Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,137 pages of information and 233,680 images on early companies, their products and the people who designed and built them.
1920 Curtis's and Harvey, recognising that the production of gas mantles had become more than a sideline, established a new subsidiary Record Gas Mantle Co Ltd which acquired the Ironclad mantle activity. Soon after acquired Ramie Co Ltd, which included the British Thorium Syndicate, and the Volker Lighting Corporation. As a result the company owned 4 of the 7 principal mantle factories in Britain, one of the 2 Ramie works, one of the 2 principal Thorium works and had interests in the other.