Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,470 pages of information and 233,895 images on early companies, their products and the people who designed and built them.
Powell Brothers and Whitaker of Wrexham
1894 June. Royal Agricultural Society's Show. Eradicator. 
1900 June. Royal Agricultural Show at York. Showed a potato raiser. 
1914 Commenced producing an i/c engine but paused during WWI and re-commenced in 1918 
1919 Producing the Dependable engine
Mid 1920s Experimented with the Powell motorcycle but without any great success
1927 Company went in to liquidation and the engine pattens were bought by Cudworth and Johnson