class 2-4-0 Waverley class 4-4-0 Standard gauge 57 Class 0-6-0 69 Class 2-2-2 77 and 167 Classes 0-6-0 79 Class 0-6-0 91 Class 0-4-0ST 93 Class 0-6-0T 131 Class 0-6-0 "Sharps" or 157 Class 2-2-2 "England" or "Chancellor" Class 2-4-0 320 Class 2-4-0WT 322 or "Beyer" Class 0-6-0 Joseph Armstrong (Wolverhampton 1854 - 1864, Swindon 1864 - 1877) In 1864 Gooch was succeeded by Joseph Armstrong who brought his standard gauge experience gained in the Northern Division to bear on the larger broad gauge locomotives. He designed the Hawthorn class of 2-4-0 and, in 1870, started the renewal of the Iron Dukes with more powerful boilers. The conversion of many broad gauge lines to standard gauge meant that this was a period of consolidation but in 1876 the amalgamation of the Bristol and Exeter and South Devon Railway locomotives saw 180 locomotives added to the GWR's fleet. To replace some of these earlier locomotives, Armstrong put broad gauge wheels on his standard gauge 1076 Class and from this time on GWR locomotives were given numbers rather than the names that had been carried by broad gauge locomotives up till then. Armstrong developed the 2-2-2 as his preferred express locomotive, producing 30 of the Sir Daniel class from 1866 and 21 of the Queen class from 1873. Smaller 2-4-0s, such as the 439 class of 1868, worked slower passenger trains while 0-6-0s, such as the 388 class, continued to operate freight trains. Tank locomotives were constructed to operate lighter trains and branch lines, the most familiar of which were the 1076 "Buffalo" class 0-6-0STs (later 0-6-0PT), and the 455 "Metro" class 2-4-0Ts. Broad gauge Hawthorn class 2-4-0, later 2-4-0ST Swindon class 0-6-0 Rover class 4-2-2 Standard goods 0-6-0 1076 Class 0-6-0ST Standard gauge Queen/Sir Alexander Class 2-2-2 Sir Daniel Class 2-2-2 7/8/30/32/110 Class 2-2-2 17 Class 2-4-0ST 56/717 Class 2-4-0 111 Class 2-4-0 302 Class 0-6-0ST 360 Class 0-6-0 388 Class "Standard Goods" 0-6-0 439 "Bicycle" Class 2-4-0 455 Class 2-4-0T 481 Class 2-4-0 806 Class 2-4-0 927 Class "Coal Goods" 0-6-0 1076 Class 'Buffalo' 0-6-0ST George Armstrong (Wolverhampton 1864 - 1897) After his brother was promoted to Swindon, George Armstrong took his place at Wolverhampton and for the next 33 years continued to repair, rebuild and build standard-gauge locomotives in a spirit of independence from Swindon, just as Joseph had done during his own ten years at Wolverhampton. Most of