The steam ports were one and
one-eighth inches by six and a half inches; the exhaust ports one and
one-eighth by six and a half inches; grate surface, ten feet eight
inches; fire box surface, thirty-six feet; flue surface, two hundred
and thirteen feet; weight, without fuel or water, twenty-two thousand
four hundred and twenty-five pounds.
After the valves were in gear and the engine in motion, two levers on
the engineman's side moved back and forth continuously. When it was
necessary to put the locomotive on the turntable, enginemen who were
skilled in the handling of the engines first put the valves out of
gear by turning the handle down, and then worked the levers by hand,
thus moving the valves to the proper position and stopping the engine
at the exact point desired.
The reversing gear was a very complicated affair. The two eccentrics
were secured to a sleeve or barrel, which fitted loosely on the crank
shaft, between the two cranks, so as to turn freely. A treadle was
used to change the position of this loose eccentric sleeve on the
shaft of the driving wheel (moving it to the right or left) when it
was necessary to reverse.
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