31 plaques with a category of Science_and_Engineering

80B Cheapside, London EC2V 6EE The Great Conduit(Science and Engineering)(Photos Taken: 25-Jun-2015)Link

St Katharine's Way, near Tower Bridge, London E1W 1LAHydraulic Power(Science and Engineering)(Photos Taken: 07-Mar-2021)Link
Plaque Wording: Hydraulic Power Dockland's Lifeblood
History
With the advent of the industrial revolution, the exports and imports of Victorian Britain caused the rapid early nineteenth century growth of the London docklands. Muscle and then steam provided the power to do everything from opening the lock gates to loading and unloading the vast warehouses flanking both banks of the Thames. However, fire was such a great risk that the insurance companies insisted on an alternative to steam. This problem was solved largely by the hydraulic inventions of Lord Armstrong of Newcastle, amongst which was the 'jigger' preserved here, which in this case was built by the Hydraulic Engineering Co. Ltd. of Chester in 1890. Hydraulic power was the lifeblood of the docklands.
Mechanics
Widely distributed and easily controllable high-pressure water was fed into the large cylinder. This pushed the piston up, forcing the sheaves apart such that 10cm (4") of silent piston movement gave 80cm (32") of chain movement over the wall crane to unload lighters or barges in the river below. For loading boats out of the warehouse, water was exhausted from the cylinder so that the weight of the piston and load descended by gravity. Two small jiggers control slew, the horizontal semi-rotation of the crane for reaching different cargo positions and swinging the loads into the warehouse doors on each floor served by the same crane. The jigger and crane could be controlled from any floor via a reach rod running up through the building.
The refurbishment of the jigger is part of a series of improvement projects by Taylor Woodrow Property Co. Ltd., owners of St Katharine Docks, with contributory funding from the Government Office for London Single Regeneration Budget Challenge Fund through an award by the Pool of London Partnership. It can be seen going through its cycle by pressing the button once.

Puerta del Sol, 28013 Madrid, SpainKilometre Zero(Science and Engineering)(Photos Taken: 03-Apr-2016)Link
Plaque Wording: Km.0
Origin of the Radial Roads

335 Strand Underpass, London WC2 R 1HAMarconi House(Science and Engineering)(Photos Taken: 09-Mar-2016)Link

Coney Hall Recreation Ground, Church Drive, West Wickham BR4 9JJPrime meridian(Science and Engineering)(Photos Taken: 29-Jul-2019)Link

Kew Bridge Steam Museum, Green Dragon Lane, Brentford TW8Pumping Engines(Science and Engineering)(Photos Taken: 18-Mar-2016)Link

299 Oxford Street, London W1C 2DZRoyal College of Chemistry(Science and Engineering)(Photos Taken: 14-May-2018)Link

Coronet Street, London N1 6HDShoreditch Refuse Destructor(Science and Engineering)(Photos Taken: 22-Mar-2016)Link

Victory Place, London SE17 Maule and Nicholson Simpson(Science and Engineering)(Photos Taken: 09-Apr-2016)Link

Thames Barrier Learning Centre, 1 Unity Way, Woolwich, London SE18 5NJThames Barrier(Science and Engineering)(Photos Taken: 28-Nov-2016)Link

near 2 Love Lane, London EC2V 7JQAldermanbury conduit(Science and Engineering)(Photos Taken: 29-Jun-2017)Link

Kew Bridge Steam Museum, Green Dragon Lane, Brentford TW8Bull Engine(Science and Engineering)(Photos Taken: 18-Mar-2016)Link

in Gracechurch Street, 59-60 Cornhill, London EC3V 3PDCornhill Standard Conduit(Science and Engineering)(Photos Taken: 18-Feb-2020)Link

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