Editing Traction engine (section)

===Traction engines as railway locomotives===
[[File:Aveling and Porter the blue circle.JPG|right|thumb|upright=0.75|An [[Aveling and Porter]] traction engine-based railway locomotive, as used by [[Holborough Cement Co]].]]
Several traction engine builders (such as [[Aveling and Porter]]<ref>{{Cite book |last=Preston |first=James |url=https://www.google.com/books/edition/Aveling_Porter_An_Illustrated_History/QVe-DwAAQBAJ?hl=en&gbpv=1&dq=Aveling%20&%20Porter%20traction%20company%20No.807%20has%20a%20Single%20Cylinder%20mounted%20on%20top%20of%20the%20Boiler&pg=PT25&printsec=frontcover |title=Aveling & Porter: An Illustrated History |date=2019-11-15 |publisher=Amberley Publishing Limited |isbn=978-1-4456-8883-1 |language=en}}</ref> and [[John Fowler & Co.|Fowler]]) built light [[railway locomotive]]s based on their traction engines. In their crudest form these simply had flanged steel wheels to enable them to run on rails. More sophisticated models had the boiler and engine mounted on a [[chassis]] which carried railway-wagon style axles. The rear axle was driven from the engine by gear or chain-drive. These unusual locomotives were sold to small industries for use in shunting and marshalling duties, although they also found favour with engineering firms engaged in the construction of mainline railways for hauling men, equipment and materials over the partly constructed line.