Matches in DBpedia 2016-04 for { <http://wikidata.dbpedia.org/resource/Q5514927> ?p ?o }
- Q5514927 subject Q8182005.
- Q5514927 subject Q8210028.
- Q5514927 subject Q8499412.
- Q5514927 subject Q8626985.
- Q5514927 subject Q8810064.
- Q5514927 abstract "The Dean Single, 3031 Class, or Achilles Class was a type of steam locomotive built by the British Great Western Railway between 1891 and 1899. They were designed by William Dean for passenger work. The first 30 members of the class were built as 2-2-2s of the 3001 Class.The first eight members of the class (numbers 3021-3028, built April–August 1891) were built as convertible 7 ft 1⁄4 in (2,140 mm) broad gauge 2-2-2 locomotives, being converted to standard gauge in mid-1892, at the end of broad gauge running on the Great Western Railway. A further 22 were built in late 1891 and early 1892, this time as standard gauge engines.Although the 4 ft 8 1⁄2 in (1,435 mm) 3001 class were fitted with larger boilers than earlier GWR 2-2-2 classes, the diameter of the boiler was constrained by its position between the 7 ft 8 in (2.337 m) driving wheels. Thus boiler capacity could only be increased by making the boiler longer, not wider, bringing the smokebox and cylinders in front of the leading axle. The extra weight of the larger boilers was borne by the leading wheels, making the locomotives unstable, particularly at speed. On 16 September 1893 No. 3021 Wigmore Castle, hauling an express train, was derailed in Box Tunnel when the front axle broke. The cause of the accident was thought to be excessive weight being carried on the front axle, so it was decided to replace the leading pair of wheels in the 3001 class with a bogie.In the 3001 class the steam chest was located underneath the cylinders, and contained two slide valves. The inverted placement of the valves allowed them to drop away from the face of the steam ports when steam was shut off, thus reducing wear. The steam chest and valves lay above the front carrying axle, and there was sufficient clearance to allow the steam chest cover to be removed over the axle for maintenance.Replacing the axle with a bogie of conventional design would have obstructed access to the port faces. Dean instead used a suspension bogie, in which the weight of the locomotive was transferred upwards to the bogie by four bolts mounted on the inside frames. The centre pin of the bogie rotated in a spring-centred block mounted beneath the steam chest on cross beams. This setup gave sufficient clearance so that, when the bolts were undone, the front end of the locomotive raised, and the bogie was run out from underneath, the steam chest cover could be removed without hindrance.No. 3021 was rebuilt as a 4-2-2 in March 1894. Between June and December 1894 the 28 remaining locomotives of the 3001 class were rebuilt. The first of a further 50 new bogie singles was also built in March 1894, the last of the class being outshopped in March 1899. These new locomotives differed from the rebuilds in having their cylinder diameter reduced from 20 to 19 inches (508 to 483 mm), and the springs for the trailing wheels located above the footplate and outside the cab, necessitating a reduced width for the latter. The rebuilds subsequently had their cylinders lined down to 19 inches (483 mm). The entire class, as they required it, had their driving wheels fitted with thicker tyres from 1898 onwards, increasing the wheel diameter by zero and a half inch (12.7 mm) to 7 ft 8 1⁄2 in (2.350 m).In 1900, George Jackson Churchward replaced the boiler on number 3027 Worcester with a parallel Standard 2 boiler. Twelve further engines were similarly converted in 1905 and 1906.Despite the locomotives' speed, the 4-2-2 design was soon found to be outdated and unsuitable for more modern operation. A proposal to improve their performance by fitting them with long-travel valves was found to be impracticable; the existing valves were directly driven from eccentrics mounted on the driving axle, and there was insufficient clearance to fit larger eccentrics. Churchward considered rebuilding the class as Armstrong Class 4-4-0s with7 ft 2 in (2.184 m) coupled wheels. The cylinder centre line would then be 3.5 in (89 mm) above the driving centre, due to the 7 in (178 mm) difference in driving wheel diameter. This scheme was not carried through because the connecting rods would not clear the lower slide bar, and the valve gear would be out of alignment. An alternative proposal to drop the locomotive 3.5 in (89 mm), and raise the buffer beam and dragbox, was also rejected on the grounds of cost. The class were gradually withdrawn between 1908 and 1915, with the last survivor, no. 3074 Princess Helena, being withdrawn in December 1916.".
- Q5514927 builder Q843251.
- Q5514927 designer Q8007711.
- Q5514927 thumbnail GWR_Dean_single_4-2-2_3050_Royal_Sovereign_(Howden,_Boys_Book_of_Locomotives,_1907).jpg?width=300.
- Q5514927 wikiPageExternalLink uk-england-wiltshire-20376871.
- Q5514927 wikiPageExternalLink dean_3001det.htm.
- Q5514927 wikiPageExternalLink 4728307093.
- Q5514927 wikiPageWikiLink Q1019180.
- Q5514927 wikiPageWikiLink Q1050690.
- Q5514927 wikiPageWikiLink Q1056493.
- Q5514927 wikiPageWikiLink Q11005.
- Q5514927 wikiPageWikiLink Q11007.
- Q5514927 wikiPageWikiLink Q11427.
- Q5514927 wikiPageWikiLink Q1147963.
- Q5514927 wikiPageWikiLink Q116728.
- Q5514927 wikiPageWikiLink Q12546.
- Q5514927 wikiPageWikiLink Q128176.
- Q5514927 wikiPageWikiLink Q129247.
- Q5514927 wikiPageWikiLink Q131691.
- Q5514927 wikiPageWikiLink Q134154.
- Q5514927 wikiPageWikiLink Q1370.
- Q5514927 wikiPageWikiLink Q138396.
- Q5514927 wikiPageWikiLink Q1471161.
- Q5514927 wikiPageWikiLink Q1487670.
- Q5514927 wikiPageWikiLink Q1487675.
- Q5514927 wikiPageWikiLink Q1487681.
- Q5514927 wikiPageWikiLink Q152260.
- Q5514927 wikiPageWikiLink Q1540110.
- Q5514927 wikiPageWikiLink Q1541225.
- Q5514927 wikiPageWikiLink Q1564617.
- Q5514927 wikiPageWikiLink Q1565048.
- Q5514927 wikiPageWikiLink Q1573604.
- Q5514927 wikiPageWikiLink Q158140.
- Q5514927 wikiPageWikiLink Q158143.
- Q5514927 wikiPageWikiLink Q160539.
- Q5514927 wikiPageWikiLink Q160541.
- Q5514927 wikiPageWikiLink Q160558.
- Q5514927 wikiPageWikiLink Q16147991.
- Q5514927 wikiPageWikiLink Q164484.
- Q5514927 wikiPageWikiLink Q1646181.
- Q5514927 wikiPageWikiLink Q17016534.
- Q5514927 wikiPageWikiLink Q17097975.
- Q5514927 wikiPageWikiLink Q171043.
- Q5514927 wikiPageWikiLink Q171416.
- Q5514927 wikiPageWikiLink Q1754707.
- Q5514927 wikiPageWikiLink Q179684.
- Q5514927 wikiPageWikiLink Q180729.
- Q5514927 wikiPageWikiLink Q1807761.
- Q5514927 wikiPageWikiLink Q182531.
- Q5514927 wikiPageWikiLink Q184854.
- Q5514927 wikiPageWikiLink Q186309.
- Q5514927 wikiPageWikiLink Q1869930.
- Q5514927 wikiPageWikiLink Q189144.
- Q5514927 wikiPageWikiLink Q189872.
- Q5514927 wikiPageWikiLink Q190323.
- Q5514927 wikiPageWikiLink Q193404.
- Q5514927 wikiPageWikiLink Q19686.
- Q5514927 wikiPageWikiLink Q20875.
- Q5514927 wikiPageWikiLink Q217421.
- Q5514927 wikiPageWikiLink Q222595.
- Q5514927 wikiPageWikiLink Q23129.
- Q5514927 wikiPageWikiLink Q23135.
- Q5514927 wikiPageWikiLink Q23156.
- Q5514927 wikiPageWikiLink Q23169.
- Q5514927 wikiPageWikiLink Q23220.
- Q5514927 wikiPageWikiLink Q233516.
- Q5514927 wikiPageWikiLink Q233997.
- Q5514927 wikiPageWikiLink Q23666.
- Q5514927 wikiPageWikiLink Q25.
- Q5514927 wikiPageWikiLink Q2536590.
- Q5514927 wikiPageWikiLink Q254106.
- Q5514927 wikiPageWikiLink Q269412.
- Q5514927 wikiPageWikiLink Q2734958.
- Q5514927 wikiPageWikiLink Q2891439.
- Q5514927 wikiPageWikiLink Q2901670.
- Q5514927 wikiPageWikiLink Q2918952.
- Q5514927 wikiPageWikiLink Q2987365.
- Q5514927 wikiPageWikiLink Q3098091.
- Q5514927 wikiPageWikiLink Q310201.
- Q5514927 wikiPageWikiLink Q3313263.
- Q5514927 wikiPageWikiLink Q3316148.
- Q5514927 wikiPageWikiLink Q33741.
- Q5514927 wikiPageWikiLink Q3400981.
- Q5514927 wikiPageWikiLink Q34726.
- Q5514927 wikiPageWikiLink Q35565.
- Q5514927 wikiPageWikiLink Q36517.
- Q5514927 wikiPageWikiLink Q38571.
- Q5514927 wikiPageWikiLink Q389665.
- Q5514927 wikiPageWikiLink Q39018.
- Q5514927 wikiPageWikiLink Q3978805.
- Q5514927 wikiPageWikiLink Q39861.
- Q5514927 wikiPageWikiLink Q40949.
- Q5514927 wikiPageWikiLink Q41746.
- Q5514927 wikiPageWikiLink Q42646.
- Q5514927 wikiPageWikiLink Q43292.