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M O T I V E P O W E R D E V E
L O P M E N T |
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American Type Passenger Locomotive,
as Rebuilt at Altoona Shops, 1866
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This locomotive
was originally built by The Baldwin Locomotive Works in 1852, and was similar
to the "Wyoming," illustrated on page 13. It was named "Butler." As here
shown it was rebuilt to burn coal, and equipped with a Laird stack and
link motion. |
devices of its class. It
was arranged with a friction wheel, which could be pulled up against the
right-hand rear driving wheel of the locomotive. As the friction wheel
rotated a chain was wound up on its shaft, and the pull of this chain was
transmitted to the brake-shoes throughout the train.
This period
witnessed an increasing use of steel in locomotive construction, and the
Pennsylvania was active in trying out this material. Steel fireboxes were
first built by The Baldwin Locomotive Works for the Pennsylvania in 1861.
English steel of a high temper was used, and the plates cracked in fitting
them to the boilers; and it was necessary to take them out and substitute
copper. American homogeneous cast steel, however, was successfully used
for the fireboxes of engines 231 and 232, built in January, 1862. These
were ten-wheeled freight locomotives with combustion chambers 36 inches
deep, and the inside fireboxes and combustion chambers with the exception
of the tube sheets (which were copper), were built of steel plates throughout.
Steel boiler shells were first built by The Baldwin Locomotive Works for
the Pennsylvania in 1868, and |
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steel tubes were first used
by the Works in three ten-wheelers built for this road in the same year.
The first application
of the four-wheeled swing-bolster truck made by The Baldwin Locomotive
Works occurred in 1867, when this device was applied to a group of American
(4-4-0) type locomotives built for the Pennsylvania. Among these were four
fast passenger locomotives, with 17 x 24-inch cylinders and driving wheels
66 inches in diameter, which bore the road numbers 419422. Engine 422 was
placed on the road September 9, 1867, and was in constant service until
May 14, 1871, without being off its wheels for repairs, during which time
it made 153,280 miles. This locomotive is shown in an accompanying illustration.
The Pennsylvania
locomotives built during the late sixties were notable because of the simplicity
of their outline and the absence of superfluous paint and brass work. The
lavish use of polished brass and vivid colors was one of the most conspicuous
features of the typical American locomotive built during this period; and
the Pennsylvania, in dispensing with much of this decoration |
| Cylinders |
15" x 18"
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| Drivers, diam. |
44"
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| Weight, total engine |
65,400 lb.
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There were 14 locomotives
of this class. The majority were retired between 1885 and 1889, while two
remained in service until 1892. |
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Six-wheeled Switching Locomotive,
built by The Baldwin Locomotive Works, 1867
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