WN No. 11 and 12
| WN 11 and 12 | |
|---|---|
 Locomotive 12 in Neresheim (2006)
|
|
| Number: | 2 |
| Manufacturer: | Esslingen |
| Year of construction (s): | 1913 |
| Axis formula : | B. |
| Gauge : | 1000 mm ( meter gauge ) |
| Length over buffers: | 6,180 mm |
| Height: | 3,600 mm |
| Width: | 2,650 mm |
| Total wheelbase: | 2,000 mm |
| Empty mass: | 14.5 t |
| Service mass: | 20.0 t |
| Friction mass: | 20.0 t |
| Top speed: | 30 km / h |
| Driving wheel diameter: | 800 mm |
| Control type : | Heusinger on the outside |
| Number of cylinders: | 2 |
| Cylinder diameter: | 320 mm |
| Piston stroke: | 360 mm |
| Boiler overpressure: | 12 kg / cm² |
| Number of heating pipes: | 86 |
| Heating pipe length: | 2,000 mm |
| Grate area: | 0.642 m² |
| Tubular heating surface: | 28 m² |
| Superheater area : | 16.7 m² |
| Water supply: | 1.53 m³ |
| Fuel supply: | 0.5 t coal |
The WN Nos. 11 and 12 are unpowered axles biaxial tank locomotives that in 1913 Maschinenfabrik Esslingen for Härtsfeldbahn were built. The locomotives belonged to the Württemberg branch lines (WN), which had taken over the Härtsfeldbahn on January 1, 1910.
history
The locomotives were largely developed by the engineer Max Mayer from Esslingen at the time and had the serial numbers 3710 and 3711. They were mainly used for passenger trains, but they were too weak for freight trains on the steep inclines; Mallet locomotives were used for this . They proved themselves in the company and were popular with the staff. Locomotive 12 was damaged in 1945 by the effects of the war, but was repaired in the Härtsfeldbahn workshop. When railcar traffic began in 1956, both locomotives were only used as reserves. They were taken out of service in 1962 (locomotive 12) and 1964 (locomotive 11) at the latest.
technical features
The locomotives were among the first small railroad locomotives to be equipped with superheater technology. There were Schmidt's used superheater. The locomotives have piston valves and a Heusinger control . The second axis was driven. A throw lever brake was used as the brake and a Hardy suction air brake as the pull brake . The locomotives had a Latowski steam flare. The water tank was located between the frame and the long boiler, the coal tank on the back of the driver's cab. The locomotives were equipped for one-man operation, so they also had a transition to the train at both ends. At the front there was a transition bridge, a railing on the circumferential sheet metal of the boiler and the driver's cab steps were extended to the end of the locomotive. Locomotive 11 was initially equipped with a preheater , but it was removed again in the mid-1920s.
In the early 1950s, the suction air brake was replaced by an air brake . The silencer for this was installed in front of the chimney.
Whereabouts
Both locomotives were bought by a private person in 1965 and have been preserved.
Locomotive 11 was erected as a memorial in front of the Neresheim station in 1966 . In 1984 it was restored and came to the Härtsfeld Museum Railway . It is a listed building and has been undergoing processing since 2010 (as of 2019).
Locomotive 12 was set up in 1966 in Heidenheim on a playground at the Voith company . In 1986 it came to the Härtsfeld Museum Railway in Neresheim and has been operational since 1994 after being refurbished.
literature
- Jürgen Ranger: 100 years of locomotives 11 and 12. In: Die Museums-Eisenbahn, ISSN 0936-4609 , issue 3/2013, p. 12f.
- Kurt Seidel: The Härtsfeldbahn Aalen – Neresheim – Dillingen . Horst-Werner Dumjahn Verlag, Mainz 1979, ISBN 3-921426-12-X . 1st edition: Bridge to Härtsfeld . Schwäbisch Gmünd 1962