FS Class 410 were 0-8-0 steam locomotives which the

Italian State Railways Ferrovie dello Stato Italiane S.p.A. ( "Italian Railways of the State"; previously only Ferrovie dello Stato, hence the abbreviation FS) is Italy's national state-owned railway holding company that manages transport, infrastructure, real estat ...

(FS) acquired from Rete Sicula (the Sicilian Network) on nationalization in 1906.

History

The class was designed by the Sicula Network Research Office led by engineer Guglielmo Cappa as part of a renewal and unification programme to replace obsolete rolling stock inherited from the previous management. It was designated as a group F, according to the custom that was then to define with letters the group of locomotives according to their function, and numbered from 301 to 325. When they passed to FS, they were registered as Class 420. They had some technical differences from other FS 0-8-0 locomotives, notably the use of

Walschaerts valve gear The Walschaerts valve gear is a type of valve gear used to regulate the flow of steam to the pistons in steam locomotives, invented by Belgian railway engineer Egide Walschaerts in 1844. The gear is sometimes named without the final "s", since it ...

instead of Stephenson. They were built in three batches and there were some detail differences between batches. The first unit was ordered from Breda in

Milan Milan ( , , Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city h ...

and delivered in 1892 and a further 21 units came from Ansaldo's

Sampierdarena Sampierdarena (also San Pier d'Arena; Ligurian: San Pè d'ænn-a) is a major port and industrial area of Genoa, in northwest Italy. With San Teodoro it forms the West Central (Centro Ovest) ''municipio''. Geography Sampierdarena lies on t ...

factory between 1893 and 1894. Finally in 1903 another batch of 3 locomotives was built and delivered by

Officine Meccaniche Officine Meccaniche or OM was an Italian car and truck manufacturing company. It was founded in 1899 in Milan as Società Anonima Officine Meccaniche to manufacture railway rolling stock and car production began in 1918. It disappeared as s ...

of Milan. In 1906 the transfer to FS occurred, and the locomotives received the new four-digit markings 4101-4125 which later became 410.001-025. The locomotives spent their working lives on the island of

Sicily (man) it, Siciliana (woman) , population_note = , population_blank1_title = , population_blank1 = , demographics_type1 = Ethnicity , demographics1_footnotes = , demographi ...

Features

The Class 410 locomotives, with a power output of , were versatile machines and designed for every type of use, although the small wheels (diameter ) limited the speed to . They were built for

saturated steam Steam is a substance containing water in the gas phase, and sometimes also an aerosol of liquid water droplets, or air. This may occur due to evaporation or due to boiling, where heat is applied until water reaches the enthalpy of vaporization ...

and simple expansion with 2 outside cylinders. Steam distribution was by slide valves with

History

Features

References

Further reading