PRR D4
Encyclopedia
The Pennsylvania Railroad
's steam locomotive
class D4 (formerly Class C (anthracite), pre-1895) comprised thirty-seven anthracite-burning 4-4-0
locomotives intended for general passenger and freight service
on the PRR's New Jersey
lines, constructed at the railroad's own Altoona Works during 1873–1890.
They shared many parts with other standard classes.
This design differed from the Class C (later D3) mainly in its longer firebox to burn slower-burning anthracite coal. Like all the early standardized 4-4-0s on the PRR, the Class C (Anthracite) had a wagon-top boiler with steam dome and a firebox
between the two driving axles.
In 1875, fifteen locomotives were either built or converted (sources differ) with 68 inches (1,727 mm) drivers for fast passenger service on the New Jersey lines. These were classified Class CA (Anthracite) or later D4a, and handled this traffic until 1881, when they were replaced by heavier power.
Pennsylvania Railroad
The Pennsylvania Railroad was an American Class I railroad, founded in 1846. Commonly referred to as the "Pennsy", the PRR was headquartered in Philadelphia, Pennsylvania....
's steam locomotive
Steam locomotive
A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...
class D4 (formerly Class C (anthracite), pre-1895) comprised thirty-seven anthracite-burning 4-4-0
4-4-0
Under the Whyte notation for the classification of steam locomotives, 4-4-0 represents the wheel arrangement of four leading wheels on two axles , four powered and coupled driving wheels on two axles, and no trailing wheels...
locomotives intended for general passenger and freight service
Freight train
A freight train or goods train is a group of freight cars or goods wagons hauled by one or more locomotives on a railway, ultimately transporting cargo between two points as part of the logistics chain...
on the PRR's New Jersey
New Jersey
New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...
lines, constructed at the railroad's own Altoona Works during 1873–1890.
They shared many parts with other standard classes.
This design differed from the Class C (later D3) mainly in its longer firebox to burn slower-burning anthracite coal. Like all the early standardized 4-4-0s on the PRR, the Class C (Anthracite) had a wagon-top boiler with steam dome and a firebox
Firebox
In a steam engine, the firebox is the area where the fuel is burned, producing heat to boil the water in the boiler. Most are somewhat box-shaped, hence the name.-Railway locomotive firebox :...
between the two driving axles.
In 1875, fifteen locomotives were either built or converted (sources differ) with 68 inches (1,727 mm) drivers for fast passenger service on the New Jersey lines. These were classified Class CA (Anthracite) or later D4a, and handled this traffic until 1881, when they were replaced by heavier power.