page_title: Bavarian PtL 2/2
section_title: 1908 and 1911 versions
hierarchical_section_title: Bavarian PtL 2/2 / 1908 and 1911 versions
caption_attribution_description: English: German Steam locomotive Class 98 No. 98307 (ex. Bavarian PtL 2/2) "Glaskasten" at the German Steam Locomotive Museum (DDM), Neuenmarkt-Wirsberg (Bavaria) in June 2006 Deutsch: 98 307 Glaskasten (PtL 2/2) im Deutschen Dampflokomotiv-Museum (DDM) in Neuenmarkt-Wirsberg, Juni 2006
context_page_description: The Class PtL 2/2 locomotives of the Royal Bavarian State Railways were light and very compact superheated steam locomotives for operation on Bavarian branch lines. There were three types in total, of which two were transferred to the Deutsche Reichsbahn-Gesellschaft as Class 98.3 tank locomotives and even survived to join the Deutsche Bundesbahn fleet after the Second World War.
  Common to all the variants was the B axle arrangement or 0-4-0, the semi-automatic, gravity-feed firing that enabled one-man operation, and platforms with guard rails, front and rear, that enabled safe access to the coaches. The locomotives had a large driver's cab with 3 windows per side that surrounded the entire locomotive boiler as far as the smokebox. This unique feature earned it the nickname Glaskasten or, in Franconia, Glas-Chaise.
context_section_description: In 1908 and 1909 Krauss supplied 29 locomotives with a conventional outside driving gear, which nevertheless used a jack shaft between the main axles. They were given locomotive numbers 4507 - 4535. This driving gear enabled the water tank to be located below the boiler in the frame, so that there was more space on the gangways.
  Three further locomotives of this type were procured by the Prussian state railways in 1910 and were designated as the Prussian Class T 2.
  In 1911 and 1914 two further batches of nine and four locomotives were supplied to the Royal Bavarian State Railways. On these, the jackshaft was left out and the wheelbase reduced from 3,200 mm to 2,700 mm. These engines were also shorter overall and lighter than the versions built up to 1909.
  The Deutsche Reichsbahn-Gesellschaft took over 22 locomotives, numbering them 98 301 - 98 322. Nine of these came from the first series with the jackshaft.
caption: Number 98 307, the Glaskasten at the DDM.
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