4-4-4 - WikiHQ

thumb|300px|Reading No. 110 in its official portrait

Under the Whyte notation for the classification of steam locomotives, The 4-4-4 Reading or Jubilee Type represents the wheel arrangement of four leading wheels on two axles, four powered and coupled driving wheels on two axles, and four trailing wheels on two axles. In the United States, this arrangement was named the Reading type, since the Philadelphia and Reading Railroad was the first to use it. In Canada, this type is known as the Jubilee.

Other equivalent classifications are:

UIC classification: 2B2 (also known as German classification and Italian classification)
French classification: 222
Turkish classification: 26
Swiss classification: 2/6

Usage

Bavarian Railways

A single, experimental 4-4-4, classified as S 2/6, was built for the Royal Bavarian State Railways in 1906 by Maffei. It was successful in an experimental sense, but was too light to haul passenger trains of useful capacity. It was fast, attaining on test, and was semi-streamlined with a pointed nosecone and fairings around the cylinders, stack and dome, and slanted-back cab windows. It inspired the later Bavarian S 3/6 4-6-2 "Pacifics". It passed to the Deutsche Reichseisenbahnen when the German railways were centralised, and was classified as BR 15, number 15 001. It was taken out of service in 1925, and was restored by Maffei to be exhibited at the Munich Transport Exhibition of that year. After the exhibition ended, it was placed in the Nuremberg Transport Museum, where it remains.

Reading Railroad

The Philadelphia and Reading Railway built four C1a Class locomotives in 1915, numbered 110 to 113. They proved to be quite unstable; after that year, they were rebuilt to 4-4-2 "Atlantic" locomotives, classified as P7sa, and renumbered 350 to 353. The Midland and South Western Junction Railway purchased two 4-4-4 tank engines from Sharp, Stewart and Company but these were not a success due to their poor traction. The North Eastern Railway Class D was designed by Vincent Raven in 1913. Between 1931 and 1936 they were rebuilt with a 4-6-2T wheel layout and re-classified as A8. The H Class locomotives built for the Metropolitan Railway in the 1920s are an example of both these factors leading to a rare use of the 4-4-4 arrangement.

thumb|242.001 at the Hungarian Railway Museum

Australia

The Western Australia Government Railway N Class 4-4-4 tank locomotives were introduced in 1896.

Hungary

MÁVAG introduced some MÁV Class 242 4-4-4 streamlined tank locomotives between 1936 and 1939.

India

thumb|No. 22782, Railway Museum, [[Mysore, India (ca. Apr 2022)]]

The Vishveshwaraiah Iron and Steel Company, Bhadravati introduced a Class-E 4-4-4 tank engine in March 1921. No. 22782 was built by the North British Locomotive Company at Atlas Works, Glasgow in 1920, the first of 23 examples. It is currently exhibited in the Railway Museum in the Mysore Junction railway station.

Uruguay

The "D type" 4-4-4T of the Central Uruguay Railway were eight locomotives (Vulcan Foundry 1913 and 1915) for use in the suburban services around Montevideo Central Station.

Venezuela

thumb|4-4-4T Cóndor of the Gran Ferrocarril de Venezuela in 1901

The 3 ft 6 in (1,067 mm) gauge Gran Ferrocarril de Venezuela (Great Venezuela Railway) acquired a class of three 4-4-4T locomotives in 1892, the Cóndor, Gavilán and Halcón. They were built by Hartmann's Sächsische Maschinenfabrik in Chemnitz, Germany. Their maximum speed was .

Halcón still exists and, after an overhaul in 1975, was in service on a heritage line until 1997. Today it is in a desolate condition.

References

See more

Ehrenreich, Thomas. 1915 Reading Company Locomotive 110. Retrieved on May 18, 2005.
Barris, Wes. SteamLocomotive.com: Surviving Streamlined Steam. Retrieved on May 18, 2005.