| 20 | M O T I V E P O W E R D E V E L O P M E N T |
| This locomotive was originally the "Bedford," built by The Baldwin Loco motive Works in 1854, and a duplicate of the "Iron City," illustrated on page 15. It was probably the first locomotive to have the 2-8-0 wheel arrangement. The first road engine of this type, with separate tender, was the "Consolidation," built in 1866 for the Lehigh Valley R. R. to specifications prepared by Alexander Mitchell, M. M. |
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| Subsequently a series of tests was made with engine 156, a new Baldwin of the 4-4-0 type equipped with what was known as the | relative heating value of a ton of coal and a cord of wood, the relative cost of the same delivered to the tender, and the increased | |
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cost of engine repairs
due to the substitution of coal for wood. The report of the test stated
that it was wise to "assume as a basis of our calculation that one pound
of Pittsburgh coal is equivalent in heating value to 2.31 pounds of hard
wood, and that one net ton of coal is equal to 11/3
cords of hard wood." The relative cost of coal
and wood as fuel was determined for the different divisions of the road.
and the practicability of burning coal in passenger service was fully demonstrated.
Engine 156 is shown in an illustration on page 17. In the efforts to burn bituminous |
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| Smith boiler. This design incorporated a deep firebox with a long combustion chamber, suitable baffles and comparatively short tubes. The test was run to determine the | coal successfully, unusual boiler designs, such as the Dimpfel and Phleger, were produced from time to time and put on trial; and experiments were made with a remarkable | |
This was one of the last locomotive built at the Norris Works, before the plant. was moved from Philadelphia to Lancaster. It bore the construction number 1178.
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