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Robert Stevenson (8 June 1772–12 July 1850) was a Scottish civil engineer and famed designer and builder of lighthouses.

Early life

Stevenson was born in Glasgowmarker; his father was Alan Stevenson, a partner in a West India trading house in the city. He died of an epidemic fever on the island of St. Christophermarker when Stevenson was an infant; at much the same time, Stevenson's uncle died of the same disease, leaving his widow, Jane Lillie, in straightened financial circumstances. As a result, Stevenson was educated as an infant at a charity school.

His mother intended Robert for the ministry and to this end sent him to the school of a famous linguist of the day, Mr. Macintyre. However, in Stevenson's fifteenth year, Jane Lillie married Thomas Smith a tinsmith, lampmaker and ingenious mechanic who had in 1786 been appointed engineer to the newly formed Northern Lighthouse Board.

Professional career

Stevenson served as Smith's assistant, and was sufficiently successful that at age 19 he was entrusted with the supervision of the erection of a lighthouse on the island of Little Cumbraemarker in the River Clyde. He devoted himself with determination to follow the profession of a civil engineer, and applied himself to the practice of surveying and architectural drawing and attended lectures in mathematics and physical sciences at the Andersonian Institute at Glasgow. Study was interleaved with work - his next project was lighthouses on Orkneymarker. He made use of winter months to attend lectures in philosophy, mathematics, chemistry and natural history, as well as moral philosophy, logic and agriculture at the University of Edinburgh. He did not take a degree, however, having a poor (for the time) knowledge of Latin, and none of Greek.

In 1797 he was appointed engineer to the Lighthouse Board in succession to Smith; in 1799 he married Smith's eldest daughter Jean, who was also his stepsister, and in 1800 was adopted as Smith's business partner.

The most important work of Stevenson's life is the Bell Rock Lighthousemarker, a scheme long in the gestation and then long and extremely hazardous in the construction. This structure was based upon the design of the earlier Eddystone Lighthousemarker by John Smeaton but with several improvements. The involvement of John Rennie as a consulting engineer in the project led to some contention for the credit upon the successful completion of the project; particularly between Alan Stevenson, Robert's son, and Sir John Rennie, son of the consulting engineer. Samuel Smiles, the popular engineering author of the time, published an account taken from Rennie, which assisted in establishing his claim. History, and the Northern Lighthouse Board, give full credit to Stevenson.

Stevenson's work on the Bell Rock and elsewhere provided a fund of anecdotes of the danger in which he placed himself. Returning from the Orkneysmarker in 1794 on the sloop Elizabeth of Stromness, he had the good fortune to be rowed ashore when the Elizabeth became becalmed off Kinnaird Headmarker; the ship was later driven back by a gale to Orkney, and there foundered losing all hands. On Bell Rock, which was covered by all but the lowest tide, he tells of an occasion when one of the crew boats drifted away leaving insufficient carrying capacity for the crew in the remaining boats; the situation was saved by the timely arrival of the Bell Rock pilot boat, on an errand to deliver mail to Stevenson.

Stevenson served for nearly fifty years as engineer to the Lighthouse Board, until 1843, during which time he designed and oversaw the construction and later improvement of numerous lighthouses. He innovated in the choice of light sources, mountings, reflector design, the use of Fresnel lenses, and in rotation and shuttering systems providing lighthouses with individual signatures allowing them to be identified by seafarers. For this last innovation he was awarded a gold medal by the William I of the Netherlands.

The period after Waterloomarker and the end of the continental wars was a time of much improvement of the fabric of the country, and engineering skills were much in demand. Besides his work for the Northern Lighthouse Board, he acted as a consulting engineer on many occasions, and worked with Rennie, Alexander Nimmo, Thomas Telford, William Walker, Archibald Elliot and William Cubitt. Projects included roads, bridges, harbours, canals and railways, and river navigations. He designed and oversaw the construction of the Hutcheson Bridge in Glasgow, and the Regent Bridgemarker and approaches from the East to Edinburgh. He projected a number of canals and railways which were not built; and new and improved designs for bridges, some of which were later adopted and implemented by his successors. He invented the movable jib and balance cranes as necessary part of his lighthouse construction; and George Stephenson acknowledged his lead in the selection of malleable rather than cast-iron rails for railways.

He was made a Fellow of the Royal Society in 1815. He published an Account of the Bell Rock Lighthouse in 1824; a paper on the North Seamarker, establishing by evidence that it was eroding the eastern coastline of the United Kingdom, and that the great sandbanks were the spoil taken by the sea. He devised and tested the hypothesis that freshwater and saltwater at river mouths exist as separate and distinct streams. He contributed to the Encyclopædia Britannica and the Edinburgh Encyclopaedia, and published in a number of the scientific journals of the day.

Three of Stevenson’s sons became engineers: David, Alan, and Thomas; he also had a daughter, who assisted in writing and illustrating an account of the Bell Rock Lighthouse construction. Robert Louis Stevenson was his grandson, via Thomas.

Stevenson died on 12 July 1850 in Edinburghmarker.

Memorials to Stevenson

Stevenson College, Edinburghmarker was founded in 1970, and was named after Robert Stevenson. For at least some of his life Robert Stevenson lived at 1 Baxter's Place, Edinburgh; a building that is now called Robert Stevenson House in his memory.

A biographical account of the professional accomplishments of Stevenson and his sons is:

Works by Robert Stevenson



See also

External links


  1. Listed Building Report for Regent Bridge by Edinburgh City Council Accessed 2009-10-17

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