Caledonian Railway 944 Class

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Caledonian Railway 944 Class
Caledonian Railway 944 Class No. 950.jpg
Works Photograph of C.R. No. 950
Type and origin
Power typeSteam
Designer William Pickersgill
Builder North British Locomotive Company, Hyde Park Works
Serial number21480-21491
Build date1917
Total produced12
Specifications
Configuration:
   Whyte 4-6-2T
Gauge 4 ft 8+12 in (1,435 mm)
Driver dia.5 ft 9 in (1.75 m) [1]
Loco weight91 long tons 13 cwt (205,300 lb or 93.1 t) [1]
Boiler pressure170 psi (1,172 kPa) [1]
Cylinders Two, outside
Cylinder size 19.5 in × 26 in (495 mm × 660 mm) [1]
Valve gear Stephenson
Performance figures
Tractive effort 20,804 lbf (92.54 kN) [1]
Career
Operators CR   LMS   BR
Class CR: 944
Power classLMS: 4P
Withdrawn1946-1953
DispositionAll scrapped

The Caledonian Railway 944 Class were 4-6-2T passenger tank locomotives designed by William Pickersgill and built in 1917, at the North British Locomotive Company's Hyde Park Works in Glasgow. They were the Caledonian Railway's only Pacific-type.

Contents

Overview

Although the Caledonian Railway built a long and successful series of small 0-4-4T passenger tank engines, the twelve locomotives of the 944 Class were the only large passenger tanks operated by the company. They shared much of their design with the contemporary 60 Class 4-6-0s. [2] They were originally used on the Inverclyde Line and so gained the nickname 'Wemyss Bay Pugs' amongst enginemen.

The locomotives passed into the ownership of the London, Midland and Scottish Railway (LMS) upon its formation in 1923, and were repainted from Caledonian blue into LMS crimson lake livery, although within a few years this gave way to lined black livery. They were later displaced from the Inverclyde line by LMS Fowler and Fairburn 2-6-4Ts and by the time of nationalisation in 1948, the surviving locomotives were all allocated to Beattock shed, primarily for banking duties on Beattock Summit. They were all withdrawn and scrapped between 1946 and 1953.

Numbering and locomotive histories

CR no.LMS no.BR no.Builder's no.DeliveredWithdrawn
9441535055350NBL 2148003/191704/1952
94515351(55351)NBL 2148103/191712/1948
9461535255352NBL 2148201/191703/1952
9471535355353NBL 2148301/191708/1951
9481535455354NBL 2148401/191708/1949
94915355(55355)NBL 2148501/191701/1948
9501535655356NBL 2148601/191706/1950
95115357NBL 2148701/191707/1946
95215358NBL 2148804/191705/1946
9531535955359NBL 2148904/191710/1953
9541536055360NBL 2149005/191702/1952
9551536155361NBL 2149105/191706/1952

sources: BritishSteam, [3] Longworth (2005) p167 [4]

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References

  1. 1 2 3 4 5 Casserley, H. C. & Johnston, S.W. (1966), Locomotives at the Grouping 3: London Midland and Scottish, Ian Allan, p.160
  2. Essery, Bob & Jenkinson, David (1986), An Illustrated History of L.M.S. Locomotives, Volume Three: Absorbed Pre-Group Classes, Northern Division, OPC, p.61
  3. "BritishSteam locomotive information". BritishSteam.com. Archived from the original on 4 April 2013. Retrieved 19 March 2016.
  4. Longworth, Hugh (2005), British Railways Steam Locomotives 1948-1968, Oxford Publishing Co., p.167