L&YR Class 24

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L&YR Class 24
L&YR Rapid Shunter 11535 in 1948 - geograph-2217586 (cropped).jpg
No. 11535 with wooden dumb buffers at Bank Hall Locomotive Depot in 1948
Type and origin
Power typeSteam
Designer Aspinall
Build date1897
Total produced20
Rebuild date1917–1919
Number rebuilt7
Specifications
Configuration:
​
 •  Whyte 0-6-0 T
Gauge 4 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)
Cylinders 2 outside
Cylinder size 17 in × 24 in (432 mm × 610 mm)
Valve gear Allan
Performance figures
Tractive effort 17,470 lbf (77.7 kN)
Career
Operators L&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
  • Rapid Shunters [1]
  • Klondykes [2]
Locale London Midland Region
Withdrawn1914–1917, 1926–1936, 1954–1961
DispositionAll scrapped

The L&YR Class 24 was a class of short-wheelbase 0-6-0 T 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 Twenty locomotives were built, but six were withdrawn between 1917 and 1922.

Contents

They were notable for being the first design of a locomotive on the L&YR to use a Belpaire firebox. [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 0-4-0 ST 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] These locomotives – together with the Improved Precedent Class on the London and North Western Railway – were the last locomotives built with the Allan straight link motion. [5]

Modifications

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. [6]

Seven of the remaining engines were re-built with Barton Wright type round top boilers around the 1917–1919 period. [7]

Fleet

Table of locomotives [8]
L&YR no.LMS no.BR no.Withdrawn
13511916 or earlier
1352115331926
1353115341928
13541914
135511535515351956
135611536515361954
13571917
135811537515371961
1359115381932
1360115391926
4931914
494115401931
495115411926
496115421931
499115431932
50111544515441959
5031914
505115451936
50611546515461959
5071914

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. [9] After further withdrawals, 5 locomotives passed to British Railways (BR) in 1948 and they were numbered as shown in the table above. [10] All had been withdrawn by 1961. [8] None were preserved.

See also

References

  1. ↑ Lane (2010), p. 94, 96.
  2. 1 2 Lane (2010), p. 96.
  3. 1 2 3 Lane (2010), p. 94.
  4. ↑ Marshall (1972), p. 142.
  5. ↑ Ahrons (1987), p. 311.
  6. ↑ Marshall (1972), p. 142, 145.
  7. ↑ Marshall (1972), p. 142, 258–259.
  8. 1 2 Lane (2010), p. 98.
  9. ↑ Casserley & Johnston (1966), p. 115.
  10. ↑ Ian Allan ABC of British Railways Locomotives, 1948 edition, part 3, page 42

Sources and further reading

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