Badische XII (old)
| XII III (from 1868) |
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|---|---|
 No. 127 EBERBACH
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| Numbering: | 3… 149 |
| Number: | 41 |
| Manufacturer: | MBG Karlsruhe |
| Year of construction (s): | 1861-1865 |
| Retirement: | until 1904 |
| Axis formula : | 2'Bn2 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 13,447 mm |
| Height: | 4,500 mm |
| Bogie axle base: | 1,032 mm |
| Total wheelbase: | 4,500 mm |
| Wheelbase with tender: | 10,127 mm |
| Empty mass: | 25.50 t |
| Service mass: | 28.65 t |
| Friction mass: | 16.00 t |
| Wheel set mass : | 8.00 t |
| Top speed: | 60 km / h |
| Coupling wheel diameter: | 1,830 mm |
| Impeller diameter: | 950 mm |
| Control type : | Stephenson |
| Number of cylinders: | 2 |
| Cylinder diameter: | 405 mm |
| Piston stroke: | 560 mm |
| Boiler : | Crampton |
| Boiler overpressure: | 7 bar 8 bar (year of construction 1864/65) |
| Number of heating pipes: | 215 |
| Heating pipe length: | 3,305 mm 3,455 mm (built in 1864/65) |
| Grate area: | 0.97 m² |
| Radiant heating surface: | 5.86 m² |
| Tubular heating surface: | 80.36 m² 84.01 m² (built in 1864/65) |
| Evaporation heating surface: | 86.22 m² 89.87 m² (built in 1864/65) |
| Locomotive brake: | Screw brake on the tender |
The vehicles of type XII , from 1868 III , of the Grand Ducal Baden State Railway were passenger steam locomotives .
history
Since the vehicles were manufactured in a total of six deliveries over a period of 4 years and the respective state of the art was observed with each delivery, all series showed differences. The vehicles were used on all routes in Baden . For many years, the locomotives were considered to be the backbone for passenger and express train services on the entire Baden rail network. Since the route from Waldshut to Constance led partly over Swiss territory and the intention was to use similar vehicles, the construction was based on the vehicles of the Swiss Northeast Railway .
Badische III b
In the years 1881 to 1891 a total of 70 locomotives of types III and IIIa were converted and assigned to type IIIb . They received a boiler with a larger grate area of 1.31 m², at the same time the frame had to be extended at the front.
Constructive features
Due to the two driven axles, the friction mass could be increased compared to the previous locomotives with the 1A1 wheel arrangement. The axles of the locomotives were placed close together with a total wheelbase of 4.5 m. The added distance between the wheels was just 33 cm. The suspension of the coupling axles with thrown spring clips and pressure screws over the spring ends gave the machines a special look. Despite a relatively small grate area, the locomotives developed good steam and accordingly had a good power output.
The locomotives of the first series from 1861 had an external filling frame that was perforated in the area of the coupling axles. From the second series onwards, sheet metal frames without cutouts were used. The bogie had an inner frame made of sheet metal.
The machines had a Crampton kettle with a steam dome over the fire box and two spring balance valves. The boiler was fed by a drive pump and a Giffard injector.
The two-cylinder wet steam engine was external. The valve boxes were inclined inward. The drive rod acted on the first coupled axle.
A screw brake on the tender acted as a brake on all wheels. The locomotives only had a narrow protective roof on the driver's cab. It was only from the last series onwards that the roof was extended to the rear edge of the vehicle and sheet metal side walls were added with windows.
The vehicles were equipped with type 3 T 5.67, 2 T 5.67 and 3 T 5.4 tenders .
Footnotes
- ↑ To differentiate between the locomotives designated according to the 1868 scheme, also designated as XII (old) .
literature
- Hermann Lohr, Georg Thielmann: Baden locomotive archive . transpress, Berlin 1988, ISBN 3344002104