Lenz type nn
| Lenz type nn series 99.452 |
|
|---|---|
| Numbering: | RüKB 31nn – 35nn 99 4521–4525 |
| Number: | 5 |
| Manufacturer: | Vulcan , Hanomag |
| Year of construction (s): | 1902-1911 |
| Retirement: | 1963-1965 |
| Type : | B'B n4vt |
| Genre : | K.44.5 |
| Gauge : | 750 mm |
| Length over buffers: | 7,063 mm |
| Height: | 3,140 mm |
| Width: | 1,960 mm |
| Total wheelbase: | 3,775 mm |
| Empty mass: | 17.5 t |
| Service mass: | 20.8 t |
| Friction mass: | 20.8 t |
| Top speed: | 30 km / h |
| Indexed performance : | 145 PS / 107 kW |
| Starting tractive effort: | 30.60 kN |
| Driving wheel diameter: | 720 mm |
| Control type : | Heusinger |
| Number of cylinders: | 4th |
| HD cylinder diameter: | 225 mm |
| LP cylinder diameter: | 340 mm |
| Piston stroke: | 360 mm |
| Boiler overpressure: | 12 bar |
| Grate area: | 0.73 m² |
| Evaporation heating surface: | 34.90 m² |
| Water supply: | 2.0 m³ |
| Fuel supply: | 0.7 t coal |
| Coupling type: | Balance lever coupling |
| Lenz type nn BKrb 11, GThB 12 |
|
|---|---|
| Numbering: | Bleckeder Kreisbahn 11, Gartetalbahn 12 |
| Number: | 2 |
| Manufacturer: | Orenstein & Koppel |
| Year of construction (s): | 1906 |
| Type : | B'B n4vt |
| Genre : | K.44.6 |
| Gauge : | 750 mm |
| Fixed wheelbase: | 1,300 mm |
| Total wheelbase: | 4,150 mm |
| Empty mass: | 19 t |
| Service mass: | 24 t |
| Friction mass: | 24 t |
| Wheel set mass : | 6 t |
| Top speed: | 30 km / h |
| Indexed performance : | 90 hp |
| Starting tractive effort: | 38 kN |
| Control type : | Heusinger |
| Number of cylinders: | 4th |
| HD cylinder diameter: | 250 mm |
| LP cylinder diameter: | 390 mm |
| Piston stroke: | 360 mm |
| Boiler overpressure: | 12 bar |
| Grate area: | 0.85 m² |
| Evaporation heating surface: | 43.35 m² |
| Water supply: | 3.25 m³ |
| Fuel supply: | 1.0 t coal |
| Coupling type: | Balance lever coupling |
Lenz type nn was the name for narrow-gauge Mallet locomotives with a gauge of 750 mm, which were used by various railways built and operated by Lenz & Co , including the Rügen Kleinbahn as RüKB No. 31nn to 35nn.
history
The firm Lenz & Co. acquired as uniform as possible locomotives for the railways operated by it. After the power of the existing two-axle locomotives was no longer sufficient and larger machines were required, the decision was made to order Mallet locomotives, as four-coupled locomotives were too rigid for the mostly winding routes. In 1902 the Vulcan company delivered two vehicles to the Rügen Kleinbahn (RüKB) and two more to the Pillkaller Kleinbahn . In 1905 and 1908, two more followed for RüKB. In 1909 two locomotives of this type were procured for the AG of Demminer Kleinbahn-Ost and Kleinbahn-Gesellschaft Greifswald-Wolgast , also operated by Lenz, and in 1910 one for the Insterburger Kleinbahn .
After the Pomeranian regional railway management had taken over the management of the Pomeranian railways, another locomotive of this type was manufactured by Hanomag for the Rügen Kleinbahn in 1911 , and in 1912 Hanomag delivered three more locomotives for the newly opened Demminer Kleinbahn-West .
Also Orenstein & Koppel delivered in 1904 and 1909 two Malletlokomotiven of this type in a somewhat different design for the Bleckeder circular path and the Garte Valley Railway .
One of the Pillkaller locomotives came to Serbia after the rail had been re-tracked in 1917 and was in use as JDŽ 90-009 from 1933 until after the Second World War. In 1950 it belonged to the Podlugovi heating house .
All Rügen locomotives were taken over by the Deutsche Reichsbahn on April 1, 1949 and were given the numbers 99 4521 to 99 4525. In the years 1965 to 1966, all vehicles were decommissioned and scrapped except for number 99 4525, the latter was sold. After a stay as a heating engine in Neubrandenburg, it was also dismantled there. The locomotives of the other railways came to the Soviet Union in 1945 as reparations .
technical features
The locomotives had an outer main frame with the high pressure cylinders and an inner frame for the front chassis with the low pressure cylinders. The machines had Heusinger control. The storage containers lay next to the kettle and reached up to the smoke chamber.
literature
- Horst J. Obermayer: Paperback German narrow-gauge steam locomotives . Franckh, Stuttgart 1971, ISBN 3-440-03818-1 .
- Wolfram Bäumer, Siegfried Bufe: Railways in Pomerania . Bufe-Fachbuchverlag, Egglham 1988, ISBN 3-922138-34-9 .
- Manfred Weisbrod, Hans Wiegard, Hans Müller, Wolfgang Petznick: German Locomotive Archive: Steam Locomotives 4 (Class 99) . transpress, Berlin 1995, ISBN 3-344-70903-8 , pp. 157-160; 260 .
Individual evidence
- ↑ Keith Chester: The Narrow Gauge Railways of Bosnia-Hercegovina , p. 346. Stenvall Verlag, 2006, ISBN 91-7266-166-6 .
- ^ Date of nationalization of almost all private railways in the GDR