0-6-0 GER Class E72 No. 1240 fitted with Weir feed pump and heater about 1915
These locomotives had 20-by-28-inch (508 mm × 711 mm) inside cylinders driving 4-foot-11-inch (1.499 m) wheels. They had a distinctive front overhang, not possessed by any other GER 0-6-0 class. This was needed to clear the cylinder tail rods. Locomotive 1240 was fitted for a time with a Weir feedwater heater and pump, with the heater component mounted on the boiler between the dome and chimney.
All were still in service at the 1923 grouping; the LNER adding 7000 to the numbers of nearly all the ex-Great Eastern locomotives, including the Class E72 locomotives. Between 1935 and 1936, the LNER rebuilt them in line with its standards, and reclassified them as class J19/2, the same as the rebuilt GER Class T77 (which had been LNER class J19, later J19/1, before rebuilding).
At nationalisation in 1948, British Railways added 60000 to their LNER numbers. They all continued in service until 1951, when the first was withdrawn; all were gone by the end of 1961.
Aldrich, C. Langley (1969). The Locomotives of the Great Eastern Railway 1862–1962 (7th ed.). Wickford, Essex: C. Langley Aldrich. OCLC30278831.
Baxter, Bertram (2012). Baxter, David; Mitchell, Peter, eds. British Locomotive Catalogue 1825–1923, Volume 6: Great Eastern Railway, North British Railway, Great North of Scotland Railway, Midland & Great Northern Joint Railway, remaining companies in the LNER group. Southampton: Kestrel Railway Books. ISBN978-1-905505-26-5.