Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 134,691 pages of information and 213,769 images on early companies, their products and the people who designed and built them.
See also Ryknield Engine Co
1902 October. Building new factory. First vehicle already on the road.
1904 March. Details of their petrol cars.
1905 The first PSV was announced and 20 were run in Brussels by 1910.
1906 Produced 15 h.p. (three-cylinder) and 20 h.p. (four-cylinder) cars with shaft-drive. Described as British made. 
1905 September. Details of the T.T. car.
1906 Agents were the Central Motor Car Co
British operators included Leeds, LGOC, and Tormorden.
1907 The emergency brake designed for use by the conductor was launched.
1911 May. Insolvent. 'In the Matter of the RYKNIELD MOTOR COMPANY Limited. IN pursuance of section 188 of the Companies (Consolidation) Act, 1908, a Meeting of the creditors of the above named Company...'
When they went bankrupt, Barton Transport were offered thirty chassis that Tom Barton bought and resold.