BT Eb 3/5
| Eb 3/5 | |
|---|---|
 |
|
| Numbering: | 1-9 |
| Number: | 9 |
| Manufacturer: | Maffei |
| Year of construction (s): | 1910 |
| Retirement: | 1959-1965 |
| Axis formula : | 1'C1 ' |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 12,320 mm |
| Fixed wheelbase: | 3800 mm |
| Total wheelbase: | 8700 mm |
| Empty mass: | 55.3-56.0 tons |
| Service mass: | 74.3-75.1 t |
| Friction mass: | 47.4-48.2 t |
| Top speed: | 75 km / h |
| Indexed performance : | approx. 1000 PS (735 kW ) |
| Starting tractive effort: | 78,000 kN (8,000 k p ) |
| Driving wheel diameter: | 1540 mm |
| Impeller diameter: | 870 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 540 mm |
| Piston stroke: | 600 mm |
| Boiler overpressure: | 12 atm (11.8 bar ) |
| Number of heating pipes: | 152/18, Clench 258 |
| Heating pipe length: | 4450 mm |
| Grate area: | 2.4 m² |
| Radiant heating surface: | 10.5 m² |
| Superheater area : | 34.2-40.8 m² |
| Evaporation heating surface: | 170.3-173.7 m² |
| Water supply: | 10 m³ |
| Fuel supply: | 3 t (coal) |
| Brake: | Westinghouse double brake |
The BT Eb 3/5 is a twin superheated steam tank locomotive with a 1'C1 ' wheel arrangement, which the Bodensee-Toggenburg-Bahn (BT) acquired for the start of operations in 1910. The company JA Maffei in Munich was commissioned to build the locomotives , which for financial reasons received the blow from the local industry.
construction
The Eb 3/5 was used as a universal locomotive for the transport of passenger and freight trains. The construction of the locomotive was based on that from JS Ec 3/4 , but was dimensioned more powerfully, which is why a rear running axle was necessary. The tank locomotive can carry 10 m³ of water and 3 t of coal, which is sufficient for driving a heavy express train from Romanshorn to Rapperswil .
With an output of around 1000 PS (735 kW ), the locomotives can move a 120 t express train at 50 km / h or a freight train weighing 200 t at 35 km / h on a 20 ‰ gradient.
In order to avoid turning off in the end stations, it is possible to travel in both directions at a maximum speed of 75 km / h. Double-arranged operating devices and a mirror for observing the speedometer and manometer make it easier for the driver to reverse.
The locomotives 1 to 4 were from the factory with Schmidt - superheater initially provided, the numbers 5 to 9 with an Clench steam dryer.
Operation on the Bodensee – Toggenburg Railway
Because BT was operated by the Swiss Federal Railways until 1917 , the tank locomotives were initially stationed in the Rorschach depot . The young Federal Railways soon came to appreciate the Maffei locomotives and obtained 34 successors from SLM in Winterthur , which were referred to as SBB Eb 3/5 5801–5834.
The locomotives with Schmidt superheaters had a significantly lower consumption of coal, which is why locomotives 5 to 9 were converted to this superheater system in 1911/12. 1921–1928 Worthington type feedwater preheaters were installed in various locomotives.
The BT steam locomotives were used alternately with SBB machines. When the Maffei locomotives were at home in the Rorschach depot, they were often used on the SBB route from Rorschach to St. Gallen . Later they often drove from Romanshorn to Konstanz and Schaffhausen .
In allusion to the large coal box, the Eb 3/5 received the nickname BT-Habersack (Hafersack), while the sisters were referred to as SBB-Habersack on the federal railways .
Sale to the Swiss Federal Railways
After the start of electrical operations in 1933, BT sold the nine steam locomotives to the Swiss Federal Railways (SBB), which they continued to use as Eb 3/5 5881-5889. The locomotives were quite popular with the staff and, together with their successors 5801–5834, were used in front of passenger and freight trains throughout Switzerland. The elegant Maffei locomotives were retired between 1959 and 1965.
Monument and historic locomotives
In 1965 the discarded Eb 3/5 5886 (BT No. 6) was returned to BT, which restored it and erected it as a technical monument in Degersheim .
In 1966 the Dampf-Loki-Club (DLC) Herisau acquired the Eb 3/5 5889. The locomotive was given the original BT number 9 again. Since then, the nostalgic steam train known under the name "Amor-Express" can be rented for weddings and social trips with the two-axle wagons that have been refurbished. The DLC also regularly organizes special public trips.
Locomotive BT number 6 has belonged to the Club del San Gottardo in Mendrisio since 2004, which wants to restore the historic locomotive and get it back on the rails.
See also
- SBB Eb 3/5 , the "successor model" of the SBB (1911–1916).
Individual evidence
- ↑ A monument has been dismantled . St. Galler Tagblatt. August 28, 2004. Retrieved October 23, 2011.
- ↑ Roots are forgotten . St. Galler Tagblatt. August 28, 2010. Retrieved October 23, 2011.
literature
- Gerhard Oswald: The Bodensee – Toggenburg Railway . Appenzeller Verlag, Herisau 2004, ISBN 978-3-85882-361-8 .
- Peter Willen: Locomotives in Switzerland, standard gauge traction units . Orell Füssli Verlag, Zurich 1972
- Hans Waldburger: 75 years of Lake Constance – Toggenburg and Rickenbahn . In: Swiss Railway Review, issue 4/1985, ISSN 1022-7113 , p. 114