Armstrong Whitworth: Tools
Armstrong Whitworth and Co (Tools) Ltd, London and Tynemouth
Armstrong Whitworth and Co (Pneumatic Tools) Ltd
Presumably this was developed from the pneumatic tools activity at Scotswood Works of Sir W. G. Armstrong Whitworth and Co (Engineers)
c1937 Sir John Jarvis acquired Armstrong Whitworth and Co (Pneumatic Tools) Ltd as part of his initiative to relieve unemployment on Tyneside.
1954 Supplied tools to car manufacturers (see advert)
1961 Manufacturers of electric and pneumatic tools. 354 employees. [1]
By 1962 Armstrong Whitworth and Co (Pneumatic Tools) Ltd had changed its name to Thor Tools Ltd.