The Midland Railway 1252 class was a class of thirty 0-4-4T locomotives built by Neilson and Company in 1875–1876 to the design of Samuel Waite Johnson. They were a development of the 6 Class. Originally numbers 1262–1281 and 1252–1261. Under the Midland Railway's 1907 renumbering scheme they became 1236–1265.

This article relies largely or entirely on a single source. (December 2014)

Midland Railway 1252 class
LMS 1251 at Ashchurch, September 1946
Type and origin Power type Steam Designer Samuel W. Johnson Builder Neilson and Company Build date 1875–1876 Total produced 30
Specifications Configuration: ​  • Whyte 0-4-4T  • UIC B2′ n2t Gauge 4 ft 8+1⁄2 in (1,435 mm) Driver dia. 5 ft 6+1⁄2 in (1,689 mm) Trailing dia. 3 ft 0 in (914 mm) Loco weight 53 long tons 4 cwt (119,200 lb or 54.1 t) Boiler MR type C Boiler pressure 140 lbf/in2 (0.97 MPa) Cylinder size 17 in × 24 in (432 mm × 610 mm) Valve gear Stephenson
Performance figures Tractive effort 13,810 lbf (61.43 kN)
Career Operators MR » LMS » BR Power class 1P Withdrawn 1920–1954 Disposition All scrapped

Construction history

The Midland used nominal 5-foot-6+1⁄2-inch (1,689 mm) diameter driving wheels for this class, whereas in all later engines (starting with the 1532 Class) they used nominal 5-foot-3-inch (1,600 mm) diameter wheels. They were given the power classification 1P.

Service history

All but one locomotive passed to the London, Midland and Scottish Railway (LMS) at the 1923 grouping; and nine, Nos 1239/46/47/49/51/52/55/60/61 were still in LMS stock at the end of 1947 and passed to British Railways (BR). BR allocated them numbers 58030–58038, though only three 58033/36/38 received them before withdrawal. All members of the class were withdrawn by 1954, and all were scrapped.

References

• Baxter, Bertram (1982). Baxter, David (ed.). British Locomotive Catalogue 1825–1923. Vol. 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. pp. 27–28. ISBN 0-7110-0554-0.

Further reading

• Bob Essery and David Jenkinson An Illustrated Review of Midland Locomotives vol 3
• Bob Essery and David Jenkinson An Illustrated History of LMS Locomotives vol 4