GWR 7 (Armstrong) Class
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| Armstrong Class | |||||||||||||||||||
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 No. 7 Armstrong c. 1900 | |||||||||||||||||||
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The William Dean 7 or Armstrong Class refers to a group of four prototype 4-4-0 double-frame locomotives built at the Swindon Works of the Great Western Railway in 1894.
They were nominal renewals of four of Dean's "experimental locomotives", Nos. 7, 8, 14 and 16. Had it not been for the recent derailing of one of his 3001 Class 2-2-2s in Box Tunnel, these engines would probably have been rebuilt as 2-2-2s. They ultimately emerged as double-framed four-coupled engines with 7 ft 0.5 in (2.146 m) driving wheels and a front bogie similar to that used on the 3031 Class.
Names
The four locomotives, which with their double-curved running plates were exceptionally handsome, were named as follows:
- 7 Charles Saunders (first), Armstrong (second)
- 8 Gooch
- 14 Charles Saunders
- 16 Brunel