GER Class B74

GER Class B74
LNER Class Y4
Departmental (Service) locomotive No. 33 at Stratford Locomotive Depot, 18 February 1961
Type and origin
Power type Steam
Designer A. J. Hill
Builder Stratford Works
Build date 1913–1921
Total produced 5
Specifications
Configuration:
 ​
 • Whyte 0-4-0T
 • UIC B n2t
Gauge 4 ft 8 1⁄2 in (1,435 mm)
Driver dia. 3 ft 10 in (1.168 m)
Wheelbase 6 ft 0 in (1.829 m)
Length 24 ft 1 1⁄2 in (7.35 m) over buffers
Axle load 19 long tons 1 cwt (42,700 lb or 19.4 t)
Loco weight 38 long tons 1 cwt (85,200 lb or 38.7 t) full
Fuel type Coal
Fuel capacity 0 long tons 15 cwt (1,700 lb or 0.8 t)
Water cap 750 imp gal (3,410 l; 901 US gal)
Firebox:
 • Firegrate area		 13.9 sq ft (1.29 m2)
Boiler LNER Diagram 40
Boiler pressure 180 lbf/in2 (1.24 MPa)
Heating surface 980.5 sq ft (91.09 m2)
 • Tubes 905.4 sq ft (84.11 m2)
 • Firebox 75.1 sq ft (6.98 m2)
Superheater None
Cylinders Two, outside
Cylinder size 17 in × 20 in (432 mm × 508 mm)
Valve gear Walschaerts
Valve type Slide valves
Performance figures
Tractive effort 19,224 lbf (85.51 kN)
Career
Operators
Class
  • GER: B74
  • LNER: Y4
Power class BR: 0F
Nicknames Pots
Axle load class LNER/BR: RA 6
Disposition All scrapped

The GER Class B74 was a class of five 0-4-0T steam locomotives designed by Alfred John Hill for the Great Eastern Railway. They all passed to the London and North Eastern Railway at the 1923 grouping and received the LNER classification Y4.

History

These locomotives had 17-by-20-inch (432 by 508 mm) outside cylinders driving 3-foot-10-inch (1.168 m) wheels. They were built to replace the older, less powerful Class 209 (LNER Class Y5).

Table of orders and numbers[1]
YearOrderManufacturerQuantityGER Nos.LNER Nos.LNER 1944 Nos.Notes
1913B74Stratford Works122772278125
1914B77Stratford Works2228, 2267228, 7226,8126, 8127
1921A82Stratford Works2229, 2107229, 72108128, 8129

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 B74 locomotives. There were renumbered 8125–8129 in the 1944 renumbering scheme. At nationalisation in 1948, British Railways added 60000 to their numbers.

In 1952, number 68129 was transferred to the Service (departmental) list and renumbered 33. Withdrawals started in 1955 with 68125, with 68127 and 68128 going in 1956 and 68126 in 1957. The last to be withdrawn was 33, in 1963.

References

Notes

  1. ↑ Aldrich 1969, p. 108.

Bibliography

  • 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. p. 103. ISBN 978-1-905505-26-5.
  • Boddy, M. G.; Brown, W. A.; Fry, E. V.; Hennigan, W.; Hoole, Ken; Manners, F.; Neve, E.; Platt, E. N. T.; Proud, P.; Yeadon, W. B. (June 1977). Fry, E. V., ed. Locomotives of the L.N.E.R., Part 9B: Tank Engines—Classes Q1 to Z5. Kenilworth: RCTS. ISBN 0-901115-41-X.
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