Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 138,114 pages of information and 223,034 images on early companies, their products and the people who designed and built them.
of Safuse Works, Northcote Road, Stetchford, Birmingham, 9. Telephone: Stetchford 2277/89. Telegraphic Address: "Donovan, Birmingham". (1937)
also of Great Charles Street, Birmingham. (1937)
1933 Private company.
1934 Patent - Improvements relating to electric motor controllers. 
1937 Listed Exhibitor. Manufacturers of Electric Control Gear of nearly every description, for automatic or manual operation, including Contractors, Starters, Regulators, Dimmers, Fuses, Switches, Plugs, Switchboards, Links in open and Home Office types. (Stand No. Cb.409) 
1937 Manufacturing electrical engineers. "Barwick" Motor Starters. "Donlok" Switch and Plug-gear. "Safuse" Switch and Fusegear. 
1947 Patent - Improvements in operating and control mechanism for portable electric drilling, grinding and like tools. 
1961 Manufacturers of industrial electro-magnetic contractor gear and allied equipment, also electrical wholesalers and distributors.