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Armstrong, Stevens and Son of Whittall Street, Birmingham, and Willenhall.
1835 Company founded.
1914 Directory: Listed as Drop Forge manufacturers. 300 employees; expansion because of substantial increase in trade.
Part of Amalgamated Stampers.
1945 Spanner and wrench manufacturers.
By 1959 the drop forged products were marked A.S.& S.W. in a diamond-shaped frame (see advert)
1961 Manufacturers of drop forged spanners and wrenches. Also suppliers of high grade drop forgings of steel, brass, iron and alloys. 
1965 Introduced high-energy rate drop forging (one of the first in Britain), using a press made by Fielding and Platt, also a member of the Heenan Group., under licence from General Dynamics of USA.