| Highland Railway Loch or B class |
|---|
| Type and origin |
|---|
| Power type |
Steam |
|---|
| Designer |
David Jones |
|---|
| Builder |
Dübs & Co. (15)
North British Locomotive (3) |
|---|
| Serial number |
Dübs:3392–3406
NBL: 21456–21458 |
|---|
| Build date |
1896 (15), 1917 (3) |
|---|
| Total produced |
18 |
|---|
|
| Specifications |
|---|
Configuration:
|
|
|---|
| • Whyte |
4-4-0 |
|---|
| • UIC |
2′B n2 |
|---|
| Gauge |
4 ft 8 1⁄2 in (1,435 mm) |
|---|
| Leading dia. |
3 ft 3 in (0.991 m) |
|---|
| Driver dia. |
6 ft 3 1⁄2 in (1.918 m) |
|---|
| Loco weight |
54 long tons 10 cwt (122,100 lb or 55.4 t) |
|---|
| Water cap |
3,000 imp gal (14,000 l; 3,600 US gal) |
|---|
| Boiler |
4 ft 4 7⁄8 in (1.34 m) diameter |
|---|
| Boiler pressure |
175 lbf/in2 (1.21 MPa) |
|---|
| Heating surface |
1,295 sq ft (120.3 m2) |
|---|
| Cylinders |
Two, outside |
|---|
| Cylinder size |
19 in × 24 in (483 mm × 610 mm) |
|---|
| Valve gear |
Allan |
|---|
| Valve type |
New: piston valves
Rebuilt: Balanced slide valves |
|---|
|
|
|
| Career |
|---|
| Operators |
Highland Railway
→ LMS → BR |
|---|
| Class |
HR: Loch; B (from 1901) |
|---|
| Power class |
LMS: 2P |
|---|
| Withdrawn |
1930–1950 |
|---|
| Disposition |
All scrapped |
|---|
|
The Highland Railway Loch class locomotives were large 4-4-0s normally used north of Inverness. They were introduced in 1896, to the design of David Jones. Fifteen were built by Dübs and Company in Glasgow, all going into traffic between July and September 1896. Three more were built in 1917 by Dübs' successor, the North British Locomotive Company (NBL).
Design
They had the typical Jones appearance with outside cylinders, domed cab roof, louvred chimney, but, as with the Jones Goods class 4-6-0, the Allan style front framing was dispensed with. Allan valve gear was still used.
Numbering
- Built by Dübs in 1896
| HR number | Name | LMS number | Withdrawn | Notes |
|---|
| 119 | Loch Insh | 14379 | 1948 | Name removed in 1944; reinstated in 1946. BR allocated number 54379 never carried |
| 120 | Loch Ness | 14380 | 1940 | |
| 121 | Loch Ericht | 14381 | 1940 | |
| 122 | Loch Moy | 14382 | 1940 | |
| 123 | Loch an Dorb | 14383 | 1934 | |
| 124 | Loch Laggan | 14384 | 1938 | |
| 125 | Loch Tay | 14385 | 1950 | BR allocated number 54385 never carried |
| 126 | Loch Tummel | 14386 | 1938 | |
| 127 | Loch Garry | 14387 | 1930 | |
| 128 | Loch Luichart | 14388 | 1930 | |
| 129 | Loch Maree | 14389 | 1931 | |
| 130 | Loch Fannich | 14390 | 1937 | |
| 131 | Loch Shin | 14391 | 1941 | |
| 132 | Loch Naver | 14392 | 1947 | |
| 133 | Loch Laoghal | 14393 | 1934 | Renamed Loch Laochal at unknown date |
- Built by NBL in 1917
| HR number | Name | LMS number | Withdrawn | Notes |
|---|
| 70 | Loch Ashie | 14394 | 1936 | |
| 71 | Loch Garve | 14395 | 1935 | |
| 72 | Loch Ruthven | 14396 | 1934 | |
These were needed primarily for the increased traffic on the Kyle line where they were the heaviest locomotives permitted. This period was when the initial traffic of the United States effort in World War I was flowing, and much was brought to the west coast of Scotland in an effort to reduce the effect of the U-Boat menace. The trains ran from Kyle to Invergordon so it was a wholly HR traffic.
Transfer to BR
Only two survived into British Railways (BR) ownership in 1948. Neither received their allocated BR number before being withdrawn in 1948 ('Loch Insh') and 1950 ('Loch Tay').
References
- 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. pp. 194–195.
- Casserley, H. C. & Johnston, Stuart W. (1974) [1966]. Locomotives at the Grouping 3: London, Midland and Scottish Railway. Shepperton, Surrey: Ian Allan. p. 141. ISBN 0-7110-0554-0.