Marconi's Wireless Telegraph Wire Detector, clockwork driven. Size 12" high x 20" x 8". No 749 (SB).

Marconi's Wireless Telegraph Company
1897 The company was registered in July as the Wireless Telegraph and Signal Co on the 20th July to acquire patent rights from Guglielmo Marconi.
1898 Manufacturing premises were needed for the new organisation. In December, the first wireless factory in the world was set up in an old silk factory in Chelmsford
1900 The company's name was changed to Marconi's Wireless Telegraph Company. Its maritime rights were sold to the Marconi International Marine Communication Co, and the company held a controlling interest in subsidiary companies formed in the United States and Canada.
c.1907 Manufacturing electrical accessories for vehicles
1913 Set up the Betulander Automatic Telephone Company which later became the Relay Automatic Telephone Co.
1915 Produced the Aircraft Telephone Transmitter
1919 Marconi-Osram Valve Co was formed as company owned jointly by GEC and Marconi's Wireless Telegraph Co
1920 January. Physical and Optical Societies Exhibition. Exhibited wireless telegraphy
1921 the Company was permitted to broadcast the first regular public entertainment programme from a low-power transmitter at Writtle, near Chelmsford, and later from the first London station at Marconi House.
1922 The first regular broad­casts in the United Kingdom were made from the experimental station 2MT at Writtle.
1922 The "Otophone" was developed as an aid for the deaf
1923 Marconi sold its interests in domestic radios and rights to use the Marconi name to Marconiphone Co
1924 Following the development of short wave radio telegraphy, the Marconi Wireless Telegraph Company entered an agreement with the British Government to provide stations for the Imperial Wireless Chain in England, Australia, Canada, India and South Africa
1929 Public company formed: Cables and Wireless Ltd. This was the merger company which held the interests in Marconi's Wireless Telegraph Co (and others) by a complicated exchange of shares with the merger company; the operations of Marconi's Wireless Telegraph Co other than its communication assets remained with the company.
1929 Gramophone Co acquired Marconiphone Co as well as Marconi's share in M-O Valve
1930 Research and development was focussed on broadcasting and radio reception including aircraft and short-wave radio communications (the development and production of receivers had been disposed of with the Marconiphone business)
1934 Marconi's television interests were merged with those of EMI Ltd in a company called Marconi-EMI Television Co in which Marconi's was responsible for all aspect of transmission
1934 Name of Cables and Wireless Ltd was changed to Cable and Wireless Limited
1936 The Marconi-EMI system was adopted by the BBC for its public high definition television service - the first in the world.
1937 Manufacturers of wireless for aircraft and aerodromes
1937 The Company acquired the expertise to fulfil Government orders for transmitter aerials for CH (Chain Home) stations, Britain's first air defence radar network.
1937 Guglielmo Marconi died in the early hours of 20 July, aged 63, and his body was laid to rest in the mausoleum in the grounds of Villa Griffone. In a fitting tribute, wireless stations throughout the world fell silent for 2 minutes and the ether was as silent as it had been before Marconi.
1946 The holding of Cable and Wireless in Marconi’s Wireless Telegraph Co was acquired by English Electric Co
1958 Business in navigation, radar, radio and television; Marconi Instruments Ltd subsidiary offered more than 100 different instruments and was developing in nuclear power instrumentation, guided weapons testing and multi-channel radio link equipment
1961 Marconi's Wireless Telegraph Co was a subsidiary of English Electric Co. Employed 8,750 persons. Another subsidiary was Marconi Instruments and, as an associated company, Marconi International Marine Co Ltd
1963 Marconi's Wireless Telegraph Co was renamed the Marconi Company
1965 Restructuring of the Marconi Company to focus on growth markets. The Company was split into three main groupings: Electronics, Communication and Microelectronics
1968 English Electric Co acquired by GEC. As a result, the various Marconi units were incorporated in different parts of the new group most particularly: GEC-Marconi Electronics and Marconi-Elliott Computer Systems (which incorporated parts of Elliott Space and Weapon Automation, Marconi and GEC-Elliot Automation)[31].
1987 Renamed GEC-Marconi.
In 1998 the defence-related parts of the group became Marconi Electronic Systems (MES).
1999 MES became part of BAE Systems.
Note:
The Marconi Company should not be confused with the Marconi Corporation which was created in 1999, by the renaming of The General Electric Company (GEC), minus the Marconi Electronic Systems business.

Sourced at https://www.gracesguide.co.uk/Marconi%27s_Wireless_Telegraph_Co, accessed 27/07/2021

Marconi Wireless Telegraph Co

England, United Kingdom, Europe

B1227 Wireless telegraph wire detector, wood / glass / metal, Marconi Wireless Telegraph Co, England, after 1898

POWERHOUSE COLLECTION

Clockwork driven wireless telegraph wire detector

Object No. B1227

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