Pechot-Bourdon
| Pechot-Bourdon | |
|---|---|
 Péchot-Bourdon (Baldwin company photo)
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| Number: | approx. 350 |
| Manufacturer: | Baldwin , North British , various French manufacturers |
| Year of construction (s): | 1888-1916, 1921 |
| Type : | B'B 'n4t |
| Gauge : | 600 mm |
| Length: | 5,762 mm (without couplings) |
| Trunnion Distance: | 2,900 mm |
| Bogie axle base: | 900 mm |
| Total wheelbase: | 3,800 mm |
| Smallest bef. Radius: | 20 m |
| Service mass: | 12,790 t |
| Friction mass: | 12,790 t |
| Wheel set mass : | 3.2 t |
| Top speed: | 12 km / h |
| Driving wheel diameter: | 650 mm |
| Cylinder diameter: | 175 mm |
| Piston stroke: | 240 mm |
| Boiler overpressure: | 12 bar |
| Grate area: | 0.474 m² |
| Radiant heating surface: | 3.762 m² |
| Tubular heating surface: | 23.225 m² |
| Water supply: | 1.514 m³ |
| Fuel supply: | 0.4 t |
The steam locomotives of the Péchot-Bourdon type were Fairlie locomotives that were developed for the French military's light railways . Their track width was 600 mm.
history
The Péchot-Bourdon is named after its inventors, an artillery captain named Péchot and an engineer named Bourdon . The two received a patent for this design in 1887, which contained some design features that set them apart from the British Fairlie locomotives, which were also patented (see technology ).
The French Army Railroad (Chemin de fer militaire stratégique) used these locomotives primarily for transporting heavy ammunition. By 1914, various French manufacturers ( Cail , Decauville , Fives-Lille ) had delivered 52 copies.
After the outbreak of World War I , the French government awarded contracts to the USA to build locomotives because its own factories were busy with the production of armaments. Baldwin produced a total of 280 Péchot-Bourdon locomotives - the first 100 in less than three months after the order was placed on February 1, 1915. The remaining machines were delivered by 1916. Another 15 locomotives were built by the North British Locomotive Company .
The locomotives were mainly used for the shuttle service between the existing rail network and the front lines and fortress structures. 19 locomotives are said to have been delivered to Algeria. Baldwin built a single locomotive of this type again for the Japanese military railways in 1921. However, there were no more deliveries or a replica in Japan.
technology
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Although the double boiler and two powered bogies are in principle double Fairlies, the Péchot-Bourdon locomotives differ in some characteristic points from the British Fairlie locomotives. The decisive difference is the single steam dome in the middle of the locomotive, while the "real" Fairlie locomotives always have two steam domes. The advantage of this design was a constant water level in the area of the cathedral, regardless of the gradient of the route. The relatively short boiler halves also contributed to the fact that the water level was still sufficient even with a 10% gradient.
The bogies enable radii with a radius of 20 m or more to be negotiated. The pivot pins of the bogies are designed in such a way that the steam is directed through them to the cylinders. At the inner end of the bogies there is a spring-loaded support that balances the weight of the cylinders and ensures that the load is evenly distributed over all four axles.
Both steam engines can be controlled independently of each other - in the event of damage to one of the two engines, a locomotive could still be driven out of the danger zone.
Whereabouts
Two surviving specimens are known today.
During the Second World War, two Péchot-Bourdon locomotives came to Yugoslavia and were used in an open- cast brown coal mine near Kostolac in Serbia until the 1950s . Then one of the locomotives came to the Belgrade Railway Museum and later to the Požega Narrow Gauge Museum .
The other locomotive is believed to be from a delivery by Baldwin Locomotive Works in the USA in 1916 to the French or American army. It was used in 1944 on the Wehrmacht's land exercise area in Dessau . In 1945 she drove on the Magdeburg rubble railway . Finally she came to Dresden in 1955 via the Reichsbahn repair shop in Karl-Marx-Stadt . VEB Lokreparatur Tharandt refurbished the locomotive in 1958 to make it suitable for a museum. It was then exhibited in the Dresden Transport Museum until it was brought to the Frankfurt Feldbahnmuseum on September 20, 2019 .
On the Magdeburg rubble railway (1950) ...
... and until 2019 in the Dresden Transport Museum.
“Kostolac” in the Museum in Požega (2003).
literature
- Rolf Ostendorf: Unusual steam locomotives from 1803 to today . Motorbuch Verlag Stuttgart, ISBN 3-87943-406-9 .
- Gerhard Arndt, Dieter Bäzold: Museum locomotives and railcars in the GDR . transpress VEB Verlag for Transport Berlin 1986, ISBN 3-344-00002-0 .
Individual evidence
- ↑ a b c There are different details about the exact figures. Arnd and Bäzold give the number of locomotives built by Baldwin as 180 and those built by North British as 100. The numbers 58 and 61 are also found for the number of machines built in France.
- ↑ Data sheet Pechot Type Locomotive for the French Government
- ↑ www.heeresfeldbahn.de - Baldwin 41983/1915
- ↑ www.heeresfeldbahn.de - Baldwin 43367/1916
- ↑ Takeover of the Pechot-Bourdon field railway steam locomotive of the VMD by the FFM.
