Misplaced Pages

#99900

21-538: Jubilee Class may refer to: LNWR Jubilee Class , 4-4-0 steam locomotives built between 1897 and 1900 LMS Jubilee Class , 4-6-0 steam locomotives built between 1934 and 1936 Jubilee-class ocean liner , class of five ocean liners built for the White Star Line for their Australian service between 1899 and 1901. Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with

42-408: A compromise position, ideal for neither, and so gave an uneven power distribution between high and low. Their running was thus not as free-running as it might have been, which Webb would address in his later designs. These were also Webb's first designs with a leading bogie rather than a pony truck, although this has also been described as a "double radial truck". The truck pivots geometrically at

63-428: A failure and Whale commenced the programme of converting some of these to simple-expansion locomotives, and replacing others. In 1904 he introduced the 4-4-0 Precursor class , an entirely new design which was in production within nine months of Whale's appointment; by June 1906, there were 110 in service. The Precursors were able to keep time when handling greater loads than their predecessors. They were followed by

84-432: A point behind its rear axle, although there is no single mechanical pivot point. This motion is controlled instead, like Webb's earlier single radial truck, by curved radial slides, with a radius of curvature at the centre of the truck of 10 ft 9 in (3.28 m). Another novel feature was that both locomotives were fitted with double chimneys . The smokebox was partitioned internally into upper and lower halves,

105-679: A result, George Whale rebuilt these as two-cylinder simple locomotives of the Renown Class , starting with 1918 Renown in 1908. Rebuilt engines retained their numbers. Rebuilding continued so that at the grouping of 1923, only 9 Jubilees remained, being 1903/4/8/11/12/15/23/27/29. 1908 Royal George was withdrawn in January 1923, but the remaining eight were allocated the LMS numbers 5110–5117, in sequence. Two, 1904 Rob Roy and 1923 Agamemnon were withdrawn 1923, without receiving new numbers. The LMS rebuilt

126-684: A year after Whale had succeeded Webb. Whale began rebuilding the Webb 0-8-0s in August 1904, and the alterations took several forms. The first to appear were converted from Class B, which Whale considered to have an excessive front overhang: the principal change was the addition of a pony truck, making a 2-8-0; they remained as four-cylinder compounds, and between August 1904 and October 1908, 36 locomotives were converted. 26 of these retained their original boilers and were later designated Class E ; ten of those converted from May 1906 were provided with larger boilers (of

147-554: The Prince of Wales class . Webb had built 282 freight locomotives of the 0-8-0 wheel arrangement. All except the first one were compounds, which were of two types: there were 111 with two high-pressure cylinders outside the frames and a single low-pressure cylinder between the frames, which were known as Class A from 1911; and there were 170 with two outside high-pressure cylinders and two inside low-pressure cylinders, which were later known as Class B . Production ended in August 1904, over

168-570: The 4-6-0 Experiment class , and these two formed the basis for several subsequent LNWR locomotive classes. Whale introduced four new classes of locomotive; a fifth design was ordered by Whale but not delivered until after his retirement. The Precursor class was developed by C.J. Bowen Cooke into the George the Fifth and Queen Mary classes , whilst the Experiment class was developed by Bowen Cooke into

189-681: The LNWR Locomotive Superintendent , gave twelve months notice of retirement to the LNWR Board in November 1902. On 22 April 1903, the Board announced that Whale had been chosen to succeed Webb, who was to retire at the end of July 1903. Webb's health was failing, and Whale soon took up some of his duties, and began signing official documents on 25 May; by 30 May, Webb was too ill to work. Webb's compound locomotives were generally considered

210-451: The LNWR Board decided to concentrate locomotive construction and repair at Crewe Works under John Ramsbottom , Whale was one of around 400 workers transferred from Wolverton to Crewe. In 1865 he entered the drawing office at Crewe Works, and in 1867 joined the LNWR running department under J. Rigg. In 1898 he was made responsible for the running of all LNWR locomotives. Francis William Webb ,

231-430: The double chimney, but that the simple locomotive was improved by it. The double chimney was re-fitted to Jubilee , but the production locomotives were built as compounds without it. After around a year's running, the simple had run for 33,517 miles, with an average coal consumption of 40.3 pounds per mile and the compound (starting slightly later) for 23,503 miles with a consumption of 38.1 pounds per mile. The compound

SECTION 10

#1732859370100

252-737: The former low-pressure inside cylinders were retained. Large ( Experiment class) boilers were fitted, and these were later designated Class G . Conversions to Class G continued until June 1917, by which time 32 had been rebuilt; a further 60 to this design were built new between January and September 1910. Whale's retirement was announced at the end of 1908, and on 1 March 1909, C.J. Bowen Cooke became Chief Mechanical Engineer. Whale died at Hove , Sussex on 7 March 1910, aged 67. Bowen Cooke named two of his 4-4-0 Queen Mary class locomotives after his predecessors: no. 238 F.W. Webb and no. 896 George Whale both entered service in October 1910. The latter

273-464: The lower section exhausting through the front chimney and the upper tubes through the rear chimney. The blastpipes were fed separately, the front chimney from the left cylinders and the rear from the right. After some time in service, the two chimneys were replaced with a single chimney on an undivided smokebox and their performance and fuel consumption measured again. It was found that the compound locomotive had identical performance both with and without

294-481: The original Webb 0-8-0, no. 2524 (which had never been a compound) was also given a large boiler and joined Class D. From March 1909 until September 1912, the last 34 conversions from Class A again retained their original boilers, but the new cylinders were of 18 + 1 ⁄ 2 inches (470 mm) diameter; they were later designated Class C1 . From November 1906, rebuilding of Class B as 0-8-0 simples began. The outside high-pressure cylinders were removed, whilst

315-588: The remaining six into Renowns in 1924, making the class extinct (Their subsequent history is discussed at LNWR Renown Class ). A successor to this class, the Alfred the Great class , retained the 4-cylinder compound design but used two sets of valvegear, both Joy, allowing the LP cutoff to be controlled independently. George Whale In 1858 he entered the LNWR's Wolverton Works under James Edward McConnell , and when in 1862

336-523: The title Jubilee Class . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Jubilee_Class&oldid=852430213 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages LNWR Jubilee Class The London and North Western Railway (LNWR) Jubilee Class

357-875: The type used on the Experiment class) and were later designated Class F . Two of those initially converted to Class E were later given the larger boiler, and joined Class F. The next conversions were from Class A, and were rebuilt as simples, retaining the 0-8-0 wheel arrangement: two inside cylinders were fitted in place of the original centre cylinder, and the outside cylinders were removed. Between November 1904 and March 1906, 15 locomotives were converted, using cylinders of 19 + 1 ⁄ 2 inches (500 mm) diameter; these retained their original boilers and were later designated Class C . Between March 1906 and March 1909, 62 locomotives were converted, these were also given 19 + 1 ⁄ 2 -inch (500 mm) cylinders but were provided with larger ( Experiment class) boilers and were later designated Class D . In December 1906

378-495: Was a 4-cylinder simple locomotive with 15 in × 24 in (381 mm × 610 mm) cylinders. The second, No. 1502 Black Prince , was not Webb's first compound, but was his first 4-cylinder compound and the first in the UK. The outside high-pressure cylinders were the same as Iron Duke ' s, the inside low-pressure cylinders were 19 + 1 ⁄ 2  in × 24 in (495 mm × 610 mm). There

399-500: Was a class of 4-4-0 4-cylinder compound locomotives by F.W. Webb . A total of forty were built from 1897–1900. Slightly unusually for the LNWR, the class received a number series, this being 1901–1940. All were named, mostly after Royal Navy battleships. The first two of this class were prototypes, built to different designs to permit a comparison. The first, No. 1501 the Iron Duke (later re-named Diamond Jubilee and then Jubilee ),

420-453: Was no simpling valve or other means for starting, and so when starting they just operated as small 2-cylinder simples. The Joy valve gear was shared between high and low pressure, with a rocking lever to the high-pressure valves. The inside cylinders were angled above the outside cylinders and although this could have been solved by cranking the rocking levers, this gave an uneven drive to the valves; valve-setting between both of them had to be

441-493: Was thus cheaper by 2.2 pounds per mile, or 5%. The ratio between LP and HP cylinders was 1.69, lower than that considered optimal. Webb's 3-cylinder compounds had used the more usual figure of 2. To improve this to 1.87, Webb had decided to increase the size of the LP cylinders to 20 + 1 ⁄ 2  in × 24 in (521 mm × 610 mm), and this was applied to the production locomotives. As with other Webb compounds, they were mechanically unreliable. As

SECTION 20

#1732859370100
#99900