Assertion: locomotive's engine | /r/HasProperty | successful
Facets:
value: as a prototype
type: OTHER
Source sentences:
text: The 'travelling engine' was successful as a prototype, but underpowered and prone to stalling when overloaded or faced by a gradient.
text: In 1797 Trevithick constructed high-pressure working models of both stationary and locomotive engines that were so successful that he built a full-scale, high-pressure engine for hoisting ore.