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This engine was built for the Vermont Central Railroad in 1848.
It had one pair of driving wheels 6½ ft. in diameter, placed
back of the firebox and a four wheeled truck carried the front
of the engine. The cylinders were 17¼" dia. and 20"
stroke, and were placed horizontally between the frames and the
boiler at the middle of the boiler was to lessen or obviate the
lateral motion of the engine produced when the cylinders were
attached to the smoke box. The connecting rods took hold of half
cranks inside the driving wheels. The bearing on the two rear
axles were so contrived that, by means of a lever, a part of the
weight of the engine usually carried on the wheels in front of
the firebox could be transferred to the driving axle.
This engine was built by Mathias W. Baldwin and was used for
several years on the V. C. Railroad and then rebuilt into a 4
wheeled machine and it was stated that it could be started from
a state of rest and run a mile in 43 seconds.
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