SCB Ed 3/3
| Ed 3/3 | |
|---|---|
| Numbering: | 61-64 + 80 |
| Number: | 5 |
| Manufacturer: | SCB Olten |
| Year of construction (s): | 1868-1873 |
| Retirement: | 1884-1893 |
| Axis formula : | C ' |
| Gauge : | 1435 mm ( standard gauge ) |
| Fixed wheelbase: | 3000 mm (3300 mm) |
| Total wheelbase: | 3000 mm (3300 mm) |
| Empty mass: | 32.9 t (34.5 t) |
| Service mass: | 39.9 t (41.0 t) |
| Friction mass: | 39.9 t (41.0 t) |
| Indexed performance : | (370 hp) |
| Starting tractive effort: | 5000 kg |
| Driving wheel diameter: | 1155 mm |
| Control type : | Allan |
| Number of cylinders: | 2 |
| Cylinder diameter: | 435 mm |
| Piston stroke: | 610 mm |
| Boiler overpressure: | 10 bar |
| Number of heating pipes: | 164 |
| Heating pipe length: | 3805 mm (4105 mm) |
| Grate area: | 1.3 m² |
| Evaporation heating surface: | 93.7 m² (100.4 m²) |
| Water supply: | 3.5 m³ |
| Fuel supply: | 1.0 t coal |
| Brake: | Vapor barrier |
The Swiss Central Railway ( SCB ) procured a total of 5 tender steam locomotives of the type Ed 3/3 between 1868 and 1873 . The purchase price of the first four machines is quoted at 50,000 Swiss francs, while the fifth was booked at 58,800 Swiss francs.
Technical
The SCB Werkstätte Olten built 4 identical locomotives between 1868 and 1869, and in 1873 they built a fifth locomotive, which incorporated isolated improvements. The tank locomotives were purchased for the pre-tensioning service at Hauenstein . But they should also transport freight trains on the connecting lines.
The locomotives had an inner frame. The short wheelbase of 3000 mm and the fact that all axles were in front of the fire box resulted in a large rear overhang. Because of this, the locomotives ran very unevenly. In the case of the number 80, the wheelbase was lengthened by 300 mm, but since the boiler was also lengthened by this dimension, the rear overhang remained the same. The center of the boiler was 1740 mm above the top of the rail. The boiler did not have a steam dome , but there was a sand dome and a Crampton case on top of it. The slide regulators operated by levers were located in this housing. The outer inlet pipes also led from the housing to the cylinders. The three spring balance safety valves were located on the regulator housing and fitting dome. The first four locomotives initially had wheels with full wheel centers, these were later replaced by spoked wheels. The engine acted on the third axis (drive axis). From this the other axles were driven via coupling rods. An Allan control with an eccentric was available as control. The reversal was carried out with a screw, wheel and upper control shaft. The piston rods were not carried forward. All springs were above the axles and the attachment points were under the running plate. The water boxes were to the side of the boiler, the coal box behind the driver's cab. A two-block spindle brake was installed, which acted on the drive axis. A vapor barrier was used as a power brake . The control and slide suggest that a counter-pressure brake has been set up, but this has not been proven.
| SCB | Surname | Factory number |
Construction year | Manufacturer | Discarded |
|---|---|---|---|---|---|
| 61 | Hegiberg | 13 | 1868 | SCB Olten | 1884 |
| 62 | Dürrenberg | 14th | 1868 | SCB Olten | 1889 |
| 63 | Loetschberg | 15th | 1869 | SCB Olten | 1893 |
| 64 | Wisenberg | 16 | 1869 | SCB Olten | 1885 |
| 80 | Hagberg | 24 | 1873 | SCB Olten | 1893 |
Operational
The relatively quick scrapping can be attributed to two reasons. Once it was anything but popular with the staff due to the restless running. On the other hand, the supplies of fuel for a machine of this performance class were far too small, but could not be increased because it was already using the maximum axle pressure.
swell
- Alfred Moser: The steam operation of the Swiss railways 1847-1966 . 6th updated and supplementary edition, Birkhäuser, Stuttgart 1975. ISBN 3-7642-0742-0 , p. 174ff