The

London, Midland and Scottish Railway The London, Midland and Scottish Railway (LMSIt has been argued that the initials LMSR should be used to be consistent with LNER, GWR and SR. The London, Midland and Scottish Railway's corporate image used LMS, and this is what is generally u ...

(LMS) Sentinel No. 7164, (later 7184 and under

British Railways British Railways (BR), which from 1965 traded as British Rail, was a state-owned company that operated most of the overground rail transport in Great Britain from 1948 to 1997. It was formed from the nationalisation of the Big Four British rai ...

, 47184) was a small shunting locomotive. Its design was that of the single-speed Sentinel, a vertical-boilered

geared locomotive A geared steam locomotive is a type of steam locomotive which uses gearing, usually reduction gearing, in the drivetrain, as opposed to the common directly driven design. This gearing is part of the machinery within the locomotive and should not ...

, using

Sentinel Sentinel may refer to: Places Mountains * Mount Sentinel, a mountain next to the University of Montana in Missoula, Montana * Sentinel Buttress, a volcanic crag on James Ross Island, Antarctica * Sentinel Dome, a naturally occurring grani ...

's standard

vertical boiler A vertical boiler is a type of fire-tube or water-tube boiler where the boiler barrel is oriented vertically instead of the more common horizontal orientation. Vertical boilers were used for a variety of steam-powered vehicles and other mobile ma ...

and

steam motor A steam motor is a form of steam engine used for light locomotives and light self-propelled motor cars used on railways. The origins of steam motor cars for railways go back to at least the 1850s, if not earlier, as experimental economizations for ...

design. This was the smallest of the four Sentinel classes used by the LMS.

Design

7164 was the LMS' only example of the early Sentinel BE or 'Balanced Engine' design, rather than the later CE or 'Central Engine' design used for 7160-7163. This placed the boiler and engine at opposite ends of the frames, with the water tank in the centre. Although the

LNER Class Y1 The LNER Class Y1 was a class of 0-4-0 geared steam locomotives built by Sentinel Waggon Works for the London and North Eastern Railway and introduced in 1925. They passed into British Railways ownership in 1948 and were numbered 68130-6815 ...

Sentinel was also a single-speed, they were of the larger Central Engine design and were similar to the two-speed locomotives in appearance.

Service

Built in 1931 by

Sentinel Waggon Works Sentinel Waggon Works Ltd was a British company based in Shrewsbury, Shropshire that made steam-powered lorries (steam wagons), railway locomotives, and later, diesel engined lorries, buses and locomotives. History Alley & MacLellan, Sen ...

as Works No. 8593, it was taken into LMS stock in 1932 as 7164. It was to a design that was also built for use industry, but unique within the LMS, though the LMS did have other Sentinels of different types. The LMS gave it the

power classification A number of different numbering and classification schemes were used for the locomotives owned by the London, Midland and Scottish Railway (LMS) and its constituent companies; this page explains the principal systems that were used. The followi ...

0F. It was renumbered 7184 in 1939 and as 47184 after nationalisation in 1948. 47184 was withdrawn in 1955 from 5B

Crewe Works Crewe Works is a British railway engineering facility located in the town of Crewe, Cheshire. The works, which was originally opened by the Grand Junction Railway in 1840, employed around 7,000 to 8,000 workers at its peak. In the 1980s, a lot ...

and subsequently scrapped.

Other LMS Sentinel classes

* 7160-7163, two-speed Sentinels * 7164 * 7190–7191, the S&DJR '

Radstock Radstock is a town and civil parish on the northern slope of the Mendip Hills in Somerset, England, about south-west of Bath and north-west of Frome. It is within the area of the unitary authority of Bath and North East Somerset. The Radstoc ...

' Sentinels * 7192, the

Abner Doble Abner Doble (March 26, 1890 – July 16, 1961) was an American mechanical engineer who built and sold steam-powered automobiles as Doble Steam Cars. His steam engine design was used in various automobiles from the early 1900s, including a 1969 ...

-designed four-cylinder

compound Compound may refer to: Architecture and built environments * Compound (enclosure), a cluster of buildings having a shared purpose, usually inside a fence or wall ** Compound (fortification), a version of the above fortified with defensive struct ...

Preservation

47184 was not preserved. However, a similar locomotive that worked in industry, works No. 7232 ''Ann'' was in 2003 painted to masquerade as 7164 on the Embsay and Bolton Abbey Steam Railway. The prototype only carried unlined black livery but Ann was given lined black livery and retained her nameplate.

References

* * * * {{LMS Locomotives 0F Sentinel locomotives Individual locomotives of Great Britain 0-4-0T locomotives Standard gauge steam locomotives of Great Britain Railway locomotives introduced in 1931 Scrapped locomotives Shunting locomotives