Savery engine, 1753.
© Science Museum / Science & Society Picture Library
Model. Thomas Savery (1650-1715) patented his design for a steam engine to raise water in 1698. The steam was heated under great presure in the boiler, then let into the cylinder where it forced the water upwards. The steam was then condensed using a jet of cold water, and the next load of water was let into the receiver from below. Savery engines were very dangerous and not very efficient. However they represent one of the first attempts to harnes the power of steam. This model is asociated with Dr Stephen Demainbray (1710-1782), a science lecturer of the 18th century.