Etat 0-6-0 Locomotives in France

Class 3061 (Locobase 11269)

Data from Maurice Demoulin, Traite Pratique de la Machine Locomotive (Paris: Libraire Polytechnique, Baudry et Cie, 1898), pp. 125-126. These were built by Fives-Lille (15)

SACM (15), and SociTtT J. F. Cail & Cie. (10)

Locobase 11268 described the class derived from PLM's Bourbonnaise 6-coupled; it entered service on the Etat in 1874. This batch was based on a Midi class, although it was "noticeably less powerful". The dome was positioned well forward (as in the 3139 class); it contained not only the safety-valve assembly, but also the swan's neck regulator.

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Class 3139 (Locobase 11268)

Data from Maurice Demoulin, Traite Pratique de la Machine Locomotive (Paris: Libraire Polytechnique, Baudry et Cie, 1898), pp. 125-126.

As Demoulin noted, these six-coupled engines took their lines from the widely distributed Bourbonnaise class of the PLM (Locobase 599). The boilers had a bit less heating surface area, the grate a skosh more. They had a typical Etat look, he says, in placing a large dome with internal safety valve well forward on the boiler and using balanced valves.

See Locobase 11269 for the variant that rolled on 1,500-mm diameter drivers.

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Class 3500 (Locobase 11270)

Data from Maurice Demoulin, Traite Pratique de la Machine Locomotive (Paris: Libraire Polytechnique, Baudry et Cie, 1898), pp. 125-126.

Produced in the same mold as the 3069s (Locobase 11269) that were themselves based on the Midi's 6-coupled engine, this later batch had larger cylinders and a slightly larger grate.

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Class unknown (Locobase 12125)

Data from A Mallet, "Developpment de L'Application du System Compound", Memoirs ...Societe des Ingenieurs Civils, Annee [Juillet] 1890, Vol II (Paris: SIC, 1890). table pp. 42-43.

Another example of Mallet's own two-cylinder cross-compounding system.

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Class unknown (Locobase 15527)

Data from SACM diagram Nr. 65 from Societe Alsacienne de Constructions Mecaniques from locomotive book supplied by Dany Machi up at [] as

Diagrammes des machines SACM construites a GRAFENSTADEN (October 2007).

Tube diameter is the interior measurement. The relatively tall drivers mark this six-coupled as a mixed-traffic locomotive (and as its designation "Mixte" implies).