Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 125,711 pages of information and 196,436 images on early companies, their products and the people who designed and built them.
1870 Patent. '209. And to Archibald Samuels Campbell, of Hampstead, in the county of Middlesex, Gentleman, for the invention of "an improved appliance for facilitating the working of bicycles arid tricycles."'