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Smart and Brown of Spennymoor and Erith, Kent.
1897 Company founded by J. G. Smart.
1902 Partnership formed with G. W. Brown.
1907 The Trader Combined Paraffin Electric Set 
1913-1917 For a list of the models and prices of Marine Motors see the 1917 Red Book under S. and B. name.
1914 Engineers, Toolmakers and General Machinists. Specialities: paraffin and petrol engines for all purposes, Smart's milling and wheel cutting attachments for the lathe, four-cycle engines and complete marine equipments using paraffin or petrol, engines for stationary purposes (petrol, paraffin or gas), S. and B. Motor Winch. 
1936 Private company.
1939 Name changed.