BOB HG 2/2 11

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BOB HG 2/2
Eiger
Eiger
Numbering: 11
Number: 1
Manufacturer: SLM
Year of construction (s): 1893
Retirement: 1947
Axis formula : B.
Type : Bz
Gauge : 1000 mm ( meter gauge )
Fixed wheelbase: 1960 mm
Service mass: 15 t
Top speed: Adhesion: 30 km / h
gear: 12 km / h
Driving wheel diameter: 772 mm
Gear system : Riggenbach
Size gears: Drive
gear 764 mm, brake gear 640 mm
Control type : Joy
Number of cylinders: 2
Cylinder diameter: 285 mm
Piston stroke: 500 mm
Cylinder pressure: 12 atm
Boiler overpressure: 12 atm
Grate area: 0.48 m 2
Evaporation heating surface: 25.48 m 2
Water supply: 1600 l
Fuel supply: 500 kg of coal
Train brake: Compressed air; Joy, Westinghouse from 1921
Coupling type: Central coupling type Brünig

The HG 2/2 11 is a two-axle tender steam locomotive for the mixed adhesion and cogwheel operation of the Bernese Oberland Railway BOB . The locomotive, which was put into service in 1893, ran until 1947 and was demolished two years later.

history

The young Berner Oberland Bahnen asked BOB to remedy the expensive and unprofitable winter operation after the 1892/93 season. Compared to the previous winter months, the operation in the winter season 1892/93 was already handled with only one steam locomotive of the series HG 3/3 1-4 , a mixed passenger car 2nd and 3rd class BC 3 and a baggage car F 3 .

The train traveled from Interlaken to Zweilütschinen in a way that was inconvenient for the travelers , where the travelers to Grindelwald had to get off and wait in the waiting room or the station buffet . The train set then continued to Lauterbrunnen . After the locomotive was moved to the other end of the train, the train returned to Zweilütschinen to take passengers to Grindelwald. Shortly after arriving in Grindelwald, the train was made ready for the descent and the stations were operated in reverse order.

On March 14, 1893, the Bernese Oberland Railways submitted an application to the Federal Council and the Federal Assembly to change the concession in order to suspend rail operations from November 15 to March 15. The railway department offered to maintain winter operations only between Interlaken and Grindelwald and to compensate the Lauterbrunnen community financially. The latter rejected this plan and relied on Article 12 of the concession, which provided for at least two daily trips there and back during the winter months. The application to cease operations in the winter months was ultimately rejected.

Due to the lack of alternatives, the BOB had a two-axle steam locomotive and a mixed 2nd and 3rd class passenger car with a baggage compartment built at the Swiss Locomotive and Machine Factory SLM in Winterthur , which could handle winter operations more cheaply. The new locomotive was put into service with the BOB as HG2 No. 11 with the name " Eiger " and the car with the designation BCF 4 30 1893.

construction

The HG 2/2 11 is a unique piece of its kind. The loose brake gear rested on the front axle, while the drive gear was between the two friction drive axles . The drive took place directly via external cylinders and an external drive , which was connected to the friction and gear drive axles by means of triangular coupling rods. The drive gear was idling in adhesion mode. The piston rods were not passed through the cylinders. The type of control of the steam engine was based on the Joy design with overhead slides and scenes. The steam engine was reversed using a screw and a wheel.

The sand dome was in the same boiler casing as the steam dome. On the latter was a Ramsbottom-type safety valve . The continuous train brake was initially built according to the Klose design and was replaced by the Westinghouse system in 1921 . The locomotive reached a top speed of 30 km / h in friction mode and 10 km / h in gear mode. The purchase price of the locomotive was CHF 27,200.

commitment

The locomotive could pull four cars in friction mode and one in gear mode. For winter operation, the trailer load could be reduced from 44 t to 24.5 t thanks to the new BCF 4 30 mixed wagon . With the only trailer attached, the unpleasantly noticeable coupling shocks were also reduced. In December 1893, the first and, at the same time, only winter operation began until January 1894, as described above. The locomotive did not prove itself as hoped. In the following years, locomotive no. 11 was only used between Zweilütschinen and Lauterbrunnen during the winter months.

In the main season, the locomotive was now in use for feeder journeys Interlaken - Wilderswil to the valley station of the Schynige Platte Railway .

The counter-pressure brake was completely replaced in 1901. According to the designation system that came into force in 1903, the locomotive was renamed as HG 2/2.

In 1908 the Schweizerische Lokomotiv- und Maschinenfabrik SLM wanted to buy back the defective steam locomotive, but the BOB refused to sell it. With the arrival of the powerful HG 3/3 7–10 locomotives , the HG 2/2 fell back into reserve.

For the commissioning of the Lake Brienz Railway (opened in 1916) of the Swiss Federal Railways (SBB) , the locomotive found a new application in the Interlaken Ost shunting service. For this purpose the locomotive was completely overhauled in 1914. Whether the cogwheel drive was expanded at this point in time or not until 1920 - the locomotive only appears at this point in the statistics as G 2/2 - is not certain.

In 1921 the Klose train brake was replaced by one from the Westinghouse system. After an intermediate overhaul, the locomotive was dismantled and taken to the Lauterbrunnen-Mürren BLM mountain railway on Grütschalp , where it was reassembled. On the 4.7-kilometer route between Grütschalp and Mürren, locomotive 11 replaced the Ge 2/2 1 electric locomotive that had had an accident and was later broken off until March 1925.

For six days in June 1926, the steam locomotive, now known as the G 2/2 11, helped out at Kraftwerke Oberhasli KWO for transporting materials between Meiringen and Innertkirchen. In 1936 the locomotive was adapted for one-man operation. a. An additional brake spindle was installed on the right-hand side, which was connected to the spindle on the left-hand side by means of a Gall chain and chain wheels in casing.

After a lull in the 1930s, locomotive 11 was able to prove its raison d'etre from the beginning of the 1940s as a result of the increased traffic in the Second World War. In 1944 the management decided to no longer maintain the now 50-year-old locomotive and to replace it with a shunting tractor . In March 1946 the G 2/2 11 was shut down because the new accumulator tractor Ta 2/2 1 had to take its place. However, the latter failed in May of the same year, with the G 2/2 11 being fueled again. At the end of 1947 the "Eiger" steam locomotive was definitely decommissioned.

During the entire career, the large locomotive sign with the name "Eiger" and the initials of the BOB railway company boasted on both water boxes, but the actual locomotive number was nowhere attached.

Whereabouts

In 1949 the smallest of all BOB steam locomotives, the G 2/2 11 “Eiger”, was demolished in the Zweilütschinen workshop.

BOB number SLM serial number Construction year Delivery date Conversions Scrapping Whereabouts
11 797 1893 June 19, 1893 1901 Replacement of the counter-pressure brake
1914 Revision for the upcoming shunting operation, possibly expansion of the gear drive
1921 Replacement of the Klose train brake by Westinghouse
1936 Setup for one-man operation		 Late 1947 Demolished in 1949

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