Captain Samuel Brown

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Captain Samuel Brown (1774 - 13 March 1852) was an early pioneer of chain design and manufacture and of suspension bridge design and construction. He is best known for the Union Bridge of 1820, the first vehicular suspension bridge in Britain.

Contents

[edit] Naval career

Brown joined the Royal Navy in 1795. During his service, he carried out tests on wrought iron chain cables, using them as rigging for HMS Penelope in 1806 on a voyage to the West Indies. This so impressed the Admiralty that on his return in 1808 it immediately ordered four vessels of war to be fitted with chain cables.[1]

In 1808 Brown took out patents for twisted open chain links, joining shackles and swivels. His shackle and swivel designs were scarcely improved on for the next 100 years.[2][3]

By 1811, he was promoted to Commander, and his chains were introduced to hold ships' anchors. He retired from the Navy in May 1812. Just four years later, the Royal Navy standardized on iron chain instead of hemp for all new vessels of war.[3]

[edit] Chain manufacture

He established a company (known as Samuel Brown & Co and also Brown Lenox & Co) with his cousin Samuel Lenox,[1] based initially at Millwall in east London from 1812 and then, from 1816 at a larger works (a nail works previously operated by William Crawshay Brown), establishing the Newbridge Chain & Anchor Works (Pontypridd) at Ynysangharad, beside the Glamorganshire Canal, in Pontypridd, south Wales, close to large reserves of iron and coal.[1][4][5]

His firm went on to supply all the chain to the Navy until 1916, and made the chains for Brunel's SS Great Eastern, shown in the famous photograph by Robert Howlett.

[edit] Bridge building

He took out a patent for chain-making in 1816, and patented wrought iron chain links suitable for a suspension bridge in 1817. In the same year, others built Dryburgh Bridge, the first chain-supported bridge in Britain. Brown had been experimenting with a chain-supported suspension bridge already, building a 32m span test structure in 1813.

Brown was also invited to participate in abortive proposals for a suspension bridge at Runcorn. In September 1818, he submitted drawings for Union Bridge over the River Tweed, which was completed in 1820.

Brown went on to build several further chain bridges, including the Trinity Pier Bridge in Newhaven, Edinburgh (1820-21) and the Chain Pier at Brighton (opened in 1823 but ultimately destroyed in a storm in 1896). Most of his designs used an unstiffened bridge deck, before it became clear that this form was vulnerable to wind forces and unstable under concentrated loads. His designs were reviewed by eminent engineers including John Rennie and Thomas Telford, and generally approved. However, Brown's designs were significantly less conservative than his contemporaries, adopting a higher tensile strength for his iron chains.

[edit] Major Bridges

[edit] Domestic life

One of his homes was close to the Brighton project, at 48 Marine Parade, now known as Chain Pier House. In 1827, Brown purchased Netherbyres, a country house near Eyemouth in Berwickshire, south-east Scotland,[9]. He had the existing house demolished and a new house built (c.1836), which he later sold on 5 March 1852, days before his death.[10]

Brown was elected a member of the Royal Society of Edinburgh on 7 February 1831.[11] In 1838, Brown was knighted by Queen Victoria.

He died at Vanbrugh Lodge, Blackheath, London on 13 March 1852.

[edit] References

  1. ^ a b c http://webapps.rhondda-cynon-taf.gov.uk/heritagetrail/taff/pontypridd/Pontypridd.htm
  2. ^ http://www.nvo.com/baldtus/historyoftheanchor/
  3. ^ a b http://66.241.199.22/baldt_anchor_history.htm
  4. ^ Archive Network Wales
  5. ^ A Chronology of Glamorgan
  6. ^ Welney suspension bridge
  7. ^ History of Shoreham
  8. ^ Kenmare Suspension Bridge
  9. ^ Historic Scotland
  10. ^ Netherbyres ownership
  11. ^ Royal Society of Edinburgh Fellows

[edit] Bibliography

  • 'Samuel Brown in North-East Scotland', Thomas Day, Industrial Archaeology Review, 1985
  • 'The 19th-Century Iron Bridges of Northeast Scotland', Thomas Day, Industrial Archaeology, 1998
  • 'Civil Engineering Heritage: Northern England', R.W. Rennison, Thomas Telford Publishing, 1996
  • 'Union Chain Bridge - Linking Engineering', Gordon Miller, Proceedings of the Institution of Civil Engineers 159, May 2006, pp 88-95
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