Swiss Locomotive and Machine Works

Swiss Locomotive and Machine Works (German Schweizerische Lokomotiv- und Maschinenfabrik; French Société Suisse pour la Construction de Locomotives et de Machines; or for both, SLM) was a railway equipment manufacturer based in Winterthur in Switzerland. Much of the world's mountain railway equipment was constructed by the company.

Swiss Locomotive and Machine Works

SLM is best known for mountain railway equipment
Company type	Subsidiary
Industry	Rail transport
Founded	1871; 153 years ago (1871)
Defunct	2005
Successor	Stadler Rail
Headquarters	Winterthur, Switzerland
Area served	Worldwide
Products	Electric locomotives Steam locomotives Railcars

Manitou and Pike's Peak Railway, Colorado, USA

History

The company was founded in 1871 by the British engineer Charles Brown.^[1] SLM built both steam and electric locomotives, including the crocodile type.

From 1992, SLM returned to producing steam locomotives designed around advanced steam technology principles. This included rebuilding DR Class 52.80 locomotive number 52 8055.^[2]

In 1998, the cog-railway division was sold to Stadler Rail, and the engineering division, via Adtranz, to Bombardier Transportation. The remaining business was renamed Sulzer-Winpro AG and as part of a management buyout in 2001, was renamed Winpro AG.

The advanced steam division was sold in 2000 to Dampflokomotiv- und Maschinenfabrik AG (Steam Locomotive and Machine Works Ltd), or DLM AG.^[3]

In October 2001, the measurement division was sold to PROSE AG.

Winpro AG was sold on 7 September 2005 to Stadler Rail.

Preserved SLM Locomotives

Finland

Image	Class	Built	Number	Type	SLM Number	Wheel arrangement	Location	Notes
	Sk1	1885	124	Mixed traffic steam locomotive	405	2-6-0	Finnish Railway Museum
	F1	1886	132	Passenger steam locomotive	434	0-4-4T	Finnish Railway Museum	“Felix”

France

Image	Class	Built	Number	Type	SLM Number	Wheel arrangement	Location	Notes
		1923	6	Mountain railway rack steam locomotive		2-4-2T	Chamonix	Last of 6 built for Chemin de fer du Montenvers
		1909	3 Mlle d'Angeville	Mountain railway rack steam locomotive	1990	0-4-0T	Saint-Gervais-les-Bains	One of five built for the Mont Blanc Tramway
		1909	4 Jules Jansen	Mountain railway rack steam locomotive	1991	0-4-0T	Saint-Gervais-les-Bains	One of five built for the Mont Blanc Tramway

India

Image	Class	Built	Number	Type	SLM Number	Wheel arrangement	Location	Notes
	WCG1 khekda (crab)	1928	4502, Sir Leslie Wilson	1,500 V DC, 650 hp Electric goods locomotive		C-C	National Rail Museum, New Delhi	10 built by SLM 31 similar built by Vulcan Foundry[4]

Indonesia

Image	Class	Built	Number	Type	SLM Number	Wheel arrangement	Location	Notes
	SLM HGm4/6 (PJKA Class BB204)	1993	BB204 15 BB204 16	Diesel Electric rack locomotive	5631-5632	Bo-2-Bo	Solok depot, West Sumatra	Stored at Solok depot[5]
	SS 1600 (DKA CC50)	1928	CC50 29 (SS 1629)	Articulated mallet locomotive	3253	2-6-6-0	Ambarawa Railway Museum, Central Java	16 built by SLM, 14 similar built by Werkspoor[6]
	SS 1100 (DKA C27)	1916	C27 10 (SS 1110)	Baltic express locomotive	2584	4-6-4T	Transportation Museum of Taman Mini Indonesia Indah, Jakarta	29 delivered between 1916 and 1922, built by SLM, Armstrong Whitworth and Werkspoor.[7]

Switzerland

Image	Class	Built	Number	Type	SLM Number	Wheel arrangement	Location	Notes
		1902	5	Narrow gauge steam locomotive	1440	0-6-0T	Waldenburg railway	Built for the Waldenburg railway; gauge 750 mm (2 ft 5+1⁄2 in); named Gedeon Thommen[8]
		1912	6	Narrow gauge steam locomotive	2276	0-6-0T	Swiss Museum of Transport	Built for the Waldenburg railway; gauge 750 mm (2 ft 5+1⁄2 in); named Waldenburg[8]
	Ge 6/6	1912-1929	402, 406, 407, 411, 414, 415	Narrow gauge electric locomotive		0-6-6-0	Various locations	Built for Rhaetian Railway; gauge 1,000 mm (3 ft 3+3⁄8 in)

United Kingdom

Image	Class	Built	Number	Type	SLM Number	Wheel arrangement	Location	Notes
		1895	2 Enid	Mountain railway rack steam locomotive	924	0-4-2RT	Snowdon Mountain Railway
		1895	3 Wyddfa	Mountain railway rack steam locomotive	925	0-4-2RT	Snowdon Mountain Railway
		1896	4 Snowdon	Mountain railway rack steam locomotive	988	0-4-2RT	Snowdon Mountain Railway
		1896	5 Moel Siabod	Mountain railway rack steam locomotive	989	0-4-2RT	Snowdon Mountain Railway
		1922	6 Padarn	Mountain railway rack steam locomotive	2838	0-4-2RT	Snowdon Mountain Railway
		1923	7 Ralph Sadler	Mountain railway rack steam locomotive	2869	0-4-2RT	Snowdon Mountain Railway
		1923	8 Eryri	Mountain railway rack steam locomotive	2870	0-4-2RT	Snowdon Mountain Railway

See also

• SLM factories
• Jakob Buchli - a railway pioneer with the SLM

Gallery

• 
  Builder's Plate of Swiss Locomotive and Machine Works Societe Suisse locomotive No 434 of 1886 0-4-4T at the Finnish Railway Museum
• 
  SLM built this 1050mm gauge 2-8-0 for the Hejaz Railway in 1912 and it was still at work on Palestine Railways in 1946.
• 
  SLM locomotives are still at work in India on some heritage railways.
• 
  Builder's Plate 2-6-0 Swiss Locomotive and Machine Works Societe Suisse Locomotive No 405 from 1885 at the Finnish Railway Museum
• 
  Electric railcars built by SLM are used in the Pilatus Railway
• 
  The express engines 4-6-2 SS Class 700 or PNKA C50 which were ordered by Staatsspoorwegen from SLM and Hartmann for line in Java, came in 1911-1914

References

1. "Correspondence 60".
2. "DLM's Kriegslok 52-8055 | 5AT Advanced Steam Locomotive Project".
3. Dickinson, Rob. "Sulzer Winpro sells Steam Business to Hug Engineering". International Working Steam Locomotives. Retrieved 2008-03-06.
4. Hollingsworth, Brian; Cook, Arthur (2000). "Class WCG1". Modern Locomotives. pp. 50–51. ISBN 0-86288-351-2.
5. "BB 204 dan Kereta Penumpang Nippon Sharyo Mulai Ditanahkan". redigest.web.id (in Indonesian). 16 May 2019. Retrieved 28 January 2022.
6. De Jong, H. (1986). De Locomotieven van Werkspoor (in Dutch). Alk. ISBN 9789060139332.
7. Oegema, J.J.G. (1982). De Stoomtractie op Java en Sumatra (in Dutch). Deventer-Antwerpen: Kluwer Technische Boeken B.V. ISBN 9020115200.
8. "Switzerland's Waldenburgerbahn, 2010". www.internationalsteam.co.uk. Retrieved 2015-01-26.