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Tees Cottage Pumping Station
Tees Cottage Pumping Station is a Victorian pumping station complex at Broken Scar on the A67 near Low Coniscliffe just west of Darlington. The site dates from 1849, and was built to provide drinking water for Darlington and the surrounding area. It is a Scheduled Ancient Monument housing two completely original pumping engines in fully working order: a 1904 beam engine, built by Teasdale Brothers of Darlington, which is still steamed using its original 1902 Lancashire boilers; and a rare 1914 two-cylinder gas internal-combustion engine, the largest such engine surviving in Europe. Both engines can be seen in operation on certain weekends through the year, using their original pumps to pump water from the River Tees, just as they always have done.〔http://www.communigate.co.uk/ne/teescottagepumpingstation/page2.phtml〕
In May 2014 it was announced without warning that public access to the site was immediately to be withdrawn (including for the volunteer workforce) by its owner Northumbrian Water, due to 'serious structural and safety concerns'. The owners pledged to work with volunteers to restore access as soon as possible.〔(Darlington & Stockton Times 23 May 2014. )〕 Following a comprehensive programme of work, the site is due to reopen, with engines in use, in September 2015.
== Beam engine ==
The 1904 engine was one of the very last waterworks beam engines ever built, and as such may be seen as representing the pinnacle of beam engine pumping development. It is a rotative, two-cylinder Woolf compound engine, designed by Glenfield and Kennedy of Kilmarnock and built by Teasdale Bros, under T&C Hawksley, Civil Engineers, London. The beam is just over long, weighing 25 tons; the flywheel is in diameter, and the high- and low-pressure cylinders measure 18" and 29" respectively (46 cm and 74 cm). It is housed in a building erected for an earlier beam engine in 1849. The engine ran almost continuously from 1904 to 1926, when new electric pumps were commissioned; thereafter it remained on operational standby until the mid-1950s, and continued to be run one day each year, on the order of the Borough Engineer, until at least 1968.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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