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Français : La «double mountain articulee», de construction française, destinee au P. L. M. Algérien

VOICI LA «DOUBLE MOUNTAIN ARTICULEE», DE CONSTRUCTION FRANÇAISE, DESTINEE AU P. L. M. ALGÉRIEN.

Cette machine de 28 roues, dont 16 motrices, accouplées par belle, est longue de 28 mètres. Malgré cette longueur et grâce à son articulation en trois parties (les deux trucks moteurs d'une part et la chaudière d'autre part), elle peut s'inscrire dans des courbes de 120 mètres de rayon seulement. Malgré le faible écartement de sa voie, imo55, son poids à vide atteint 10S.000 kilos et en charge 147.000 kilos. Sa puissance dépasse 1.800 chevaux. Sa vitesse maxima peut atteindre 63 kilo à l'heure. Au crochet elle peut développer un effort de traction moyen de 18.000 kilos. Dans son tenter arrière, la locomotive emporte 6.000 kilos de charbon et 14 mètres cubes d'eau. Dans son tenter avant il y a également 14 mètres cubes d'eau. Elle

est munie des derniers perfectionnements : 4 cylindres simple expansion (deux à l avant, deux à l'arrière) réchauffage d'eau d'alimentation (dont le réservoir se trouve entre la cheminée et la cabine) surchauffe de la vapeur et freinage particulièrement puissant, à vapeur et à vide (on voit sur le tenter arrière les quatre réservoirs de vide) doublé d'un freinage de secours à air comprimé et à main (on voit sur le tenter avant les deux réservoirs d'air comprimé). La cabine et les phares avant et arrière sont éclairés électriquement. Sur voie normale de 1m435, la « Mountain » du P. L. M. métropolitain pour trains rapides lourds, pèse 133.000 kilos à vide avec son tenter (au lieu de 105.000 kilos sur voie de 1m055).

76 SCIENCE ET MONDE
English: HERE'S THE FRENCH-BUILT "DOUBLE MOUNTAIN ARTICULEE" FOR THE ALGERIAN P.L.M.

This machine has 28 wheels, 16 of which are powered, and is 28 metres long. Despite this length, and thanks to its three-part articulation (the two motor trucks on one side and the boiler on the other), it can negotiate curves with a radius of just 120 metres. Despite its narrow track gauge, imo55, it weighs 10,000 kilos unladen and 147,000 kilos laden. Its power is in excess of 1,800 bhp. Its maximum speed can reach 63 kilos per hour. On the hook, it can develop an average tractive effort of 18,000 kilos. In its rear axle, the locomotive carries 6,000 kilos of coal and 14 cubic metres of water. The front axle also holds 14 cubic metres of water.

It is fitted with the latest improvements: 4 single-expansion cylinders (two at the front, two at the rear), heating of the feed water (the reservoir of which is located between the chimney and the cab), superheating of the steam and particularly powerful steam and vacuum braking (the four vacuum reservoirs can be seen on the rear tent) coupled with emergency compressed air and hand braking (the two compressed air reservoirs can be seen on the front tent). The cab and front and rear lights are electrically illuminated. On a standard track of 1m435, the "Mountain" of the P. L. M. métropolitain for heavy fast trains weighs 133,000 kilos empty with its tenter (instead of 105,000 kilos on a track of 1m055).

76 SCIENCE AND THE WORLD
Date
Source https://www.retronews.fr/journal/science-et-monde/4-fevrier-1932/2523/3434373/11
Author Science et Monde, 4-fevrier-1932, p.11/15

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This work is in the public domain in France for one of the following reasons:
  • Its author (or the last of its authors in the case of a collaboration work) died more than 70 years ago (CPI art. L123-1) and did not benefit from any copyright extension (CPI art. L123-8, L123-9 and L123-10)[1];
  • It is an anonymous or pseudonymous work (the identity of the author has never been disclosed) or a collective work[2] and more than 70 years have passed since its publication (CPI art. L123-3);
  • It is the recording of an audiovisual or musical work already in the public domain, and more than 50 years have passed since the performance or the recording (CPI art. L211-4).
Please note that moral rights still apply when the work is in the public domain. They encompass, among others, the right to the respect of the author's name, quality and work (CPI art. L121-1). Attribution therefore remains mandatory.
  1. ↑ Copyright extensions must be considered only in the case of musical works and of authors Mort pour la France (died during conflict, in the service of France). In other cases, they are included in the 70 years post mortem auctoris length (see this statement of the Cour de Cassation).
  2. ↑ The collective work status is quite restrictive, please make sure that it is actually established.

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