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Furness Railway 115 class
FR 115 class
Type and origin Power type Steam Designer David Rutherford Builder Kitson and Company Serial number 5292–5296 Build date 1920-1921 Total produced 5
Specifications Configuration: ​  • Whyte 4-6-4T  • UIC 2′C2′ n2t Gauge 4 ft 8+1⁄2 in (1,435 mm) Driver dia. 5 ft 8 in (1.727 m) Trailing dia. 3 ft 2 in (0.965 m) Wheelbase 40 ft 9 in (12.421 m) Height 13 ft 6 in (4.115 m) Loco weight 92.75 long tons (94.24 t) Fuel type Coal Water cap. 2,800 imp gal (13,000 L; 3,400 US gal) Boiler pressure 170 psi (1.17 MPa) Cylinders Two, inside Cylinder size 19+1⁄2 in × 26 in (495 mm × 660 mm) Valve gear Stephenson
Performance figures Tractive effort 21,006 lbf (93.44 kN)
Career Operators Furness Railway → London, Midland and Scottish Railway Class FR: 115 Power class LMS: 3P Numbers FR: 115-119 LMS: 11100–11104 Withdrawn 1934–1935, 1940 Disposition All scrapped

The Furness Railway 115 class (unofficially classified N1 by Bob Rush), was a class of five 4-6-4 (or Baltic) tank locomotives of the Furness Railway. They were designed by David Rutherford and built by Kitson and Company in 1920–1921. They were nicknamed "Jumbos" and the author Bob Rush gave them the unofficial classification N1. Their main duty was to haul express passenger trains between Carnforth and Whitehaven.

They were the only Baltic tank locomotives in Britain with inside cylinders, and the only ones to lack a superheater.

LMS ownership

All five passed to the London, Midland and Scottish Railway at the Grouping in 1923. The LMS gave them the classification 3P. All but one were withdrawn between 1934 and 1935, with the final member being withdrawn in 1940. All members of the class were scrapped.

Numbering

See also

• Locomotives of the Furness Railway

References

1. "Brief Biographies of Major Mechanical Engineers". steamindex.com. Rutherford, David L. Retrieved 23 January 2013.
2. "Furness Railway: locomotive history". steamindex.com. 30 October 2007. Class N1 4-6-4 side tank locomotives: Jumbos. Retrieved 23 January 2013.
3. ^ Baxter 1984, p. 223.
4. Casserley & Johnston 1966.

• Baxter, Bertram (1984). Baxter, David (ed.). British Locomotive Catalogue 1825–1923, Volume 4: Scottish and remaining English Companies in the LMS Group. Ashbourne, Derbyshire: Moorland Publishing Company.
• Casserley, H. C. & Johnston, Stuart W. (1974) . Locomotives at the Grouping 3: London, Midland and Scottish Railway. Shepperton, Surrey: Ian Allan. ISBN 0-7110-0554-0.

External links

• Photograph of 115

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• 4-6-4T locomotives
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• Railway locomotives introduced in 1920
• Scrapped locomotives
• 2′C2′ n2t locomotives
• Standard gauge steam locomotives of Great Britain
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