Saturday, January 10, 2015
Quite the Pedigree
Mallet locomotives in the USA followed the design created by Anatole Mallet and were called Mallet locomotives as a result. Like Anatole's original design, these locomotives used compound expansion where steam was first used the two high-pressures cylinders and then exhausted to be used a second time in the two larger low-pressure cylinders in the front of the locomotive.
The USA later experimented with the same basic design but with four high-pressure cylinders. These were still articulated locomotives but were no longer true "Mallets" because they used simple expansion instead of compound expansion. Unfortunately, no good name for this design ever emerged, and they tended to be loosely called 'Mallets' as well.
This locomotive was built in 1909. Technically, it is classified as an MC-1 locomotive. The diameter of the driving wheels is a mere 57 inches with a tractive effort of 94,880 pounds. This is produced by cylinders that are 26 inches in diameter with a 40 inch stroke. It burned oil as the fuel of choice.
The title of this blog is "Quite the Pedigree". That is referring to the line-up of Companies involved in the Oregon Railroad & Navigation Company. When I go to Wikipedia to look up the history of the O.W.R. & N. I find this at the beginning: “The Oregon–Washington was incorporated November 23, 1910, in Oregon for the principal purpose of purchasing and consolidating the properties of certain corporations which were then controlled through stock ownership by the Union Pacific Railroad Company and the Oregon Short Line Railroad Company.
Accordingly, on December 23, 1910, it acquired by purchase all of the properties of 12 corporations, except their corporate franchises and certain of their assets, and, on the same date, purchased a part of the properties of 3 other corporations. It subsequently acquired the property of 2 other corporations.”
Then a list follows… there are 34 transactions listed. They vary from “sold to”, to “conveyed to”, to “named changed to”. The list ends in the year 1916; but, it all starts with the incorporation of the Oregon Steam Navigation Company by a special act of the Washington Territory on December 16, 1860.