 In the 1890s they had a very visible advert in City Road as they had erected an arc lamp enclosed in a large elaborate globe.This was driven by current from their own Atkinson twin-cylinder gas engine driving an electric generator, and was at the time the only electric light in the neighbourhood.During the war the engineering side of Whitney was involved in the production of gunmetal bevel wheels for aircraft use, and pressure safety valves that were modified for use on aircraft fuel tanks.