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- Q1101236 subject Q7035246.
- Q1101236 subject Q7035269.
- Q1101236 subject Q7145684.
- Q1101236 subject Q8315274.
- Q1101236 subject Q8416077.
- Q1101236 subject Q9672243.
- Q1101236 abstract "John Birkinshaw was a 19th-century railway engineer from Bedlington, Northumberland noted for his invention of wrought iron rails in 1820. Up to this point, rail systems had used either wooden rails, which were totally incapable of supporting steam engines, or cast iron rails typically only 3 feet in length. These cast iron rails, developed by William Jessop and others, only allowed very low speeds and broke easily and although steam locomotives had been tested as early as 1804 by Richard Trevithick, these experiments had not been economically successful as the rails frequently broke."John Birkinshaw's 1820 patent for rolling wrought-iron rails in 15ft lengths was a vital breakthrough for the infant railway system. Wrought iron was able to withstand the moving load of a locomotive and train unlike cast iron, used for rails until then, which was brittle and fractured all too easily."Birkinshaw's wrought iron rails were taken up by George Stephenson in 1821 for the proposed Stockton and Darlington Railway, despite the fact that Stephenson already held the rights to the best cast iron product and it was this railway that effectively launched the rail era.".
- Q1101236 thumbnail Tracts_vol_25_p79_B_John_Birkinshaws_patent_for_Malleable_Iron_Rails_1821_plate_2_of_2.jpg?width=300.
- Q1101236 wikiPageWikiLink Q1301181.
- Q1101236 wikiPageWikiLink Q133614.
- Q1101236 wikiPageWikiLink Q2094334.
- Q1101236 wikiPageWikiLink Q217157.
- Q1101236 wikiPageWikiLink Q2249694.
- Q1101236 wikiPageWikiLink Q23079.
- Q1101236 wikiPageWikiLink Q3565868.
- Q1101236 wikiPageWikiLink Q3700357.
- Q1101236 wikiPageWikiLink Q375044.
- Q1101236 wikiPageWikiLink Q4879297.
- Q1101236 wikiPageWikiLink Q6744919.
- Q1101236 wikiPageWikiLink Q7035246.
- Q1101236 wikiPageWikiLink Q7035269.
- Q1101236 wikiPageWikiLink Q7145684.
- Q1101236 wikiPageWikiLink Q8315274.
- Q1101236 wikiPageWikiLink Q8416077.
- Q1101236 wikiPageWikiLink Q841894.
- Q1101236 wikiPageWikiLink Q860451.
- Q1101236 wikiPageWikiLink Q9672243.
- Q1101236 comment "John Birkinshaw was a 19th-century railway engineer from Bedlington, Northumberland noted for his invention of wrought iron rails in 1820. Up to this point, rail systems had used either wooden rails, which were totally incapable of supporting steam engines, or cast iron rails typically only 3 feet in length.".
- Q1101236 label "John Birkinshaw".
- Q1101236 depiction Tracts_vol_25_p79_B_John_Birkinshaws_patent_for_Malleable_Iron_Rails_1821_plate_2_of_2.jpg.