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| Sächsische IV T DRG Class 71.3 | |||||||||||||||||||||||||||||||||||||||||||||||||||
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The Royal Saxon State Railway designated four-coupled tank locomotives for passenger train service as class IV T (four-T), and the Deutsche Reichsbahn subsequently grouped these locomotives into DRG Class 71.3 in 1925.
In terms of design, the locomotives were based on the class T 5.1 of the Prussian State Railways. Despite the defects that emerged, such as the uneven running at high speed, which led to derailments, 91 copies of this locomotive were procured from 1897 to 1909 in several lots. On Saxon routes it is not so much a high top speed that matters, but rather good acceleration due to the relatively short distance between the stops.
The first locomotives were named after small towns in Saxony [1] and were listed as VIII bb T; in 1900 the designation was changed to IV T. [2]
Locomotive 1727 was the leading locomotive in the serious accident at Braunsdorf between Braunsdorf and Frankenberg on the Roßwein–Niederwiesa railway line on 14 December 1913. The lead locomotive was repaired – hard to believe, if you look at the accident – but not until 1933 when it became DRG 71 322.
The Deutsche Reichsbahn took over 85 locomotives of this type and gave them the numbers 71 301 to 71 385. Six locomotives were taken out of service shortly before the re-designation; another wave of retirement followed around 1930. After World War II, two locomotives remained with ČSD, while ten locomotives came to the Deutsche Reichsbahn. The locomotives were retired by the Deutsche Reichsbahn by 1955; none of them survived. [3]
The two-ring boiler provided saturated steam to the two cylinders which had a bore of 430 mm (16+15⁄16 in) and a stroke of 600 mm (23+5⁄8 in). The connecting rod drove the second axle via Heusinger (Walschaerts) valve gear. The driving wheels were of 1,590 mm (5 ft 2+1⁄2 in) diameter.
The fixed wheelbase of the coupled driving axles was 2,000 mm (6 ft 6+3⁄4 in), the total wheelbase was 6,800 mm (22 ft 3+3⁄4 in). The two carrying axles were designed as Adam axles.
The first delivery series had a 12-millimetre (1⁄2 in) thick riveted plate frame; from 1902, the plate frames were 20 millimetres (13⁄16 in) thick. In the last series, cutouts were also left in the firebox area.
In addition to handbrake, the Westinghouse brake, which acted on both sets of coupling wheels, was available. The air pump required for this was arranged on the right-hand side of the smokebox.
Between the frames was a well tank with a capacity of 5,600 litres (1,200 imp gal; 1,500 US gal); from 1906 the locomotives were supplied with additional water tanks on the side, increasing the capacity to 7,500 litres (1,600 imp gal; 2,000 US gal). All previously delivered machines were later retrofitted in this way. The coal supply of 1,600 kilograms (3,500 lb) was subsequently increased in some locomotives and / or a coal box attachment was added so that a maximum of 2 cubic metres (71 cu ft) of coal could be loaded.
The first delivery series had a driver's cab with a large door cutout; from 1902, the locomotives were instead equipped with sliding windows on the side. The ventilation attachment on the driver's cab roof was subsequently supplemented by four ventilation hoods.
The German Class 99.73-76 engines were standard locomotives (Einheitslokomotiven) in service with the Deutsche Reichsbahn for Saxony's narrow gauge railways. Together with their follow-on class, the DR Class 99.77-79, they were the most powerful narrow gauge locomotives in Germany for the 750 mm track gauge.
The only Bavarian Class Gts 4/4 locomotive in the Royal Bavarian State Railways was built in 1909 for the meter gauge line between Eichstätt and Kinding.
The Württemberg Hz were 0-10-0 rack and adhesion steam locomotives, that were initially developed by the Royal Württemberg State Railways, but were delivered to the Deutsche Reichsbahn-Gesellschaft (DRG) in the mid-1920s.
The Württemberg T 3s were German steam locomotives with the Royal Württemberg State Railways delivered between 1891 and 1913.
The Saxon Class XVIII was a German six-coupled tender locomotive built for the Royal Saxon State Railways in 1917/18 for express train services. The Deutsche Reichsbahn grouped them in 1925 into DRG Class 18.0.
The Saxon Class XX were German eight-coupled express train, tender locomotives built for the Royal Saxon State Railways just after the First World War. The locomotives, which became known as the 'Pride of Saxony' (Sachsenstolz) were the first and only German express locomotives with a 2-8-2 wheel arrangement and, at the time of their appearance, were the largest express engines in the whole of Europe. In 1925, the Deutsche Reichsbahn grouped these locomotive into their DRG Class 19.0.
The Saxon Class XIV T locomotives were six-coupled tank engines operated by the Royal Saxon State Railways for mixed duties on main and branch lines. In 1925, the Deutsche Reichsbahn grouped them into their DRG Class 75.5.
The Prussian state railways grouped a variety of different types of passenger tank locomotive into its Prussian Class T 5. Several examples of the sub-classes T 5.1 and T 5.2 transferred into the Deutsche Reichsbahn as DRG Classes 71.0 and 72.0.
The Saxon Class XV T was a class of goods train steam locomotive operated by the Royal Saxon State Railways, which had been conceived for hauling trains and acting as banking engines for routes in the Ore Mountains. In 1925 the Deutsche Reichsbahn grouped them into their DRG Class 79.0.
The Saxon Class V K were German 0-8-0T narrow gauge steam locomotives operated by the Royal Saxon State Railways which had been primarily intended for the Müglitztalbahn. In 1925 the Deutsche Reichsbahn incorporated arranged these locomotives as DRG Class 99.61.
The Prussian Class T 14.1 was a German 2-8-2T, goods train, tank locomotive operated by the Prussian state railways and the Royal Württemberg State Railways. They were later incorporated by the Deutsche Reichsbahn into the DRG renumbering plan for steam locomotives as DRG Class 93.5–12.
The Royal Saxon State Railways designated four-coupled, Atlantic (4-4-2) express locomotives as Class X and the Deutsche Reichsbahn subsequently grouped these locomotives into DRG Class 14.2 in 1925.
The Prussian Class T 3 steam locomotives procured for the Prussian state railways were 0-6-0 tank locomotives. Together with the Prussian T 2 they were the first locomotives that were built to railway norms. The first units were delivered by Henschel in 1882.
The Saxon Class VII T were twin-coupled tank engines of the Royal Saxon State Railways designed for branch line (Sekundärbahn) operations. In 1925, the Deutsche Reichsbahn grouped these locomotives 1925 into their Class 98.70.
The Saxon Class IIIb was a twin-coupled tender locomotive built for passenger services with the Royal Saxon State Railways.
The Saxon Class VIII 2 was a twin-coupled tender locomotive procured for passenger services by the Royal Saxon State Railways. In 1925, the Deutsche Reichsbahn grouped these engines into their Class 36.9-10.
The Saxon Class V was a triple-coupled, goods train, tender locomotive operated by the Royal Saxon State Railways. In 1925, the Deutsche Reichsbahn regrouped the locomotives 25 into their DRG Class 53.6–7.
The Saxon class I T were a class of 19 German 0-4-4-0 Meyer tank locomotives built for the Royal Saxon State Railways for service of the Windbergbahn. The Deutsche Reichsbahn assigned them to Class 98.0.
The Saxon III K were a class of six 0-6-2T locomotives of the Royal Saxon State Railways with a track gauge of 750 mm. In 1925, the Deutsche Reichsbahn grouped these locomotives into their DRG Class 99.754.
The Württemberg Tss 4 was a class of three 750-mm gauge 0-8-0T locomotives of the Royal Württemberg State Railways (Königlich Württembergischen Staats-Eisenbahnen, K.W.St.E.). They were used on the Bottwartalbahn between Heilbronn Süd and Marbach am Neckar. While in service, the locomotives were based at Beilstein. The Tss 4 were the first 750-mm gauge steam locomotives to be equipped with the Klose drive system.
| Early locomotives |  | |
|---|---|---|
| Passenger and express train locomotives | ||
| Mixed traffic and goods train locomotives | ||
| Tank locomotives | ||
| Narrow gauge and fireless locomotives | ||
| Railbuses and electric locomotives | ||