Midland Railway 1121 Class

The Midland Railway 1121 class was a class of 0-6-0T tank locomotives designed by Samuel W. Johnson for the Midland Railway. Fifty-five were built between 1895 and 1900: ten by the railway company's Derby Works, five by Sharp, Stewart and Company, and the remaining forty by Robert Stephenson and Company.

Midland Railway 1121 class
LMS 1874
Type and origin
Power typeSteam
DesignerSamuel W. Johnson
Builder
Build date1895–1899
Total produced55
Specifications
Configuration:
​
 • Whyte0-6-0T
 • UICC n2t
Gauge4 ft 8 1⁄2 in (1,435 mm)
Driver dia.4 ft 6 in (1.372 m)
Wheel spacing
(Asymmetrical)
  • 7 ft 4 in (2.235 m) +
  • 8 ft 2 in (2.489 m)
BoilerMR type A1
Boiler pressure160 lbf/in2 (1.1 MPa)[1]
Heating surface1,120 sq ft (104 m2)[1]
CylindersTwo, inside
Cylinder size17 in × 24 in (432 mm × 610 mm)
Career
Operators
Power class1F
Numbers
  • MR: 1121–1130, 2248–2252, 2361–2390, 2571–2580
  • LMS: 1845–1899
  • BR: 41846–41890 (with gaps)
LocaleLondon Midland Region
WithdrawnDecember 1930 – July 1963
DispositionAll scrapped

Construction history

The class were a development of the 1377 class “half cabs”. They differed by having the A1 type boiler in place of the earlier's type A. The wheelbase was stretched by 6 inches (150 mm) – all between the main and rear driving wheels. They also had a full cab.

Table of orders and numbers[2]
Original No.1907 (& LMS) No.ManufacturerWorks Nos.QtyYearNotes
1121–11301845–1854Derby Works(order no. 1395)101895
2248–22521855–1859Sharp, Stewart & Co.4062–406651895
2361–23901860–1889R. Stephenson & Co.2931–2960301899
2571–25801890–1899R. Stephenson & Co.2961–2970101899–1900

Post-Midland Railway

All 55 passed to the London, Midland and Scottish Railway (LMS) at the 1923 grouping in 1923. Withdrawals started in 1930, and by 1948, when the railways were nationalised, 23 locomotives passed into British Railways ownership, and were allocated numbers 40000 higher than their LMS numbers, although five were withdrawn before the new numbers were applied. Withdrawals continued, with the last one, 41875, taken out of service in July 1963.

None were preserved.

References
  1. Baxter 1982, p. 118.
  2. Baxter 1982, pp. 146–147.
  • Baxter, Bertram (1982). Baxter, David (ed.). British Locomotive Catalogue 1825–1923. Volume 3A: Midland Railway and its constituent companies. Ashbourne, Derbyshire: Moorland Publishing Company. ISBN 9780903485524.
  • Casserley, H. C. & Johnston, Stuart W. (1974) [1966]. Locomotives at the Grouping 3: London, Midland and Scottish Railway. Shepperton, Surrey: Ian Allan. ISBN 0-7110-0554-0.
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