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Fireboxes with a brick arch


burgundy

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As I understand it, most early locos were designed to burn coke. Because of the cost of coke, there was a fair amount of experimentation to find a way to burn coal, without generating excessive smoke. Somewhere around the 1860s, the use of a brick arch in the firebox became the commonly adopted solution, replacing midfeathers and other complex (usually patented) devices.

Can anyone advise, please, where the use of a brick arch originated on railway locomotives and when it came into common usage?

Many thanks

Eric

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See this link for documentary evidence under Markham http://www.steaminde...ng/proc1860.htm

 

Since it was reported in 1860, the development work had been going on prior to that date, and general adoption commenced thereafter. The usual confused mess of rival claims for alternative (often patent) systems persisted, but the brick arch and associated kit had generally triumphed by 1890. Kirtley on the Midland Railway was I believe the earliest systematic adopter in the UK.

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