Charles Winn and Co
of Granville Street, Birmingham
1859 Company founded.
1919 Advert for screwing machines. 
1961 Manufacturers of valves and allied fittings for steam, equipment for fire engines and water tenders, industrial and domestic sanitary fittings and screwing machines for tubes and bolts. 230 employees. 
1974 Mr. C. D. Southall became works director.
Sources of Information
- Mechanical World Year Book 1919. Published by Emmott and Co of Manchester. Advert p83
- 1961 Dun and Bradstreet KBE
- The Engineer 1974/05/02