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.

(SLM 0-4-2T 2838, 1922) SLM is best known around the world for mountain railway engines.

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

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]

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[5]
		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[5]

United Kingdom

Built	Number	Type	SLM Number	Wheel arrangement	Location
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

Indonesia

Class	Built	Type	Wheel arrangement	Location	Notes
HGm4/6(BB 204)	1981-1984	Diesel Electric	Bo-2-Bo	PT KAI DIVRE II West Sumatera	Only at Padang and Solok
SSS100/E10	1921-1928	Steam Rack Locomotive	0-10-0RT	PT KAI	Previously had Staatsspoorwegen ter Sumatra's Westkust with name SSS100
ESS 3000	1924	Electric Locomotive	2-8-2	PT KAI	In Batavia (now Jakarta) but this locomotive has been reduced 1970.

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 on 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

References

http://www.irsociety.co.uk/Archives/60/Letters_60.htm
http://5at.co.uk/index.php/modern-steam-2/modern-steam-miscellany/dlm-52-8055.html
Dickinson, Rob. "Sulzer Winpro sells Steam Business to Hug Engineering". International Working Steam Locomotives. Retrieved 2008-03-06.
Hollingsworth, Brian; Cook, Arthur (2000). "Class WCG1". Modern Locomotives. pp. 50–51. ISBN 0-86288-351-2.
"Switzerland's Waldenburgerbahn, 2010". www.internationalsteam.co.uk. Retrieved 2015-01-26.

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[1] ttp://www.irsociety.co.uk/Archives/60/Letters_60.htm

[2] ttp://5at.co.uk/index.php/modern-steam-2/modern-steam-miscellany/dlm-52-8055.html

[3] Dickinson, Rob. "Sulzer Winpro sells Steam Business to Hug Engineering". International Working Steam Locomotives. Retrieved 2008-03-06.

[Modern_Locomotives,_WCG1-4] Hollingsworth, Brian; Cook, Arthur (2000). "Class WCG1". Modern Locomotives. pp. 50–51. ISBN 0-86288-351-2.

[iswb-5] "Switzerland's Waldenburgerbahn, 2010". www.internationalsteam.co.uk. Retrieved 2015-01-26.