AB G 3/4
| G 3/4 | |
|---|---|
 |
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| Numbering: | 5-6 |
| Number: | 2 |
| Manufacturer: | SLM |
| Year of construction (s): | 1886-1887 |
| Retirement: | 1941-1952 |
| Axis formula : | C1 ' |
| Gauge : | 1000 mm ( meter gauge ) |
| Length over coupling: | 7310 mm |
| Fixed wheelbase: | 2150 mm |
| Total wheelbase: | 3900 mm |
| Empty mass: | 18.7 t |
| Service mass: | 24.7 t |
| Friction mass: | 21.0 t |
| Top speed: | 35 km / h |
| Driving wheel diameter: | 900 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 310 mm |
| Piston stroke: | 450 mm |
| Boiler overpressure: | 10 atü 11 atü (from 1902) |
| Number of heating pipes: | 123 |
| Heating pipe length: | 2850 mm |
| Grate area: | 0.7 m² |
| Evaporation heating surface: | 54.4 m² |
| Water supply: | 2.5 m³ |
| Fuel supply: | 1.2 t (coal) |
| Speedometer: | Peyer- Favarger |
| Particularities: | No. 6: Hardy steam sand spreader |
The G 3/4 were meter-gauge wet steam tank locomotives with a C1 ' wheel arrangement, which Appenzeller Bahn AB put into operation in 1886/87 on the occasion of the extension of its railway line from Urnäsch to Appenzell .
construction
The construction of the G 3/4 was basically based on the predecessor model G 3/3 , whereby the experiences made in the meantime were incorporated as improvements. To reduce the overhang, to better distribute the load and to increase the supplies, an Adam axle was installed as the rear axle. The outer frame and the crank drive with Walschaerts control remained the same in order to be able to use the same spare parts. The boiler carried a steam dome with a spring balance safety valve. The side water boxes had a rectangular cross-section and were shorter despite the larger content. The coal box was behind the driver's cab outside the driver's cab. The machines had a counter pressure brake and steam heating .
Operation, changes
The permissible trailer loads corresponded to those of the G 3/3. After the G 4/5 went into operation , the G 3/4 were allocated to the reserve. The top speed was increased from 30 km / h to 35 km / h in 1924. The G 3/4 5 received a major overhaul in 1932. Until the arrival of the BCe 4/4 44 and 45 , it was used on major traffic days with Alpine cattle transports or on Sundays in front of goods and special trains on rural communities .
The spindle brake the locomotive was from 1887 through the Körting - vacuum brake for the train, and from 1897 with the Westinghouse brake supplements, which also appeared in contrast to the vacuum brake on the locomotive wheels. The air tank was on the boiler, the air pump was attached to the right of the smoke chamber . The steam pressure was increased from 10 to 11 atmospheres in 1902 . In 1904 the machines were fitted with Klose type safety valves .
Whereabouts
The G 3/4 6 was scrapped in 1941. Locomotive 5 initially remained as a catenary-independent reserve, was given the number 50 in 1949 and remained in the AB stock until 1952. In 1972, the Appenzeller Bahn steam locomotive association acquired the similar G 3/4 14 for use in front of nostalgic trains from the Rhaetian Railway .
List of G 3/4 of the Appenzell Railway
| Company number |
Surname | Factory number |
Construction year | discarded |
|---|---|---|---|---|
| 5 | Waldstatt , from 1910: Ebenalp | 428 | 1886 | 1952 |
| 6th | High alp | 459 | 1887 | 1941 |
literature
- Alfred Moser: The steam operation of the Swiss railways 1847-1966. 4th updated edition, Birkhäuser, Stuttgart 1967. P. 336 ff.
- Hans Waldburger: Appenzeller Bahn (AB) 1875 - 1988 (Part 6) ( Memento from February 19, 2005 in the Internet Archive ) On: Website of the Swiss Amateur Railway Club Zurich (SEAK) , 2000. ( Memento from October 25, 2007 in the Internet Archive )
Individual evidence
- ^ History. On the website of the Appenzeller Bahnen Steam Locomotive Association, accessed on February 1, 2019
| Meter gauge |
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| Track width 1200 mm |
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| Standard gauge (1435 mm) |