LNWR Claughton Class
LNWR Claughton Class
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LNWR Claughton Class
No. 2222 Sir Gilbert Claughton in photographic grey
Type and origin
Power typeSteam
DesignerCharles Bowen Cooke
BuilderCrewe Works
Serial number5117, 5138–5146, 5227–5246, 5267–5296, 5502–5571
Build date1913–1921
Total produced130
Specifications
Configuration:
​
 • Whyte4-6-0
 • UIC2′C h4
Gauge4 ft 8+1⁄2 in (1,435 mm)
Leading dia.3 ft 3 in (0.991 m)
Driver dia.6 ft 9 in (2.057 m)
Loco weight77.75 long tons (79.00 t)
Fuel capacityCoal
Boiler pressure
  • 175 lbf/in2 (1.21 MPa)
  • 200 lbf/in2 (1.38 MPa) †‡
Heating surface2,232 sq ft (207.4 square metres)
SuperheaterSchmidt
CylindersFour
Cylinder size15+3⁄4 in × 26 in (400 mm × 660 mm)
Valve gear
Valve typePiston valve (locomotive)
Loco brakeVacuum brake
Train brakesVacuum brake
Performance figures
Tractive effort
  • 27,072 lbf (120.42 kN)
  • 29,570 lbf (131.53 kN) †‡
Career
Operators
Power classLMS: 5P, 5XP ‡†
Withdrawn1929–1941, 1949
DispositionAll scrapped

The London and North Western Railway (LNWR) Claughton Class was a class of 4-cylinder express passenger 4-6-0 steam locomotives.

History

[edit]

The locomotives were introduced in 1913, the first of the class No. 2222 was named in honour of Sir Gilbert Claughton, who was the Chairman of the LNWR at that time. A total of 130 were built, all at Crewe Works up to 1921. Author Brian Reed points out that weight restrictions and equipment limitations at Crewe limited the size of the boiler, hence engine power. Cylinder design and valve events were not optimal, so the Claughton Class was a mediocre performer on the track.[1]

LMS No. 5986 c.1928, with enlarged boiler

The LNWR reused numbers and names from withdrawn locomotives, with the result that the numbering was completely haphazard. An exception was made for the LNWR's war memorial locomotives. There were two of these: No. 2097 (built in 1917) was briefly named Patriot for a short period in January 1920; and the name was later given to a new locomotive numbered 1914, which entered service in May 1920 (ordinarily, this locomotive would have been numbered 69, which had been unused since January 1920; but instead, Renown Class locomotive No. 1914 was renumbered 1257 in order to release its old number[2]). The nameplates of both locomotives also bore the inscription "In Memory of the Fallen L & N W R Employees 1914–1919".[3] Remembrance Day ceremonies at Rugby featured no. 1914 until its name was transferred to LMS Patriot Class No. 5500. The LMS renumbered them into the more logical series 5900–6029, No. 1914 becoming 5964.[4] Twenty were rebuilt by the LMS with larger boilers, and ten of these had Caprotti valve gear. Twelve others were rebuilt as the initial engines of the Patriot Class, though not much material was reused.

With the introduction of the LMS Royal Scot Class in 1927, the Claughtons' main work had been taken away and many were transferred to the Midland Division. At the end of 1937, all but four, Nos. 5946, 6004, 6017 and 6023, had been withdrawn. These were retained in service until further repair became unworthwhile; three of them were withdrawn in 1940–41, leaving No. 6004, which was regularly used to haul fitted freight trains between London and Edge Hill, becoming increasingly dirty.[5] Inherited by British Railways in 1948, it was allocated the BR number 46004 but was withdrawn in 1949 without it being applied. None were preserved.

Accidents and incidents

[edit]
  • On 12 February 1929, locomotive No. 5977 was hauling an express passenger train that was in a head-on collision with a freight train, hauled by LMS Fowler 4F 0-6-0 No. 4491, at Doe Hill station, Derbyshire. The driver and fireman of the express were killed.[6][7]
  • On 6 March 1930, locomotive No. 5971 was hauling a passenger train that departed from Culgaith station, Cumberland against signals. It subsequently collided with a ballast train, hauled by Midland Railway 3835 Class 0-6-0 No. 4009 at Langwathby. Two people were killed and four were seriously injured.[8][9]
  • On 13 March 1935, locomotive No. 5946 was hauling an express freight train which stopped in the section between Nash Mills and King's Langley signalboxes, Hertfordshire due to an engine defect. A milk train, hauled by LMS Compound 4-4-0 No. 1165, ran into the rear of it due to a signalman's error. Two other freight trains, one hauled by LMS Patriot Class 4-6-0 No. 5511 and the other hauled by LMS Class 7F 0-8-0 No. 9598, collided with the wreckage. One person was killed.[10][11]

Details

[edit]
LNWR
No. 		Crewe
Works
No. 		LMS
No. 		Date
built 		Name Date Named Withdrawn Notes
2222 5117 5900 January 1913 Sir Gilbert Claughton From new March 1935
1161 5138 5901 May 1913 Sir Robert Turnbull From new May 1933
1191 5139 5902 May 1913 Sir Frank Ree From new November 1930
1319 5140 5907 May 1913 Sir Frederick Harrison From new January 1933
1327 5141 5908 May 1913 Alfred Fletcher From new September 1936 ‡
21 5142 5903 June 1913 Duke of Sutherland From new April 1933
163 5143 5904 June 1913 Holland Hibbert From new December 1934
650 5144 5905 June 1913 Lord Rathmore From new February 1933
1159 5145 5906 July 1913 Ralph Brocklebank From new February 1937 †
2046 5146 5909 June 1913 Charles N. Lawrence From new February 1935
250 5227 5910 August 1914 J. A. Bright From new April 1937 †
260 5228 5911 August 1914 W. E. Dorrington From new March 1934
1131 5229 5912 August 1914 Lord Faber From new February 1935
1429 5230 5913 September 1914 Colonel Lockwood From new August 1934
2239 5231 5918 September 1914 Frederick Baynes From new March 1935
209 5232 5914 September 1914 J. Bruce Ismay From new December 1934
668 5233 5915 September 1914 Rupert Guinness From new November 1934
856 5234 5916 September 1914 E. Tootal Broadhurst From new December 1932
1567 5235 5917 October 1914 Charles J. Cropper From new September 1934
2401 5236 5919 October 1914 Lord Kitchener From new September 1934
511 5337 5920 July 1916 George Macpherson From new April 1935
695 5338 5921 July 1916 Sir Arthur Lawley From new November 1934
968 5239 5922 July 1916 Lord Kenyon From new September 1934
1093 5340 5923 July 1916 Guy Calthrop From new June 1935 Sir Guy Calthrop from March 1919
1345 5341 5924 August 1916 James Bishop From new September 1934
2174 5342 5925 August 1916 E. C. Trench From new May 1933
2204 5343 5926 August 1916 Sir Herbert Walker K.C.B. From new January 1933
2221 5344 5927 August 1916 Sir Francis Dent From new December 1936 ‡
2338 5345 5928 August 1916 Charles H. Dent From new January 1934
2395 5346 5929 September 1916 J. A. F. Aspinall From new March 1935
37 5367 5930 February 1917 G. R. Jebb From new October 1934
154 5368 5931 March 1917 Captain Fryatt From new March 1934
155 5369 5932 March 1917 I. T. Williams From new April 1935 Sir Thomas Williams from December 1919
162 5370 5933 March 1917 December 1932
186 5371 5934 March 1917 January 1935
713 5372 5935 March 1917 February 1933
1334 5373 5936 April 1917 August 1932
2042 5374 5937 April 1917 November 1934
2097 5375 5938 April 1917 February 1935
2230 5376 5939 May 1917 Clio July 1922 June 1935
1019 5377 5940 May 1917 Columbus February 1922 September 1934
1355 5378 5941 May 1917 August 1934
2366 5379 5942 May 1917 August 1932
2373 5980 5943 May 1917 Tennyson January 1922 August 1934
2411 5381 5944 June 1917 February 1933
2420 5382 5945 June 1917 Ingestre January 1923 April 1934
2427 5383 5946 June 1917 Duke of Connaught January 1922 February 1941 ‡
2431 5384 5947 June 1917 February 1935
2445 5385 5948 July 1917 Baltic March 1923 April 1937 ‡
2450 5386 5949 July 1917 August 1932
116 5387 5950 July 1917 October 1934
159 5388 5951 August 1917 October 1935
171 5389 5952 August 1917 December 1932
986 5390 5953 August 1917 Buckingham March 1922 September 1936 †
1085 5391 5954 August 1917 December 1932
1103 5392 5955 September 1917 May 1935
2122 5393 5956 September 1917 March 1934
2368 5394 5957 September 1917 February 1936 ‡
2416 5395 5958 September 1917 October 1932
2426 5396 5959 October 1917 June 1932
1914 5502 5964 January 1920 Patriot
In memory of the Fallen LNWR Employees 1914-1919 		From new May 1935
69 5503 5960 January 1920 March 1934
178 5504 5961 January 1920 October 1934
194 5505 5962 January 1920 December 1935 ‡
972 5506 5963 January 1920 December 1932
1177 5507 5966 January 1920 Bunsen March 1922 October 1932
2179 5508 5969 January 1920 September 1934
2499 5509 5970 February 1920 Patience August 1922 December 1935 †
2511 5510 5971 February 1920 Croxteth January 1923 December 1930 Locomotive badly damaged in head-on collision between Culgaith and Langwathby on 6 March 1930.[9]
1599 5511 5968 February 1920 John O’Groat August 1922 January 1935
484 5512 5965 February 1920 September 1934
1407 5513 5967 February 1920 L./Cpl. J. A. Christie, V.C. February 1922 November 1934
1726 5514 5972 March 1920 May 1937 †
1741 5515 5973 March 1920 December 1932
1747 5516 5974 March 1920 August 1932
2035 5517 5976 March 1920 Private E. Sykes, V.C. February 1922 March 1935 Name transferred to 6015 in April 1926
2083 5518 5977 March 1920 April 1929 Locomotive badly damaged in head-on collision near Doe Hill station on 12 February 1929.[12]
2231 5519 5978 March 1920 May 1934
2268 5520 5979 March 1920 Frobisher August 1922 April 1934
12 5521 5975 April 1920 Talisman January 1923 May 1937 ‡
85 5522 5980 April 1920 January 1935
98 5523 5981 April 1920 June 1934
103 5524 5982 April 1920 November 1932
201 5525 5983 April 1920 October 1932
499 5526 5984 May 1920 October 1935
808 5527 5985 May 1920 June 1932
1092 5528 5986 May 1920 November 1935 †
1096 5529 5987 May 1920 August 1932
1097 5530 5988 May 1920 Private W. Wood, V.C. February 1922 May 1935 Name transferred to 6018 in April 1926
1133 5531 5989 May 1920 November 1934
2059 5532 5991 May 1920 C. J. Bowen-Cooke October 1920 February 1935
1326 5533 5990 June 1920 April 1935
2090 5534 5992 June 1920 October 1932
2095 5535 5993 June 1920 May 1936 †
2101 5536 5998 June 1920 August 1934
6 5537 5994 June 1920 June 1935
8 5538 5995 June 1920 June 1935
10 5539 5996 July 1920 February 1933
11 5540 5997 July 1920 March 1933
13 5541 5999 July 1920 Vindictive July 1922 June 1937 † Renumbered 2430 in October 1922.
Name removed in August 1936.
15 5542 6000 June 1920 March 1933
23 5543 6001 August 1920 October 1934
30 5544 6002 August 1920 Thalaba December 1922 September 1934
32 5545 6003 August 1920 October 1934
42 5546 6004 August 1920 Princess Louise February 1922 April 1949 † Name removed in June 1935, BR Number never applied.
36 5547 6005 August 1920 August 1932
68 5548 6006 August 1920 December 1932
102 5549 6007 August 1920 October 1934
110 5550 6008 September 1920 Lady Godiva May 1923 December 1932
119 5551 6009 September 1920 December 1934
149 5552 6010 March 1921 August 1932
150 5553 6011 March 1921 Illustrious May 1923 February 1933
152 5554 6012 March 1921 August 1932
156 5555 6013 March 1921 March 1936 ‡
157 5556 6014 April 1921 September 1934
158 5557 6015 April 1921 Private E. Sykes, V.C. April 1923 March 1933 Name transferred from 5976
161 5558 6016 April 1921 January 1935
169 5559 6017 April 1921 Breadalbane March 1923 October 1940 †
179 5560 6018 April 1921 Private W. Wood, V.C. April 1926 February 1933 Name transferred from 5988
180 5561 6019 April 1921 Llewellyn April 1923 December 1934
183 5562 6020 May 1921 July 1935
192 5563 6021 May 1921 Bevere July 1923 February 1934
205 5564 6022 May 1921 January 1933
207 5565 6023 May 1921 Sir Charles Cust December 1921 July 1941 ‡
208 5566 6024 May 1921 March 1935
210 5567 6025 May 1921 August 1935
211 5568 6026 June 1921 December 1932
517 5569 6027 June 1921 January 1933
1216 5570 6028 June 1921 September 1934
1220 5571 6029 June 1921 December 1935 ‡
  • † Locomotives fitted with larger boilers from 1928.
  • ‡ Locomotives fitted with Caprotti valve gear and larger boilers from 1928.

References

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

LNWR Claughton Class

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The LNWR Claughton Class was a class of 130 four-cylinder 4-6-0 express passenger steam locomotives designed by Charles J. Bowen Cooke for the London and North Western Railway (LNWR), with all examples constructed at Crewe Works between 1913 and 1921.[1][2] Named after Sir Gilbert Claughton, the LNWR's chairman at the time of their introduction, these locomotives featured a Belpaire firebox, high superheat, and Walschaerts valve gear, making them the largest and most powerful express tender engines built for the LNWR.[1][3] Designed for intensive heavy passenger services, particularly on routes north of Crewe such as the West Coast Main Line, the Claughtons had 81-inch (2,057 mm) driving wheels, four cylinders measuring 16 by 26 inches (406 by 660 mm), and a boiler pressure of 175 psi (1,210 kPa), producing a tractive effort of 24,446 lbf (108.8 kN).[1][2] The engine weighed approximately 79 long tons (80 tonnes), with a total weight including tender around 147 long tons (149 tonnes), and a combined heating surface of 2,232 square feet (207 m²), including 414 square feet (38 m²) from the superheater.[1] They demonstrated strong performance in trials, achieving indicated horsepower outputs up to 1,669 ihp on runs over challenging gradients like Shap Fell, though they were noted for high coal consumption and maintenance demands due to their complex four-cylinder arrangement.[2] Following the 1923 grouping, the class passed to the London, Midland and Scottish Railway (LMS), where most were withdrawn by the 1930s amid a shift to newer designs, but around 20 received rebuilds with larger boilers starting in 1928 to improve efficiency.[1][2] Ten of these rebuilt examples were further modified with Caprotti rotary camshaft valve gear in the late 1920s for better steam distribution, and some incorporated Kylälä exhaust systems or even three-cylinder conversions in experimental forms.[2][4] Twelve members of the class were ultimately nominally rebuilt into the initial LMS Patriot Class 4-6-0s, extending their influence into the post-war era, while the majority were scrapped by 1949, with none preserved in original form.[3]

Design and development

Background

The London and North Western Railway (LNWR) Claughton Class locomotives were introduced in 1913, marking a significant advancement in the company's express passenger fleet.[2] The class was named in honor of Sir Gilbert Claughton, who had served as LNWR Chairman since 1911, with the first locomotive, No. 2222 Sir Gilbert Claughton, entering service that year.[5][2] Designed by Chief Mechanical Engineer Charles Bowen Cooke, these 4-6-0 locomotives represented an evolution of the earlier Experiment Class, incorporating larger 6 ft 9 in driving wheels and a more powerful boiler to enhance performance on demanding routes.[2][6] The primary purpose of the Claughton Class was to meet the growing demands for faster and more reliable express passenger services on the West Coast Main Line, particularly between London Euston and Carlisle, where heavier train loads and competitive schedules required superior motive power.[6][2] This design addressed key limitations of older 4-6-0 types, such as the Precursor Class, which suffered from inadequate boiler capacity and insufficient power for sustained high-speed operation with increased loads north of Crewe.[2] By providing greater tractive effort and steaming capability, the Claughtons enabled the LNWR to handle these challenges more effectively, reducing reliance on double-heading and improving overall route efficiency.[2] A central aspect of the design philosophy involved resolving ongoing debates within LNWR engineering circles regarding compound versus simple expansion systems. Bowen Cooke ultimately favored a four-cylinder simple expansion configuration, with all cylinders driving the leading coupled axle, to prioritize reliability and ease of maintenance over the potential efficiency gains of compounding, which had proven problematic due to high-pressure boiler complexities and loading gauge restrictions.[2][6] This choice, influenced by observations of Great Western Railway 'Star' Class locomotives during a 1913 exchange, emphasized balanced power delivery and superheating for optimal express performance.[2]

Specifications

The LNWR Claughton Class locomotives featured a 4-6-0 wheel arrangement with 6 ft 9 in (81 in) driving wheels, optimized for high-speed express passenger services on the London and North Western Railway.[6][7] These engines employed a four-cylinder simple expansion layout, with two outside cylinders and two inside cylinders, all measuring approximately 15¾ in to 16 in in diameter by 26 in stroke depending on production batch (initially 16 in, later reduced to 15¾ in to improve steaming); the Walschaerts valve gear was mounted externally and connected to the inside cylinders via rocking levers for efficient steam distribution.[6][1][2] The original boiler was a Belpaire type with a Schmidt superheater, operating at 175 lbf/in² pressure and measuring 20 ft 2 in in length.[6][7] It provided an evaporative heating surface of 1,815 sq ft, a superheater surface of 415 sq ft, and a total heating surface of 2,230 sq ft, supported by a grate area of 31 sq ft.[7][1] This configuration delivered a tractive effort of 24,446 lbf, enabling reliable performance on heavy expresses.[1]
ParameterSpecification
Locomotive weight78 long tons (174,720 lb)
Tender weight (loaded)69 long tons (154,560 lb)
Coal capacity4 tons (8,960 lb)
Water capacity3,000 imperial gallons (3,603 US gal)
The locomotives were paired with original tenders carrying 4 tons of coal and 3,000 imperial gallons of water, though later examples received larger tenders with up to 7 tons coal and 3,600 gallons water; overall, the design supported top speeds of 80-90 mph on express runs.[6][1] The first locomotive, No. 2222, was named after Sir Gilbert Claughton, chairman of the LNWR.[6]

Construction

Production

The LNWR Claughton Class locomotives were manufactured exclusively at the company's Crewe Works, with a total of 130 units constructed between 1913 and 1921 and no subcontracting to private builders.[2][6] Designed by Charles J. Bowen Cooke, production began in 1913 with an initial batch of ten locomotives (Crewe Works Nos. 5117 and 5138–5146), marking the introduction of this 4-6-0 express passenger class.[2] Subsequent lots followed in additional batches through the pre-war and wartime periods, including 40 more by 1914, reduced output during World War I (1914–1918) due to the redirection of resources toward military priorities at Crewe (with some frames prepared before the war), and final batches of around 40 locomotives in 1920–1921.[2] The final locomotives entered service in 1921, completing the class just before the LNWR's absorption into the London, Midland and Scottish Railway.[2]

Numbering and naming

The London and North Western Railway (LNWR) employed a non-sequential numbering system for the Claughton Class locomotives, reusing numbers vacated by withdrawn engines, which scattered the 130 locomotives across a wide range from 1 to 2222 with numerous gaps.[8][9] For example, the prototype, built in 1913, received No. 2222, while later batches included numbers like 1914 and 2097.[8][10] Two locomotives served as war memorials to LNWR staff killed in the First World War: No. 1914 Patriot, built in January 1920 at Crewe Works, and No. 2097, which briefly carried the name Patriot in early 1920 after its construction in 1917.[10][9][11] Most of the 130 locomotives received names honoring notable figures, places, or events, such as No. 2222 Sir Gilbert Claughton (after the LNWR chairman), No. 2401 Lord Kitchener (a military leader), No. 42 Princess Louise (a royal), No. 1161 Sir Robert Turnbull (a company director), and others commemorating cities like Liverpool or the designer Charles J. Bowen Cooke.[8][12] Following the 1923 grouping into the London, Midland and Scottish Railway (LMS), the class initially retained their LNWR numbers to maintain pre-grouping identities.[9][13] In 1926, they were systematically renumbered 5900–6029, with the war memorial engine No. 1914 becoming No. 5964 as an exception to preserve its significance.[9][10][13]

Operational service

LNWR operations

The Claughton Class locomotives were primarily deployed on express passenger services along the West Coast Main Line, handling intensive routes from London Euston to destinations such as Glasgow and Liverpool.[2] These duties emphasized the class's role in powering heavy trains over challenging gradients, particularly north of Crewe, where their four-cylinder design provided the necessary tractive effort for sustained high-speed running.[2] Upon introduction in 1913, the locomotives underwent extensive trials that highlighted their superior acceleration and power compared to predecessors like the Experiment and Precursor classes.[2] For instance, a November 1913 test from Euston to Crewe with a 434-ton load achieved an average speed of 60 mph, generating up to 855 drawbar horsepower, while indicated horsepower reached peaks of over 1,600 during climbs like Boxmoor.[2] These performances confirmed the benefits of superheating and the larger boiler, enabling average operational speeds of 60-70 mph on express runs.[2] World War I significantly impacted the class, with increased demands for heavy haulage on munitions and supply trains straining their capabilities and accelerating wear.[2] Some units served with the Railway Operating Division for military transport needs, while others remained on the LNWR network for wartime freight.[2] From 1913 to 1923, the Claughtons reached peak usage hauling 400- to 500-ton passenger trains on principal expresses.[2] However, reliability issues emerged with the early Schmidt-type superheaters, including inconsistent steaming and variable day-to-day performance, which contributed to higher maintenance costs.[2] Maintenance for the class was centralized at Crewe Works, where routine overhauls addressed these concerns through modifications like improved lubrication and valve upgrades post-war.[2] This facility handled both construction and servicing, ensuring the locomotives' operational readiness during their LNWR tenure.[6]

LMS operations

Following the 1923 railway grouping, the LNWR Claughton Class locomotives were absorbed into the London, Midland and Scottish Railway (LMS) fleet, where they were renumbered in the 5900–6029 series.[2] Initially retained for express passenger services, they continued to haul premier trains, such as those between London Euston and Carlisle, until displaced by the more powerful LMS Royal Scot Class in 1927.[6] Their four-cylinder design provided reliable performance on these routes, with recorded speeds reaching 84–85 mph on downhill sections like Aisgill and Blea Moor, and an average of 56.8 mph over 176.9 miles on Euston–Manchester expresses.[14] After 1927, many Claughtons were reallocated to the Midland Division for secondary passenger and freight duties, including workings from Preston on Liverpool and Manchester–Scotland services, as well as the Settle and Carlisle line.[14] For instance, the pioneer locomotive Sir Gilbert Claughton (LMS No. 5900) was transferred to this division and diagrammed for heavy passenger turns in 1931.[14] On these lighter routes, their 20-ton axle load imposed speed restrictions to protect infrastructure, limiting operations compared to their original high-speed West Coast main line roles.[2] Fuel efficiency was moderate, reflecting the class's high maintenance demands from the complex valve gear.[2] Limited numbers remained in use on traditional LNWR routes, such as Euston–Manchester expresses, into the 1930s, often hauling loads of 380 tons at averages of 55–60 mph.[6][14] Specific diagrammed turns included the Merseyside Express (55.5 mph average over 189.7 miles) and Ulster Express segments from Crewe with 475 tons in 1935.[14] By the mid-1930s, however, most had been superseded by newer LMS designs for these services.[6]

Modifications and variants

Boiler rebuilds

Between 1928 and 1930, the London, Midland and Scottish Railway (LMS) rebuilt 20 Claughton Class locomotives with larger boilers to enhance their power output and efficiency for express passenger services. These rebuilds replaced the original superheated boilers with the LMS standard No. 2 type, designated G9½S, which featured a greater diameter, improved tube layout, and a total heating surface of 2,119 sq ft (197 m²) for better steam production.[6][15][2] The modifications increased boiler pressure from 175 lbf/in² to 200 lbf/in² and raised the tractive effort from 27,072 lbf to 29,570 lbf. This resulted in higher sustained power for hauling heavy trains, while also reducing coal consumption by 10-15% through improved thermal efficiency. Selected examples include No. 5900 (originally LNWR No. 1000, named Sir Gilbert Claughton) and No. 5990 (originally LNWR No. 1050, named Robert F. Roberts), both of which received the new boiler during this period.[2][3][6] Performed at Crewe Works, the rebuilds added weight to the locomotives, bringing the total from 77.75 long tons to 80 long tons, primarily due to the heavier boiler assembly. These changes addressed limitations in the original design, enabling better performance on demanding routes without requiring full overhauls.[3][2]

Other conversions

In the late 1920s, ten London, Midland and Scottish Railway (LMS)-owned Claughton locomotives that had previously received larger boiler rebuilds were further modified with Caprotti poppet valve gear to enhance steam distribution and overall efficiency.[3] These poppet valves replaced the original piston valves and Walschaerts gear, allowing for higher cut-off points and reduced cylinder condensation, with trials on locomotives such as No. 5908 Alfred Fletcher demonstrating a coal consumption improvement of approximately 20% (from 4.86 lb per drawbar horsepower-hour to 3.82 lb).[2] However, the Caprotti fittings increased maintenance demands due to the complexity of the rotary camshaft mechanism and poppet wear, limiting their broader adoption.[2] In 1930, twelve Claughton locomotives were nominally rebuilt as the initial batch of the LMS Patriot Class 4-6-0s, utilizing the original frames, boilers, and other components to extend their operational life amid the LMS's standardization efforts.[16] The first two, Nos. 5500 and 5501 (later 45500 and 45501), incorporated driving wheels from early 1912-built Claughtons with distinctive large central bosses, while the remainder were largely new builds presented as rebuilds for accounting purposes; this approach allowed the Patriots to achieve higher power outputs and remain in service into the British Railways era until the 1960s.[17] Selection for these conversions favored locomotives with robust, well-maintained frames from later production batches, ensuring structural integrity for the three-cylinder reconfiguration. Additional non-boiler modifications included the experimental fitting of Kylälä multi-nozzled blast pipes in the smokeboxes of four locomotives—Nos. 5908, 5912, and 5975 among them—in 1932, aimed at improving exhaust drafting and combustion efficiency without altering the boiler itself.[2] These changes, overlapping with some Caprotti-equipped examples that had also undergone boiler upgrades, contributed to marginal gains in steaming performance but were not widely extended across the class.[4]

Withdrawal and disposal

Timeline

The withdrawal of the LNWR Claughton Class locomotives commenced in the early 1930s, as the London, Midland and Scottish Railway (LMS) prioritized newer, more efficient designs like the Royal Scot class for express passenger services. Between 1932 and 1937, 126 of the 130 locomotives were withdrawn due to their advancing age after 11 to 24 years of service, with scrapping accelerated by the class's complex four-cylinder arrangement that increased maintenance demands.[6][3] The onset of World War II delayed further disposals, with the four surviving examples—Nos. 5946, 6004, 6017, and 6023—reassigned to lighter duties such as secondary passenger trains, as wartime needs conserved available motive power. By this point, parts scarcity and escalating repair costs had rendered major overhauls uneconomical for these pre-Group Junction designs. Three of these locomotives were withdrawn between 1940 and 1941, leaving only No. 6004 in service.[3][18] Post-war rationalization under British Railways led to the final withdrawal of No. 6004 in April 1949, after it had been allocated the BR number 46004 but without the repaint being completed; this locomotive, originally built in 1920, marked the end of the class after approximately 29 years. The overall lifespan ranged from 28 to 36 years, limited by high maintenance expenses and diminishing spare parts availability in the LMS and BR eras. Scrapping occurred mainly at Crewe Works, the class's birthplace, though some frames and components were sent to contractors like Hughes Bolckow for breaking.[3][6][1]

Preservation status

None of the 130 locomotives of the LNWR Claughton Class were preserved in complete form, with all examples withdrawn and scrapped by 1949.[19] The final member of the class, No. 6004 Princess Louise, was retired in April 1949 due to uneconomical major repairs, marking the end of the fleet without any successful preservation initiatives during their active service.[3] Preservation efforts for the Claughtons were absent prior to their withdrawal, as the class was overshadowed by the LMS's emphasis on newer designs during the interwar and post-war periods. Post-1945, railway preservation in Britain prioritized more modern and iconic classes, such as the LMS Coronation Class, which saw examples like No. 6229 Duchess of Hamilton saved for posterity, while the aging Claughtons received no such attention amid rapid scrapping programs.[17] In recent years, interest has revived through a new-build project by the LMS Locomotive Trust to construct a replica of No. 6004 Princess Louise, announced in 2018, aiming to recreate the locomotive using original drawings and components where possible. As of 2025, the project remains in planning stages without completion.[20] Surviving artifacts from the class are limited to components such as nameplates, which occasionally appear in railwayana auctions and private collections. For instance, the brass nameplate from LMS No. 5927 Sir Francis Dent (built 1916, withdrawn 1936) and No. 2445 Baltic (built 1917, withdrawn 1937) have been documented in sales, confirming their endurance as relics.[21][22] Additionally, technical drawings and diagrams for Claughton components, including cylinders, boilers, and modifications like the Robinson superheater, are held in the National Railway Museum's Crewe Locomotive Works collection, spanning dates from 1912 to 1936.[23] The Claughton Class endures through its legacy in model engineering and historical influence on subsequent designs, notably the LMS Patriot Class, where the first two Patriots (Nos. 5500 and 5501) were rebuilt from Claughton frames and components in 1930, retaining elements like driving wheels.[16] Scale models and digital simulations of the class are available from manufacturers such as Caledonia Works for railway simulations, supporting enthusiast recreations.[24] Modern interest persists via dedicated publications, including Claughton & Patriot 4-6-0s by R.J. Essery and G. Toms (Wild Swan Publications, 2006), which documents the class's history, allocations, and disposal through archival records from enthusiast societies.[25]

Accidents and incidents

Three members of the class were involved in serious accidents between 1929 and 1935, two of which resulted in multiple fatalities.[26][27][28] On 12 February 1929, No. 5977 was hauling a down express passenger train from St. Pancras to Glasgow when it was involved in a head-on collision with an up express freight train at Doe Hill station, Derbyshire, due to a signalman's error in routing the freight onto the passenger line. The driver and fireman of the passenger train were killed; no passengers were injured. The locomotive was severely damaged and withdrawn shortly after.[26] On 6 March 1930, No. 5971 Croxteth was hauling an up passenger train from Hellifield to Carlisle when it collided head-on with a ballast train inside Waste Bank Tunnel near Culgaith, Cumberland (now Cumbria), after passing a signal at danger due to driver error. The driver was killed, one passenger died from injuries, and eight others were injured. The locomotive was badly damaged.[27] On 13 March 1935, No. 5946 was hauling an up express freight train (Alexandra Docks to Broad Street) when its vacuum brake failed, leading to a rear-end collision with a following milk train at King's Langley, Hertfordshire. This fouled the line, causing further collisions with two down trains. The driver of the milk train was killed; no other fatalities occurred, though several were injured. The Claughton locomotive was derailed and severely damaged.[28]
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