Sheffield Twist Drill and Steel Co
Makers of engineers cutting tools, of Summerfield Street, Sheffield 11; of Suffolk House, 5 Laurence Pountney Hill, London, E.C.4.
1913 Company formed: Sheffield Twist Drill Co
1923 London office in Mansion House Chambers, 11 Queen Victoria-street, E.C.[1]
1937 Small tool manufacturers. "Dorclax", "Dormer", "Dormerex" Twist Drills. [2]
1940 Advert for Dormer twist drills. [3]
1945 Advert for Dormer twist drills and small tools. [4]
1947 Public company.
1961 Manufacturers of "Dormer" twist drills, reamers, end mills, milling cutters, taps and dies, and machine tools. 1,250 employees. [5]
1972 Amalgamated with Aldridge Tool (Holdings)[6]
See Also
Sources of Information
- ↑ The Engineer 1923/08/10
- ↑ 1937 The Aeroplane Directory of the Aviation and Allied Industries
- ↑ Mechanical World Year Book 1940. Published by Emmott and Co of Manchester. Advert p194
- ↑ Mechanical World Year Book 1945. Published by Emmott and Co of Manchester. Advert p77
- ↑ 1961 Dun and Bradstreet KBE
- ↑ The Times, Jun 30, 1972