![]() ![]() In 2014, it was purchased by the Western Maryland Scenic Railroad (WMSR) for restoration. 1309 became the last domestic steam locomotive built by Baldwin. When coal production dramatically fell due to labor unrest in 1949, the order was revised to just ten engines (Nos. The Chesapeake and Ohio ordered 25 of these engines in 1948 to pull coal trains. While complicated and uncommon, the C&O had a long history with Mallets and they were ideal for slow speed work in West Virginia. It also had two cross compound air compressors mounted on the smokebox door to supply enough air for frequent heavy braking needed in mountain railroading. The additional length of two sets of cylinders required the engines to be articulated to enable operation on tight radius turns common in mountainous areas in West Virginia and Kentucky coal country, adding even more complexity. While compound locomotives are more efficient than single-expansion machines, the complexity of the design led to very few United States railroads using them after the turn of the century. This design was a compound locomotive where steam was expanded once in smaller rear cylinders and the exhaust captured and expanded a second time in larger lower-pressure front cylinders. The engine is a Mallet articulated locomotive. A very similar design, the USRA 2-6-6-2, was chosen by the United States Railroad Administration as one of its standard designs thirty years earlier during World War I. 1309 was built from a 40-year-old design, with mechanical lubricators, stoker, and superheater, the last of a series of 2-6-6-2s that the C&O began in 1911. The locomotive, along with several others, all considered impractical to restore to working condition, were taken out of storage in 1972 for cosmetic restoration and later moved to the B&O Railroad Museum in Baltimore, Maryland in 1975, where the restoration was completed while on static display. It was ordered by the Chesapeake and Ohio Railway to pull heavy coal trains in the mountainous terrain of West Virginia and Kentucky which it did from 1949 until its retirement from revenue service in 1956, after which it was stored for nearly twenty years at their roundhouse at Peach Creek, West Virginia. It was the last Class 1 mainline locomotive built by Baldwin, maker of over 70,000 locomotives since 1832. 1309 was built by Baldwin Locomotive Works in November 1949. ![]() History Revenue service Ĭhesapeake & Ohio Railway No. This was the first time an articulated locomotive operated in the eastern United States since the retirement of Norfolk and Western 1218 in late 1991. The restoration was completed on December 31, 2020, and the locomotive entered tourist excursion service for the WMSR on December 17, 2021. 1309 was moved to the B&O Railroad Museum for static display until 2014 when it was purchased by the Western Maryland Scenic Railroad (WMSR), who undertook a multi-year effort to restore it to operating condition. It was the very last steam locomotive built by the Baldwin Locomotive Works in 1949 and originally operated by the Chesapeake and Ohio Railway (C&O) where it pulled coal trains until its retirement in 1956. Western Maryland Scenic Railroad 1309 is a compound articulated class "H-6" " Mallet" type steam locomotive with a 2-6-6-2 ( Whyte notation) wheel arrangement. 1309 in Ridgeley, West Virginia, on December 17, 2022 Symbols, abbreviations, or full names for units of length,Īrea, mass, pressure, and other types.No. You can find metric conversion tables for SI units, as wellĪs English units, currency, and other data. Since atmospheric pressure at sea level is around 14.7 psi, this will be added to any pressure reading made in air at sea level.Ĭonversion calculator for all types of measurement units. ![]() Pounds per square inch absolute (psia) is used to make it clear that the pressure is relative to a vacuum rather than the ambient atmospheric pressure. It is the pressure resulting from a force of one pound-force applied to an area of one square inch. The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in² or lbf/in²) is a unit of pressure or of stress based on avoirdupois units. Psia to psi, or enter any two units below: Enter two units to convert From: You can do the reverse unit conversion from
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