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F. W. Cotterill of Atlas Works, Darlaston, South Staffs.
1845 Mention. F. W. Cotterill, bolt manufacturer, Darlaston.
1872 Liquidation of Charles Carter and Co, of the Atlas Works, Station-street, Darlaston, Nut and Bolt Manufacturers, Iron Girder Makers, and General Railway Smiths
1894 Petch's Wheel Cap Wrench 
At some point acquired John Garrington and Sons (presumably 1912)
1919 Guest, Keen and Nettlefolds absorbed F. W. Cotterill, of Darlaston, for its extensive nut and bolt and other interests., this firm having previously absorbed John Garrington and Sons, forming the largest nut and bolt company in the country.
1949 Bolt and Nut Division of Atlas Works, part of Guest, Keen and Nettlefolds (Midlands).
1962 Part of GKN Bolts and Nuts