L&YR Class 24

The L&YR Class 24 was a class of short-wheelbase 0-6-0T steam locomotives of the Lancashire and Yorkshire Railway (L&YR). It was designed by Aspinall and introduced in 1897 for shunting duties. Twenty locomotives were built but 6 were withdrawn between 1917 and 1922.

L&YR Class 24
No. 11535 with wooden dumb buffers at Bank Hall Locomotive Depot in 1948
Type and origin
Power typeSteam
DesignerAspinall
Build date1897
Total produced20
Rebuild date1917–1919
Number rebuilt7
Specifications
Configuration:
​
 • Whyte0-6-0T
Gauge4 ft 8 1⁄2 in (1,435 mm)
Driver dia.4 ft 0 in (1.219 m)
Loco weight50 long tons (51 t)
Fuel typeCoal
Boiler pressure160 psi (1.10 MPa)
Cylinders2 outside
Cylinder size17 in × 24 in (432 mm × 610 mm)
Valve gearAllan
Performance figures
Tractive effort17,470 lbf (77.7 kN)
Career
OperatorsL&YR, LMS, BR
Power classLMS 2F
Numbers
  • L&YR: 493–496, 499, 501, 503, 505–507, 1351–1360
  • LMS: 11533–11546 (with gaps)
  • BR: 51535–51546 (with gaps)
Nicknames
LocaleLondon Midland Region
Withdrawn1914–1961
DispositionAll scrapped

They were notable for the first design of a locomotive in Britain to use a belpaire firebox and its first use on the L&YR.[3]

Design and construction

They were designed for use in freight yards with sharp curves and steep inclines where more power was needed than that provided by alternative 0-4-0ST Aspinall Pugs.[3]

This was the first time for a new build on the L&YR a belpaire firebox was used.[3] The short-wheelbase design included outside cylinders with Richardson balanced valves on top; these being controlled by a combination of Allan motion and rocking shaft.[4]

Modifcations

The steam reversing gear, helpful for faster shunting operations, was later replaced by a screw which negated this effect. The push and pull regulator handle seemed to have been responsible for a number of minor accidents through lack of fine control was also replaced by a standard type. Those working in the Liverpool docks area had bells fitted beneath the boiler.[5]

Seven of the remaining engines were re-built with Barton Wright type round top boilers around the 1917–1919 period.[6]

Fleet
Table of locomotives [7]
L&YR no. LMS no. BR no. Withdrawn
1351 1916 or earlier
1352 11533 1926
1353 11534 1928
1354 1914
1355 11535 51535 1956
1356 11536 51536 1954
1357 1917
1358 11537 51537 1961
1359 11538 1932
1360 11539 1926
493 1914
494 11540 1931
495 11541 1926
496 11542 1931
499 11543 1932
501 11544 51544 1959
503 1914
505 11545 1936
506 11546 51546 1959
507 1914

Service

The class was allocated mostly to yards in the Liverpool area with Newton Heath and Agecroft depots receiving a number for use in their local larger marshalling yards. One based at Ormskirk was noted for performing on the main line between shunting duties.[2]

Fourteen locomotives passed to the London, Midland and Scottish Railway at the grouping in 1923.[8] After further withdrawals, 5 locomotives passed to British Railways (BR) in 1948 and they were numbered as shown in the table above.[9] All had been withdrawn by 1961.[7] None were preserved.

See also
  • LMS Fowler Dock Tank, a similar LMS design which also incorporated outside cylinders regarded as unusual practice for a dock tank

References
  1. Lane (2010), p. 94, 96.
  2. Lane (2010), p. 96.
  3. Lane (2010), p. 94.
  4. Marshall (1972), p. 142.
  5. Marshall (1972), p. 142, 145.
  6. Marshall (1972), p. 142, 258–259.
  7. Lane (2010), p. 98.
  8. Casserley & Johnston (1966), p. 115.
  9. Ian Allan ABC of British Railways Locomotives, 1948 edition, part 3, page 42

Sources and further reading
  • Casserley, H. C. & Johnston, Stuart W. (1966). Locomotives at the Grouping 3: London, Midland and Scottish Railway. Shepperton, Surrey: Ian Allan. ISBN 0-7110-0554-0.
  • Lane, Barry C. (2010). Lancashire & Yorkshire Railway Locomotives. Pendragon. ISBN 9781899816170.CS1 maint: ref=harv (link)
  • Marshall, John (1972). The Lancashire & Yorkshire Railway, volume 3. Newton Abbot: David & Charles. ISBN 0-7153-5320-9.CS1 maint: ref=harv (link)
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