Nord 0-4-0 Locomotives in France

Class 59 (Locobase 7330)

Data from Titre Exposition universelle internationale de 1878 a Paris. Rapports du jury internationale..Volume Groupe VI - Classe 64. Rapport sur le materiel des chemins de fer. p. 50 (cnum.cnam.fr/CGI/fpage.cgi?8XAE277-11.1/54/100/312/0/0 (accessed 1 September 2005).

Locobase isn't sure how much smaller a steam locomotive can get than this tank engine delivered to the Nord. He cannot say much about it because the jury report says little. But Locobase notes the very large percentage of heating surface (more than 40%) given to the firebox and the relatively small number (56) of relatively large fire tubes (55 mm exterior diameter) in a boiler described as a vertical cylinder.

Given that all the data shown is correct, Locobase is left to wonder whether the reported service use ("gare" or terminal switching) was even possible for a locomotive of such miniature dimensions for standard-gauge.

Class Engerth (Locobase 595)

Data from Gustav Reder (Michael Reynolds, trans), The World of Steam Locomotives (New York: Putnam, 1974). supplemented and revised by August Perdonnet, Traite Elementaird des Chemins de Fer, Tome Second (Paris: Garnier Freres, , 1860), pp. 577-583, See also the comments at Charles Henri Frantois Couche (J Edwards Wilson, translator), Permanent way, rolling stock and technical working of railways, Volume 2 (London: Dulau et Co, 1878), pp. 465-471. See also Albert Jacquet, "'Engerth'" Locomotives on French and Belgian Railways", Locomotive Magazine, Volume XXVIII [28] (15 April 1922), pp. 104-106. Series 401-436 encompassed engines built by Kessler in Esslingen (401-406), as well as those supplied by Cave (407-412 in 1856, 413-426 in 1856 , and Nord's La Chapelle works (427-436 in 1857.)

Engerth-type locomotives for the French Nord that were designed for passenger trains, although their service use involved the express fish trains to Paris. These engines had taller driving wheels than the Austrian Southern Engerths and smaller cylinder dimensions, which resulted in a lower tractive effort. Moreover, the engines had two driving axles rather than the three of the Austrian Southern Engerths and had both pistons and valves inside the frame.

A third of the class was modified by separating the tender, leaving the engine as an 0-4-2; see Locobase 20898.

NB: Perdonnet's data for tube heating surface used the internal tube diameter, which yielded 117.0 sq m (1,259 sq ft) and evaporative heatng surface of 125.45 sq m (1,350 sq ft). Locobase uses the external diameter that appeared in the same table to simplify comparison with Anglo-American designs.