Furness Railway 115 class

The Furness Railway 115 class was a class of five 4-6-4 (or Baltic) tank locomotives of the Furness Railway. They were designed by David Rutherford[1] 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.[2]

Furness Railway 115 class
FR 115 class
Type and origin
Power typeSteam
DesignerDavid Rutherford
BuilderKitson and Company
Serial number5292–5296
Build date1920-1921
Total produced5
Specifications
Configuration:
​
 • Whyte4-6-4T
 • UIC2′C2′ n2t
Gauge4 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)
Wheelbase40 ft 9 in (12.421 m)
Height13 ft 6 in (4.115 m)
Loco weight92.75 long tons (94.24 t)
Fuel typeCoal
Water cap2,800 imp gal (13,000 l; 3,400 US gal)
Boiler pressure170 psi (1.17 MPa)
CylindersTwo, inside
Cylinder size19 1⁄2 in × 26 in (495 mm × 660 mm)
Valve gearStephenson
Performance figures
Tractive effort21,006 lbf (93.44 kN)
Career
Operators
ClassFR: 115
Power classLMS: 3P
Numbers
  • FR: 115-119
  • LMS: 11100–11104
Withdrawn1934–1940
DispositionAll scrapped

They were the only Baltic tank locomotives in Britain with inside cylinders, and the only ones to lack a superheater.[3]

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 All were withdrawn between 1934 and 1940 and none are preserved.

Numbering
Table of locomotives[4][3]
Date new FR number LMS number Date Withdrawn
1920 115 11100 July 1935
1920 116 11101 July 1935
1920 117 11102 November 1934
1920 118 11103 1940
1921 119 11104 May 1935
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See also

References
  1. "Brief Biographies of Mechanical Engineers". Steamindex.com. Retrieved 23 January 2013.
  2. "Furness Railway locomotive history". Steamindex.com. 30 October 2007. 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) [1966]. Locomotives at the Grouping 3: London, Midland and Scottish Railway. Shepperton, Surrey: Ian Allan. ISBN 0-7110-0554-0.
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