LMS Compound 4-4-0

LMS 4P Compound 4-4-0

LMS 1115 circa 1925–1928
Type and origin
Power type Steam
Builder LMS Derby (75)
LMS Horwich (20);
North British Locomotive Company (25)
Vulcan Foundry (75)
Build date 1924–1932
Total produced 195
Specifications
Configuration 4-4-0
UIC class 2′B h3v
Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge
Leading dia. 3 ft 6 1⁄2 in (1.080 m)
Driver dia. 6 ft 9 in (2.057 m)
Wheelbase Loco: 24 ft (7.315 m)
Length 56 ft 7 7⁄8 in (17.269 m)
Loco weight 61.70 long tons (62.69 t; 69.10 short tons)
Tender weight 41.2–41.7 long tons (41.9–42.4 t; 46.1–46.7 short tons)
Fuel type Coal
Fuel capacity 4.0–5.5 long tons (4.1–5.6 t; 4.5–6.2 short tons)
Water cap 3,500 imp gal (15,900 l; 4,200 US gal)
Firebox:
 • Firegrate area		 28.5 sq ft (2.65 m2)
Boiler G9AS
Boiler pressure 200 lbf/in2 (1.38 MPa)
Heating surface:
 • Tubes and flues		 1,170 sq ft (109 m2)
 • Firebox 147 sq ft (13.7 m2)
Superheater:
 ​
 • Heating area 290 sq ft (26.9 m2) or
272 sq ft (25.3 m2)
Cylinders
  • One high pressure (inside)
  • Two low pressure (outside)
High-pressure cylinder 19 in × 26 in (483 mm × 660 mm)
Low-pressure cylinder 21 in × 26 in (533 mm × 660 mm)
Valve gear Stephenson
Valve type
Train brakes Vacuum
Performance figures
Tractive effort 22,650 lbf (100.75 kN)
Career
Operators
Power class 4P
Numbers
  • LMS 900–939, 1045–1199
  • BR: 40900-40939, 41045–41199
Withdrawn 1952–1961
Disposition All scrapped

The London, Midland and Scottish Railway Compound 4-4-0 was a class of steam locomotive designed for passenger work.[1]

Overview

One hundred and ninety five engines were built by the LMS, adding to the 45 Midland Railway 1000 Class, to which they were almost identical. The most obvious difference is that the driving wheel diameter was reduced from 7 ft 0 in (2.134 m) on the Midland locomotive to 6 ft 9 in (2.057 m) on the LMS version. They were given the power classification 4P.

The LMS continued the Midland numbering from 1045 to 1199 and then started in the lower block of 900–939. After nationalisation in 1948, BR added 40000 to their numbers so they became 40900–40939 and 41045–41199.[2]

Table of orders
LMS No. BR No. Lot No. Date built Built by Notes
1045–1084 41045–41084 6 1924 Derby Works
1085–1114 41085–41114 16 1925 Derby Works
1115–1130 41115–41130 17 1925 Horwich Works
1131–1134 41131–41134 17 1926 Horwich Works
1135–1159 41135–41159 18 1925 North British Loco 23229–53
1160–1184 41160–41184 19 1925 Vulcan Foundry 3833–3857
1185–1199 41185–41199 38 1927 Vulcan Foundry 3990–4012
900–909 40900–40909 38 1927 Vulcan Foundry 4013–4022
910–924 40910–40924 38 1927 Vulcan Foundry 4033–4047
925–934 40925–40934 38 1927 Vulcan Foundry 4023–4032
935–939 40935–40939 90 1932 Derby Works 40936[2]

Accidents and incidents

Withdrawal

The class were withdrawn between 1952 and 1961. None have survived into preservation, though the first of the Midland 1000 Class engines has.[6]

Tavle of withdrawals
Year Quantity in
service at
start of year 		Quantity
withdrawn 		Locomotive numbers
1952 195 6 40911/18/22, 41109/71/82.
1953 189 13 40905, 41046/52/55–57/92/99, 41125/45/48/78/84.
1954 176 23 40901/14/19/23, 41047/51/54/58/74/80/82/84/87/96,
41110/15/33/34/38/39/41/46/74.
1955 153 37 40903/06/08/12/13/15/16/21/24, 41059/61/67/69/70/72/76/81/91,
41104/07/17/24/27/26/30/35/36/49/54/61/69/75–77/83/88/98.
1956 116 27 40900/02/09/10/17/29/32/38/39, 41050/53/65/79/88/97,
41126/28/31/32/37/42/47/60/66/70/87/91.
1957 89 34 40904/26/27/30/34, 41045/48/64/73/75/77/85/89/98,
41103/05/08/12/16/40/50/51/53/55/72/79/80/81/85/86/92/94/95/97.
1958 55 36 40920/28/31/33/35/37, 41060/66/68/71/78/83/86/90/93/95,
41102/06/11/13/1418/19/22/44/52/56/59/63/64/67/89/90/93/96/99.
1959 19 13 40925, 41049/62/94, 41100/01/20/21/23/43/58/65/73.
1960 6 4 40907, 41063, 41157/62.
1961 2 2 40936, 41168.

References

  1. ↑ "4-4-0 Midland Compound express passenger locomotive N0.1000". Srpsmuseum.org.uk. 2012-03-07. Retrieved 2014-06-12.
  2. 1 2 "Monument Lane Shed - View of ex-LMS 4P 4-4-0 Compound No 40936 coupled to the experimental Stanier 3500 gallon tender". Warwickshirerailways.com. Retrieved 2014-06-12.
  3. ↑ Trevena, Arthur (1980). Trains in Trouble. Vol. 1. Redruth: Atlantic Books. p. 36. ISBN 0-906899-01-X.
  4. ↑ "Report on the Accident at Ashchurch on 8th January 1929" (PDF). Ministry of Transport. 5 March 1929. Retrieved 10 June 2014.
  5. ↑ Hall, Stanley (1990). The Railway Detectives. London: Ian Allan. p. 99. ISBN 0 7110 1929 0.
  6. ↑ "Steam Locomotives of a More Leisurely Era 1902 – 4-4-0 Compounds Midland Railway | Chasewaterstuff's Railway & Canal Blog". Chasewaterstuff.wordpress.com. 2013-01-14. Retrieved 2014-06-12.
Sources
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