Development
After the Prussian steam locomotive classes S 4 and S 5 proved less than fully satisfactory, there was a requirement in Prussia for faster and more powerful express locomotives. To that end the Head of the Locomotive Design and Procurement Department, Robert Garbe, proposed to the Locomotive Committee in 1904 a design by Linke-Hofmann of Breslau for a 4-4-0 superheated, express train locomotive. This was an evolutionary development of the Prussian Class S 4 that also had a 4-4-0 configuration. In putting this forward, Garbe was especially keen to prove the superiority of his design compared with the four-cylinder, wet steam, compound locomotives, particularly its predecessor, the Prussian Class S 7.
In 1905/1906 Garbe pushed through the construction of the S 6. Between 1906 and 1913 a total of 584 units were manufactured by Linke-Hofmann, Henschel-Werke and the Maschinenbauanstalt Humboldt in Cologne. They were the last four-coupled, express locomotives to be built in Germany and, for a long time, were the most economical locomotives in the Prussian state railways.
Read more about this topic: Prussian S 6
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