97-777: The India Office was a British government department in London established in 1858 to oversee the administration of the Provinces of India , through the British viceroy and other officials. The administered territories comprised most of the modern-day nations of the Indian Subcontinent as well as Yemen and other territories around the Indian Ocean. The India Office was headed by the Secretary of State for India ,
194-506: A 175-yard (160 m) long trench as well as an eight-mile (13 km) long overhead telegraph. The lines were connected at both ends to revolving dials marked with the letters of the alphabet and electrical impulses sent along the wire were used to transmit messages. Offering his invention to the Admiralty in July 1816, it was rejected as "wholly unnecessary". His account of the scheme and
291-730: A chief commissioner: At the time of independence in 1947, British India had 17 provinces: Upon the Partition of India into the Dominion of India and Dominion of Pakistan , eleven provinces (Ajmer-Merwara-Kekri, Andaman and Nicobar Islands, Bihar, Bombay, Central Provinces and Berar, Coorg, Delhi, Madras, Panth-Piploda, Orissa, and the United Provinces) joined India, three (Baluchistan, North-West Frontier and Sindh) joined Pakistan, and three ( Punjab , Bengal and Assam ) were partitioned between India and Pakistan. In 1950, after
388-480: A clock-face, and the signal caused a needle to indicate the letter. This early system required the receiver to be present in real time to record the message and it reached speeds of up to 15 words a minute. In 1846, Alexander Bain patented a chemical telegraph in Edinburgh. The signal current moved an iron pen across a moving paper tape soaked in a mixture of ammonium nitrate and potassium ferrocyanide, decomposing
485-468: A few kilometers (in von Sömmering's design), with each of the telegraph receiver's wires immersed in a separate glass tube of acid. An electric current was sequentially applied by the sender through the various wires representing each letter of a message; at the recipient's end, the currents electrolysed the acid in the tubes in sequence, releasing streams of hydrogen bubbles next to each associated letter or numeral. The telegraph receiver's operator would watch
582-432: A legislative power existed in such places. The same two kinds of management applied for districts. Thus Ganjam and Vizagapatam were non-regulation districts. Non-regulation provinces included: At the turn of the 20th century, British India consisted of eight provinces that were administered either by a governor or a lieutenant-governor. The following table lists their areas and populations (but does not include those of
679-799: A member of the British cabinet , who was formally advised by the Council of India . Upon the independence of India in 1947 into the new independent dominions of India and Pakistan , the India Office was closed down. Responsibility for the United Kingdom's relations with the new countries was transferred to the Commonwealth Relations Office (formerly the Dominions Office ). The East India Company
776-698: A moving paper tape by a stylus which was operated by an electromagnet. Morse and Vail developed the Morse code signalling alphabet . On May 24, 1844, Morse sent to Vail the historic first message “ WHAT HATH GOD WROUGHT " from the Capitol in Washington to the old Mt. Clare Depot in Baltimore . The first commercial electrical telegraph was the Cooke and Wheatstone system . A demonstration four-needle system
873-683: A network of " factories " throughout the south and east Indies in Asia. Over a period of 250 years the Company underwent several substantial changes in its basic character and functions. A period of rivalry between the Old and New Companies after 1698 resulted in the formation in 1709 of the United Company of Merchants Trading to the East Indies. This 'new' East India Company was transformed during
970-576: A permanent magnet and connecting the coil with the transmission wires by means of the commutator. The page of Gauss's laboratory notebook containing both his code and the first message transmitted, as well as a replica of the telegraph made in the 1850s under the instructions of Weber are kept in the faculty of physics at the University of Göttingen , in Germany. Gauss was convinced that this communication would be of help to his kingdom's towns. Later in
1067-426: A practical alphabetical system in 1840 called the A.B.C. System, used mostly on private wires. This consisted of a "communicator" at the sending end and an "indicator" at the receiving end. The communicator consisted of a circular dial with a pointer and the 26 letters of the alphabet (and four punctuation marks) around its circumference. Against each letter was a key that could be pressed. A transmission would begin with
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#17327571066451164-545: A sensitive indicator for an electric current. Also that year, André-Marie Ampère suggested that telegraphy could be achieved by placing small magnets under the ends of a set of wires, one pair of wires for each letter of the alphabet. He was apparently unaware of Schweigger's invention at the time, which would have made his system much more sensitive. In 1825, Peter Barlow tried Ampère's idea but only got it to work over 200 feet (61 m) and declared it impractical. In 1830 William Ritchie improved on Ampère's design by placing
1261-546: A short-distance transmission of signals between two telegraphs in different rooms of his apartment. In 1836, the British government attempted to buy the design but Schilling instead accepted overtures from Nicholas I of Russia . Schilling's telegraph was tested on a 5-kilometre-long (3.1 mi) experimental underground and underwater cable, laid around the building of the main Admiralty in Saint Petersburg and
1358-484: A small part of Burma, and by 1886, almost two thirds of Burma had been made part of British India. This arrangement lasted until 1937, when Burma was reorganized as a separate British colony. British India did not apply to other countries in the region, such as Sri Lanka (then Ceylon ), which was a British Crown colony , or the Maldive Islands , which were a British protectorate . At its greatest extent, in
1455-405: A steady rhythm, and the usual speed of operation was 30 words per minute. By this point, reception had been automated, but the speed and accuracy of the transmission were still limited to the skill of the human operator. The first practical automated system was patented by Charles Wheatstone. The message (in Morse code ) was typed onto a piece of perforated tape using a keyboard-like device called
1552-467: A telegraph along the Nuremberg–Fürth railway line , built in 1835 as the first German railroad, which was the first earth-return telegraph put into service. By 1837, William Fothergill Cooke and Charles Wheatstone had co-developed a telegraph system which used a number of needles on a board that could be moved to point to letters of the alphabet. Any number of needles could be used, depending on
1649-477: A useful communication system. In 1774, Georges-Louis Le Sage realised an early electric telegraph. The telegraph had a separate wire for each of the 26 letters of the alphabet and its range was only between two rooms of his home. In 1800, Alessandro Volta invented the voltaic pile , providing a continuous current of electricity for experimentation. This became a source of a low-voltage current that could be used to produce more distinct effects, and which
1746-498: A very small number of subject files. They comprise 14 kilometres of shelves of volumes, files and boxes of papers, together with 70,000 volumes of official publications and 105,000 manuscript and printed maps. 51°30′09.9″N 0°07′45.26″W / 51.502750°N 0.1292389°W / 51.502750; -0.1292389 Presidencies and provinces of British India The provinces of India , earlier presidencies of British India and still earlier, presidency towns , were
1843-616: The Battle of Buxar , the Company obtained the Diwani of Bengal, which included the right to administer and collect land-revenue (land tax) in Bengal , the region of present-day Bangladesh, West Bengal, Jharkhand and Bihar beginning from 1772 as per the treaty signed in 1765. By 1773, the Company obtained the Nizāmat of Bengal (the "exercise of criminal jurisdiction") and thereby full sovereignty of
1940-571: The Indian Empire . India was divided into British India, regions that were directly administered by the British, with acts established and passed in the British parliament, and the princely states , ruled by local rulers of different ethnic backgrounds. These rulers were allowed a measure of internal autonomy in exchange for recognition of British suzerainty . British India constituted a significant portion of India both in area and population; in 1910, for example, it covered approximately 54% of
2037-470: The 'Stick Punch'. The transmitter automatically ran the tape through and transmitted the message at the then exceptionally high speed of 70 words per minute. An early successful teleprinter was invented by Frederick G. Creed . In Glasgow he created his first keyboard perforator, which used compressed air to punch the holes. He also created a reperforator (receiving perforator) and a printer. The reperforator punched incoming Morse signals onto paper tape and
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#17327571066452134-631: The 1840s until the late 20th century. It was the first electrical telecommunications system and the most widely used of a number of early messaging systems called telegraphs , that were devised to send text messages more quickly than physically carrying them. Electrical telegraphy can be considered the first example of electrical engineering . Text telegraphy consisted of two or more geographically separated stations, called telegraph offices . The offices were connected by wires, usually supported overhead on utility poles . Many electrical telegraph systems were invented that operated in different ways, but
2231-789: The British experience in India. The India Office Records, previously housed in the India Office Library, became the responsibility of the British Library Board in 1982, and are now administered as part of the Asia, Pacific and Africa Collections of the British Library , London, as part of the Public Records of the United Kingdom. They are open for public consultation, except for recent personal files, and
2328-698: The Burma Office (1937–1948), and a number of related British agencies overseas which were officially linked with one or other of the four main bodies. The focus of the India Office Records is in the territories mainly that today include Central Asia, the Middle East, regions of Africa, South Asia, Southeast Asia and their administration before 1947. The official archives of the India Office Records are complemented by over 300 collections and over 3,000 smaller deposits of Private Papers relating to
2425-585: The Company's Indian policies. This change in the Company's status, along with other factors, led to the Acts of Parliament of 1813 and 1833 , which opened British trade with the East Indies to all shipping and resulted in the Company's complete withdrawal from its commercial functions. The Company continued to exercise responsibility, under the supervision of the Board, for the government of British India until
2522-618: The East India Company's victories at the Battle of Plassey (1757), and Battle of Buxar (1764)—both within the Bengal Presidency established in 1765—and the abolition of local rule (Nizamat) in Bengal in 1793, the company gradually began to formally expand its territories across India . By the mid-19th century, and after the three Anglo-Maratha Wars and the four Anglo-Mysore Wars , the East India Company had become
2619-825: The Government buildings in Westminster. With the Government of India Act 1858 , the Company and the Board of Control of the East India Companies were replaced by a single new department of state in London, the India Office, which functioned, under the Secretary of State for India, as an executive office of United Kingdom government alongside the Foreign Office , Colonial Office , Home Office and War Office . The Secretary of State for India
2716-579: The ITA-1 Baudot code , a five-bit code. This yielded only thirty-two codes, so it was over-defined into two "shifts", "letters" and "figures". An explicit, unshared shift code prefaced each set of letters and figures. In 1901, Baudot's code was modified by Donald Murray . In the 1930s, teleprinters were produced by Teletype in the US, Creed in Britain and Siemens in Germany. By 1935, message routing
2813-591: The Imperial palace at Tsarskoye Selo and Kronstadt Naval Base . In 1833, Carl Friedrich Gauss , together with the physics professor Wilhelm Weber in Göttingen , installed a 1,200-metre-long (3,900 ft) wire above the town's roofs. Gauss combined the Poggendorff-Schweigger multiplicator with his magnetometer to build a more sensitive device, the galvanometer . To change the direction of
2910-435: The India Office and the Burma Office were officially dissolved. As a result of the widespread involvement in the external relations and defence policy of pre-1947 African, Asian and Middle Eastern countries, the India Office was also responsible for particular neighbouring or connected areas at different times. Among the most significant of these are: Other groups of involvement have also resulted from India Office interest in
3007-754: The Madras Presidency (or the Presidency of Fort St. George), the Bombay Presidency, and the Bengal Presidency (or the Presidency of Fort William)—each administered by a governor. After Robert Clive 's victory in the Battle of Plassey in 1757, the puppet government of a new Nawab of Bengal , was maintained by the East India Company. However, after the invasion of Bengal by the Nawab of Oudh in 1764 and his subsequent defeat in
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3104-459: The Morse system became the standard for international communication, using a modified form of Morse's code that had been developed for German railways. Electrical telegraphs were used by the emerging railway companies to provide signals for train control systems, minimizing the chances of trains colliding with each other. This was built around the signalling block system in which signal boxes along
3201-519: The Morse system. As well as the rapid expansion of the use of the telegraphs along the railways, they soon spread into the field of mass communication with the instruments being installed in post offices . The era of mass personal communication had begun. Telegraph networks were expensive to build, but financing was readily available, especially from London bankers. By 1852, National systems were in operation in major countries: The New York and Mississippi Valley Printing Telegraph Company, for example,
3298-595: The administrative divisions of British governance on the Indian subcontinent . Collectively, they have been called British India . In one form or another, they existed between 1612 and 1947, conventionally divided into three historical periods: "British India" did not include the many princely states which continued to be ruled by Indian princes, though by the 19th century under British suzerainty —their defence, foreign relations, and communications relinquished to British authority and their internal rule closely monitored. At
3395-582: The alphabet, a message could be transmitted by connecting the wire terminals in turn to an electrostatic machine, and observing the deflection of pith balls at the far end. The writer has never been positively identified, but the letter was signed C.M. and posted from Renfrew leading to a Charles Marshall of Renfrew being suggested. Telegraphs employing electrostatic attraction were the basis of early experiments in electrical telegraphy in Europe, but were abandoned as being impractical and were never developed into
3492-546: The application of electricity to communications at a distance. All the known effects of electricity – such as sparks , electrostatic attraction , chemical changes , electric shocks , and later electromagnetism – were applied to the problems of detecting controlled transmissions of electricity at various distances. In 1753, an anonymous writer in the Scots Magazine suggested an electrostatic telegraph. Using one wire for each letter of
3589-466: The area and included over 77% of the population. In addition, there were Portuguese and French exclaves in India. Independence from British rule was achieved in 1947 with the formation of two nations, the Dominions of India and Pakistan , the latter including East Bengal , present-day Bangladesh . The term British India also applied to Burma for a shorter time period: beginning in 1824,
3686-553: The armature was intended to make marks on paper tape, but operators learned to interpret the clicks and it was more efficient to write down the message directly. In 1851, a conference in Vienna of countries in the German-Austrian Telegraph Union (which included many central European countries) adopted the Morse telegraph as the system for international communications. The international Morse code adopted
3783-420: The bar, creating a much more powerful electromagnet which could operate a telegraph through the high resistance of long telegraph wires. During his tenure at The Albany Academy from 1826 to 1832, Henry first demonstrated the theory of the 'magnetic telegraph' by ringing a bell through one-mile (1.6 km) of wire strung around the room in 1831. In 1835, Joseph Henry and Edward Davy independently invented
3880-403: The bubbles and could then record the transmitted message. This is in contrast to later telegraphs that used a single wire (with ground return). Hans Christian Ørsted discovered in 1820 that an electric current produces a magnetic field that will deflect a compass needle. In the same year Johann Schweigger invented the galvanometer , with a coil of wire around a compass, that could be used as
3977-697: The chemical and producing readable blue marks in Morse code. The speed of the printing telegraph was 16 and a half words per minute, but messages still required translation into English by live copyists. Chemical telegraphy came to an end in the US in 1851, when the Morse group defeated the Bain patent in the US District Court. For a brief period, starting with the New York–Boston line in 1848, some telegraph networks began to employ sound operators, who were trained to understand Morse code aurally. Gradually,
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4074-447: The communicator. Pressing another key would then release the pointer and the previous key, and re-connect the magneto to the line. These machines were very robust and simple to operate, and they stayed in use in Britain until well into the 20th century. The Morse system uses a single wire between offices. At the sending station, an operator taps on a switch called a telegraph key , spelling out text messages in Morse code . Originally,
4171-422: The company established its first factory at Hoogly in 1640. Almost a half-century later, after Mughal Emperor Aurengzeb forced the company out of Hooghly for its tax evasion, Job Charnock was tenant of three small villages, later renamed Calcutta , in 1686, making it the company's new headquarters. By the mid-18th century, the three principal trading settlements including factories and forts, were then called
4268-492: The defeat of Tipu Sultan in the Fourth Anglo-Mysore War more of his territory was annexed to the Madras Presidency. In 1801, Carnatic , which had been under the suzerainty of the company, began to be directly administered by it as a part of the Madras Presidency. By 1851, the East India Company's vast and growing holdings across the sub-continent were still grouped into just four main territories: By
4365-438: The dependent native states): During the partition of Bengal (1905–1912), a new lieutenant-governor's province of Eastern Bengal and Assam existed. In 1912, the partition was partially reversed, with the eastern and western halves of Bengal re-united and the province of Assam re-established; a new lieutenant-governor's province of Bihar and Orissa was also created. In addition, there were a few provinces that were administered by
4462-639: The early 20th century, the territory of British India extended as far as the frontiers of Persia in the west; Afghanistan in the northwest; Nepal in the north, Tibet in the northeast; and China, French Indochina and Siam in the east. It also included the Aden Province in the Arabian Peninsula . The East India Company , which was incorporated on 31 December 1600, established trade relations with Indian rulers in Masulipatam on
4559-591: The east coast by 24 October 1861, bringing an end to the Pony Express . France was slow to adopt the electrical telegraph, because of the extensive optical telegraph system built during the Napoleonic era . There was also serious concern that an electrical telegraph could be quickly put out of action by enemy saboteurs, something that was much more difficult to do with optical telegraphs which had no exposed hardware between stations. The Foy-Breguet telegraph
4656-698: The east coast in 1611 and Surat on the west coast in 1612. The company rented a small trading outpost in Madras in 1639. Bombay, which was ceded to the British Crown by Portugal as part of the wedding dowry of Catherine of Braganza in 1661, was in turn granted to the East India Company to be held in trust for the Crown. Meanwhile, in eastern India , after obtaining permission from the Mughal Emperor Shah Jahan to trade with Bengal,
4753-504: The electric current, he constructed a commutator of his own. As a result, he was able to make the distant needle move in the direction set by the commutator on the other end of the line. At first, Gauss and Weber used the telegraph to coordinate time, but soon they developed other signals and finally, their own alphabet. The alphabet was encoded in a binary code that was transmitted by positive or negative voltage pulses which were generated by means of moving an induction coil up and down over
4850-605: The electric telegraph, visual systems were used, including beacons , smoke signals , flag semaphore , and optical telegraphs for visual signals to communicate over distances of land. An auditory predecessor was West African talking drums . In the 19th century, Yoruba drummers used talking drums to mimic human tonal language to communicate complex messages – usually regarding news of birth, ceremonies, and military conflict – over 4–5 mile distances. From early studies of electricity , electrical phenomena were known to travel with great speed, and many experimenters worked on
4947-749: The expanded Bengal Presidency . During the period, 1773 to 1785, very little changed; the only exceptions were the addition of the dominions of the Raja of Banares to the western boundary of the Bengal Presidency, and the addition of Salsette Island to the Bombay Presidency . Portions of the Kingdom of Mysore were annexed to the Madras Presidency after the Third Anglo-Mysore War ended in 1792. Next, in 1799, after
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#17327571066455044-521: The first means of radiowave telecommunication, which he began in 1894. In the early 20th century, manual operation of telegraph machines was slowly replaced by teleprinter networks. Increasing use of the telephone pushed telegraphy into only a few specialist uses; its use by the general public dwindled to greetings for special occasions. The rise of the Internet and email in the 1990s largely made dedicated telegraphy networks obsolete. Prior to
5141-453: The line communicate with neighbouring boxes by telegraphic sounding of single-stroke bells and three-position needle telegraph instruments. In the 1840s, the electrical telegraph superseded optical telegraph systems such as semaphores, becoming the standard way to send urgent messages. By the latter half of the century, most developed nations had commercial telegraph networks with local telegraph offices in most cities and towns, allowing
5238-491: The magnetic needles inside a coil of wire connected to each pair of conductors. He successfully demonstrated it, showing the feasibility of the electromagnetic telegraph, but only within a lecture hall. In 1825, William Sturgeon invented the electromagnet , with a single winding of uninsulated wire on a piece of varnished iron , which increased the magnetic force produced by electric current. Joseph Henry improved it in 1828 by placing several windings of insulated wire around
5335-477: The mercury dipping electrical relay , in which a magnetic needle is dipped into a pot of mercury when an electric current passes through the surrounding coil. In 1837, Davy invented the much more practical metallic make-and-break relay which became the relay of choice in telegraph systems and a key component for periodically renewing weak signals. Davy demonstrated his telegraph system in Regent's Park in 1837 and
5432-432: The most widely used of its type was the Cooke and Wheatstone telegraph , invented in 1837. The second category are armature systems, in which the current activates a telegraph sounder that makes a click; communication on this type of system relies on sending clicks in coded rhythmic patterns. The archetype of this category was the Morse system and the code associated with it, both invented by Samuel Morse in 1838. In 1865,
5529-413: The new Indian constitution was adopted, the provinces in India were replaced by redrawn states and union territories. Pakistan, however, retained its five provinces, one of which, East Bengal , was renamed East Pakistan in 1956 and became the independent nation of Bangladesh in 1971. Electrical telegraph Electrical telegraphy is a point-to-point text messaging system, primarily used from
5626-422: The number of characters it was required to code. In May 1837 they patented their system. The patent recommended five needles, which coded twenty of the alphabet's 26 letters. Samuel Morse independently developed and patented a recording electric telegraph in 1837. Morse's assistant Alfred Vail developed an instrument that was called the register for recording the received messages. It embossed dots and dashes on
5723-414: The ones that became widespread fit into two broad categories. First are the needle telegraphs, in which electric current sent down the telegraph line produces electromagnetic force to move a needle-shaped pointer into position over a printed list. Early needle telegraph models used multiple needles, thus requiring multiple wires to be installed between stations. The first commercial needle telegraph system and
5820-617: The paramount political and military power in south Asia, its territory held in trust for the British Crown . Company rule in Bengal (after 1793) was terminated by the Government of India Act 1858 , following the events of the Bengal Rebellion of 1857 . Henceforth known as British India, it was thereafter directly ruled as a colonial possession of the United Kingdom , and India was officially known after 1876 as
5917-415: The pointer reached the position of the depressed key, it would stop and the magneto would be disconnected from the line. The communicator's pointer was geared to the magneto mechanism. The indicator's pointer was moved by a polarised electromagnet whose armature was coupled to it through an escapement . Thus the alternating line voltage moved the indicator's pointer on to the position of the depressed key on
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#17327571066456014-410: The pointers on the dials at both ends set to the start position. The transmitting operator would then press down the key corresponding to the letter to be transmitted. In the base of the communicator was a magneto actuated by a handle on the front. This would be turned to apply an alternating voltage to the line. Each half cycle of the current would advance the pointers at both ends by one position. When
6111-453: The possibilities of rapid global communication in Descriptions of an Electrical Telegraph and of some other Electrical Apparatus was the first published work on electric telegraphy and even described the risk of signal retardation due to induction. Elements of Ronalds' design were utilised in the subsequent commercialisation of the telegraph over 20 years later. The Schilling telegraph , invented by Baron Schilling von Canstatt in 1832,
6208-404: The powers of 'superintendence, direction and control' over the British provincial administrations in South Asia previously exercised by the Board of Control. Improved communications with South Asia – the overland and submarine telegraph cables (1868–70), and the opening of the Suez Canal (1869) – rendered this control, exercised through the Viceroy and provincial Governors covering large areas in
6305-422: The printer decoded this tape to produce alphanumeric characters on plain paper. This was the origin of the Creed High Speed Automatic Printing System, which could run at an unprecedented 200 words per minute. His system was adopted by the Daily Mail for daily transmission of the newspaper contents. With the invention of the teletypewriter , telegraphic encoding became fully automated. Early teletypewriters used
6402-497: The public to send messages (called telegrams ) addressed to any person in the country, for a fee. Beginning in 1850, submarine telegraph cables allowed for the first rapid communication between people on different continents. The telegraph's nearly-instant transmission of messages across continents – and between continents – had widespread social and economic impacts. The electric telegraph led to Guglielmo Marconi 's invention of wireless telegraphy ,
6499-468: The re-organisation of 1858. Throughout most of these changes the basic structure of Company organisation in East India House in the City of London remained largely unaltered, comprising a large body of proprietors or shareholders and an elected Court of Directors, headed by a chairman and deputy chairman who, aided by permanent officials, were responsible for the daily conduct of Company business. The Board of Control maintained its separate office close to
6596-428: The receiving end. The system was very stable and accurate and became accepted around the world. The next improvement was the Baudot code of 1874. French engineer Émile Baudot patented a printing telegraph in which the signals were translated automatically into typographic characters. Each character was assigned a five-bit code, mechanically interpreted from the state of five on/off switches. Operators had to maintain
6693-526: The regions of Asia, Africa and the Middle East, more effective in the last quarter of the nineteenth century. It was only with the constitutional reforms initiated during the First World War, and carried forward by the India Acts of 1919 and 1935 , that there came about a significant relaxation of India Office supervision over the Government of British India , and with it, in South Asia, a gradual devolution of authority to legislative bodies and local governments. The same administrative reforms also led in 1937 to
6790-450: The return current and one for a signal bell. When at the starting station the operator pressed a key, the corresponding pointer was deflected at the receiving station. Different positions of black and white flags on different disks gave combinations which corresponded to the letters or numbers. Pavel Schilling subsequently improved its apparatus by reducing the number of connecting wires from eight to two. On 21 October 1832, Schilling managed
6887-421: The same year, instead of a voltaic pile , Gauss used an induction pulse, enabling him to transmit seven letters a minute instead of two. The inventors and university did not have the funds to develop the telegraph on their own, but they received funding from Alexander von Humboldt . Carl August Steinheil in Munich was able to build a telegraph network within the city in 1835–1836. In 1838, Steinheil installed
6984-554: The second half of the 18th century from a mainly commercial body with scattered Asian trading interests into a major territorial power in South Asia with its headquarters in Bengal , present day state of West Bengal of India and Bangladesh . The political implications of this development eventually caused the British government in 1784 to institute standing Commissioners (the Board of Control ) in London to exercise supervision over
7081-426: The sending rate. There were many experiments with moving pointers, and various electrical encodings. However, most systems were too complicated and unreliable. A successful expedient to reduce the cost per message was the development of telegraphese . The first system that did not require skilled technicians to operate was Charles Wheatstone's ABC system in 1840 in which the letters of the alphabet were arranged around
7178-469: The separation of Burma from rest of South Asia and the creation in London of the Burma Office , separate from the India Office though sharing the same Secretary of State and located in the same building. With the gradual events and establishments of sovereign independent nations and the final grant of independence to present-day India and Pakistan in 1947, and to present-day Myanmar in 1948, both
7275-637: The state of Gujarat ), and this became the company's first headquarters town. It was followed in 1611 by a permanent factory at Machilipatnam on the Coromandel Coast , and in 1612 the company joined other already established European trading companies in Bengal in trade. However, the power of the Mughal Empire declined from 1707, first at the hands of the Marathas and later due to invasion from Persia (1739) and Afghanistan (1761); after
7372-696: The status of Indian emigrants to the West Indies, south and east Africa, and Fiji . The India Office had its offices in the Foreign and Commonwealth Office Main Building in Whitehall . The India Office Records are the repository of the archives of the East India Company (1600–1858), the Board of Control or Board of Commissioners for the Affairs of British India (1784–1858), the India Office (1858–1947),
7469-647: The time of Indian Independence, in 1947 , there were officially 565 princely states, a few being very large although most were very small. They comprised a quarter of the population of the British Raj and two fifths of its land area, with the provinces comprising the remainders. In 1608, the Mughal Emperor Farrukhsiyar issued a royal farman to the East India Company to establish a small trading settlement at Surat (now in
7566-500: The time of the Indian Rebellion of 1857 , and the end of Company rule, the developments could be summarised as follows: The British Raj began with the idea of the presidencies as the centres of government. Until 1834, when a General Legislative Council was formed, each presidency under its governor and council was empowered to enact a code of so-called 'regulations' for its government. Therefore, any territory or province that
7663-433: The two clicks. The message was then written out in long-hand. Royal Earl House developed and patented a letter-printing telegraph system in 1846 which employed an alphabetic keyboard for the transmitter and automatically printed the letters on paper at the receiver, and followed this up with a steam-powered version in 1852. Advocates of printing telegraphy said it would eliminate Morse operators' errors. The House machine
7760-416: The use of sound operators eliminated the need for telegraph receivers to include register and tape. Instead, the receiving instrument was developed into a "sounder", an electromagnet that was energized by a current and attracted a small iron lever. When the sounding key was opened or closed, the sounder lever struck an anvil. The Morse operator distinguished a dot and a dash by the short or long interval between
7857-410: Was a five-needle, six-wire system, and had the major advantage of displaying the letter being sent so operators did not need to learn a code. The insulation failed on the underground cables between Paddington and West Drayton, and when the line was extended to Slough in 1843, the system was converted to a one-needle, two-wire configuration with uninsulated wires on poles. The cost of installing wires
7954-482: Was added by conquest or treaty to a presidency came under the existing regulations of the corresponding presidency. However, in the case of provinces that were acquired but were not annexed to any of the three presidencies, their official staff could be provided as the governor-general pleased, and was not governed by the existing regulations of the Bengal, Madras, or Bombay presidencies. Such provinces became known as 'non-regulation provinces' and up to 1833 no provision for
8051-415: Was an early needle telegraph . It had a transmitting device that consisted of a keyboard with 16 black-and-white keys. These served for switching the electric current. The receiving instrument consisted of six galvanometers with magnetic needles, suspended from silk threads . The two stations of Schilling's telegraph were connected by eight wires; six were connected with the galvanometers, one served for
8148-435: Was approved for a telegraph between the imperial palace at Peterhof and the naval base at Kronstadt . However, the project was cancelled following Schilling's death in 1837. Schilling was also one of the first to put into practice the idea of the binary system of signal transmission. His work was taken over and developed by Moritz von Jacobi who invented telegraph equipment that was used by Tsar Alexander III to connect
8245-513: Was assisted by a statutory body of advisors, the Council of India, and headed a staff of civil servants organised into a system of departments largely taken over from the East India Company and Board of Control establishments, and housed in a new India Office building in Whitehall. The Secretary of State for India inherited all the executive functions previously carried out by the Company, and all
8342-533: Was considerably modified from the original American Morse code , and was based on a code used on Hamburg railways ( Gerke , 1848). A common code was a necessary step to allow direct telegraph connection between countries. With different codes, additional operators were required to translate and retransmit the message. In 1865, a conference in Paris adopted Gerke's code as the International Morse code and
8439-658: Was created in 1852 in Rochester, New York and eventually became the Western Union Telegraph Company . Although many countries had telegraph networks, there was no worldwide interconnection. Message by post was still the primary means of communication to countries outside Europe. Telegraphy was introduced in Central Asia during the 1870s. A continuing goal in telegraphy was to reduce the cost per message by reducing hand-work, or increasing
8536-578: Was established in 1600 as a joint-stock company of English merchants who received, by a series of charters, exclusive rights to English trade with the " Indies ", defined as the lands lying between the Cape of Good Hope and the Straits of Magellan ; the term "India" had been derived from the name of the Indus River , long important to commerce and civilisation in the region. The Company soon established
8633-523: Was eventually adopted. This was a two-needle system using two signal wires but displayed in a uniquely different way to other needle telegraphs. The needles made symbols similar to the Chappe optical system symbols, making it more familiar to the telegraph operators. The optical system was decommissioned starting in 1846, but not completely until 1855. In that year the Foy-Breguet system was replaced with
8730-669: Was far less limited than the momentary discharge of an electrostatic machine , which with Leyden jars were the only previously known human-made sources of electricity. Another very early experiment in electrical telegraphy was an "electrochemical telegraph" created by the German physician , anatomist and inventor Samuel Thomas von Sömmering in 1809, based on an earlier 1804 design by Spanish polymath and scientist Francisco Salva Campillo . Both their designs employed multiple wires (up to 35) to represent almost all Latin letters and numerals. Thus, messages could be conveyed electrically up to
8827-484: Was granted a patent on 4 July 1838. Davy also invented a printing telegraph which used the electric current from the telegraph signal to mark a ribbon of calico infused with potassium iodide and calcium hypochlorite . The first working telegraph was built by the English inventor Francis Ronalds in 1816 and used static electricity. At the family home on Hammersmith Mall , he set up a complete subterranean system in
8924-522: Was henceforth the international standard. The US, however, continued to use American Morse code internally for some time, hence international messages required retransmission in both directions. In the United States, the Morse/Vail telegraph was quickly deployed in the two decades following the first demonstration in 1844. The overland telegraph connected the west coast of the continent to
9021-427: Was implemented in Germany during the 1930s as a network used to communicate within the government. At the rate of 45.45 (±0.5%) baud – considered speedy at the time – up to 25 telex channels could share a single long-distance telephone channel by using voice frequency telegraphy multiplexing , making telex the least expensive method of reliable long-distance communication. Automatic teleprinter exchange service
9118-539: Was installed on the Euston to Camden Town section of Robert Stephenson 's London and Birmingham Railway in 1837 for signalling rope-hauling of locomotives. It was rejected in favour of pneumatic whistles. Cooke and Wheatstone had their first commercial success with a system installed on the Great Western Railway over the 13 miles (21 km) from Paddington station to West Drayton in 1838. This
9215-469: Was the last great barrier to full automation. Large telegraphy providers began to develop systems that used telephone-like rotary dialling to connect teletypewriters. These resulting systems were called "Telex" (TELegraph EXchange). Telex machines first performed rotary-telephone-style pulse dialling for circuit switching , and then sent data by ITA2 . This "type A" Telex routing functionally automated message routing. The first wide-coverage Telex network
9312-426: Was ultimately more economically significant than the cost of training operators. The one-needle telegraph proved highly successful on British railways, and 15,000 sets were in use at the end of the nineteenth century; some remained in service in the 1930s. The Electric Telegraph Company , the world's first public telegraphy company, was formed in 1845 by financier John Lewis Ricardo and Cooke. Wheatstone developed
9409-533: Was used on four main American telegraph lines by 1852. The speed of the House machine was announced as 2600 words an hour. David Edward Hughes invented the printing telegraph in 1855; it used a keyboard of 26 keys for the alphabet and a spinning type wheel that determined the letter being transmitted by the length of time that had elapsed since the previous transmission. The system allowed for automatic recording on
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