From Wikipedia, the free encyclopedia

This locomotive was made by SLM, Winterthur, Switzerland in 1886, and it was used on the Finnish State Railways in 1886-1932.

In Whyte notation, an 0-4-4 is a railroad steam locomotive that has four coupled driving wheels followed by four trailing wheels, with no leading wheels. This type is often called in the USA a Forney, after Matthias N. Forney, and is characterized by a single frame under the boiler and fuel/water tank, which is supported at the rear by the truck under the coal bunker/water tank.

The 0-4-4 was the precursur of other forneys which have not always been attributed to being forneys, such as the Boston & Albany and Central of New Jersey 4-6-4 Forneys which have been wrongly called "tank engines". The notable three-foot gauge 2-6-6 Forney was actually an articulated locomotive, in which the boiler and fuel/water tank were on one frame and the engine was articulated to pivot beneath the boiler, such that the valve connecting rods had to be raised in a frame up over the boiler and wide enough to accommodate the articulation of the engine under the boiler.

Other equivalent classifications are:
UIC classification: B2 (also known as German classification and Italian classification)
French classification: 022
Turkish classification: 24
Swiss classification: 2/4

Designs

In the United Kingdom, the 0-4-4 wheel arrangement is very popular with passenger tank engine designs. Examples have included the LSWR O2 Class, LSWR M7 Class and the Caledonian Railway 439 Class.

Definition from Wiktionary, a free dictionary

English

Noun

0-4-4 (plural 0-4-4s)

1. Under the Whyte notation, a steam locomotive that has four coupled driving wheels followed by four trailing wheels, with no leading wheels.

External links

• 0-4-4 on Wikipedia.Wikipedia