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The German steam locomotives of Palatine Class P 3.I were operated by the Palatinate Railway and were the first engines in Germany with a 4-4-2 (Atlantic) wheel arrangement. The two-cylinder saturated steam locomotives with inside cylinders had in addition to an inside bar frame a characteristic outer frame for the rear part of the locomotive, that partly covered the driving wheels. The valve gear was of the Joy type.

Palatine P 3.I DRG Class 14.1
P 3.I No. 119 von Neuffer
Type and origin Builder Krauss Build date 1898–1904[1] Total produced 12
Specifications Configuration: ​  • Whyte 4-4-2 Gauge 1,435 mm (4 ft 8+1⁄2 in) Leading dia. 950 mm (3 ft 1+1⁄2 in) Driver dia. 1,980 mm (6 ft 6 in) Trailing dia. 950 mm (3 ft 1+1⁄2 in) Length: ​  • Over beams 19,070 mm (62 ft 6+3⁄4 in) Axle load 15.0 t (14.8 long tons; 16.5 short tons) Adhesive weight 30.0 t (29.5 long tons; 33.1 short tons) Service weight 59.6 t (58.7 long tons; 65.7 short tons) Water cap. 16.0 m3 (3,500 imp gal; 4,200 US gal) Boiler pressure 13 kgf/cm2 (1.27 MPa; 185 lbf/in2) Heating surface:  • Firebox 2.81 m2 (30.2 sq ft)  • Evaporative 168.62 m2 (1,815.0 sq ft) Cylinders 2, later 4 Cylinder size 490 mm (19+5⁄16 in) Piston stroke 570 mm (22+7⁄16 in)
Performance figures Maximum speed 100 km/h (62 mph)
Career Numbers Pfalz: 93, 119, 221–230 DRG: 14 101–105 Retired 1926

In 1898 and 1899 Krauss initially built eleven locomotives; in 1904 a twelfth followed that was equipped with a Pielock superheater. Although the P 3s met their intended performance criteria, they were soon overtaxed by increasingly long trains.

The Palatinate Railway decided therefore on an unusual conversion: in 1913 the two-cylinder engine was converted into a four-cylinder compound engine by the addition of two outside cylinders, the inner ones becoming the high-pressure cylinders. However they did not achieve the higher performance required, just a lower fuel consumption of around 15%.

The Deutsche Reichsbahn took over five of these locomotives as DRG Class 14.1 with numbers 14 101 to 14 105, but by 1926 they were retired from service. Also grouped into Class 14.1 were the Bavarian S 2/5s.

The locomotives were equipped with tenders of the Bavarian Class 3 T 16.

See also

• Royal Bavarian State Railways
• Palatinate Railway
• List of Bavarian locomotives and railbuses
• List of Palatine locomotives and railbuses

References

Literature

• Mühl, Albert (1982). Die Pfalzbahn: Geschichte, Betrieb und Fahrzeuge der pfälzischen Eisenbahnen. Theiss. 252 pp.
• Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1976). Dampflokomotiven deutscher Eisenbahnen, Baureihe 01–39 (EFA 1.1) (in German) (3rd ed.). Düsseldorf: Alba Buchverlag. pp. 94–96. ISBN 3-87094-081-6.

На других языках

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[de] Pfälzische P 3.I

Die Dampflokomotiven der Gattung P 3.1 der Pfälzischen Eisenbahn waren die ersten Maschinen mit der Achsfolge 2'B1' (Atlantic) in Deutschland. Die Zweizylinder-Nassdampflokomotiven mit innenliegenden Zylindern hatten zusätzlich zum inneren Barrenrahmen einen auffälligen Außenrahmen im hinteren Teil der Lokomotive, der die Treibräder teilweise verdeckte. Die Steuerung entsprach der Bauart Joy.

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- [en] Palatine P 3.I

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