John B. Jervis
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John Bloomfield Jervis was an American civil engineer. America's leading consulting engineer of the antebellum era, Jervis designed and supervised the construction of five of America's earliest railro
Jervis's steam locomotive, Experiment, was the first locomotive with a truck, which guides the locomotive into curves while also supporting the smokebox
The High Bridge over the Harlem River, part of the Croton Aqueduct, in 1890
1401 John B. Jervis
4-2-0
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Under the Whyte notation for the classification of steam locomotives, 4-2-0 represents the wheel arrangement of four leading wheels on two axles, two powered driving wheels on one axle and no trailing
John B. Jervis
…renamed the Brother Jonathan), the first steam locomotive with a leading bogie, a four-wheel leading truck that guides the locomotive into curves. This 4-2-0 locomotive, which had two powered driving wheels on a rear axle underneath the locomotive's firebox, became known as the Jervis type. The Mohawk…
Hackensack and New York Railroad 4-2-0
Norris engine for the Birmingham and Bristol Railway
Crampton 4-2-0 built for the Chemin de fer de l’Est
Dutton road-rail tractor, a modified Yorkshire steam tractor, c. 1924