Valve Collection

Two Drawings of the Heart, c1480 (1945). Artist: Leonardo da Vinci
Two Drawings of the Heart, c1480 (1945). From The Drawings of Leonardo da Vinci. [Reynal & Hitchcock, New York, 1945]

Aerostiers et Observateurs en Ballon; Tandis que le ballon, abandonne a son sort, acheve... 1917. Creator: Unknown
Aerostiers et Observateurs en Ballon; Tandis que le ballon, abandonne a son sort, acheve de bruler a terre, deux sapeurs s'efforcent de sauver la soupape qui est la plus precieuse de

Perreaux's patent pump valves in the International Exhibition, 1862. Creator: Unknown
Perreaux's patent pump valves in the International Exhibition, 1862. This method of constructing pump-valves is extremely ingenious, simple

Pump Valve and Sucker, 1939. Creator: Alexander Anderson
Pump Valve and Sucker, 1939

Safety Valve, Rocket Engine, Liquid Fuel, R. H. Goddard, 1930s. Creator: Robert Goddard
This valve was made by the American rocket pioneer Dr. Robert H. Goddard (1882-1945) to protect his liquid oxygen tanks from bursting due to too much pressure caused by evaporation of the very cold

Cross section of the tube, &c. 1845. Creator: Unknown
Cross section of the tube, &c. 1845. Diagram showing the workings of an atmospheric railway, a system using air pressure for locomotion, invented by Clegg and Samuda

James Watts Steam Engine at Work, c1934. Illustration showing James Watts (1736-1819) revolutionary invention with explanatory diagram of its functioning

Interior of the pump House at Brookhouse Colliery in South Yorkshire, 13 Dec 1962
Interior of the pump house at Brookhouse Colliery in South Yorkshire, 13 Dec 1962

Transmitting valves at Marconi Station in Carnarvon, Gwynedd, 1926. From An Outline of Christianity, The Story of Our Civilisation, volume 4: Christianity and Modern Thought

Kingstown and Dalkey Atmospheric Railway, near Dublin, 1845. This was built on the Samuel Clegg Jnr (1814-1856) and Joseph Samuda (1813-1885) system, also used on the Croydon, the South Devon

Circulation of the blood, 1628. English physician William Harvey (1578-1657) was the first to correctly describe the mechanism whereby blood is circulated in the body

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