Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 126,749 pages of information and 199,758 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."'