Beatrice Lang
The electric telegraph was developed in the mid-19th century and was the principal means of transmitting printed information for over a century. The idea of using electricity to communicate over distance is said to have occurred to Samuel Morse in 1832, and he developed Morse Code (a set of sounds that corresponded to particular letters of the alphabet) in 1835. However, Morse was not the only person to develop the technology behind the electric telegraph. In 1837, William Fothergill Cooke and Charles Wheatstone patented a telegraph system that used a number of needles on a board that could be moved to point to letters of the alphabet. The same year, Morse also patented his recording electric telegraph.
| Characteristics | Values |
|---|---|
| Year of development of the electric telegraph | Mid-19th century |
| Year of development of the first working telegraph | 1816 |
| Inventor of the first working telegraph | Francis Ronalds |
| Year of development of the first operative electric telegraph | 1833 |
| Inventors of the first operative electric telegraph | Gauss and Weber |
| Year of development of the first commercial telegraph | 1837 |
| Inventors of the first commercial telegraph | William Fothergill Cooke and Charles Wheatstone |
| Year Samuel Morse independently developed and patented a recording electric telegraph | 1837 |
| Year Royal Earl House developed and patented a letter-printing telegraph system | 1846 |
| Year David Edward Hughes invented the printing telegraph | 1855 |
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What You'll Learn
- Samuel Morse independently developed and patented a telegraph in 1837
- William Fothergill Cooke and Charles Wheatstone co-developed a telegraph system in 1837
- Edward Davy invented a printing telegraph and was granted a patent in 1838
- Royal Earl House developed a printing telegraph in 1846
- David Edward Hughes invented the printing telegraph in 1855
Samuel Morse independently developed and patented a telegraph in 1837
Samuel Finley Breese Morse was an American inventor and painter who contributed to the invention of the electric telegraph. In 1832, Morse became interested in the possibility of electric telegraphy and made sketches of ideas for such a system. He developed the concept of a single-wire telegraph and, in 1835, devised a system of dots and dashes to represent letters and numbers.
By 1837, Morse had turned his full attention to his new invention. That year, he independently developed and patented a recording electric telegraph. Morse's assistant, Alfred Vail, developed an instrument called the register for recording received messages. It embossed dots and dashes on a moving paper tape by a stylus, which was operated by an electromagnet. Together, Morse and Vail developed the Morse code signalling alphabet.
Morse travelled to Washington, D.C., in 1838, seeking federal sponsorship for a telegraph line but was unsuccessful. He then went to Europe, seeking both sponsorship and patents, but discovered that Cooke and Wheatstone had already established priority. After returning to the US, Morse finally gained financial backing from Maine congressman Francis Ormand Jonathan Smith. In December 1842, Morse made his last trip to Washington, D.C., where he strung wires between two committee rooms in the Capitol and sent messages back and forth to demonstrate his telegraph system. Congress appropriated $30,000 for the construction of an experimental 38-mile telegraph line between Washington, D.C., and Baltimore, which Morse completed in 1844. On 24 May 1844, Morse sent the historic first message, "WHAT HATH GOD WROUGHT?", from the Capitol in Washington to his partner, Alfred Vail.
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William Fothergill Cooke and Charles Wheatstone co-developed a telegraph system in 1837
In 1837, William Fothergill Cooke and Charles Wheatstone co-developed a telegraph system that used multiple needles on a board that could be moved to point to letters of the alphabet. The number of needles could vary depending on the number of characters required to code. Cooke and Wheatstone patented their system in May 1837, recommending the use of five needles to code twenty of the twenty-six letters of the alphabet.
The Cooke-Wheatstone electrical telegraph was the first of its kind, with the pair obtaining a patent on a system that employed six wires and actuated five needle pointers. This was the first working model of an electric telegraph, with previous attempts by other inventors being unsuccessful due to transmission wire losses, especially in poor weather.
Cooke and Wheatstone's invention built upon the work of other pioneers in the field. In 1820, Hans Christian Ørsted discovered that a magnetic needle could be deflected by a wire carrying an electric current. This was followed by William Sturgeon's discovery of the multiturn electromagnet in 1825. In 1831, Michael Faraday and Joseph Henry refined electromagnetism to a point where practical electromagnetic devices could be designed. In 1835, Joseph Henry and Edward Davy independently invented the mercury dipping electrical relay, with Davy also inventing a printing telegraph.
The development of the electric telegraph was a significant milestone in the history of communication. It marked a transition from visual telegraphs, which had been in use since the late 18th century, to a new era of electrical encoding. The Cooke-Wheatstone system played a pivotal role in this evolution, paving the way for subsequent innovations in telegraph technology.
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Edward Davy invented a printing telegraph and was granted a patent in 1838
The electric telegraph was developed in the mid-19th century and was the principal means of transmitting printed information for over a century. The first working telegraph was built by English inventor Francis Ronalds in 1816 and used static electricity. However, it was Edward Davy who invented a printing telegraph and was granted a patent in 1838. Davy, a physician, chemist, and inventor, had also co-invented the mercury dipping electrical relay in 1835, which involved dipping a magnetic needle into a pot of mercury when an electric current passed through the surrounding coil.
In 1837, Davy invented the metallic make-and-break relay, which became a key component in telegraph systems for renewing weak signals. Davy demonstrated his telegraph system in Regent's Park in 1837 and was granted a patent in 1838. His printing telegraph used the electric current from the telegraph signal to mark a ribbon of calico infused with potassium iodide and calcium hypochlorite. Davy's printing telegraph was followed by other innovations in the field, including Royal Earl House's letter-printing telegraph system in 1846, Alexander Bain's chemical telegraph in 1846, and David Edward Hughes' printing telegraph in 1855.
The development of the electric telegraph was a significant advancement in communication, allowing information to be transmitted over long distances through coded signals. The term 'telegraph' refers to any device or system that enables such transmission. While Davy played a crucial role in its evolution, the electric telegraph resulted from a scientific evolution that had been underway since the 18th century.
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Royal Earl House developed a printing telegraph in 1846
The printing telegraph was invented by Royal Earl House in 1846. House's telegraph system was an improvement on the existing telegraph technology of the time, which used Morse code dots and dashes that needed to be translated into readable text. House's system, called "The Magnetic Letter-Printing Telegraph", allowed the operator to use a piano-style keyboard to directly input the text of the message. The receiver would then receive the instantly readable text of the message on a paper tape in Roman characters. The printer could copy and print up to 2,000 words per hour, transmitting around 40 instantly readable words per minute. However, it was difficult to manufacture in bulk.
House's invention was first put into operation and exhibited at the Mechanics Institute in New York in 1844. By 1846, the Morse telegraph service was operational between Washington, DC, and New York, and Royal Earl House patented his printing telegraph that same year. House's Type Printing Telegraph of 1849 was his second and much-improved type-printing instrument, widely used on lines on America's east coast from 1850. By 1852, the House machine was being used on four main American telegraph lines.
Royal Earl House (1814-1895) spent his childhood in Vermont, experimenting, designing, and building. He moved to Buffalo, New York, around 1840, to live with relatives and attend law school. However, he became inspired by a work on electricity and decided to study the science of electricity instead. He was also interested in mechanics, chemistry, and magnetism.
The development of the electric telegraph in the mid-19th century revolutionized communication, becoming the principal means of transmitting printed information for over a century. The idea of using electricity to communicate over distance is said to have occurred to Samuel F.B. Morse in 1832, during a conversation aboard a ship returning from Europe. Morse developed and patented an electromagnetic telegraph in 1837, with the first message sent in 1844. Other key developments in telegraphy include the invention of the voltaic cell in 1800 by Alessandro Volta, and the discovery that a magnetic needle could be deflected by a wire carrying an electric current by Hans Christian Ørsted in 1820.
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David Edward Hughes invented the printing telegraph in 1855
The electric telegraph was developed in the mid-19th century and was the principal means of transmitting printed information for over a century. The first working telegraph was built by English inventor Francis Ronalds in 1816 and used static electricity. However, it was not until the 1830s that the technology was further developed by several inventors, including Samuel Morse, who created the recording electric telegraph in 1837.
Hughes' system was very stable and accurate and became accepted internationally. In less than two years, several small telegraph companies united to form the Western Union Telegraph Company, which used the Hughes system. The system was also adopted as an international standard in Europe.
The development of the printing telegraph built upon earlier innovations in the field of electricity, such as the voltaic cell invented by Alessandro Volta in 1800, and the discovery by Hans Christian Ørsted that a magnetic needle could be deflected by a wire carrying an electric current. These advancements laid the foundation for the creation of the electric telegraph, which revolutionized long-distance communication.
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Frequently asked questions
The electric telegraph was developed by multiple inventors, including William Fothergill Cooke, Charles Wheatstone, Samuel Morse, Edward Davy, and Joseph Henry.
Samuel Morse patented an electromagnetic telegraph in 1837. William Fothergill Cooke and Charles Wheatstone were granted a patent for an electric telegraph in 1837.
Samuel Morse and his assistant Alfred Vail developed the Morse code signalling alphabet.
