''Sans Pareil'' is a

steam locomotive A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, oil or, rarely, wood) to heat water in the loco ...

built by Timothy Hackworth which took part in the 1829 Rainhill Trials on the Liverpool and Manchester Railway, held to select a builder of

locomotive A locomotive or engine is a rail transport vehicle that provides the motive power for a train. If a locomotive is capable of carrying a payload, it is usually rather referred to as a multiple unit, motor coach, railcar or power car; the ...

s. The name is French and means 'peerless' or 'without equal'. Sans Pareil

While a capable locomotive for the day, its technology was somewhat antiquated compared to George and Robert Stephenson's ''

Rocket A rocket (from it, rocchetto, , bobbin/spool) is a vehicle that uses jet propulsion to accelerate without using the surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entir ...

'', the winner of the Rainhill Trials and the £500 prize money. Instead of the fire tube boiler of ''Rocket'', ''Sans Pareil'' had a double return flue. To increase the heating surface area, the two flues were joined by a U shaped tube at the forward end of the boiler; the

firebox Firebox may refer to: * Firebox (steam engine), the area where the fuel is burned in a steam engine * Firebox (architecture), the part of a fireplace where fuel is combusted *Firebox Records, a Finnish 8101705801record label * Firebox.com, an elect ...

and chimney were both positioned at the rear same end, one on either side. ''Sans Pareil'' had two cylinders, mounted vertically at the opposite end to the chimney, and driving one pair of

driving wheel On a steam locomotive, a driving wheel is a powered wheel which is driven by the locomotive's pistons (or turbine, in the case of a steam turbine locomotive). On a conventional, non-articulated locomotive, the driving wheels are all coupled ...

s directly - the other pair were driven via

connecting rod A connecting rod, also called a 'con rod', is the part of a piston engine which connects the piston to the crankshaft. Together with the crank, the connecting rod converts the reciprocating motion of the piston into the rotation of the crank ...

s, in the typical steam locomotive fashion. At the Rainhill Trials, ''Sans Pareil'' was excluded from the prize because it was slightly over the maximum permitted weight. Nevertheless, it performed very well but had a strange rolling gait due to its vertical cylinders. The 'blast' from the blastpipe was, in Hackworth's trademark style, very strong, so most of the coke was expelled out of the chimney unburnt; and it was this more than its antiquated design that caused its abysmal fuel economy . It was pulled out of the competition because of a cracked cylinder: the design thickness for the cylinder walls was some , but at the point of failure, it was found to be a mere . Hackworth's supporters cried 'foul!', but as he had had over twenty cylinders cast, choosing the best two for the locomotive, skulduggery on the part of the Stephensons whose firm cast the cylinders, and who were direct competitors at Rainhill, is unlikely. After the trials, the Liverpool and Manchester Railway bought ''Sans Pareil'' as well as ''Rocket''. It was subsequently leased to the Bolton and Leigh Railway where it ran until 1844. It was then used by John Hargreaves as a stationary boiler at the

Coppull Coppull is a village and civil parish in Lancashire, England. It is part of the Borough of Chorley, lies around above sea level. Its population is around 8,000, having been counted at 7,959 in the 2011 Census. It is bounded by Whittle Brook, C ...

Colliery,

Chorley Chorley is a town and the administrative centre of the wider Borough of Chorley in Lancashire, England, north of Wigan, south west of Blackburn, north west of Bolton, south of Preston and north west of Manchester. The town's wealth came ...

until 1863. Thereafter, ''Sans Pareil'' was restored and presented to the Patent Office Museum (which later became the

Science Museum A science museum is a museum devoted primarily to science. Older science museums tended to concentrate on static displays of objects related to natural history, paleontology, geology, industry and industrial machinery, etc. Modern trends in ...

) in 1864 by John Hick. The engine now resides at the Shildon Locomotion Museum on static display. __NOTOC__

Replica

A replica locomotive, built in 1980, is now preserved by the

National Railway Museum The National Railway Museum is a museum in York forming part of the Science Museum Group. The museum tells the story of rail transport in Britain and its impact on society. It is the home of the national collection of historically significant ...

at its new Shildon Locomotion Museum annex, which is also home to what remains of the original locomotive.

Other locomotives

London, Midland & Scottish Railway Royal Scot Class

4-6-0 A 4-6-0 steam locomotive, under the Whyte notation for the classification of steam locomotives by wheel arrangement, has four leading wheels on two axles in a leading bogie and six powered and coupled driving wheels on three axles with the ...

locomotive 6126 was originally named ''Sans Pareil''. This loco was built by the

North British Locomotive Company The North British Locomotive Company (NBL, NB Loco or North British) was created in 1903 through the merger of three Glasgow locomotive manufacturing companies; Sharp, Stewart and Company (Atlas Works), Neilson, Reid and Company (Hyde Park Wo ...

Glasgow Glasgow ( ; sco, Glesca or ; gd, Glaschu ) is the most populous city in Scotland and the fourth-most populous city in the United Kingdom, as well as being the 27th largest city by population in Europe. In 2020, it had an estimated popu ...

in September 1927 and withdrawn in October 1963 as 46126 ''

Royal Army Service Corps The Royal Army Service Corps (RASC) was a corps of the British Army responsible for land, coastal and lake transport, air despatch, barracks administration, the Army Fire Service, staffing headquarters' units, supply of food, water, fuel and do ...

''. An AL6 electric locomotive built at Doncaster Works in 1965, number E3106 (later numbered 86214) carried the name 'Sans Pareil' between 1981 and 2005. 86214 was scrapped in 2006.

References

External links

''Sans Pareil''
{{early-steam-locos Individual locomotives of Great Britain 0-4-0 locomotives English inventions Rainhill Trials locomotives Early steam locomotives Steam locomotives of Great Britain Liverpool and Manchester Railway locomotives