Württemberg Tss 4
| Württemberg Tss 4 DR class 99.62 |
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| Numbering: | No. 11-13 DR: 99 621-622 |
| Number: | 3 |
| Manufacturer: | Machine factory in Esslingen |
| Year of construction (s): | 1894 |
| Retirement: | until 1928 |
| Type : | D n2t |
| Genre : | K 44.7 |
| Gauge : | 750 mm |
| Length over buffers: | 8,115 mm |
| Height: | 3,330 mm |
| Width: | 2,400 mm |
| Total wheelbase: | 4,500 mm |
| Empty mass: | 21.22 t |
| Service mass: | 27.72 t |
| Friction mass: | 27.72 t |
| Top speed: | 30 km / h |
| Driving wheel diameter: | 900 mm |
| Control type : | Toilets |
| Number of cylinders: | 2 |
| Cylinder diameter: | 340 mm |
| Piston stroke: | 500 mm |
| Boiler overpressure: | 12 kgf / cm² 117.7 N / cm² |
| Grate area: | 0.98 m² |
| Evaporation heating surface: | 59.67 m² |
| Water supply: | 3.04 m³ |
| Fuel supply: | 1.0 t coal |
The Württembergische Tss 4 was a narrow-gauge steam locomotive series of the Royal Württemberg State Railways . It was used on the Bottwartalbahn between Heilbronn Süd and Marbach am Neckar . The locomotives were stationed in Beilstein during their service . The Tss 4 were the first steam locomotives for 750 mm gauge that were equipped with a Klose engine .
history
The three Tss 4 had the lane numbers 11, 12 and 13. They also had names: No. 11 was called " Grossbottwar ", No. 12 " Oberstenfeld " and No. 13 "Beilstein". It was built by the Esslingen machine works with the serial numbers 2638 (No. 11), 2639 (No. 12) and 2640 (No. 13). With the opening of the section from Marbach to Beilstein, they began their service on May 10, 1894. Since the entire route was commissioned on December 1, 1900, they also drove to Heilbronn-Süd. At the beginning they managed the business alone. Quiet running and tractive power were convincing. From 1899 the Tss 4 got company from the Tssd 42 , a mallet locomotive. The Tssd were still procured for the Bottwartalbahn, which meant a departure from the maintenance-intensive Klose engine. Nevertheless, the three Tss 4 remained in service until the early days of the Reichsbahn , even if the locomotives were often shut down or repaired in the 1920s because of their worn out engines. In 1923 the newer Sächsische VI K sealed the end of the Tss 4 on its main line. Locomotives 12 and 13 still received the Reichsbahn numbers 99 621 and 99 622. No 11 was not redrawn and was eliminated in 1923. The other two were shut down in 1926. Locomotive 11 was retired in 1925, the two redrawn locomotives in 1928 and then scrapped.
technical features
The three tank locomotives were derived from the Ts 4 and adapted to the gauge of 750 mm. The wheelbase was however extended to 4.5 m. Unlike the meter-gauge Ts 4, the fourth axle under the driver's cab was positioned at a large distance from the third axle. The steam locomotives had two inner cylinders arranged at an angle. They worked on the second axle, which was firmly located in the outer frame and which was designed without flanges . The control, the two valve boxes with the flat slide valves and the engine were attached outside the frame. The engine was of the Klose type and therefore had levers arranged according to the pattern of a double parallelogram . It was located below the large cutout in the water tank above the second axis. The first and fourth axes were swiveled in via the third axis, which can be moved laterally by +/- 31 mm, in accordance with the track curve (= radial) by shortening or lengthening the coupling rods using the levers in the parallelograms according to the curve.
The cab was open at the sides and back. In order not to expose the locomotive personnel to wind and weather when reversing, the locomotives could be turned on the turntables in Marbach and Heilbronn-Süd and therefore always drive with the chimney ahead. The water tanks on the side of the boiler reached up to the smoke chamber. Coal was carried in the driver's cab. The machines held 3.04 m³ of water and 1.0 tons of coal . When they were delivered, the locomotives had Kobel chimneys to suppress flying sparks. They were later replaced by tall, conical chimneys.
The locomotives had a riveted sheet metal frame. The three-section long boiler had a distance of 3.30 m between the pipe walls. The steam dome was on the first boiler section, the sand dome on the second boiler section. There was a Ramsbottom safety valve that was initially located on the standing tank inside the driver's cab. It was later installed on the long boiler behind the steam dome.
The brakes were equipped with a Westinghouse air brake for the train and an external spindle brake. This worked diagonally from above on the second axis. There was also a hand-operated sand spreading device.
literature
- Manfred Weisbrod, Hans Wiegard, Hans Müller, Wolfgang Petznick: Steam locomotives 4th class 99 . In: German Locomotive Archive . Transpress, Berlin 1995, ISBN 3-344-70903-8 , pp. 84-86 .
- Hermann Lohr, Georg Theilmann: Locomotives of the Württemberg railways . alba, Düsseldorf 1988, ISBN 3-87094-117-0 .
- Wolfgang Frank: Photo of OBERSTENFELDER surfaced , in: Geschichtsblätter aus dem Bottwartal 8, Großbottwar 1999, pp. 41–43 (with ill.).
- Ludger Kenning: The Bottwartal and the Zabergäubahn . Kenning, Nordhorn 2004, ISBN 3-933613-47-7 .
- Wolfram Berner: From the Bosna to the Bottwar. The BEILSTEIN steam locomotive based on the Klose system . In: Geschichtsblätter aus dem Bottwartal 13, Großbottwar 2016, pp. 88–92 (with 3 illustrations).
