Locks on the Ellesmere and Chester Canal, 1838.
© Science Museum / Science & Society Picture Library
Diagrams in plan and section showing a cast iron lock, gates and other construction details. Civil engineer Thomas Telford (1757-1834) oversaw the design and construction of the Ellesmere Canal which ran from North Wales to South Cheshire. It linked the ironworks and collieries of Wrexham, via the town of Ellesmere, with Chester. Telford incorporated the existing Chester Canal and the River Mersey into the system. Illustration from Telford's 'Atlas to the Life of Thomas Telford, civil engineer', published in London in 1838.