Est 501 to 562
| Est 501 to 562 | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Est 501 to 510 | |||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||
Est 501 to 562 was a class of 62 French 2-4-0 locomotives for express passenger service, built in 1878–1886 for the Chemins de fer de l'Est.
Construction history
[edit]The first series Est 501–510 was built 1878–1879 at the workshops of the Chemins de fer de l'Est in Épernay.[1] The general design of the frame was carried over from the earlier Crampton locomotives, but with an additional coupled axle replacing the second leading axle. The first few machines had a round-top firebox which protruded down between the two driving axles,[2] while the later machines of this series had a Belpaire firebox which extended over the second coupled axle.[3] The boiler tubes had a length of 3.5 m (11 ft 5+3⁄4 in) and the steam regulator was of the Crampton type with the steam pipes running down to the cylinders externally.[4] The Cylinders were placed horizontally on both sides between the double longerons of the frame with the connecting rod directly driving the second driving axle. The driving wheels had a diameter of 2,310 mm (7 ft 7 in).[4]
The second series, comprising Est 511–542, was built in 1881–1882[5] in two subseries at Cail (1881) and Wiener Neustadt (1882).[6] The diameter of the driving wheels was reduced to 2,110 mm (6 ft 11+1⁄8 in), and also the firebox was changed to one with a rounded top which also extended over the second coupled axle.[5] The reversing mechanism of the Gooch valve gear was rearranged.[2] Also the cylinder size was reduced to 430 mm × 610 mm (16+15⁄16 in × 24 in) on the machines Est 523-542.[5][2]
The third and last series, Est 543–562, was built 1884–1885.[2] The main differences compared to the preceding Est 523-542 series was the lengthening of the boiler and boiler tubes, which now had a length of 4.1 m (13 ft 5+3⁄8 in).[2] Also the cylinder size had been increased to 440 mm × 610 mm (17+5⁄16 in × 24 in).[5]
In 1888, two locomotives of the first series, Est 508 and 509, were fitted experimentally with dual drum Flaman boilers with a boiler pressure of 12 kg/cm2 (1.18 MPa; 171 psi).[5] Due to the increased weight the leading axle had been replaced by a two-axle outside-frame bogie. Although these machines apparently did not meet the expectation, they still remained in service until 1925.[5]
In order to increase the available traction, 48 locomotives of the series 511–562 had their driving wheels reduced from 2.11 m (6 ft 11+1⁄8 in) diameter down to 1.85 m (6 ft 7⁄8 in), which was sufficient to pull the local trains on the main and secondary lines. The locomotives were also renumbered to the range 2511–2562.[5]
The series Est 501–510 used a two-axle tender with a capacity of 10 m3 (350 cu ft) water and 2.5 t (5,510 lb) coal and weighing a total of 24 t (52,900 lb), while the series Est 543–562 used a two-axle tender with a capacity of 13 m3 (460 cu ft) water and 3 t (6,610 lb) coal and weighing a total of 29 t (63,900 lb).[5]
| Year | Qty. | Est No. | Manufacturer |
|---|---|---|---|
| 1878–1879 | 10 | 501–510 | Épernay Works[1][6] |
| 1881 | 12 | 511–522 | Société J. F. Cail & Cie[6] |
| 1882 | 20 | 523–542 | Wiener Neustadt[6] |
| 1884–1885 | 20 | 543–562 | Épernay Works[2] |
References
[edit]
- ^ a b Vilain (1980), pp. 52–56.
- ^ a b c d e f Demoulin (1898), pp. 72–75.
- ^ Deghilage (1879), pp. 93–96.
- ^ a b Vilain (1980), pp. 52–56, 98.
- ^ a b c d e f g h Vilain (1980), p. 53.
- ^ a b c d Deghilage (1882), pp. 241, 247–248.
Bibliography
[edit]- Vilain, Lucien-Maurice (1980). L'Évolution des locomotives à vapeur de la compagnie des chemins de fer de l'Est 1853-1938 (in French). éditions Pygmalion. ISBN 2-85704-081-4.
- Demoulin, Maurice (1898). Traité pratique de la machine locomotive (in French). Vol. 1. Baudry et Cie.
- Deghilage (2 August 1879). "Locomotives a grande vitesse de l'Exposition Universelle de 1878". Revue générale des chemins de fer (in French). 2, 2e Semestre. Paris: P. Vicq-Dunod: 81–108. OCLC 6536095.
- Deghilage (4 October 1882). "Note sur les locomotives construites pour les Chemins de fer français, De 1878 à 1881 - Première partie". Revue générale des chemins de fer (in French). 5, 2e Semestre. Paris: P. Vicq-Dunod: 237–265. OCLC 6536095.
 | This steam locomotive-related article is a stub. You can help Wikipedia by expanding it. |
 | This French railway-related article is a stub. You can help Wikipedia by expanding it. |