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Edward John Dent (1790–1853) was a famous English watchmaker noted for his highly accurate
clock A clock or a timepiece is a device used to measure and indicate time. The clock is one of the oldest human inventions, meeting the need to measure intervals of time shorter than the natural units such as the day, the lunar month and ...
s and
marine chronometer A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation. It is used to determine longitude by comparing Greenwich Mean Time (GMT), or in the mode ...
s. He founded the Dent company.


Early years

Edward John Dent, son of John and Elizabeth Dent, was born in London on 19 August 1790. He was baptised on 18 October 1790, at St. Clement Danes Church in the Strand. Edward had a younger brother, William (born 11 February 1792). The boys' mother, Elizabeth, died while they were still young – she was buried on 16 May 1793.


Interest in watchmaking

At the age of 14, Dent became apprenticed to his grandfather, John Wright Dent, a tallow chandler. Under the terms of the
indenture An indenture is a legal contract that reflects or covers a debt or purchase obligation. It specifically refers to two types of practices: in historical usage, an indentured servant status, and in modern usage, it is an instrument used for commercia ...
– dated 20 August 1804 – John Wright Dent was expected to find suitable lodgings for his apprentice. Fortunately, Edward John Dent's cousin, Richard Rippon, was willing to have him. Rippon was an expert watchmaker and Dent became fascinated by watchmaking and less interested in the business of making and selling
candle A candle is an ignitable wick embedded in wax, or another flammable solid substance such as tallow, that provides light, and in some cases, a fragrance. A candle can also provide heat or a method of keeping time. A person who makes candle ...
s. Indeed, Dent became so interested in the watchmaking craft that, on 13 February 1807, his grandfather agreed to transfer the remaining years of the seven-year apprenticeship as a tallow chandler to Edward Gaudin, Watchmaker.


1814–1829: "The formative years"

In 1814, when Dent was just 24 years old, he was becoming well known as a watchmaker and clockmaker of some distinction: in this year he supplied a Standard Astronomical Clock for the
Admiralty Admiralty most often refers to: *Admiralty, Hong Kong *Admiralty (United Kingdom), military department in command of the Royal Navy from 1707 to 1964 *The rank of admiral *Admiralty law Admiralty can also refer to: Buildings * Admiralty, Traf ...
, and at least one pocket chronometer for the Colonial Office African Expedition. As early as 1814, Dent was making clocks and chronometers on his own account, but not in sufficient quantities to earn him a satisfactory livelihood. During 1815–29, it is believed that Dent worked for a number of well known firms. One such firm was Callum Brothers of Castle Street, Long Acre in London. It is almost certain Richard Rippon had worked for them, and had introduced Dent to the firm.Mercer, Vaudrey (1977). ''The Life and Letters of Edward John Dent, Chronometer Maker and some account of his Successors'', p.17, The Antiquarian Horological Society. . In 1826 Dent submitted two chronometers, Nos. 54 and 55, for trial at Greenwich. This must indicate that he had made at least 55 chronometers by 1826. His submitting chronometers for trial brought him to the notice of the authorities at the
Royal Observatory, Greenwich The Royal Observatory, Greenwich (ROG; known as the Old Royal Observatory from 1957 to 1998, when the working Royal Greenwich Observatory, RGO, temporarily moved south from Greenwich to Herstmonceux) is an observatory situated on a hill in ...
. Indeed, in 1828 Dent was employed by the Royal Observatory, Greenwich to examine and repair chronometers. His charges for repairing chronometers were as high as 25 guineas – an apparently exorbitant cost, but one that was nevertheless accepted.Mercer, Vaudrey (1977). ''The Life and Letters of Edward John Dent, Chronometer Maker and some account of his Successors'', p.18, The Antiquarian Horological Society. . In a letter to the Board of Ordnance, dated March, 1829, John Pond – at the time Astronomer Royal – described Dent as "among the best workmen of the present day." Dent's reputation for precision eventually brought requests from the
Admiralty Admiralty most often refers to: *Admiralty, Hong Kong *Admiralty (United Kingdom), military department in command of the Royal Navy from 1707 to 1964 *The rank of admiral *Admiralty law Admiralty can also refer to: Buildings * Admiralty, Traf ...
and the
East India Company The East India Company (EIC) was an English, and later British, joint-stock company founded in 1600 and dissolved in 1874. It was formed to trade in the Indian Ocean region, initially with the East Indies (the Indian subcontinent and Sou ...
. His reputation was given another boost when, in August, 1829, Dent Marine Chronometer No. 114 won the First Premium Award at the Seventh Annual Trial of Chronometers. Dent took full advantage of his win, mentioning it wherever possible in his advertisements.Mercer, Vaudrey (1977). ''The Life and Letters of Edward John Dent, Chronometer Maker and some account of his Successors'', p.19, The Antiquarian Horological Society. .


1830–1840: Arnold & Dent

In 1830, Dent learned of an opening available for a skilled craftsman in the firm of
John Roger Arnold John Arnold (1736 – 11 August 1799) was an English watchmaker and inventor. John Arnold was the first to design a watch that was both practical and accurate, and also brought the term " chronometer" into use in its modern sense, meaning a pr ...
of 84 Strand. But instead of becoming an employee of the firm, Dent became a partner. The partnership was signed on 30 September 1830. The partnership suited both men. Arnold, who was 61 at the time, could still have a say in the running of the business, and could now have time to spend on his hobby, which was inventing new mechanisms of all kinds. Dent, aged 40, was in a position to advertise his ability as a technician and to use his great business sense to put his firm on to a really sound footing. To draw attention to the firm, now known as 'Arnold & Dent', Dent arranged advertisements in '' The Nautical Magazine''. Dent also sent the results of their experiments to the editor so that they would be published in this magazine. One of the first notices – published in May, 1832 – read:
Messrs. Arnold and Dent have just completed another of those beautiful specimens of art, in the shape of a pocket chronometer, showing at once both mean time and
sidereal time Sidereal time (as a unit also sidereal day or sidereal rotation period) (sidereal ) is a timekeeping system that astronomers use to locate celestial objects. Using sidereal time, it is possible to easily point a telescope to the proper coor ...
. This is the fourth of these machines that has been made.
In an article entitled ''Hints on Chronometers'' appearing in ''Nautical Magazine'' and dated February 1833, Dent reveals that chronometer No. 633 was sent with 21 other chronometers to Captain FitzRoy on board in 1831. In fact, several of these chronometers were by Arnold and Dent. A naturalist on this, the second voyage of HMS ''Beagle'', was
Charles Darwin Charles Robert Darwin ( ; 12 February 1809 – 19 April 1882) was an English naturalist, geologist, and biologist, widely known for his contributions to evolutionary biology. His proposition that all species of life have descended ...
. Indeed, Darwin's observations on that voyage led to the publication of his ground-breaking book ''
On the Origin of Species ''On the Origin of Species'' (or, more completely, ''On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life''),The book's full original title was ''On the Origin of Species by Me ...
''. The last two years of the partnership between Arnold & Dent were unhappy ones. Dent's hopes of taking over the business were frustrated, and as a result, he became exasperated. Perhaps understandable when Dent possessed an almost fanatical determination to become the best chronometer maker in the world.Mercer, Vaudrey (1977). ''The Life and Letters of Edward John Dent, Chronometer Maker and some account of his Successors'', p.102, The Antiquarian Horological Society. . And so on 30 September 1840, the partnership of Arnold and Dent came to an end.Mercer, Vaudrey (1977). ''The Life and Letters of Edward John Dent, Chronometer Maker and some account of his Successors'', p.101, The Antiquarian Horological Society. .


Post 1840

On 1 October 1840, the firm, known as E. J. Dent, London began its existence at 82 Strand. On 21 March 1842, Dent applied for a Patent, to be entitled "Certain Improvements in Chronometers and other Timekeepers". This Patent covered various designs of compensation balance and the invention of a
Remontoire In mechanical horology, a remontoire (from the French ''remonter'', meaning 'to wind') is a small secondary source of power, a weight or spring, which runs the timekeeping mechanism and is itself periodically rewound by the timepiece's main power s ...
for use in
Marine chronometer A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation. It is used to determine longitude by comparing Greenwich Mean Time (GMT), or in the mode ...
s. In January 1843, Dent opened his second premises, at 33 Cockspur Street, just off Trafalgar Square. The shop displayed timepieces made by Breguet – whom Dent had met during his time with John Roger Arnold – as well the owner's creations. In March 1843 production and sale of Dent's
Dipleidoscope Dipleidoscope A dipleidoscope is an instrument used to determine true noon; its name comes from the Greek for ''double image viewer''. It consists of a small telescope and a prism that creates a double image of the sun. When the two images overlap ...
started (made to J. Bloxam's patent 9793 of 1843), and was to continue for some 25 years. On 1 July 1843, Edward John Dent married Elizabeth Rippon – widowed when Richard Rippon died in 1835. Dent gained two stepsons (Frederick William and Richard Edward) and two-stepdaughters (Mary Elizabeth and Amelia Lydia Sophia). Dent won the esteem of Sir George Airy, the Astronomer Royal, who recommended him as the maker of a large clock for the tower of the new Royal Exchange. Dent's tender was accepted and was announced in the ‘’Herald’’ on 20 August 1843:
NEW ROYAL EXCHANGE At the east end there is to be a Tower, one hundred and forty feet high, containing the Clock and Chimes which latter characteristic is to be revived. This Clock is to be the best specimen that can be produced of modern skill in clock-making, and is intended to furhish the Merchants and Captains with the most accurate record of time in the City of London. It is to be made by Mr. Dent, the Clock and Chronometer Maker, under the direction of the Astronomer Royal, Professor Airy. The Peal of Bells will consist of nine Bells. The tenor will weight one ton, and the others in proportion. These Bells are now being cast by Mr. Mears, who cast the Monster Bell for Canada.
Dent established a workshop in Somerset Wharf, Strand, to produce this excellent timepiece, which was installed in 1844. In 1852 Dent won the commission to make the great clock—now popularly called
Big Ben Big Ben is the nickname for the Great Bell of the Great Clock of Westminster, at the north end of the Palace of Westminster in London, England, and the name is frequently extended to refer also to the clock and the clock tower. The officia ...
—for the Houses of Parliament at
Westminster Westminster is an area of Central London, part of the wider City of Westminster. The area, which extends from the River Thames to Oxford Street, has many visitor attractions and historic landmarks, including the Palace of Westminster, B ...
, but he died before completing the project. Edward John Dent died on 8 March 1853, at the age of 62 and his adopted son completed the Great Clock.


The Dent company

Frederick Rippon Dent finished Big Ben in 1854. Dent's stepsons, Frederick and Richard, took his name and succeeded to his business and eventually became E.Dent & Co Ltd which ceased to trade in 1966."Guildhall Library Manuscripts Section: General Guide"
Institute of Historical Research, University of London, retrieved an
archived
27 October 2011.


References

{{DEFAULTSORT:Dent, Edward John 1790 births 1853 deaths 18th-century English people 19th-century English people English designers English clockmakers English watchmakers (people) Turret clock makers of the United Kingdom