a team of maintenance workers 36 hours to reset all the clocks in the city. Images of the clock in the Grand Arcade can be accessed on this site.