Prussian T 31
Various three-axle narrow - gauge locomotives were designated as the Prussian T 31 type , which had been taken over when the Thuringian meter-gauge railways and the Upper Silesian narrow-gauge railways (gauge 785 mm) were nationalized.
Narrow gauge railways in Thuringia
Various narrow-gauge railways were built in Thuringia, the Hildburghausen-Heldburger Eisenbahn (HHE), the narrow-gauge Eisfeld-Untereubrunn and the Feldabahn . The first two were taken over by the Prussian State Railways in 1885 , the Feldabahn in 1902. The three-axle tank locomotives there were from Krauss produced, were classified under various other designations (up to 1906: No. 1597–1604, and 1906–1910: T 28 No. 9101–9108) from 1911 onwards as T 31. There were different types.
T 31 for 1000 mm gauge
| T 31 (Prussia) DR 99 7101 |
|
|---|---|
| Numbering: | Erfurt 1–5, 7–8 (DR 99 7101) * |
| Number: | 7th |
| Manufacturer: | Krauss |
| Year of construction (s): | 1879-1887 |
| Retirement: | 1914, 1924 * |
| Type : | C n2t |
| Genre : | K 33.7 |
| Gauge : | 1000 mm ( meter gauge ) |
| Length over buffers: | 5,540 mm; 5,905 mm * |
| Height: | 3,420 mm |
| Width: | 2,000 mm |
| Total wheelbase: | 1,800 mm |
| Service mass: | 14.0 t; 16.0 t * |
| Top speed: | 15 km / h; 25 km / h * |
| Driving wheel diameter: | 800 mm |
| Control type : | Allan |
| Number of cylinders: | 2 |
| Cylinder diameter: | 260 mm |
| Piston stroke: | 400 mm |
| Boiler overpressure: | 12 bar |
| Grate area: | 0.43 m²; 0.52 m² * |
| Evaporation heating surface: | 23.48 m²; 35.00 m² * |
| Water supply: | 1.60 m²; 1.10 m³ * |
| Fuel supply: | 0.8 tons of coal |
| The individual dimensions of the locomotives differ from one another. There are also different statements in the literature. Information marked with * refer to Erfurt 4 |
|
history
In 1879 the Feldabahn procured two locomotives, WERRA and FELDA. At the state railway they were last numbered Erfurt 2 and Erfurt 1 , they were probably retired in 1914. The third locomotive of the Feldabahn, RHÖN, was almost identical in construction, although it was converted to the new Kaysersberger Talbahn in Alsace after just five years . In 1882 another locomotive was added, the boiler dimensions of which corresponded to the first two locomotives, but had an extended frame that allowed a larger water tank. The output was also increased from 80 hp to 100 hp. It was named WEIMAR, later Erfurt 3 . In 1883 an identical locomotive was added, first DERNBACH, from 1884 RHÖN II , and finally Erfurt 4 . Both locomotives were also retired in 1914/15.
Similar Krauss locomotives were procured on the HHE in 1887, they were named HILDBURGHAUSEN, HELDBURG and FRIEDRICHSHALL, later Erfurt 5, 7 and 8 . The locomotives went to the Heeresfeldbahnen in 1915/16. The DACHS locomotive of the Kerkerbachbahn was built in 1889 according to the same drawing .
The Erfurt 4 (or 7) was still available when the Deutsche Reichsbahn was founded and was to be given the number 99 7101, but was retired in 1925.
technical features
The locomotives had an inner frame with a water box. They had Allan controls . The crosshead also powered a water pump. Since this only worked when driving, steam jet pumps were installed later . The drive rod acted on the third axle, the wheels were disk wheels. At WERRA, FELDA and RHÖN, the engine was covered by side flaps until around 1900. A monstrous snow plow could also be built in front of it. The locomotives did not have a steam dome, steam was drawn off using a regulator sleeve.
T 31.1 for 1000 mm track width
| T 31.1 (Prussia) DR 99 7102 |
|
|---|---|
| Numbering: | Erfurt 6 DR 99 7102 |
| Number: | 2 |
| Manufacturer: | Krauss |
| Year of construction (s): | 1889 |
| Retirement: | 1926 |
| Type : | C n2t |
| Genre : | K 33.7 |
| Gauge : | 1000 mm ( meter gauge ) |
| Length over buffers: | 6,740 mm |
| Height: | 3,700 mm |
| Total wheelbase: | 2,250 mm |
| Service mass: | 19.0 t |
| Friction mass: | 19.0 t |
| Top speed: | 25 km / h |
| Driving wheel diameter: | 895 mm |
| Control type : | Heusinger |
| Number of cylinders: | 2 |
| Cylinder diameter: | 260 mm |
| Piston stroke: | 400 mm |
| Boiler overpressure: | 12 bar |
| Grate area: | 0.94 m² |
| Evaporation heating surface: | 50.77 m² |
| Water supply: | 1.50 m³ |
| Fuel supply: | 0.65 t |
history
From 1890, two locomotives were used on the narrow-gauge Eisfeld – Unterneubrunn railway, the EISFELD and the UNTERNEUBRUNN. The former was converted to the HHE in 1908 when more powerful locomotives were available. It was given the number Erfurt 6 . It was still there when the Deutsche Reichsbahn was redesigned and was given the number 99 7102, but it was withdrawn from service soon after 1926. UNTERNEUBRUNN was sold to the Myslowitz coal mine in Silesia in 1906 . In 1921 she bought the Walhallabahn there and gave it number 63. Since it was too heavy for the Regenbrücke, it was sold on to the Rübenbahn Wallersdorf – Mönchshofen in 1928 . In 1938 it was retired after an accident.
technical features
In terms of construction, these locomotives were similar to the first, but they were slightly larger in size. The locomotives had Heusinger controls . They also had a steam dome and enlarged lateral water boxes.
Upper Silesian narrow-gauge railway
The Upper Silesian Narrow Gauge Railway connected hard coal mines, iron and steel works, factories and power plants in the Upper Silesian coal area. This railway came into the ownership of the Prussian State Railway in 1884 ; the company was not taken over until 1904. In 1872, 17 small type B n2t locomotives were delivered by Krauss and Hagans. When these were no longer sufficient, the procurement of triple-coupled locomotives of the later T 31 and T 31.1 types began.
T 31 and T 31.1 for 785 mm track width
| T 31.1 (Prussia) (DR series 99.740-741) |
|
|---|---|
| Numbering: | Katowice 6 - 40 (DR: 99 7401–7404, 99 7411–7413) |
| Number: | 28 |
| Manufacturer: | Krauss , Hagans |
| Year of construction (s): | 1884-1899 |
| Retirement: | 1924 |
| Type : | C n2t |
| Genre : | K 33.6, K 33.5 |
| Gauge : | 785 mm |
| Service mass: | 19.0 t |
| Friction mass: | 19.0 t |
| Top speed: | 25 km / h |
| Driving wheel diameter: | 895 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 260 mm |
| Piston stroke: | 400 mm |
| Boiler overpressure: | 12 bar |
| Grate area: | 0.94 m² |
| Evaporation heating surface: | 51.01 m² |
From 1875 22 locomotives of the later class T 31 were delivered by the companies Krauss and Hagans . From 1884 to 1899, 28 locomotives of the later T 31.1 class followed, all of which were built by Krauss. From 1911 they received numbers as Kattowitz 1-40. After the division of Upper Silesia in 1922, most of the locomotives came to Poland. The German Reichsbahn took over in their renumbering plan of 1923 seven locomotives than 99 from 7401 to 7404 and 99 7411 to 7413, but they looked to 1924.
Web links
- Images of the locomotives of the Upper Silesian narrow-gauge railway: [1]
literature
- Horst J. Obermayer: Paperback German narrow-gauge steam locomotives. Franckh, Stuttgart 1971, ISBN 3-440-03818-1
- Ulf Haußen, Waldemar Haußen: The Feldabahn. First meter-gauge railway in Germany. Bufe-Fachbuchverlag, Egglham 1993, ISBN 3-922138-49-7
- Klaus Kieper, Reiner Preuß: Narrow gauge between the Baltic Sea and the Ore Mountains. Alba Buchverlag, Düsseldorf 1980. ISBN 3-87094-069-7