Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,535 pages of information and 233,960 images on early companies, their products and the people who designed and built them.
of Tipton, Staffordshire. Telephone: Tipton 1891. Telegraphic Address: "Revo, Tipton"
1907 Private company formed as Cable Accessories Co.
1932 Exhibited at Blackpool exhibition a small selection of their Street Lighting Fittings, several types of brackets, sample street lighting standards and a REVO Traffic Signal.
1936 Company made public.
1936 Exhibited at APLE Conference a range of lanterns for sodium vapour and mercury vapour discharge lamps. The Hoodalite, Magnalite and Progress lanterns were all shown.
1937 Listed Exhibitor - British Industries Fair. Electric Cookers, Boiling Plates, Fires, Irons, Kettles, Fans, Wash Boilers, Tubular and Panel Heaters, Switchgear, Street Lighting, Standards, Brackets and Fittings, Concrete Standards, Industrial Lighting Fittings, Traffic Signs, Guard Posts, Enamelled Signs. (Stand Nos. Cb.505 and Cb.404). 
1937 Electric heating and lighting equipment. 
1938 Patent - Improvements relating to electric hot-plates.
1939 Exhibited at APLE Conference. Described the C10737 (sodium) and C10766 (mercury) lanterns during this conference, both lanterns also featured in their adverts.
1945 Exhibited a lantern using low pressure sodium and gas filled tungsten lamps, designed to overcome the objections by some lighting engineers to the colour of low pressure sodium. The combination of lamps was so disposed that the maximum correcting effect was directed across the roadway where it was of most advantage and detracts least from the remarkable definition obtained from mono-chromatic Sodium light.
1946 Patent - Improvements in double pole electric switch mechanism.
1961 Manufacturers of industrial and street lighting equipment, control gear, electric fans, switchgear, domestic electric cookers and appliances, electronic equipment. Vitreous enamellers to the trade and brassfounders. 2,000 employees. 
Further Reading: www.simoncornwell.com