| Locomotive Seguin |
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Seguin locomotive replica |
| Type and origin |
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| Power type | Steam |
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| Builder | Marc Seguin |
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| Total produced | 12 |
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| Specifications |
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Configuration:
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| • Whyte | 0-4-0 |
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| Wheel diameter | 1,150 mm (3 ft 9 in) |
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| Loco weight | 4.5 t (4.4 long tons; 5.0 short tons) |
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| Boiler pressure | 0.4 MPa (58 psi) |
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| Cylinders | 2, vertical |
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| Performance figures |
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| Maximum speed | 30 km/h (19 mph) |
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Locomotive Seguin is the first steam locomotive to use a tubular boiler, a groundbreaking invention that multiplied the developed power by sixfold. Boiling is achieved by circulating the combustion gases in multiple 'fire tubes' passing through the heating body, significantly increasing the thermal exchange surface and efficiency. The boiler produced 1,200 kg (2,600 lb) of steam per hour instead of 300 kg (660 lb), enabling the locomotive to reach a speed of 30 km/h (19 mph) instead of 16 km/h (9.9 mph). Marc Seguin patented this invention on December 12, 1827, and it was initially applied to boats navigating the Rhône River. The Seguin locomotive was built in twelve iterations at the Perrache workshops between 1829 and 1835.
