The Prussian P 4 was a derivative of the P 4.1 (Hanover variant) and the second

superheated A superheater is a device used to convert saturated steam or wet steam into superheated steam or dry steam. Superheated steam is used in steam turbines for electricity generation, steam engines, and in processes such as steam reforming. There are ...

steam locomotive in the world.

Design

The engine was based on that of the Class P 4.1 that had

Hanomag Hanomag (Hannoversche Maschinenbau AG, ) was a German producer of steam locomotives, tractors, trucks and military vehicles in Hanover. Hanomag first achieved international fame by delivering numerous steam locomotives to Finland, Romania and ...

had produced in large numbers since 1892. It had slightly larger wheels and, due to its new design, significantly fewer heating tubes. The superheater and the steam engine were entirely independent designs.

Service and preservation

In 1898 a one-off was delivered by

to the

Prussian state railways The term Prussian state railways (German: ''Preußische Staatseisenbahnen'') encompasses those railway organisations that were owned or managed by the State of Prussia. The words "state railways" are not capitalized because Prussia did not have a ...

. The economy of the superheated system was soon proven in 1899 by the engine during trial runs from Kassel. Apart from a short stay at Halle the engine was assigned to Kassel as ''Cassel 131'' and, from 1906, as ''P 4 Cassel 1846''. In 1921, after the

First World War World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

, the engine was mothballed, along with many other machines of similar class. With its sectioned boiler the P 4 stood for a long time in the Transport and Construction Museums, part of ''Museum of the Present'' at

Hamburger Bahnhof Hamburger Bahnhof is the former terminus of the Berlin–Hamburg Railway in Berlin, Germany, on Invalidenstrasse in the Moabit district opposite the Charité hospital. Today it serves as a contemporary art museum, the , part of the Berlin Nati ...

in Berlin.

References

* {{DEFAULTSORT:Prussian P 04 P 04 4-4-0 locomotives Passenger locomotives Railway locomotives introduced in 1898 Standard gauge locomotives of Germany 2′B h2 locomotives

Design

Service and preservation

See also

References