About John Gray
John Gray was a British engineer.
John Gray was an early English steam locomotive engineer who introduced several innovations in locomotive design during the 1830s and 1840s. John Gray's origins were thought to be unknown but he appears to have originated from Newcastle. John Gray was born 29 August 1810 in Newcastle upon Tyne, Northumberland, England.
Career Innovations In 1838 he was working for the Liverpool and Manchester Railway where he was the first engineer to use the balanced slide valve on locomotives, and later applied a form of expansion gear.
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Important facts
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Frequently asked questions
Who was John Gray?
early steam locomotive engineer
What was John Gray's occupation?
John Gray was an engineer.
What nationality was John Gray?
John Gray was British.
Sources & further reading
· DBpedia: John Gray (locomotive engineer)
Cite this page
APA: Biography.guide. (2026). John Gray. https://biography.guide/john-gray-engineer/
MLA: "John Gray." Biography.guide, https://biography.guide/john-gray-engineer/.
Chicago: "John Gray." Biography.guide. https://biography.guide/john-gray-engineer/.
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