James Henry Greathead
Encyclopedia
James Henry Greathead was an engineer
Engineer
An engineer is a professional practitioner of engineering, concerned with applying scientific knowledge, mathematics and ingenuity to develop solutions for technical problems. Engineers design materials, structures, machines and systems while considering the limitations imposed by practicality,...

 renowned for his work on the London Underground
London Underground
The London Underground is a rapid transit system serving a large part of Greater London and some parts of Buckinghamshire, Hertfordshire and Essex in England...

 railway.

Early life

Greathead was born in Grahamstown
Grahamstown
Grahamstown is a city in the Eastern Cape Province of the Republic of South Africa and is the seat of the Makana municipality. The population of greater Grahamstown, as of 2003, was 124,758. The population of the surrounding areas, including the actual city was 41,799 of which 77.4% were black,...

, South Africa
South Africa
The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

; of English descent, Greathead's grandfather had emigrated to South Africa
South Africa
The Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...

 in 1820. He was educated at St Andrew's College, Grahamstown, and the Diocesan College
Diocesan College
The Diocesan College, or Bishops as it is more commonly known, is an independent, all-boys school situated in the suburb of Rondebosch in Cape Town, South Africa...

 private school in Cape Town
Cape Town
Cape Town is the second-most populous city in South Africa, and the provincial capital and primate city of the Western Cape. As the seat of the National Parliament, it is also the legislative capital of the country. It forms part of the City of Cape Town metropolitan municipality...

. After migrating to England in 1859, he completed his education from 1859 to 1863 at the Westbourne Collegiate School, Westbourne Grove
Westbourne Grove
Westbourne Grove is a retail road running across Notting Hill, in the Royal Borough of Kensington and Chelsea, a section of west London, England. It runs from Kensington Park Road in the west to Queensway in the east, crossing over Portobello Road...

. He returned briefly to South Africa before finally moving to London in 1864 to serve a three-year pupillage
Pupillage
A pupillage, in England and Wales, Northern Ireland and Ireland, is the barrister's equivalent of the training contract that a solicitor undertakes...

 under the civil engineer Peter W. Barlow
Peter W. Barlow
Peter William Barlow was an English civil engineer.He was born at Woolwich, the son of an engineer and mathematician, professor Peter Barlow of the Royal Military Academy, Woolwich...

, from whom he became acquainted with the shield system of tunnelling. He spent some time (around 1867) as assistant engineer on the Midland Railway
Midland Railway
The Midland Railway was a railway company in the United Kingdom from 1844 to 1922, when it became part of the London, Midland and Scottish Railway....

 between Bedford and London
London
London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

 (working with Barlow's brother, William Henry Barlow
William Henry Barlow
On 28 December 1879, the central section of the North British Railway's bridge across the River Tay near Dundee collapsed in the Tay Bridge disaster as an express train crossed it in a heavy storm. All 75 passengers and crew on the train were killed...

).

Tunnelling

Soon after, in 1869, he rejoined Barlow and they began work on designs for the Tower Subway
Tower Subway
The Tower Subway is a tunnel, dug in 1869, beneath the River Thames in central London, close to the Tower of London. Its alignment runs between Tower Hill on the north side of the river and Vine Lane to the south...

, only the second tunnel
Tunnel
A tunnel is an underground passageway, completely enclosed except for openings for egress, commonly at each end.A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. Some tunnels are aqueducts to supply water for consumption or for hydroelectric stations or are sewers...

 to be driven under the river Thames in central London. Barlow was the engineer for the tunnel and Greathead was in charge of the actual drive. The tunnelling shield
Tunnelling shield
A tunnelling shield is a protective structure used in the excavation of tunnels through soil that is too soft or fluid to remain stable during the time it takes to line the tunnel with a support structure of concrete, cast iron or steel...

 for driving the Tower Subway, while designed by Greathead, was inspired by Barlow's ideas for a circular tunnelling shield which he had patented in 1864 and 1868. The shield was named the Barlow-Greathead shield and consisted of an iron cylinder 7 in 3 in (2.21 m) in diameter fitted with screw jacks which enabled it to be jacked forward. In use, the shield was inched forward as the working face was excavated, while behind it a permanent tunnel lining of cast iron segments was fitted into place, itself an important innovation. Greathead patented many of his improvements including the use of compressed air and forward propulsion by hydraulic jacks, both of which are now standard features of tunnel construction.

He was also a consultant in relation to the construction of the Blackwall Tunnel
Blackwall Tunnel
The Blackwall Tunnel is a pair of road tunnels underneath the River Thames in east London, linking the London Borough of Tower Hamlets with the London Borough of Greenwich, and part of the A102 road. The northern portal lies just south of the East India Dock Road in Blackwall; the southern...

.

Railways

In 1873 Greathead became resident engineer on the Hammersmith extension railway
Metropolitan railway
Metropolitan Railway can refer to:* Metropolitan line, part of the London Underground* Metropolitan Railway, the first underground railway to be built in London...

 and the Richmond extension of the Metropolitan District Railway
Metropolitan District Railway
The Metropolitan District Railway was the predecessor of the District line of the London Underground. Set up on 29 July 1864, at first to complete the "Inner Circle" railway around central London, it was gradually extended into the suburbs...

, a post which he held for four years. After this he assisted in the preparation of the Regents Canal Railway (1880), the Metropolitan Outer Circle Railway (1881), a new London-Eastbourne line (1883) and in various light railways in Ireland (1884). Also in 1884, Greathead was engaged as engineer on the London (City) & Southwark Subway, later the City & South London Railway
City & South London Railway
The City and South London Railway was the first deep-level underground "tube" railway in the world, and the first major railway to use electric traction...

 (and now part of the Northern Line
Northern Line
The Northern line is a London Underground line. It is coloured black on the Tube map.For most of its length it is a deep-level tube line. The line carries 206,734,000 passengers per year. This is the highest number of any line on the London Underground system, but the Northern line is unique in...

) which was, when it opened in 1890, the world's first underground electric railway. In 1888, he became joint engineer with Sir Douglas Fox
Charles Douglas Fox
Sir Douglas Fox was a British civil engineer.-Early life:Douglas was born in Smethwick, Staffordshire, the oldest son of Sir Charles Fox and had two brothers and a sister. Sir Charles was a civil engineer and had designed, amongst other things, The Crystal Palace in Hyde Park...

 on the Liverpool Overhead Railway
Liverpool Overhead Railway
The Liverpool Overhead Railway was the world's first electrically operated overhead railway. The railway was carried mainly on iron viaducts, with a corrugated iron decking, onto which the tracks were laid. It ran close to the River Mersey in Liverpool, England, following the line of Liverpool Docks...

 and also worked with W.R. Galbraith on the Waterloo & City Railway. His final work was on the Central London Railway
Central London Railway
The Central London Railway , also known as the Twopenny Tube, was a deep-level, underground "tube" railway that opened in London in 1900...

 with Sir John Fowler and Sir Benjamin Baker.

Honours

  • An English Heritage blue plaque
    Blue plaque
    A blue plaque is a permanent sign installed in a public place to commemorate a link between that location and a famous person or event, serving as a historical marker....

     marks his home in Barnes, south-west London, 3 St Mary's Grove, where he lived between 1885 and 1889.
  • In January 1994 a statue was erected outside the Bank Underground station next to the Royal Exchange
    Royal Exchange (London)
    The Royal Exchange in the City of London was founded in 1565 by Sir Thomas Gresham to act as a centre of commerce for the city. The site was provided by the City of London Corporation and the Worshipful Company of Mercers, and is trapezoidal, flanked by the converging streets of Cornhill and...

     in the City of London. It was unveiled by the Lord Mayor of London
    Lord Mayor of London
    The Right Honourable Lord Mayor of London is the legal title for the Mayor of the City of London Corporation. The Lord Mayor of London is to be distinguished from the Mayor of London; the former is an officer only of the City of London, while the Mayor of London is the Mayor of Greater London and...

     and is positioned on a plinth which hides a ventilation shaft for the Underground. While Bank Station was being refurbished a section of the Barlow-Greathead shield was discovered in a passageway between the Underground and the Waterloo and City Railway. The section has been painted red and a brass plate erected as a further memorial to his achievements.

Further reading

(Newsletter of the Friends of West Norwood Cemetery
West Norwood Cemetery
West Norwood Cemetery is a cemetery in West Norwood in London, England. It was also known as the South Metropolitan Cemetery.One of the first private landscaped cemeteries in London, it is one of the Magnificent Seven cemeteries of London, and is a site of major historical, architectural and...

, where Greathead is buried) (Family records) (Genealogy)
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