KJI No. 11 to 14
| KJI No. 11–14 Class 99.464 Class 99.455 |
|
|---|---|
| Numbering: | KJI No. 11-14 DR 99 4642, 4402, 4643, 4645 DR 99 4551 |
| Number: | 4th |
| Manufacturer: | Orenstein & Koppel |
| Year of construction (s): | 1922, 1924 |
| Retirement: | until 1970 |
| Type : | D n2t |
| Genre : | K 44.6 |
| Gauge : | 750 mm |
| Length over buffers: | 7445 mm 10,200 mm (99 4551) |
| Height: | 3200 mm |
| Total wheelbase: | 2595 mm |
| Empty mass: | 20.0 t |
| Service mass: | 23.7 t |
| Friction mass: | 25.0 t |
| Wheel set mass : | 6.25 t |
| Top speed: | 30 km / h |
| Indexed performance : | 170 PSi / 125 kW 200 PSi (after conversion 1964/65) |
| Starting tractive effort: | 38.34 kN |
| Coupling wheel diameter: | 800 mm |
| Control type : | Heusinger |
| Number of cylinders: | 2 |
| Cylinder diameter: | 330 mm |
| Piston stroke: | 400 mm |
| Boiler overpressure: | 12 bar |
| Number of heating pipes: | 117 |
| Heating pipe length: | 2400 mm |
| Grate area: | 1.05 m² 1.14 m² (after renovation 1964/65) |
| Radiant heating surface: | 3.96 m² 5.3 m² (after renovation 1964/65) |
| Tubular heating surface: | 35.5 m² 43.03 m² (after renovation 1964/65) |
| Evaporation heating surface: | 39.46 m² 48.33 m² (after renovation 1964/65) |
| Tender: | 2 T 5.5 |
| Water supply: | 3.0 m³ 4.0 m³ (after renovation 1964/65) |
| Fuel supply: | 1 t coal 1.1 t (after renovation 1964/65) |
Locomotives no. 11 to 14 of the narrow-gauge small railways in the Jerichow I (KJI) district were four- coupled tank locomotives . In 1949 all locomotives were taken over by the Deutsche Reichsbahn . They were given the road numbers 99 4642, 99 4643, 99 4402 and 99 4645 . The locomotive no.11 was later converted into a tender locomotive and was given the new road number 99 4551 . None of the locomotives remained.
history
To replace the locomotives no. 1 to 5 , which were now getting on in years , the circular railways of the Jerichow I district ordered five quadruple-coupled tank locomotives from Orenstein & Koppel . Two locomotives were delivered in 1922 and two in 1924.
In 1945 or 1946, locomotive No. 11 was converted into a tender locomotive. All locomotives were taken over by the Deutsche Reichsbahn in 1949. The locomotives No. 11, 12 and 14 were given the road numbers 99 4642, 99 4643 and 99 4645.
For reasons that were no longer comprehensible, locomotive No. 13 was given the wrong road number 99 4501. This contradicted the designation scheme of the Deutsche Reichsbahn. This also resulted in a double occupation with PKKB No. 15 . In 1951 the locomotive was given the road number 99 4402 . However, it was soon retired.
When the locomotive No. 11 was converted into a tender locomotive, the side water tanks were removed. An opening was made on the rear wall of the driver's cab and the roof of the driver's cab was extended to over the tender bridge. With a volume of 5.5 m³ water and 2.5 t coal of the two-axle tender, the range of the locomotive doubled. Due to its different design, the locomotive was given the road number 99 4551 in 1956 and the incorrect class code K 44.8. K 44.5 would have been correct. However, at the end of 1958 or beginning of 1959 the locomotive was dismantled. By removing the water boxes, the smoothness of the locomotive had deteriorated. In addition, the tender was worn out at this point. The company number was not changed again. In 1966 the locomotive was retired.
The other two locomotives 99 4643 and 4645 were subjected to a general overhaul in 1964/1965 in Raw Görlitz. The machines received a welded replacement boiler with a larger heating surface, which was largely identical to that of the locomotives 99 4641 and 99 4644 . The upper part of the driver's cab was provided with drawn-in side walls. To improve the running of the vehicle, the drive was also converted from the fourth to the third wheel set. After the KJI ceased operations in 1965, the two locomotives were moved to Perleberg to form the network of the former small railways in the West and East Prignitz districts. In 1969 the 99 4645 was retired. The 99 4643 was in use in 1969/1970 on the route of the Rügen Kleinbahn to the Wittower ferry and was then retired.
Constructive features
The locomotives had an internal sheet metal frame.
On the front part of the boiler sat a large steam dome with the valve regulator. The two Ramsbottom safety valves and the steam whistle sat directly in front of the cab. The round sandpit sat behind the steam dome.
The external two-cylinder wet steam engines worked on the fourth wheel set. This construction resulted in a restless vehicle run and a permanent risk of derailment. As part of the 1963/64 conversion, the drive was changed to the third wheel set. The Heusinger control with Kuhn's loop was also outside.
The smoke chamber was riveted to the long boiler. The chimney was designed similar to a Prüsmann chimney. The Latowski steam flare was installed in front of it.
The leaf spring packages were above the axle bearings.
The water supplies were housed in two water boxes on either side of the long boiler that reached up to the smoke chamber. The coal supplies were stored behind the driver's cab. The cab was very spacious and had half-height folding doors on both sides. During the renovation in 1964/65, the upper part of the side walls was pulled in. An opening flap was provided for ventilation.
The locomotives had a handbrake on delivery. A Knorr single-chamber air brake was retrofitted by the Reichsbahn. The air tank was placed across the boiler behind the chimney. The air pump was located to the left of the smoke chamber. The turbo generator for the electrical lighting was placed on the right side of the chimney.
literature
- 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. 166 f., 183 ff .
- Klaus Kieper, Reiner Preuß: GDR narrow-gauge railway archive . 2nd Edition. transpress Verlag, 1982 (reprint: 2011, ISBN 978-3-613-71405-2 ).
Individual evidence
- ↑ M. Weisbrod et al.: German Locomotive Archive: Steam Locomotives 4. 1995, p. 146.