401:× 510 mm) inside cylinders and 6-foot-0-inch-diameter (1.83 m) driving wheels. Gray's so-called "mixed" frame had an inside frame for the cylinders and driving wheels, with inside bearings, and an outside frame for the 4-foot-0-inch-diameter (1.22 m) leading and trailing wheels, using outside bearings. The inside frame stopped at the firebox, so that the latter was as wide as the wheels would allow. By this means he minimized the overhang at each end.
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344:, who was a famous Swedish opera singer of the period. The general design proved to be so successful that the manufacturers adopted it for use on other railways, and it became the first mass-produced locomotive type. The "Jenny Lind" type was also widely copied during the late 1840s and 1850s, and into the 1860s.
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After strengthening of various members, the engine was three tons heavier than expected. However, it steamed freely and was economical on fuel. It was to this that its success was attributed, along with the increase in boiler pressure that had become possible over the years. However, credit must be
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As is usual in engineering, there were a number of trade-offs to be made in steam locomotive design. There is a limit to the rate that steam can be delivered to the pistons; therefore, higher speed was obtained with larger driving wheels. These, however, limited the size of the boiler, since it
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Joy and Fenton settled on a medium-sized boiler, 800 sq ft (74 m) heated surface area, with a pressure of 120 lbf/in (827 kPa) and concentrated on its steaming abilities. In this, James Fenton had particular expertise. The engine had 15-by-20-inch (380 mm
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needed to fit between them, particularly with the preoccupation of the time with a lower centre of gravity. The tendency had been to lengthen the boilers with supporting wheels front and rear. Thus, passenger engines, like the so-called
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The new class proved to be so successful that the design was used by Wilson & Co. as their standard design and more than seventy examples were built for various railways, including twenty-four for the
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wheel arrangement. However, too long a boiler also created instability. Some locomotives improved adhesion for heavier loads by coupling pairs of driving wheels, but there was a tendency for the
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for the railway so that ten further examples could be built. However, before he had completed the task, Gray had been dismissed from his post of
Locomotive Superintendent, and his successor
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given to Joy's suspension arrangements that made it extremely smooth-running and stable. The name "Jenny Lind" was given to the first one delivered to the LB&SCR.
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coupling rods to break especially at speed. Thus, four- and six-coupled locomotives were used for freight trains.
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Some Links in the
Evolution of the Locomotive: the particulars extracted from the Diaries of the Late David Joy;
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Technical drawings, Patent Office
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Historical photo, mid-19th century, “Brighton Engine men with
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did not favour Gray's complicated horse-leg motion. As a result it was left to Joy and
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Historical photo “OW&WR ‘Jenny Lind’ Class 2-2-2 ‘Will
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Locomotives of the London
Brighton and South Coast Railway. Part 1
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This article is about the steam locomotive. For other uses, see
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15 in × 20 in (381 mm × 508 mm)
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Other manufacturers and railways also adopted the type.
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573:The Brighton Branch of A.S.L.E.F.:
526:The pictorial history of railways,
493:British Steam Locomotive Builders.
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197:6 ft 0 in (1.829 m)
186:4 ft 0 in (1.219 m)
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481:Archived on "Steam Index" website
324:was the first of a class of ten
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223:800 sq ft (74 m)
278:6,375 lbf (28.36 kN)
215:120 lbf/in (827 kPa)
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495:London: Guild Publishing
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16:British steam locomotive
387:Long Boiler locomotives
369:locomotive designed by
505:Bradley, D.L. (1971).
475:* Sekon, G.A., (1908)
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328:built in 1847 for the
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587:West Midland Railway
575:The Early Struggles
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423:John Chester Craven
268:Performance figures
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563:Historical photos
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613:Jenny Lind
597:Categories
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342:Jenny Lind
322:Jenny Lind
310:Jenny Lind
249:Valve gear
89:Build date
57:Power type
31:Jenny Lind
452:Ian Allan
371:John Gray
353:David Joy
296:Operators
229:Cylinders
69:David Joy
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65:Designer
466:p.38-9.
348:History
160:⁄
79:Builder
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291:Career
192:Driver
140:1A1 n2
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391:4-2-0
366:2-2-2
338:Leeds
146:Gauge
127:2-2-2
121:Whyte
60:Steam
456:ISBN
194:dia.
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254:Joy
136:UIC
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