2-2-0
Encyclopedia
Whyte notation
The Whyte notation for classifying steam locomotives by wheel arrangement was devised by Frederick Methvan Whyte and came into use in the early twentieth century encouraged by an editorial in American Engineer and Railroad Journal...
for the classification of steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...
s, 2-2-0 represents the wheel arrangement
Wheel arrangement
In rail transport, a wheel arrangement is a system of classifying the way in which wheels are distributed beneath a locomotive.. Several notations exist to describe the wheel assemblies of a locomotive by type, position, and connections, with the adopted notations varying by country...
of two leading wheel
Leading wheel
The leading wheel or leading axle of a steam locomotive is an unpowered wheel or axle located in front of the driving wheels. The axle or axles of the leading wheels are normally located in a truck...
s on one axle, two powered driving wheel
Driving wheel
On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons...
s on one axle, and no trailing wheel
Trailing wheel
On a steam locomotive, a trailing wheel or trailing axle is generally an unpowered wheel or axle located behind the driving wheels. The axle of the trailing wheels was usually located on a trailing truck...
s. This configuration, which became very popular during the 1830s, was commonly called the Planet type after the first locomotive, Robert Stephenson
Robert Stephenson
Robert Stephenson FRS was an English civil engineer. He was the only son of George Stephenson, the famed locomotive builder and railway engineer; many of the achievements popularly credited to his father were actually the joint efforts of father and son.-Early life :He was born on the 16th of...
's Planet
Planet (locomotive)
Planet was an early steam locomotive built in 1830 by Robert Stephenson and Company for the Liverpool and Manchester Railway. The ninth locomotive built for the L&MR, it was Stephenson's next major design change after the Rocket. It was the first locomotive to employ inside cylinders, and...
of 1830.
Equivalent classifications
Other equivalent classifications are:- UIC classificationUIC classificationThe UIC classification of locomotive axle arrangements describes the wheel arrangement of locomotives, multiple units and trams. It is set out in the International Union of Railways "Leaflet 650 - Standard designation of axle arrangement on locomotives and multiple-unit sets". It is used in much...
: 1A (also known as German classification and Italian classification) - French classification: 110
- Turkish classificationTurkish classificationIn the Turkish classification system for railway locomotives, the number of powered axles are followed by the total number of axles. It is identical to the Swiss system except that the latter places a slash between the two numbers.Thus0-6-0 becomes 33...
: 12 - Swiss classification: 1/2
History
After early experience with the 0-2-20-2-2
An 0-2-2, in the Whyte notation for the classification of steam locomotives by wheel arrangement, is one that has two coupled driving wheels followed by two trailing wheels, with no leading wheels...
configuration on the Liverpool and Manchester Railway
Liverpool and Manchester Railway
The Liverpool and Manchester Railway was the world's first inter-city passenger railway in which all the trains were timetabled and were hauled for most of the distance solely by steam locomotives. The line opened on 15 September 1830 and ran between the cities of Liverpool and Manchester in North...
, Robert Stephenson
Robert Stephenson
Robert Stephenson FRS was an English civil engineer. He was the only son of George Stephenson, the famed locomotive builder and railway engineer; many of the achievements popularly credited to his father were actually the joint efforts of father and son.-Early life :He was born on the 16th of...
decided to build a locomotive with cylinders inside the frames
Locomotive frame
A locomotive frame is the structure that forms the backbone of the railway locomotive, giving it strength and supporting the superstructure elements such as a cab, boiler or bodywork. The vast majority of locomotives have had a frame structure of some kind...
, for which a 2-2-0 was preferable.
The first such locomotive was Planet, built in 1830 and the company went on to build a further eighteen examples for the railway. Tom Thumb
Tom Thumb (locomotive)
Tom Thumb was the first American-built steam locomotive used on a common-carrier railroad. Designed and built by Peter Cooper in 1830, it was designed to convince owners of the newly formed Baltimore and Ohio Railroad to use steam engines...
, the first American-built steam locomotive used on a common-carrier railroad, built by Peter Cooper in 1830 was a belt-driven 2-2-0, but the type was not perpetuated.
The Dublin and Kingstown Railway
Dublin and Kingstown Railway
The Dublin and Kingstown Railway , which opened in 1834, was Ireland’s first railway. It linked Westland Row in Dublin with Kingstown Harbour’s West Pier in County Dublin.-History:...
used 2-2-0 in 1834 including Hibernia
Hibernia
Hibernia is the Classical Latin name for the island of Ireland. The name Hibernia was taken from Greek geographical accounts. During his exploration of northwest Europe , Pytheas of Massilia called the island Ierne . In his book Geographia Hibernia is the Classical Latin name for the island of...
designed by Richard Roberts
Richard Roberts
Richard Roberts may refer to:* Richard Roberts , British engineer* Richard W. Roberts, American judge*Richard Roberts , Anglican Archdeacon of St Asaph...
and built by Sharp, Roberts and Company
Sharp, Roberts and Company
Sharp, Stewart and Company was a steam locomotive manufacturer, initially based in Manchester, England. The company was formed in 1843 upon the demise of Sharp, Roberts & Co. and moved to Glasgow, Scotland in 1888, eventually amalgamating with two other Glasgow-based locomotive manufacturers to...
, and Vauxhall built George Forrester and Company
George Forrester and Company
George Forrester and Company was a British locomotive manufacturer at Vauxhall Foundry in Liverpool.The company had opened in 1827 as iron founders and commenced building locomotives in 1834....
. The following year five examples were supplied to the London and Greenwich Railway
London and Greenwich Railway
The London and Greenwich Railway was opened in London between 1836 and 1838. It was the first steam railway to have a terminus in the capital, the first of any to be built specifically for passenger service, and the first example of an elevated railway....
. After 1836 Edward Bury
Edward Bury
Edward Bury was an English locomotive manufacturer.Edward Bury was born in Salford, Lancashire, the son of a timber merchant, and was educated at Chester. By 1823 he was a partner in Gregson & Bury's steam sawmill at Toxteth Park, Liverpool, but in 1826 he set himself up as an iron-founder and...
built sixty-nine 2-2-0 locomotives for the London and Birmingham Railway
London and Birmingham Railway
The London and Birmingham Railway was an early railway company in the United Kingdom from 1833 to 1846, when it became part of the London and North Western Railway ....
.
By 1840 the 2-2-0 tender type had largely been superseded by the 2-2-2
2-2-2
Under the Whyte notation for the classification of steam locomotives, 2-2-2 represents the wheel arrangement of two leading wheels on one axle two powered driving wheels on one axle, and two trailing wheels on one axle. The wheel arrangement both provided more stability and enabled a larger firebox...
configuration. However, there are a few examples of later tank engines, thus William Bridges Adams
William Bridges Adams
William Bridges Adams was an author, inventor and locomotive engineer.-Overview:He is best known for his patented Adams Axle — a successful radial axle design in use on railways in Britain until the end of steam traction in 1968 — and the railway fishplate...
of the Fairfield Locomotive Works (51.5312°N 0.0219°W) in Bow
Bow, London
Bow is an area of London, England, United Kingdom in the London Borough of Tower Hamlets. It is a built-up, mostly residential district located east of Charing Cross, and is a part of the East End.-Bridges at Bowe:...
supplied a 2-2-0 well tank
Tank locomotive
A tank locomotive or tank engine is a steam locomotive that carries its water in one or more on-board water tanks, instead of pulling it behind it in a tender. It will most likely also have some kind of bunker to hold the fuel. There are several different types of tank locomotive dependent upon...
to the Roman Railway
Società per le Strade Ferrate Romane
The Società per le strade ferrate romane was an Italian railway company from 1865 to 1885.The Società Generalle delle Strade Ferrate Romane was formed in 1860 from a merger of the Società Pio Centrale , builder of the Rome–Civitavecchia railway and the Società Pio Latina The Società per le strade...
in 1850. Also Dugald Drummond
Dugald Drummond
Dugald Drummond was a Scottish steam locomotive engineer. He had a career with the North British Railway, LB&SCR, Caledonian Railway and London and South Western Railway...
of the London and South Western Railway
London and South Western Railway
The London and South Western Railway was a railway company in England from 1838 to 1922. Its network extended from London to Plymouth via Salisbury and Exeter, with branches to Ilfracombe and Padstow and via Southampton to Bournemouth and Weymouth. It also had many routes connecting towns in...
introduced his C14 class
LSWR C14 class
The London and South Western Railway C14 class was a class of ten 0-2-2 tank locomotive intended to work Push–pull train s on lightly used lines in 1907. The ‘’’S14 class’’’ was an 0-4-0 version of the same basic design. Both classes proved to be underpowered in this role and many examples were...
2-2-0T in 1906, for Auto trains, but this design was not successful and several of the locomotives were rebuilt to 0-4-0
0-4-0
Under the Whyte notation for the classification of steam locomotives, 0-4-0 represents one of the simplest possible types, that with two axles and four coupled wheels, all of which are driven...
.