John Ericsson
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John Ericsson (born Johan Ericsson; July 31, 1803 – March 8, 1889) was a Swedish-American inventor. He was active in England and the United States. Ericsson collaborated on the design of the
railroad Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in tracks. In contrast to road transport, where the vehicles run on a prep ...
steam locomotive ''Novelty'', which competed in the Rainhill Trials on the Liverpool and Manchester Railway, which were won by inventor George Stephenson's (1781-1848), ''Rocket''. In
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, he designed the
United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
's first screw-propelled steam-frigate , in partnership with Captain (later Commodore)
Robert F. Stockton Robert Field Stockton (August 20, 1795 – October 7, 1866) was a United States Navy commodore, notable in the capture of California during the Mexican–American War. He was a naval innovator and an early advocate for a propeller-driven, steam- ...
(1795-1866), who unjustly blamed him for a fatal accident. A new partnership with
Cornelius H. DeLamater Cornelius Henry DeLamater (August 30, 1821 – February 2, 1889) was an industrialist who owned DeLamater Iron Works in New York City. The steam boilers and machinery for the ironclad were built in DeLamater's foundry during the Civil War.< ...
(1821-1889), of the DeLamater Iron Works in
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resulted in the first armoured
ironclad warship An ironclad is a steam engine, steam-propelled warship protected by Wrought iron, iron or steel iron armor, armor plates, constructed from 1859 to the early 1890s. The ironclad was developed as a result of the vulnerability of wooden warships ...
equipped with a rotating
gun turret A gun turret (or simply turret) is a mounting platform from which weapons can be fired that affords protection, visibility and ability to turn and aim. A modern gun turret is generally a rotatable weapon mount that houses the crew or mechanis ...
, , which dramatically saved the U.S. ( Union Navy) naval blockading squadron from destruction by an ironclad Confederate States naval vessel, , at the famous Battle of Hampton Roads at the southern mouth of
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(with the James River) in March 1862, during the
American Civil War The American Civil War (April 12, 1861 – May 26, 1865; also known by Names of the American Civil War, other names) was a civil war in the United States. It was fought between the Union (American Civil War), Union ("the North") and t ...
.


Early career

Johan Ericsson was born at Långban in Värmland, Sweden. He was the younger brother of Nils Ericson (1802–1870), a distinguished canal and railway builder in Sweden. Their father Olaf Ericsson (1778–1818) had worked as the supervisor for a mine in Värmland. He had lost money in speculation and had to move his family to Forsvik in 1810. There he worked as a director of blastings during the excavation of the Swedish
Göta Canal The Göta Canal ( sv, Göta kanal) is a Swedish canal constructed in the early 19th century. The canal is long, of which were dug or blasted, with a width varying between and a maximum depth of about .Uno Svedin, Britt Hägerhäll Anians ...
. The extraordinary skills of the two Ericsson brothers were discovered by Baltzar von Platen (1766–1829), the architect of
Göta Canal The Göta Canal ( sv, Göta kanal) is a Swedish canal constructed in the early 19th century. The canal is long, of which were dug or blasted, with a width varying between and a maximum depth of about .Uno Svedin, Britt Hägerhäll Anians ...
. They were dubbed 'cadets of mechanics' of the
Swedish Royal Navy The Swedish Navy ( sv, Svenska marinen) is the naval branch of the Swedish Armed Forces. It is composed of surface and submarine naval units – the Fleet () – as well as marine units, the Amphibious Corps (). In Swedish, vessels o ...
, and engaged as trainees at the canal enterprise. At the age of fourteen, John was already working independently as a surveyor. His assistant had to carry a footstool for him to reach the instruments during surveying work. At the age of seventeen he joined the Swedish army in Jämtland, serving in the
Jämtland Ranger Regiment Jämtland (; no, Jemtland or , ; Jamtish: ''Jamtlann''; la, Iemptia) is a historical province () in the centre of Sweden in northern Europe. It borders Härjedalen and Medelpad to the south, Ångermanland to the east, Lapland to the north ...
, as a Second Lieutenant, but was soon promoted to Lieutenant. He was sent to northern Sweden to do surveying, and in his spare time he constructed a
heat engine In thermodynamics and engineering, a heat engine is a system that converts heat to mechanical energy, which can then be used to do mechanical work. It does this by bringing a working substance from a higher state temperature to a lower stat ...
which used the fumes from the fire instead of steam as a propellant. His skill and interest in mechanics made him resign from the army and move to England in 1826. However, his heat engine was not a success, as his prototype was designed to burn
birch A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech- oak family Fagaceae. The genus ''Betula'' cont ...
wood and would not work well with coal (the main fuel used in England). Notwithstanding the disappointment, he invented several other mechanisms instead based on steam, improving the heating process by incorporating bellows to increase
oxygen Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements ...
supply to the fire bed. In 1829 he and English engineer John Braithwaite (1797–1870) built ''Novelty'' for the Rainhill Trials arranged by the Liverpool and Manchester Railway. It was widely praised but suffered recurring boiler problems, and the competition was won by English engineers George and Robert Stephenson with ''Rocket''. Two further engines were built by Braithwaite and Ericsson, named '' William IV'' and ''Queen Adelaide'' after the new king and queen. These were generally larger and more robust than ''Novelty'' and differed in several details (for example it is thought that a different design of blower was used which was an 'Induced Draught' type, sucking the gases from the fire). The pair ran trials on the Liverpool and Manchester Railway but the railway declined to purchase the new designs. Their innovative steam fire engine proved an outstanding technical success by helping to quell the memorable Argyll Rooms fire on February 5, 1830 (where it worked for five hours when the other engines were frozen up), but was met with resistance from London's established 'Fire Laddies' and municipal authorities. An engine Braithwaite and Ericsson constructed for Sir John Ross's 1829 Arctic expedition failed and was dumped on the shores of Prince Regent Inlet. At this stage of Ericsson's career the most successful and enduring of his inventions was the surface condenser, which allowed a steamer to recover fresh water for its boilers while at sea. His 'deep sea lead,' a pressure-activated fathometer was another minor, but enduring success. The commercial failure and development costs of some of the machines devised and built by Ericsson during this period put him into debtors' prison for an interval. At this time he also married 19-year-old Amelia Byam, a disastrous match that ended in the couple's separation until Amelia's death. He was elected as a member to the
American Philosophical Society The American Philosophical Society (APS), founded in 1743 in Philadelphia, is a scholarly organization that promotes knowledge in the sciences and humanities through research, professional meetings, publications, library resources, and communit ...
in 1877.


Education

His only formal education was a basic officer's education and training during his time in the Swedish Army. On March 27, 1822, John passed a surveyor's examination in Stockholm. As a child he was taught to be a miner and surveyor by his father.


Propeller design

He then improved ship design with two screw- propellers rotating in opposite directions (as opposed to earlier tests with this technology, which used a single screw). However, the
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disapproved of the invention, which led to the fortunate contact with the American captain
Robert Stockton Robert Field Stockton (August 20, 1795 – October 7, 1866) was a United States Navy commodore, notable in the capture of California during the Mexican–American War. He was a naval innovator and an early advocate for a propeller-driven, steam-p ...
who had Ericsson design a propeller steamer for him and invited him to bring his invention to the United States of America, as it would supposedly be more welcomed in that place. As a result, Ericsson moved to New York in 1839. Stockton's plan was for Ericsson to oversee the development of a new class of frigate with Stockton using his considerable political connections to grease the wheels. Finally, after the succession to the Presidency by John Tyler, funds were allocated for a new design. However, they only received funding for a 700-ton sloop instead of a frigate. The sloop eventually became , named after Stockton's hometown. The ship took about three years to complete and was perhaps the most advanced warship of its time. In addition to twin screw propellers, it was originally designed to mount a 12-inch muzzle-loading gun on a revolving pedestal. The gun had also been designed by Ericsson and used hoop construction to pre-tension the
breech Breech may refer to: * Breech (firearms), the opening at the rear of a gun barrel where the cartridge is inserted in a breech-loading weapon * breech, the lower part of a pulley block * breech, the penetration of a boiler where exhaust gases leave ...
, adding to its strength and allowing safe use of a larger charge. Other innovations on the ship design included a collapsible funnel and an improved recoil system. The relations between Ericsson and Stockton had grown tense over time and, approaching the completion of the ship, Stockton began working to force Ericsson out of the project. Stockton carefully avoided letting outsiders know that Ericsson was the primary inventor. Stockton attempted to claim as much credit for himself as possible, even designing a second gun to be mounted in ''Princeton''. Unfortunately, because Stockton did not understand the design of the first gun (originally named "The Orator", renamed "The Oregon" by Stockton), the second gun was fatally flawed. When launched, ''Princeton'' was an enormous success. On October 20, 1843, she won a speed trial against the paddle steamer , until then considered the fastest steamer afloat. Unfortunately, during a firing demonstration of Stockton's gun, the breech ruptured, killing Secretary of State
Abel P. Upshur Abel Parker Upshur (June 17, 1790 – February 28, 1844) was a lawyer, planter, slaveowner, judge and politician from the Eastern Shore of Virginia. Active in Virginia state politics for decades, with a brother and a nephew who became distinguis ...
and
Secretary of the Navy The secretary of the Navy (or SECNAV) is a statutory officer () and the head (chief executive officer) of the Department of the Navy, a military department (component organization) within the United States Department of Defense. By law, the se ...
Thomas Walker Gilmer, as well as six others. Stockton attempted to deflect the blame onto Ericsson, with moderate success, despite the fact Ericsson's gun was sound and it was Stockton's gun that had failed. Stockton also refused to pay Ericsson, and by using his political connections, Stockton blocked the Navy from paying him.


Friendship with Cornelius H. DeLamater

When Ericsson arrived from England and settled in New York City, he was persuaded by Samuel Risley of
Greenwich Village Greenwich Village ( , , ) is a neighborhood on the west side of Lower Manhattan in New York City, bounded by 14th Street to the north, Broadway to the east, Houston Street to the south, and the Hudson River to the west. Greenwich Village ...
to give his work to the Phoenix Foundry. There he met industrialist
Cornelius H. DeLamater Cornelius Henry DeLamater (August 30, 1821 – February 2, 1889) was an industrialist who owned DeLamater Iron Works in New York City. The steam boilers and machinery for the ironclad were built in DeLamater's foundry during the Civil War.< ...
(1821–1889) and soon a mutual attachment developed between the two. Rarely thereafter did Ericsson or DeLamater enter upon a business venture without first consulting the other." Personally, their friendship never faltered, though strained by the pressures of business and Ericsson's quick temper, DeLamater called Ericsson "John" and Ericsson called DeLamater by his middle nickname "Harry", intimacies almost unknown in Ericsson's other relationships. In time, the DeLamater Iron Works became known as the Asylum where Capt Ericsson had free rein to experiment and attempt new feats. The Iron Witch was next constructed, the first iron steamboat. The first hot-air invention of Capt Ericsson was first introduced in the ship ''Ericsson'', built entirely by DeLamater. The DeLamater Iron Works also launched the first submarine boat, first self-propelled torpedo, and first torpedo boat. When DeLamater died on February 2, 1889, Ericsson could not be consoled. Ericsson's death one month later was not surprising to his close friends and acquaintances."


Hot air engine

Ericsson then proceeded to invent independently the caloric, or hot air, engine in the 1820s which used hot air, caloric in the scientific parlance of the day, instead of steam as a working fluid. A similar device had been patented in 1816 by the Reverend Robert Stirling, whose technical priority of invention provides the usual term 'Stirling Engine' for the device. Ericsson's engine was not initially successful due to the differences in combustion temperatures between Swedish wood and British coal. In spite of his setbacks, Ericsson was awarded the Rumford Prize of the American Academy of Arts and Sciences in 1862 for his invention. In 1830 Ericsson patented his second engine, that can work either with steam, air or water. This rotative engine objective is to reduce the engine within more convenient limits without any corresponding loss of power. In 1833 Ericsson built his third engine, a hot air engine (or caloric engine) that is exhibited in London: "the engine will prove the most important mechanical invention ever conceived by the human mind, and one that will confer greater benefits on civilized life than any that has ever preceded it" (John O. Sargent). This engine included a regenerator that would inspire many other hot air engine inventors. The caloric ship, powered by the 4th Ericsson engine was built in 1852. A group of New York merchants and financiers headed by John B Kitching, Edward Dunham, President of the Corn Exchange Bank, and G.B. Lamar, president of the Bank of the Republic, backed the project and in April, 1852, the keel of the ship was laid at the yard of Perine, Patterson, and Stack in Williamsburgh. At about the same time the construction of the engine was commenced by Messrs Hogg and Delamater. Hull and machinery were built in the greatest possible secrecy, both Ericsson and his financial backers being convinced that their ship would revolutionize ocean transport by its economy and safety, and that competitors would if possible copy the design of at least the engine. On September 15, 1852, the ship was launched and in November the engine was turned over at the dock under its own power. It will be a failure. Smaller experimental engines based on the same patent design and built before the caloric ship will prove to be working efficiently. In his later years, the caloric engine would render Ericsson comfortably wealthy, as its boilerless design made it a much safer and more practical means of power for small industry than steam engines. Ericsson's incorporation of a 'regenerator' heat sink for his engine made it tremendously fuel-efficient. Apparently in the post Civil War era some time before or around 1882, from the publishing date, a ship was purchased by a Captain Charles L. Dingley called the ''Ericsson'' with a weight of 1,645 tons that was built by John Ericsson (Although the above section on John Ericsson's Friendship with Cornelius H. DeLamater says that the ship known as the ''Ericsson'' was built by the DeLamater Iron Works) to try out the hot air engine as a motive power in open ocean navigation. In 1883 John Ericsson built a solar air engine of 1 HP. The leading feature of the sun motor is that of concentrating the radiant heat by means of a rectangular trough having a curved bottom lined on the inside with polished plates, so arranged that they reflect the sun's rays toward a cylindrical heater placed longitudinally above the trough. This heater, it is scarcely necessary to state, contains the acting medium, steam or air, employed to transfer the solar energy to the motor; the transfer being effected by means of cylinders provided' with pistons and valves resembling those of motive engines of the ordinary type. Practical engineers, as well as scientists, have demonstrated that solar energy cannot be rendered available for producing motive power, in consequence of the feebleness of solar radiation.


Ship design

On September 26, 1854, Ericsson presented Napoleon III of France with drawings of iron-clad armored battleships with a dome-shaped gun tower, and even though the French emperor praised this particular plan of an invention, he did nothing to bring it to practical application. In 1851 he designed the Caloric ship Ericsson.


USS ''Monitor''

Shortly after the
American Civil War The American Civil War (April 12, 1861 – May 26, 1865; also known by Names of the American Civil War, other names) was a civil war in the United States. It was fought between the Union (American Civil War), Union ("the North") and t ...
broke out in 1861, the Confederacy began constructing an ironclad ram upon the hull of which had been partially burned and then sunk by Federal troops before it was captured by forces loyal to the Commonwealth of Virginia. Nearly concurrently, the
United States Congress The United States Congress is the legislature of the federal government of the United States. It is Bicameralism, bicameral, composed of a lower body, the United States House of Representatives, House of Representatives, and an upper body, ...
had recommended in August 1861 that armored ships be built for the American Navy. Ericsson still had a dislike for the U.S. Navy, but he was nevertheless convinced by Lincoln's hard-working Secretary of the Navy Gideon Welles, and Cornelius Scranton Bushnell to submit an ironclad ship design to them. Ericsson later presented drawings of , a novel design of armored ship which included a rotating turret housing a pair of large cannons. Despite controversy over the unique design, based on Swedish lumber rafts, the keel was eventually laid down and the ironclad was launched on March 6, 1862. The ship went from plans to launch in approximately 100 days, an amazing achievement. On March 8, the former USS ''Merrimack'', rechristened , was wreaking havoc on the wooden Union Blockading Squadron in Virginia, sinking and . ''Monitor'' appeared the next day, initiating the first battle between ironclad warships on March 9, 1862, at Hampton Roads,
Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth are ...
. The battle ended in a tactical stalemate between the two ironclad warships, neither of which appeared capable of sinking the other, but strategically saved the remaining Union fleet from defeat. After this, numerous
monitors Monitor or monitor may refer to: Places * Monitor, Alberta * Monitor, Indiana, town in the United States * Monitor, Kentucky * Monitor, Oregon, unincorporated community in the United States * Monitor, Washington * Monitor, Logan County, West ...
were built for the Union, including twin turret versions, and contributed greatly to the naval victory of the Union over the rebellious states. Despite their low draft and subsequent problems in navigating in high seas, many basic design elements of the ''Monitor'' class were copied in future warships by other designers and navies. The rotating turret in particular is considered one of the greatest technological advances in naval history, still found on warships today.


Later designs

Later Ericsson designed other naval vessels and weapons, including a type of torpedo and a destroyer, a torpedo boat that could fire a cannon from an underwater port. He also provided some technical support for
John Philip Holland John Philip Holland ( ga, Seán Pilib Ó hUallacháin/Ó Maolchalann) (24 February 184112 August 1914) was an Irish engineer who developed the first submarine to be formally commissioned by the US Navy, and the first Royal Navy submarine, ''H ...
in his early submarine experiments. In the book ''Contributions to the Centennial Exhibition'' (1877, reprinted 1976) he presented his "sun engines", which collected solar heat for a hot air engine. One of these designs earned Ericsson additional income after being converted to work as a methane gas engine.


Death and ensuing controversy

Ericsson died on March 8, 1889, the anniversary of the Battle of Hampton Roads, in which his ''Monitor'' famously played a central role. His wish to be buried in his native land sparked a series of articles in the ''
New York Times ''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid ...
'' alleging that, by selecting the third-rate to transport his remains, the US Navy was not paying proper respect to Ericsson. The Navy responded and sent the remains on the , escorted by other ships such as . On August 23, 1890, the fleet departed with a twenty-one gun salute and the Swedish flag hoisted on every ship of the squadron. Captain Joseph Henderson was allotted the task to take the cruiser Baltimore safely out to sea. Around 100,000 people turned out for the funeral procession and departure ceremonies, including several veterans of the USS ''Monitor''. His final resting place is at Filipstad in Värmland, Sweden.


Inventions

*The surface condenser *The hot air engine *The world's first
monitor Monitor or monitor may refer to: Places * Monitor, Alberta * Monitor, Indiana, town in the United States * Monitor, Kentucky * Monitor, Oregon, unincorporated community in the United States * Monitor, Washington * Monitor, Logan County, West ...
, , was both designed and built by Ericsson for the Union Navy in the
American Civil War The American Civil War (April 12, 1861 – May 26, 1865; also known by Names of the American Civil War, other names) was a civil war in the United States. It was fought between the Union (American Civil War), Union ("the North") and t ...
* Torpedo technology, especially ''Destroyer'', an advanced torpedo boat *The solar machine, using concave mirrors to gather sun radiation strong enough to run an engine. * * Hoop gun construction *the propeller


Fellowships

*Foreign member of the Royal Swedish Academy of Sciences in 1850, Swedish member from 1863 * Royal Swedish Academy of War Sciences in 1852 *Honorary Doctorate at Lund University in 1868


Monuments and memorials

The stamp commemorating John Ericsson on April 20, 1926, coincided with the unveiling of the Ericsson Memorial in West Potomac Park, Washington, DC directly south of the Lincoln Memorial. The stamp pictures the memorial design by J. H. Frazer. The seated figure of Ericsson has the figures above and behind him of Vision, Labor and Adventure.Ericsson Memorial Issue
, Arago: people, postage & the post, Smithsonian National Postal Museum, viewed September 29, 2014. Monuments in honor of John Ericsson have been erected at: *
John Ericsson National Memorial John Ericsson Memorial, located near the National Mall at Ohio Drive and Independence Avenue, SW, in Washington, D.C., is dedicated to the man who revolutionized naval history with his invention of the screw propeller. The Swedish engineer Joh ...
on The Mall in Washington, D.C. *John Ericsson Room at the
American Swedish Historical Museum The American Swedish Historical Museum is the oldest Swedish-American museum in the United States. It is located in Franklin Delano Roosevelt Park in South Philadelphia, on part of a historic 17th-century land grant originally provided by Que ...
in
Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since ...
*
John Ericsson Statue ''John Ericsson'' is a Heroic-Scale bronze statue depicting John Ericsson, and is located in Battery Park in New York City History The statue depicts the esteemed Swedish-American engineer and inventor John Ericsson (1803–1889), who helped to ...
in Battery Park in
New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...
. Public Middle School 126 in the Greenpoint section of
Brooklyn Brooklyn () is a borough of New York City, coextensive with Kings County, in the U.S. state of New York. Kings County is the most populous county in the State of New York, and the second-most densely populated county in the United States, be ...
is also named for him. *
Nybroplan Nybroplan ( Swedish for "New Bridge square") is a public space in central Stockholm, Sweden. Located on the border between the city districts Norrmalm and Östermalm, Nybroplan connects a number of major streets, including Birger Jarlsgatan, St ...
in
Stockholm Stockholm () is the capital and largest city of Sweden as well as the largest urban area in Scandinavia. Approximately 980,000 people live in the municipality, with 1.6 million in the urban area, and 2.4 million in the metropo ...
* Kungsportsavenyn in Gothenburg *John Ericsson Street, in Lund, Sweden *John Ericsson fountain, Fairmount Park,
Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since ...
*Neighborhood of
Ericsson, Minneapolis Ericsson is a neighborhood within the Nokomis community in Minneapolis Minneapolis () is the largest city in Minnesota, United States, and the county seat of Hennepin County. The city is abundant in water, with thirteen lakes, wetland ...
* Långbanshyttan, his birthplace, in Sweden Ships named in his honor: * Organizations:
The John Ericsson Republican League of Illinois
is a Swedish-American partisan organization. Mount Ericsson, a mountain summit located in the Sierra Nevada mountains of California, is named in his honor.


In popular culture

Ericsson is a major character in Harry Harrison's novels of alternate history, the '' Stars and Stripes trilogy''.


See also

* ''Independence'' (steamboat), first steamboat to run on the Great Lakes, employing propellers designed by Ericsson *
American Swedish Historical Museum The American Swedish Historical Museum is the oldest Swedish-American museum in the United States. It is located in Franklin Delano Roosevelt Park in South Philadelphia, on part of a historic 17th-century land grant originally provided by Que ...
, John Ericsson Room * Experiment (horse powered boat) * - a Swedish monitor built 1875 and designed by Ericsson. It is currently in a Maritime Museum in Gothenburg
Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic countries, Nordic c ...
*
Ericsson cycle The Ericsson cycle is named after inventor John Ericsson who designed and built many unique heat engines based on various thermodynamic cycles. He is credited with inventing two unique heat engine cycles and developing practical engines based on ...
, a
thermodynamic cycle A thermodynamic cycle consists of a linked sequence of thermodynamic processes that involve transfer of heat and work into and out of the system, while varying pressure, temperature, and other state variables within the system, and that eventu ...
for heat engines named after John Ericsson. *
Ericsson Line A. H. Bull Steamship Company was a shipping company and passenger liner service founded in New York City in 1902 by Archibald H. Bull (1848-1920). Service started with shipping between New York and Florida. His fleet of ships then added service ...


References


Bibliography

* William Conant Church
''The Life Of John Ericsson''. Volume I
1st edition 1890. Publisher: Charles Scribner's sons 1906 (Internet Archive - online)
''The Life of John Ericsson''. Volume II
Publisher: Charles Scribner's sons 1890 (Internet Archive - online) *Constance Buel Burnett: "Captain John Ericsson: Father of the "Monitor"", Publisher: Vanguard Press, New York, 1960


Further reading


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External links


''The Life of John Ericsson''
By William Conant Church, published 1911, 660 pages.
John Ericsson National Memorial
in Washington
John Ericsson Society, New York – Centennial Anniversary year 2007
at National Inventors Hall of Fame
Monitor National Marine Sanctuary
in Gothenburg




The Original United States Warship ''Monitor''
Correspondence between Cornelius Scranton Bushnell, John Ericsson, Gideon Wells, published 1899, 52 pages, compiled by William S. Wells. * * *
The John Ericsson Collection at the New York Historical SocietyA history of John Ericsson's hot air engines.
{{DEFAULTSORT:Ericsson, John 1803 births 1889 deaths American agnostics American Civil War industrialists People of Sweden in the American Civil War 19th-century American inventors Swedish agnostics 19th-century Swedish inventors Swedish mechanical engineers Swedish military officers Swedish shipbuilders American shipbuilders American mechanical engineers American naval architects Members of the Royal Swedish Academy of Sciences Burials at New York City Marble Cemetery Swedish emigrants to the United States People from Filipstad Municipality History of firefighting American marine engineers Members of the Royal Society of Sciences in Uppsala