Stephenson valve gear
E1126784
UNEXPLORED
Stephenson valve gear is an early and widely used type of steam locomotive valve gear that uses eccentrics mounted on the driving axle to control steam admission and exhaust to the cylinders.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Stephenson valve gear canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T14917309 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Stephenson valve gear Context triple: [Walschaerts valve gear, comparedTo, Stephenson valve gear]
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A.
Walschaerts
Walschaerts valve gear is a widely used steam locomotive valve gear mechanism, developed in the 19th century, that precisely controls steam admission and exhaust to the cylinders.
-
B.
Watt steam engine
The Watt steam engine was a vastly improved steam engine developed in the late 18th century that greatly increased efficiency and helped power the Industrial Revolution.
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C.
Stephenson's Rocket
Stephenson's Rocket is an early 19th-century steam locomotive famous for winning the 1829 Rainhill Trials and proving the viability of railway transport.
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D.
River Don Engine
The River Don Engine is a historic, high-powered steam engine from Sheffield’s industrial era, renowned for its role in driving heavy steel rolling mills.
-
E.
James the Red Engine
James the Red Engine is a bright red mixed-traffic steam locomotive and one of the main anthropomorphic train characters in Rev. W. Awdry’s Railway Series, later popularized by the Thomas & Friends television adaptations.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Stephenson valve gear Target entity description: Stephenson valve gear is an early and widely used type of steam locomotive valve gear that uses eccentrics mounted on the driving axle to control steam admission and exhaust to the cylinders.
-
A.
Walschaerts
Walschaerts valve gear is a widely used steam locomotive valve gear mechanism, developed in the 19th century, that precisely controls steam admission and exhaust to the cylinders.
-
B.
Watt steam engine
The Watt steam engine was a vastly improved steam engine developed in the late 18th century that greatly increased efficiency and helped power the Industrial Revolution.
-
C.
Stephenson's Rocket
Stephenson's Rocket is an early 19th-century steam locomotive famous for winning the 1829 Rainhill Trials and proving the viability of railway transport.
-
D.
River Don Engine
The River Don Engine is a historic, high-powered steam engine from Sheffield’s industrial era, renowned for its role in driving heavy steel rolling mills.
-
E.
James the Red Engine
James the Red Engine is a bright red mixed-traffic steam locomotive and one of the main anthropomorphic train characters in Rev. W. Awdry’s Railway Series, later popularized by the Thomas & Friends television adaptations.
- F. None of above. chosen
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Walschaerts valve gear