The NSB Type 12a, NSB Type 12b and NSB Type 12c were three steam locomotives built between 1891 and 1898 by

Sächsische Maschinenfabrik The Sächsische Maschinenfabrik in Chemnitz was one of the most important engineering companies in Saxony in the second half of the 19th century and the first two decades of the 20th century. Including its various predecessor businesses, the firm ...

and

Dübs and Company Dübs & Co. was a locomotive manufacturer in Glasgow, Scotland, founded by Henry Dübs in 1863 and based at the Queens Park Works in Polmadie. In 1903 it amalgamated with two other Glasgow locomotive manufacturers to create the North British Loc ...

for use on various railway lines in Norway. They were

tank engines A tank locomotive is a steam locomotive which carries its water in one or more on-board water tanks, instead of a more traditional tender. Most tank engines also have bunkers (or fuel tanks) to hold fuel; in a tender-tank locomotive a tender h ...

, which were useful so they wouldn't have to be turned around.

History

The Norwegian railway lines, which were owned by the state, were administratively separate entities at the time. Locomotives were therefore permanently assigned to routes. It was not until July 1, 1920, that the Type 12 series steam locomotives, intended primarily for hauling local passenger trains, were officially assigned to the Oslo District.

NSB Type 12a

12a no. 67 (Dübs 2846) was built for local trains between

Kristiania Oslo ( or ; ) is the capital and most populous city of Norway. It constitutes both a county and a municipality. The municipality of Oslo had a population of in 2022, while the city's greater urban area had a population of 1,064,235 in 2022, an ...

and

Ljan Ljan () is a residential neighborhood in the borough Nordstrand in Oslo, Norway. It is located in the eastern rolling hillsides of the fjord Bunnefjorden. To the south Ljanselva which begins at Lutvann has its mouth, and where it runs through ...

on the Smaalensbane (SB). The locomotive was ordered on November 18, 1890. After delivery in October 1891, she was put in service in November. It was fitted with a

Bissel bogie A Bissell or Bissel truck (also Bissel bogie or pony truck) is a single-axle bogie which pivots towards the centre of a steam locomotive to enable it to negotiate curves more easily. Invented in 1857 by and usually then known as a ''pony truck'' ...

at the front and an

Adams axle The Adams axle is a form of radial axle for rail locomotives that enable them to negotiate curves more easily. It was invented by William Bridges Adams and patented in 1865. The invention uses axle boxes that slide on an arc in shaped horn bloc ...

at the rear, and was a high-pressure, saturated steam locomotive. This was the same design as the NSB Type 11, which was being constructed and supplied at the same time by Dübs and Company. The locomotive was withdrawn on March 24, 1952, and then scrapped.

NSB Type 12b/12c

The other two locomotives—12c no. 100 and 12b no. 101—were ordered from the Sächsische Maschinenfabrik on February 23, 1897, and delivered on 1898 with factory numbers 2311 and 2311. From April 4, 1898, they were used on the Jaren–Røykenvik line belonging to the Kristiania–Gjøvikbanen (KGB) and had to run trains between

Jaren Jaren is the administrative centre of Gran Municipality in Innlandet county, Norway. The village is located about to the northwest of the capital city of Oslo. The lake Randsfjorden (Norway's fourth largest lake) lies about west of Jaren. The ...

and Røykenvik. Both locomotives were compound steam locomotives, unlike 12a no. 67. This locomotive type was further developed, and the successor was delivered to the Vossebane in 1904 as the Type 20. 12c no. 100 differed from 12b no. 101 slightly due to having larger water and coal capacity. Both locomotives were put aside on October 25, 1951, Withdrawn on February 16, 1953, and then scrapped.

References

General references

* T. Bjerke, TB Hansen, EW Johansson, S. Sando. Edited by Norwegian Railway Club. Oslo / Lillehammer / Trondheim 1987, ISBN 82-90286-09-0, S. 133–134 (Norwegian).

External links

Type 12
– NJK Materielldatabasen (Norwegian).
Type 12 picture
- Bilde på digitaltmuseum.no (Norwegian).
Delivery list Nydqvist & Holm AB – Bofors-Nohab AB, Trollhättan, Sverige.
In: www.svenska-lok.se. (Swedish). {{Rolling stock of Norway Steam locomotives of Norway 2-6-2T locomotives 1′C1′ n2t locomotives Standard-gauge locomotives of Norway Railway locomotives introduced in 1891 Scrapped locomotives