LSWR D15 class
| LSWR/SR D15 class British Railways | |
|---|---|
| Class | LSWR/SR/BR: D15 |
| Power class | LSWR/SR: D BR: 3P |
| Numbers | SR & LSWR: 463–472 BR: 30463–30472 |
| Locale | Great Britain |
| Withdrawn | 1951–1956 |
| Disposition | All scrapped |
The LSWR D15 class 4-4-0 was the last steam locomotive design by Dugald Drummond for the London and South Western Railway in 1912. By 1912, Dugald Drummond had built several classes of unsuccessful 4-6-0 express passenger locomotives. The result of these failures was that when he designed what was to be his last class in 1911, a new 4-4-0 design emerged from Eastleigh Works in February 1912, with what was to be the first of his D15 class.
Technical details
Boiler
In line with the typical Drummond layout, the D15s had a short
Water feed
An exhaust steam feedwater heater was provided and the boiler fed by duplex pumps located on the frames, between the coupled wheels.
Tenders
The class was initially given the "intermediate" type of eight-wheel, double bogie tender with inside bogie frames carrying 4 tons (4.06 tonnes) of coal and 4,500 gallons (20.5m3), due to the lack of water troughs on the line. By 1923, the eight-wheeled tenders had been replaced by six wheeled 3,500 gallon (15.9m3) versions transferred from K10 and L11 locomotives.
Superheaters
After Drummond's death,
Construction history
| Year | Order | Quantity | LSWR numbers | Notes |
|---|---|---|---|---|
| 1912 | D15 |
5 |
463–467 | |
| 1912 | G15 |
5 |
468–472 |
Operational details
Contrary to Drummond's previous 4-6-0 designs, the D15s performed exceptionally well and were put to work on trains to Bournemouth, where many drivers noted their superior operational characteristics when compared to the T14 class 4-6-0s. This was due to a marked reduction in coal, water and oil consumption, and easier maintenance. However, with the succession of Urie, no further D15s were constructed, as he preferred to concentrate on 4-6-0 designs.
These successful locomotives worked, in the main, out of
Accidents and incidents
- In August 1949, locomotive No. 467 was hauling a train which overran signals at
Livery and numbering
LSWR and Southern
Under the LSWR, the D15s were outshopped in the LSWR Passenger Sage Green livery with purple-brown edging, creating panels of green.[1][page needed] This was further lined in white and black with 'LSWR' in gilt on the tender tank sides. They were numbered 463–472 in a continuous block.
When transferred to Southern Railway ownership after 1923, the locomotives carried Richard Maunsell's darker version of the LSWR livery.[3][page needed] The LSWR standard gilt lettering was changed to yellow with 'Southern' on the water tank sides. The locomotives also featured black and white lining.[4]
Post-1948 (nationalisation)
Livery after Nationalisation was initially Southern freight livery with 'British Railways' on the tender, and an 'S' prefix on the number. The class was subsequently outshopped in BR Mixed Traffic Black with red and white lining, with the BR crest on the tender.
| Year | Quantity in service at start of year |
Quantity withdrawn |
Locomotive numbers | Notes |
|---|---|---|---|---|
| 1951 | 10 | 2 | 30463/69 | |
| 1952 | 8 | 4 | 30466/68/70/72 | |
| 1954 | 4 | 2 | 30464/71 | |
| 1955 | 2 | 1 | 30467 | |
| 1956 | 1 | 1 | 30465 |
References
Notes
Bibliography
- Bradley, D. L. (1986). An illustrated history of LSWR Locomotives: the Drummond Classes. Didcot, Oxon: Wild Swan Publications. ISBN 0-906867-42-8.
- Haresnape, Brian & Rowledge, Peter (1982). Drummond Locomotives: A Pictorial History. Shepperton, Surrey: Ian Allan Limited. pp. 91–93. ISBN 0-7110-1206-7.
- Longworth, Hugh (2005). British Railway Steam Locomotives: 1948–1968. Oxford Publishing Company. ISBN 0-86093-593-0.
- Swift, Peter (2006). Locomotives in detail volume 4: Maunsell 4-6-0 King Arthur Class. Hinkley: Ian Allan Publishing. ISBN 0-7110-3086-3.
