Marc Seguin (20 April 1786 – 24 February 1875) was a French

engineer Engineers, as practitioners of engineering, are professionals who Invention, invent, design, build, maintain and test machines, complex systems, structures, gadgets and materials. They aim to fulfill functional objectives and requirements while ...

inventor An invention is a unique or novel device, method, composition, idea, or process. An invention may be an improvement upon a machine, product, or process for increasing efficiency or lowering cost. It may also be an entirely new concept. If an ...

of the

wire file:Sample cross-section of high tension power (pylon) line.jpg, Overhead power cabling. The conductor consists of seven strands of steel (centre, high tensile strength), surrounded by four outer layers of aluminium (high conductivity). Sample d ...

cable Cable may refer to: Mechanical * Nautical cable, an assembly of three or more ropes woven against the weave of the ropes, rendering it virtually waterproof * Wire rope, a type of rope that consists of several strands of metal wire laid into a hel ...

suspension bridge A suspension bridge is a type of bridge in which the deck (bridge), deck is hung below suspension wire rope, cables on vertical suspenders. The first modern examples of this type of bridge were built in the early 1800s. Simple suspension bridg ...

and the multi-tubular steam-engine

boiler A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including water heating, centra ...

Early life

Seguin was born in

Annonay Annonay (; ) is a Communes of France, commune and largest city in the north of the Ardèche department in the Auvergne-Rhône-Alpes region of southeastern France. It is the most populous commune in the Ardèche department although it is not the ...

Ardèche Ardèche (; , ; ) is a Departments of France, department in Auvergne-Rhône-Alpes, Southeastern France. It is named after the river Ardèche (river), Ardèche and had a population of 328,278 as of 2019.Seguin & Co., and Thérèse-Augustine de Montgolfier (1764–1843), a niece of the pioneer

hot air balloon A hot air balloon is a lighter-than-air aircraft consisting of a bag, called an envelope, which contains heated air. Suspended beneath is a gondola or wicker basket (in some long-distance or high-altitude balloons, a capsule), which carri ...

ist Joseph Montgolfier.

Career

Bridges

Seguin was an inventor and entrepreneur who developed the first

in continental Europe. He built and administered 186 toll-bridges throughout

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

. At the 1823

Exposition des produits de l'industrie française The Exposition des produits de l'industrie française (; ) was a public event organized in Paris, France, from 1798 to 1849. The purpose was "to offer a panorama of the productions of the various branches of industry with a view to emulation". Ba ...

a model was exhibited of a planned suspension bridge which would span the

Rhône The Rhône ( , ; Occitan language, Occitan: ''Ròse''; Franco-Provençal, Arpitan: ''Rôno'') is a major river in France and Switzerland, rising in the Alps and flowing west and south through Lake Geneva and Southeastern France before dischargi ...

from

Tain-l'Hermitage Tain-l'Hermitage (; or ), commonly known as Tain, is a commune in the French department of Drôme, southeastern France. Geography It is located on the left bank of the river Rhône, opposite Tournon-sur-Rhône, which is located in Ardèche. Th ...

Tournon-sur-Rhône Tournon-sur-Rhône (; , before 1988: ''Tournon'') is a commune in the Ardèche department of southern France. It is one of the most populous communes in the Ardèche department, after Annonay, Aubenas, and Guilherand-Granges. Geography It i ...

. The bridge, designed by Seguin, was completed in 1825.

Steam locomotives

Shortly after the

Stockton and Darlington Railway The Stockton and Darlington Railway (S&DR) was a railway company that operated in north-east England from 1825 to 1863. The world's first public railway to use steam locomotives, its first line connected coal mining, collieries near with ...

in England opened (1825) he visited it and observed

George Stephenson George Stephenson (9 June 1781 – 12 August 1848) was an English civil engineer and Mechanical engineering, mechanical engineer during the Industrial Revolution. Renowned as the "Father of Railways", Stephenson was considered by the Victoria ...

's '' Locomotion'' in operation and acquired two of his engines, which however proved unreliable in French conditions. In 1829, he delivered two steam locomotives of his own design to the Saint-Étienne–Lyon railway. Also see: These used an innovative multi-tube boiler and also prominent mechanically-driven fans to provide draught on the fire, rather than Stephenson's blastpipe. This boiler resembled the later

Scotch marine boiler A "Scotch" marine boiler (or simply Scotch boiler) is a design of steam boiler best known for its use on ships. The general layout is that of a short horizontal cylinder. One or more large cylindrical furnaces are in the lower part of the boiler ...

in some aspects, in that the boiler had a large single flue from the furnace, then many small-diameter fire-tubes returning to a chimney above the firebox door. Uniquely, Seguin's design also arranged the furnace in a large square water-jacketed firebox beneath the boiler to provide a large grate area and greater heating capacity.

Robert Stephenson Robert Stephenson , (honoris causa, Hon. causa) (16 October 1803 – 12 October 1859) was an English civil engineer and designer of locomotives. The only son of George Stephenson, the "Father of Railways", he built on the achievements of hi ...

had also made the same decision with his ''

Rocket A rocket (from , and so named for its shape) is a vehicle that uses jet propulsion to accelerate without using any surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entirely ...

'', but placed his firebox separately and ''behind'' the main boiler shell. Seguin's boiler enabled steam-engine trains to increase power and velocity from 4 miles per hour to 25 miles per hour, making railroad a more viable mode of transportation.

Other businesses

Inventor and entrepreneur, teaming with his brothers, Camille, Jules, Paul and Charles, as well as his brother in law Vincent Mignot he continued his father's successful business in textiles, paper, gas-lighting, coal mines, construction and added to it a railroad company and a bridge construction business.

Honours

Marc Seguin was voted into the ''

Académie des Sciences The French Academy of Sciences (, ) is a learned society, founded in 1666 by Louis XIV at the suggestion of Jean-Baptiste Colbert, to encourage and protect the spirit of French Scientific method, scientific research. It was at the forefron ...

'' in 1845, was made a Knight (Chevalier) of the ''

Légion d'honneur The National Order of the Legion of Honour ( ), formerly the Imperial Order of the Legion of Honour (), is the highest and most prestigious French national order of merit, both military and Civil society, civil. Currently consisting of five cl ...

'' in 1836 and an Officer in 1866, and wrote numerous books on the use of physics and mathematics in building bridges and locomotives engines. His name is one of the 72 names inscribed on the Eiffel Tower.

References

External links

Biography and list of works
* . {{DEFAULTSORT:Seguin, Marc 1786 births 1875 deaths People from Annonay People of the Industrial Revolution French bridge engineers Conservatoire national des arts et métiers alumni 19th-century French inventors French science writers French railway pioneers French railway mechanical engineers Locomotive builders and designers Members of the French Academy of Sciences Recipients of the Legion of Honour French male non-fiction writers