The British and Irish Magnetic Telegraph Company (also called the Magnetic Telegraph Company or the Magnetic) was a provider of telegraph services and infrastructure. It was founded in 1850 by John Brett. The Magnetic became the principal competitor to the largest telegraph company in the United Kingdom, Electric Telegraph Company (the Electric), and became the leading company in Ireland. The two companies dominated the market until the telegraph was nationalised in 1870.
The Magnetic's telegraph system differed from other telegraph companies. They favoured underground cables rather than wires suspended on poles. This system was problematic because of the limitations of insulation materials available at the time, but the Magnetic was constrained by the wayleaves owned by other companies on better routes. They were also unique in not using batteries which were required on other systems. Instead the operator generated the necessary power electromagnetically. The coded message was sent by the operator moving handles which moved coils past a permanent magnet thus generating telegraph pulses.
The Magnetic laid the first submarine telegraph cable to Ireland and developed an extensive telegraph network there. They had a close connection with the Submarine Telegraph Company and for a while had a monopoly on underwater, and hence, international communication. They also closely cooperated with the London District Telegraph Company who provided a cheap telegram service in London. The Magnetic was amongst the first to employ women as telegraph operators.
Company history
The English and Irish Magnetic Telegraph Company (which was also known as the Magnetic) was established by John Brett in 1850, and incorporated by the (14 & 15 Vict. c. cxviii). John Pender also had an interestHills, p. 294 and Charles Tilston Bright was the chief engineer.Huurdeman, p. 129 The company's initial objective was to connect Britain with Ireland following the success of the Submarine Telegraph Company in connecting England with France with the first ocean cable to be put in service.Smith, p. 21 The British and Irish Magnetic Telegraph Company was formed in 1857Hills, p. 294, citing Barty-King, p. 11, says the date was 1856. in Liverpool through a merger of the English and Irish Magnetic Telegraph Company and the British Telegraph Company (originally known as the British Electric Telegraph Company).Roberts, ch. 5Beauchamp, p. 77
The main competitor of the Magnetic was the Electric Telegraph Company, later, after a merger, the Electric and International Telegraph Company (the Electric for short) founded by William Fothergill Cooke. By the end of the 1850s, the Electric and Magnetic companies were virtually a cartel in Britain.Hills, p. 22 In 1859, the Magnetic moved its headquarters from Liverpool to Threadneedle Street in London, in recognition that they were no longer a regional company. They shared these premises with the Submarine Telegraph Company.Kieve, p. 55
The company had a close relationship with the Submarine Telegraph Company who laid the first cable to France and many subsequent submarine telegraph cables to Europe. From about 1857, the Magnetic had an agreement with them that all their submarine cables were to be used only with the landlines of the Magnetic.Bright & Bright, pp. 73–74 The Magnetic also had control of the first cable to Ireland. This control of international traffic gave them a significant advantage in the domestic market.Hills, pp. 62–63
Another company with a close relationship was the London District Telegraph Company (the District), formed in 1859. The District provided a cheap telegram service within London only. They shared headquarters and directors with the Magnetic. The Magnetic installed their lines and trained their staff in return for the District passing on traffic for the Magnetic outside London.Kieve, pp. 56–59
The Magnetic founded its own press agency. It promoted its agency by offering lower rates to customers who used it than the rates for customers who wanted connections to rival agencies.Hills, p. 66 In 1870, The Magnetic, along with several other telegraph companies including the Electric, were nationalised under the Telegraph Act 1868 and the company wound up.
Telegraph system
The telegraph system of the Magnetic was somewhat different from other companies. This was largely because the Electric held the patents for the Cooke and Wheatstone telegraph.Mercer, p. 8 The name of the company refers to the fact that their telegraph system did not require batteries. Power for the transmissions was generated electromagnetically.Beauchamp, p. 77 The system, invented by William Thomas Henley and George Foster in 1848,Shaffner, vol. 1, p. 201; vol. 2, p. 369 was a needle telegraph and came in double-needle or single-needle versions. The machine was worked by the operator pushing pedal keys. An armature connected to the key moved two coils through the magnetic field of a permanent magnet. This generated a pulse of current which caused a deflection of the corresponding needle at both ends of the line. The needles were magnetised and so arranged that they were held in position by the permanent magnet after deflection. The operator was able to apply a current in the reverse direction so that there were two positions that the needle could be held in. The code consisted of various combinations of successive needle deflections to the left or right.
In later years, the Magnetic used other telegraph systems. After the takeover of the British Telegraph Company, the Magnetic acquired the rights to the needle telegraph instrument of that company's founder, Henry Highton. This instrument was the cheapest of any of the instruments produced at the time, but like all needle telegraphs, was slower than audible systems due to the operator having to continually look up at the instrument while transcribing the message. Some companies moved to needle instruments with endstops making two different sounds when the needle struck them (an innovation of Cooke and Wheatstone in 1845)Bowers, pp. 150–151 to solve this problem. The Magnetic instead used an 1854 invention of Charles Tilston Bright on its more busy lines. This was the acoustic telegraph (not to be confused with the acoustic telegraphy method of multiplexing) known as Bright's bells. In this system, two bells placed either side of the operator are rung with a hammer made to strike the bell by a solenoid driven by a relay. They are so arranged that the right and left bells are struck according to whether a positive or negative pulse of current is received on the telegraph line. Such bells make a much louder sound than the clicking of a needle.
The Magnetic found a method of overcoming the problem of dispersion on long submarine telegraph cables. The poorly understood phenomenon at that time was called retardation because different parts of a telegraph pulse travels at different speeds on the cable. Part of the pulse appears to be 'retarded', arriving later than the rest at the destination. This 'smearing out' of the pulse interferes with neighbouring pulses making the transmission unintelligible unless messages are sent at a much slower speed.Hagen, pp. 300–311 The Magnetic found that if they generated pulses of opposite polarity to the main pulse and slightly delayed from it, the retarded signal was sufficiently cancelled to make the line usable at normal operator speeds.Bright, p. 26 This system was developed theoretically by William Thomson and demonstrated to work by Fleeming Jenkin.Cookson, p. 44
The Magnetic played a part in solving the dispersion problem on the transatlantic telegraph cable of the Atlantic Telegraph Company. Magnetic were strongly connected with this project; Bright promoted it and shares were sold largely to Magnetic shareholders, including Pender.Bright, pp. 31–32 Dispersion on the 1858 Atlantic cable had been so severe that it was almost unusable: it was destroyed by misguided attempts to solve the problem using high voltage.Hunt, p. 64 For the 1866 cable, it was planned to use the Magnetic's opposite polarity pulse method, but doubts were expressed over whether it would work over such a great distance. Magnetic connected together various of their British underground cables to provide a total line length of over for proof of principle testing.Bright, pp. 25–26 Dispersion was not eliminated from submarine cables until loading coils started to be used on them from 1906 onwards.Newell, p. 478
Telegraph network First connection to Ireland The company's first objective, in 1852, was to provide the first telegraph service between Great Britain and Ireland by means of a submarine cable between Portpatrick in Scotland and Donaghadee in Ireland.Smith, p. 21 The cable core was gutta-percha insulated copper wire made by the Gutta Percha Company. This was armoured with iron wires by R. S. Newall and Company at their works in Sunderland. Before this could be achieved, two other companies attempted to be the first to make the connection across the Irish Sea.
Despite having the contract to lay the Magnetic company's cable, Newall also secretly constructed another cable at their Gateshead works with the intention of being first to get a telegraph connection to Ireland. This Newall cable was only lightly armoured with an open 'bird-cage' structure of the iron wires, there was no cushioning layer between the core and the armour, and the insulation was not properly tested before laying because of the great hurry to get the job done before Magnetic was ready. This cable was laid from Holyhead in Wales to Howth, near Dublin with William Henry Woodhouse as engineer, and thence to Dublin via underground cable along the railway line. Laying of the submarine cable was completed on 1 June 1852 by the City of Dublin Steam Packet Company's chartered paddle steamer Britannia of 1825, usually used as a cattle ship, and with assistance from the Admiralty with HMS Prospero.Haigh, p. 36, describes Britannia as a 254 ton barque with an added steam engine, built in 1827 at Yarmouth; no source to support this has been found. However, the cable failed a few days later and was never put into service.Huurdeman, p. 129, credits the laying of this cable to the Magnetic Company.
In July of the same year, the Electric Telegraph Company of Ireland tried using an insulated cable inside a hemp rope on the Portpatrick to Donaghadee route. This construction proved problematic because it floated (the Submarine Telegraph Company's Dover to Calais cable in 1850 was also lightweight, having no protection at all other than the insulation, but they had taken the precaution of adding periodic lead weights to sink the cable).Smith, pp. 7–8 It was laid from a schooner Reliance, assisted by tugs. The strong sea currents in the Irish Sea, much deeper than the English Channel, dragged the cable into a large bow and there was consequently insufficient length to land it. The attempt was abandoned.Smith, p. 22