- London Hydraulic Power Company
The London Hydraulic Power Company was set up by an
Act of Parliamentin 1883 to install a hydraulic power networkof high- pressure cast ironwater mains under London. It was the successor to the Steam Wharf and Warehouse Company, founded in 1871 by Edward B Ellington. The network covered an area mostly north of the Thamesfrom Hyde Park in the west to Docklands in the east.
The system was used as a cleaner and more compact alternative to
steam engines, to power workshop machinery, lifts, cranes, theatremachinery, and the backup mechanism of Tower Bridge. It was also used to supply fire hydrants, mostly those inside buildings. The water, pumped straight from the Thames, was heated in winter to prevent freezing.
The pressure was maintained at a nominal 800 psi (about 5.5 MPa, or 54 bar) by five hydraulic power stations, originally driven by
coal-fired steam engines. These were at:
* Falcon Wharf Pumping Station near
Blackfriars Bridge(this was the first)
* Renforth Pump House in
Rotherhithe(opened in 1904), using the defunct Tower Subwayto carry pipes under the Thames
* City Road Basin on the
Regent's Canalin Islington
* Grosvenor Road.
Short-term storage was provided by
hydraulic accumulators, which were large vertical pistons loaded with heavy weights.
From about 1904, business began to decline as
electric powerbecame more popular. The company began to replace its steam engines with electric motors from 1923. At its peak, the network consisted of 180 miles (about 290 km) of pipes, and the total power output was about 7000 horsepower(5 MW).
The system closed in 1977, and the entire company was bought by
Mercury Communications(a subsidiary of Cable & Wireless), who used the pipes as telecommunicationsducts. Wapping Hydraulic Power Station, the last of the five to close, is now an arts centre and restaurant.
Liverpool Hydraulic Power Company
* [http://www.subbrit.org.uk/sb-sites/sites/h/hydraulic_power_in_london/ Hydraulic power in London] from Subterranea Britannica including photographs.
* [http://www.vauxhallsociety.org.uk/Hydraulic.html Hydraulic Power Company] from the Vauxhall Society website
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