Bingley Five Rise Locks

Bingley Five-Rise Locks is a staircase lock on the Leeds and Liverpool Canal at Bingley (grid reference SE107399). As the name implies, a boat passing through the lock is lifted or lowered in five stages.

The Five Rise Locks from below

Description

In effect the five-rise consists of five locks connected without intermediate "ponds": the lower gate of each chamber forms the upper gate of the chamber below. There are therefore five chambers, and six gates. As the Leeds Liverpool canal is a wide canal, the chambers are slightly more than 14 feet (4.3 m) wide, and each gate consists of two half-gates, "hinged" from opposite sides of the canal. Each half gate is slightly more than 7 feet (2.1 m) wide, so that the two halves close in a "V" shape (pointing "upstream"). Water pressure on the uphill side of the gate keeps it tightly closed until the water levels on either side are equal, when the gate can be opened and the boat moved to the next chamber (see canal locks for more information on how a lock is constructed and operated).

The five-rise is the steepest flight of locks in the UK, with a gradient of about 1:5 (a rise of 59 ft 2 in (18.03 m) over a distance of 320 ft (98 m)). The intermediate and bottom gates are the tallest in the country. Because of the complications of working a staircase lock, and because so many boaters (both first-time hirers and new owners) are inexperienced, a full-time lock keeper is employed, and the locks are padlocked out of hours. Barry Whitelock, the lock keeper, was based here for almost 30 years becoming closely associated with the flight. Barry was awarded an MBE in the 2007 New Year Honours List for "Services to Inland Waterways in the North" and retired in 2017 as the country’s longest serving lock keeper.[1][2] The Locks also have an overflow waterfall at the side, which water runs down when the lock is not open. When descending boat enters each lock chamber, the water level rises slightly and the excess overflows via a channel at the side of each lock which runs into the main overflow.[3]

The structure is Grade I listed.[4]

The locks from above with the Damart Mill in the distance.

History

The five-rise opened on 21 March 1774[5] and was a major feat of engineering at the time. When the locks and therefore the canal from Gargrave to Thackley[6] was opened in 1774, a crowd of 30,000 people turned out to celebrate. The first boat to use the locks took just 28 minutes. The first trip was described in the Leeds Intelligencer.[7] The smaller Bingley Three Rise Locks opened at the same time just a few hundred yards downstream.

Tourism

The staircase is a tourist attraction in the area. Boats that pass through often attract a crowd of gongoozlers.

Maintenance

The staircase underwent extensive restorative maintenance in 2004, and again in 2006 when the lock gates and paddles were replaced. As is expected with such a feat of engineering it requires a lot of maintenance and is often on British Waterways' list of winter stoppages for maintenance.

In January 2012, the locks were drained to allow the installation of new lock gates. The new gates are made of English green oak and, taken together with the balance beam, weigh over 5 tonnes.[8]

gollark: Why is it impossible?
gollark: Before I got the current osmarks.net server I actually used 4000 Arduinos duct-taped together.
gollark: Just break out your laptop and open up all the panels, and keep it going up and down so nobody can stop you.
gollark: Deploying `#![forbid(unsafe_code)]`.
gollark: Do NOT UnsafeCell.

See also

References
  1. "No. 58196". The London Gazette (Supplement). 30 December 2006. p. 24. Barry Whitelock. For services to Inland Waterways in the North.
  2. "Five Rise lock keeper". Canal & River Trust. 15 May 2017. Retrieved 3 April 2018. Barry Whitelock became a lock keeper at Five Rise Locks in 1978 and retired in 2017, making him the country’s longest serving lock keeper.
  3. "'Dream job' lock-keeper gets MBE". Yorkshire Post. Europe Intelligence Wire. 30 December 2006. Retrieved 25 September 2012.
  4. Historic England. "Grade I (1314303)". National Heritage List for England. Retrieved 31 July 2010.
  5. Leeds Intelligencer
  6. The Leeds & Liverpool Canal (Clarke)
  7. "Around Bingley - Five Rise Locks and the Canal". Bingley.org.uk. Archived from the original on 5 March 2014. Retrieved 25 September 2012.
  8. "Rare glimpse of drained 18th Century Bingley Five Rise Locks". BBC News Online. 30 January 2012. Retrieved 30 January 2012.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.