GER Class T77

The GER Class T77 was a class of twenty-five 0-6-0 steam locomotives designed by A. J. Hill for the Great Eastern Railway. They all passed to the London and North Eastern Railway at the 1923 grouping and received the classification J19.

GER Class T77
LNER Class J19
Down (westbound) freight on the North London line at Finchley Road & Frognal. The train was probably from Temple Mills Yard (Leyton), heading for the SR with a Gresley rebuild of ex-GE J19 No. 64657. 7 May 1955
Type and origin
Power typeSteam
DesignerA. J. Hill
BuilderStratford Works
Build date1916–1920
Total produced25
Specifications
Configuration:
​
 • Whyte0-6-0
 • UICC h2
Gauge4 ft 8 1⁄2 in (1,435 mm)
Driver dia.4 ft 11 in (1.499 m)
Wheelbase38 ft 7 in (11.76 m)
Length52 ft 2 in (15.90 m) over buffers
Loco weight47 long tons 7.5 cwt (106,100 lb or 48.1 t)
Firebox:
 • Firegrate area		21.6 sq ft (2.01 m2)
Boiler pressure160 lbf/in2 (1.10 MPa)
Heating surface1,501.1 sq ft (139.46 m2)
Cylinder size20 in × 28 in (508 mm × 711 mm)
Valve gearStephenson
Performance figures
Tractive effort25,817 lbf (114.84 kN)
Career
Operators
Class
  • GER: T77
  • LNER: J19
Power classBR: 5F
Axle load classLNER/BR: RA 5
Withdrawn1959–1962
DispositionAll scrapped

History

These locomotives were a development of the GER Class E72, and shared the same 20-by-28-inch (508 mm × 711 mm) cylinders, 4-foot-11-inch (1.499 m) wheels, and Belpaire firebox-fitted boiler. Changes included vacuum brakes from new, and the abandonment of cylinder tail rods.

Table of orders and numbers[1]
YearOrderManufacturerQuantityGER Nos.LNER Nos.1946 Nos.Notes
1916–17T77Stratford Works101140–11498140–81494650–4659
1917–18H80Stratford Works51260–12648260–82644660–4664
1918–19X80Stratford Works51265–12698265–82694665–4669
1920A81Stratford Works51250–12548250–82544670–4674

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 T77 locomotives. Between 1934 and 1939 all were rebuilt with round-top fireboxes, and the cylinder bore was reduced to 19 inches (483 mm).[1] The rebuilt locomotives were reclassified J19/2, while the yet-to-be rebuilt locomotives reclassified J19/1. The J19/2 classification also included the rebuilt former Class E72 locomotives.[2]

At nationalisation in 1948, British Railways added 60000 to their LNER numbers. They all continued in service until 1959, when the first was withdrawn; all were gone by the end of 1962.[1]

Table of withdrawals[3]
YearQuantity in
service at
start of year		Quantity
withdrawn		Locomotive numbersNotes
195925864651/58/61–62/65/68/70/72
196017664650/54/56/59–60/63
196111764652–53/55/66–67/69/74
19624464657/64/71/73

References
  1. Aldrich 1969, p. 73.
  2. Aldrich 1969, p. 71.
  3. Baxter 2012, p. 102.
  • Aldrich, C. Langley (1969). The Locomotives of the Great Eastern Railway 1862–1962 (7th ed.). Wickford, Essex: C. Langley Aldrich. OCLC 30278831.
  • 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. ISBN 978-1-905505-26-5.
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