Caledonian Railway 812 and 652 Classes

Caledonian Railway 812 and 652 Classes
'812' class No. 17596 at Corkerhill Locomotive Depot 15 August 1948
Type and origin
Power type Steam
Designer John F. McIntosh
Builder CR St. Rollox Works,
Dübs & Co. (15),
Neilson, Reid & Co. (20),
Sharp Stewart (15)
Build date 1899–1909
Total produced 96
Specifications
Configuration:
 ​
 • Whyte 0-6-0
 • UIC Cn
Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge
Driver dia. 5 ft 0 in (1.524 m)
Length 56 ft 2 in (17.12 m)
Loco weight 45.65 long tons (46.38 t; 51.13 short tons)
Boiler pressure 160 psi (1,100 kPa)
Superheater None
Cylinders Two, inside
Cylinder size 18.5 in × 26 in (470 mm × 660 mm)
Valve gear Stephenson
Valve type Slide valves
Performance figures
Tractive effort 20,170 lbf (89.7 kN)
Career
Operators CR • LMS • BR
Class CR: 812 and 652
Power class LMS/BR: 3F
Number in class 1 January 1923: 96
1 January 1948: 93
Withdrawn 1948–1963
Preserved No. 828
Disposition One preserved, remainder scrapped

The Caledonian Railway 812 and 652 Classes were 0-6-0 steam tender locomotives designed by John F. McIntosh for the Caledonian Railway and introduced in 1899. They had the same boiler type as the 721 “Dunalastair” Class 4-4-0s.

Construction

96 locomotives were built, as follows:

Table of locomotives, 812 Class
YearQuantityCR Nos.BuilderBuilders No.LMS Nos.BR Nos.Notes
189917812–828CR, St. RolloxY05417550–1756657550–57566
189910829–838Neilson, Reid & Co.5613–562217567–1757657567–57576
190010839–848Neilson, Reid & Co.5623–563217577–1758657577–57586
190015849–863Sharp Stewart4633–464717587–1760157587–57601
c.190015864–878Dübs & Co.3880–389417602–1761657602–57616
189912282–293CR, St. RolloxY05817617–1762857617–57628
Table of locomotives, 652 Class
YearQuantityCR Nos.BuilderBuilders No.LMS Nos.BR Nos.Notes
19088652–659CR, St. RolloxY087-Y08617629–1763657629–57636
19084662–665CR, St. RolloxY08617637–1764057637–57640
19094325–328CR, St. RolloxY08617641–1764457641–57644
19091661CR, St. RolloxY0861764557645

Seventeen were fitted with the Westinghouse air brakes for passenger train working, including the only surviving engine of the class, No. 828. All 96 passed to the London, Midland and Scottish Railway at the 1923 grouping. Only three, 17567, 17598 and 17610, had been withdrawn by the time of nationalisation in 1948. The last locomotive in service was not withdrawn until 1963.

Preservation

Locomotive 828 on the Severn Valley Railway, 25 March 2012

Locomotive 828 (LMS 17566, BR 57566) is the sole survivor of the class and is an important example of Scottish industrial heritage. It is based at the Strathspey Railway. It was returned to regular service in 2010 and then again in March 2017 following heavy repairs.

Belgian derivatives

A Class 30 engine used by the Railway Operating Division

Belgian State Railways (SNCB-NMBS) derived three series of steam locomotives (891 units) from the class 812 between 1899 and 1914. They had a shallower firebox, able to burn semi-bituminous coal and briquettes, allowing a shorter wheelbase due to its positioning above the rear axle. There were three classes

  • Type 30 – first variant with several details in common with the Caledonian engines (cab windows, gauges and tender coupling). 82 built between 1899 and 1901.
  • Type 32 (later renamed Type 44) – more powerful and fitted with a Belgian cab, higher steam pressure, new gauges and tender coupling. 502 built between 1901 and 1910
  • Type 32S (later renamed Type 41) – same features but improved with a Schmidt superheater. 307 built between 1905 and 1914

Until 1909, they were the only new engines used with freight trains. They were also used on suburban and local passenger trains and some expresses on hilly sections. Most of them were retired between 1947 and 1959. Some of them were then used as stationary boilers and two of them (44.221 and 41.195) survive in museums. A third one (44.021), kept as a parts donor, was cut up for scrap in 2002[1].

In fiction

In The Railway Series children's books by the Rev. W. Awdry, the characters Donald and Douglas ("the Scottish twins"), are based on the Caledonian 812 class. They carried fictional numbers (57646 and 57647) before coming to Sodor. This numbering places them as the youngest of the 652 class (see table above). [2]

References

  1. ↑ http://www.internationalsteam.co.uk/tales/belgiumtales01.htm
  2. ↑ "Donald and Douglas". (The real prototype locomotives that inspired the Rev W Awdry). The Real Lives of Thomas the Tank Engine. Retrieved 25 January 2011.
  • Casserley, H. C. & Johnston, Stuart W. (1974) [1966]. Locomotives at the Grouping 3: London, Midland and Scottish Railway. Shepperton, Surrey: Ian Allan. pp. 178–179. ISBN 0-7110-0554-0.

See also

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