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GWR Route: North Warwickshire Line
Wood End Platform: gwrwe2886
Great Western Railway 4-4-0 Atbara class No 4120
Atbara emerging from Wood End tunnel on a Wolverhampton to South
Wales (via Stratford-upon-Avon) express circa 1924. On the first
Atbara class locomotives their name was incorporated with the
number on the cab-side oval plate.
Atbara was built in April 1900 at Swindon Works
as the first of twenty locomotives ordered on lot 125 and normal practice was
followed with the class being named after the first locomotive. The name chosen
for these twenty locomotives reflected the popularity of various recent
conflicts in the expanding British Empire; the Battle of Atbara being Lord
Kitchener's pivotal victory in the Sudan during 1898. The locomotive originally
carried the number No 3373 and was part of the ongoing development of a new
breed of 4-4-0 express passenger locomotives that replaced the uncoupled
Victorian Singles. Starting with the Duke class
locomotives in 1895, the Belpaire firebox was introduced in 1897 on the
Badminton class locomotives and a domeless boiler in 1899 on the
Camel class locomotives. For the Atbara class, the main
driving wheel diameter was increased to six foot, eight and half inches and a
standard No 2 parallel boiler (D0) was fitted. Visually the straight top to the
double frames was also a noticeable departure from previous Swindon practice.
The boiler pressure was originally 180 lb producing a tractive effort at 80% of
16,010 lbs, but after coned boilers were introduced, this was increased
initially to 195 lb and then 200 lb, producing a tractive effort at 80% of
17,790 lbs. The locomotive Atbara was fitted with a standard No 2
short coned boiler (D2) in June 1904 and subsequently with a long coned version
(D3) in October 1910. Top feed apparatus was introduced from 1911 and a
superheated boiler was fitted in September 1913.
Ten Atbara class locomotives had been fitted
with larger standard No 4 boilers after 1902 and became the prototype of the
City class. By 1912 several other 4-4-0 locomotives had also been modified, so
in December of that year the Great Western Railway carried out a wholesale
renumbering exercise to group together those locomotives with similar tractive
effort. No 3373 became No 4120 and twenty Flower class locomotives,
which had been built with standard No 2 boilers were added to the
Atbara class and all of the locomotives were re-numbered in
sequence from No 4120 to No 4168. When the Great Western Railway introduced
their classification system (see 'engine
map') the Atbara class locomotives were allocated to Power
group A and Route colour Red. The semi-plug piston valve had become standard in
1910 and were fitted to locomotive No 4120 In November 1925. This Locomotive
was originally allocated to Tyseley Shed (TYS) and was also known to have been
allocated there in January 1921. No 4120 was finally withdrawn from Leamington
Shed (LMTN) in September 1929. There is another view of this locomotive at Snow
Hill station in image 'gwrbsh57'.
The leading clerestory coach appears to be a ganged
corridor, brake third with toilet, four compartments, guard's compartment with
lookout and a large luggage area. This is probably one of the 56 foot long
diagram D30/D31 coaches built in 1900 under carriage lots 931, 953 and 955. All
three lots were each for ten coaches, but half of lot 931 and all of lot 953
were arranged with the corridor on the other side (hence the two diagram
numbers). The other visible coaches are more recent toplight type coaches, the
first being a ganged corridor, brake third with toilet, three compartments,
guard's compartment and luggage area. This is probably a 57 foot long diagram
D56 coach, a type which were built under five lots between 1913 and 1920.
Another two lots had been planned to be built, but because of the First World
War these were completed as ambulance stock. After the war these were
re-purchased from the Government and altered to their intended layout.
Robert Ferris
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