In 1822, the firms of Roberts, Hill and Co. and Sharp, Hill and Co. were dissolved and re-formed as Sharp, Roberts and Co. and again in 1843 when Roberts left. John Sharp and Thomas Beatt Sharp carried on their part of the business at the Atlas Works in Oxford street and Great Bridgewater street as Sharp Brothers. In 1852, the senior partner, John Sharp, retired and was replaced by Charles Patrick Stewart, the name of the company changing to Sharp, Stewart and Co. In 1903, having built over 5,000 engines, the company amalgamated with Neilson, Reid and Co. and Dubs and Co. to form the North British Locomotive Co.
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