GNR Class J21 (LNER J2)

The Great Northern Railway Class J21 of 1912, which the London and North Eastern Railway classified as J2, was a class of ten 0-6-0 goods steam locomotives built at Doncaster Works. Henry Ivatt adapted his 1911 J6 goods design shortly before his retirement, keeping the same superheated boiler, cylinders and motion but fitting larger coupled wheels of 5 ft 8 in. The design resembled the earlier J1 locomotives apart from the piston valves and superheated boilers. The ten engines were ordered in January 1912 to haul fast braked goods trains between York and Kings Cross, but they were displaced to country duties after the larger K1 2-6-0 locomotives arrived, and later worked local passenger services in Lincolnshire and around Nottingham. Their original Schmidt superheaters were replaced by Robinson superheaters between 1927 and 1929. The first was withdrawn in 1946, one more in 1950 and the last eight in 1953 and 1954, and none was preserved.