Built
in 1830, the Northumbrian
was an enlarged version of the Rocket
with the cylinders almost horizontal. The other important change was
that George Stephenson and Robert
Stephenson had the firebox incorporated into the boiler for the
first time and had a smokebox in the front, to produce what became
the conventional locomotive boiler. With George
Stephenson on the footplate, the Northumbrain was used
as the leading locomotive during the opening of the Liverpool
& Manchester Railway on 13th September, 1830.
The Northumbrian with its integral firebox
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