A. C. Cossor: Difference between revisions
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[[image:Cossor oscilloscope CRT type 89J (CV2750).jpg|thumb| Cossor oscilloscope cathode ray tube type 89J (CV2750)]] | |||
[[image:Im19240621AWE-Cossor.jpg|thumb| June 1924. ]] | [[image:Im19240621AWE-Cossor.jpg|thumb| June 1924. ]] | ||
[[image:Im1929BIF-Cossor.jpg|thumb| 1929 | [[image:Im1929BIF-Cossor.jpg|thumb| 1929. ]] | ||
[[Image:Im20110714Amb-Cossor-MM.jpg|thumb| Cossor Melody Maker three-valve set. Exhibit at [[Amberley Working Museum]]. ]] | [[Image:Im20110714Amb-Cossor-MM.jpg|thumb| Cossor Melody Maker three-valve set. Exhibit at [[Amberley Working Museum]]. ]] | ||
[[Image:Im20110714Amb-i085.jpg|thumb| Early 1930s. Cossor Melody Maker Model 357. Exhibit at [[Amberley Working Museum]]. ]] | [[Image:Im20110714Amb-i085.jpg|thumb| Early 1930s. Cossor Melody Maker Model 357. Exhibit at [[Amberley Working Museum]]. ]] | ||
[[Image:ImWT19330902-Cossor.jpg|thumb| September 1933.]] | |||
[[Image:Im20101014BCM-Cossor.jpg|thumb| ]] | [[Image:Im20101014BCM-Cossor.jpg|thumb| ]] | ||
[[Image:Im20110714Amb-i100.jpg|thumb| 1936. Model A3764. Exhibit at [[Amberley Working Museum]]. ]] | [[Image:Im20110714Amb-i100.jpg|thumb| 1936. Model A3764. Exhibit at [[Amberley Working Museum]]. ]] | ||
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[[image:Im195011AE-Cossor.jpg|thumb| November 1950.]] | [[image:Im195011AE-Cossor.jpg|thumb| November 1950.]] | ||
[[Image:ImFB1951b-Cossor.jpg|thumb| 1951.]] | |||
[[image:Im195112WW-Coss.jpg|thumb| December 1951. Oscillographs. Instrument Division. ]] | [[image:Im195112WW-Coss.jpg|thumb| December 1951. Oscillographs. Instrument Division. ]] | ||
[[image:Im195202AE-Cossor.jpg|thumb| February 1952.]] | |||
[[image:Im195204AE-Cossor.jpg|thumb| April 1952.]] | |||
[[image:195206AE-Cossor.jpg|thumb| June 1952.]] | |||
[[Image:Im1953RS-Cossor1.jpg|thumb| September 1953. LHS. ]] | |||
[[Image:Im1953RS-Cossor2.jpg|thumb| September 1953. RHS. ]] | |||
[[Image:Im195309ERT-Cossor.jpg|thumb| September 1953. ]] | [[Image:Im195309ERT-Cossor.jpg|thumb| September 1953. ]] | ||
[[image:Cossor 1955WB.jpg|thumb| 1955. ]] | |||
[[Image:Im1955RS-Cossor1.jpg|thumb|1955. LHS page. Models 937, 938F, 939F and 935. ]] | [[Image:Im1955RS-Cossor1.jpg|thumb|1955. LHS page. Models 937, 938F, 939F and 935. ]] | ||
[[Image:Im1955RS-Cossor2.jpg|thumb|1955. RHS page. Models 522, 523, 534, 520 and 501. ]] | [[Image:Im1955RS-Cossor2.jpg|thumb|1955. RHS page. Models 522, 523, 534, 520 and 501. ]] | ||
of Cossor House, Highbury Grove, London, N5. Telephone: North 4340. Cables: "Amplifiers, London". | of Cossor House, Highbury Grove, London, N5. Telephone: North 4340. Cables: "Amplifiers, London". | ||
1859 | 1859 [[Alfred Charles Cossor]] established a company in Clerkenwell, to manufacture scientific glassware. | ||
1875 | 1875 Alfred's eldest son, also called [[Alfred Charles Cossor (1861-1922)|Alfred Charles Cossor]], joined the company | ||
1885 The younger son [[Frank Cossor]] joined the company, | 1885 The younger son [[Frank Cossor]] joined the company, presumably [[Accoson|Alfred Cossor and Sons]]. | ||
1902 The company produced the first British made ''Braun'' tube (cathode ray tube) | 1902 The company produced the first British made ''Braun'' tube (cathode ray tube) | ||
| Line 37: | Line 44: | ||
1904 Experimental valves were produced by '''Cossor''' for [[Ambrose Fleming]]. | 1904 Experimental valves were produced by '''Cossor''' for [[Ambrose Fleming]]. | ||
c.1907 [[William Richard Bullimore]] joined the company.<ref> The Times, Jul 31, 1937</ref> | |||
1910 '''A. C. Cossor and Co''' exhibited at the Physical Society's Exhibition<ref>The Times, Dec 12, 1910</ref> | 1908 '''A. C. Cossor''' left his father's business to found his own company as a private company making scientific and electrical instruments. The expertise in the manufacture of electrical glassware, such as early cathode ray tubes and X-Ray tubes, allowed the company to diversify later into electronics. | ||
1909 Frank eventually took over the running of the scientific glassware company which continues to this day as [[Accoson]], a manufacturer of sphygmomanometers. | |||
1910 Alfred Charles Cossor died. At some point [[William Richard Bullimore|W. R. Bullimore]] gained a controlling interest in the company; he went on to develop the first thermionic valves that Cossor marketed, incorporating market leading technology<ref>The Times, Jul 31, 1937</ref> | |||
1910 '''A. C. Cossor and Co''' exhibited at the Physical Society's Exhibition.<ref>The Times, Dec 12, 1910</ref> | |||
WWI During the first world war the company was one of the first to produce valves in quantity for the war effort including large numbers of type R valves, a generic valve design produced by several other companies. | WWI During the first world war the company was one of the first to produce valves in quantity for the war effort including large numbers of type R valves, a generic valve design produced by several other companies. | ||
1918 The company moved to Highbury, to a factory called the Aberdeen Works. The office building which was called Cossor House, is still standing and | 1918 The company moved to Highbury, to a factory called the Aberdeen Works. The office building which was called Cossor House, is still standing and later formed part of London Metropolitan University campus. Many of the buildings interior art deco furnishings remain untouched and later occupants included the London Screen Academy. | ||
Post-WWI the company produced its first radio sets in kit form, given the name ''Melody Maker''. | |||
1921 Scientific instrument maker<ref>U.K., City and County Directories</ref> | |||
1924 '''Cossor''' introduced the first British valves to incorporate an oxide coated filament. | 1924 '''Cossor''' introduced the first British valves to incorporate an oxide coated filament. | ||
1926 Ceased manufacture of filament lamps<ref>http://www.competition-commission.org.uk/rep_pub/reports/1950_1959/fulltext/020c02.pdf</ref>. | 1926 Ceased manufacture of filament lamps<ref>[http://www.competition-commission.org.uk/rep_pub/reports/1950_1959/fulltext/020c02.pdf]</ref>. | ||
1927 Company launched its famous "Melody | 1927 Company launched its famous "Melody Makers" radio sets - these constructor kits did much to popularise radio. | ||
1929 Advert for Radio Receiving Valves. Also as makers of H. T. Eliminators; Trickle Chargers; L. F. Transformers; Loud Speakers; Motor Bulbs. Tuning Coils; Valve Holders; and complete kits of nparts for the construction of the "Cossor Melody Maker". Screened Grid Sets. Electric Lamps and Signs. (Wireless Section - Stand Nos. MM.31, MM.32 and MM.33) | 1929 Advert for Radio Receiving Valves. Also as makers of H. T. Eliminators; Trickle Chargers; L. F. Transformers; Loud Speakers; Motor Bulbs. Tuning Coils; Valve Holders; and complete kits of nparts for the construction of the "Cossor Melody Maker". Screened Grid Sets. Electric Lamps and Signs. (Wireless Section - Stand Nos. MM.31, MM.32 and MM.33) <ref>[[1929 British Industries Fair]] Advert 228 </ref> | ||
1930 First British RF pentode valve was made by '''Cossor'''. | 1930 First British RF pentode valve was made by '''Cossor'''. | ||
1932 Company introduced its first cathode ray oscilloscope. | 1932 Company introduced its first cathode ray oscilloscope. | ||
By 1933 '''A. C. Cossor Ltd''' was making electrical condensers and miscellaneous stamping for wireless apparatus at the Kelvin Works , Kelvin Road, Highbury Grove, N.5. | |||
1935 '''Cossor''' cathode ray tube was used in the Daventry Experiment for radar research, conducted using the BBC transmitter. | 1935 '''Cossor''' cathode ray tube was used in the Daventry Experiment for radar research, conducted using the BBC transmitter. | ||
| Line 67: | Line 84: | ||
Cossor remained pre-eminent in the development of the cathode ray oscilloscope with the introduction of a dual beam version of the instrument. | Cossor remained pre-eminent in the development of the cathode ray oscilloscope with the introduction of a dual beam version of the instrument. | ||
1937 Manufacturers of wireless valves and apparatus. | 1937 Manufacturers of wireless valves and apparatus. <ref>[[1937 The Aeroplane Directory of the Aviation and Allied Industries]]</ref> | ||
1938 On the death of Mr Bullimore, the managing director and proprietor, the company was acquired by [[Ismay Industries]]<ref>The Times, Jan 07, 1938</ref> which would be funded by public flotation of the company<ref>The Times, Feb 16, 1938</ref> | |||
1938 | 1938 '''A. C. Cossor Ltd''' became a public company.<ref> The Times, Mar 02, 1938</ref> | ||
1938 | 1938 John Ismay resigned his directorship; J. H. Thomas was the sold managing director<ref>The Times Oct. 21, 1938</ref> | ||
1938 | 1938 '''A. C. Cossor''' purchased [[Sterling Batteries]] Ltd<ref>The Times, Nov 12, 1938</ref> from Ismay. | ||
1939 The company switched to war production. | 1939 The company switched to war production. | ||
| Line 79: | Line 98: | ||
By 1940 [[A. C. Cossor]] had purchased the whole of the share capital of [[Sterling Cable Co]]<ref>The Times, Jan 09, 1940</ref> and reorganised the company. | By 1940 [[A. C. Cossor]] had purchased the whole of the share capital of [[Sterling Cable Co]]<ref>The Times, Jan 09, 1940</ref> and reorganised the company. | ||
WWII Produced hundreds of receiving stations for the Chain HOME defence network, each the size of a caravan. Developed GEE airborne radio location equipment, and other ground and sea-based radio communication equipment<ref>The Times, Aug 24, 1945</ref>. Cossor also became involved in the early development of airborne IFF radar. | WWII: Produced hundreds of receiving stations for the Chain HOME defence network, each the size of a caravan. Developed GEE airborne radio location equipment, and other ground and sea-based radio communication equipment<ref>The Times, Aug 24, 1945</ref>. Cossor also became involved in the early development of airborne IFF radar. A shadow factory in the [[Wren Mill, Chadderton]], near Oldham was established. | ||
1943 [[Leslie Herbert Bedford]] was Chief Research Engineer, received an OBE. | |||
1945 Secondary radar for air traffic control became a key area of development. | 1945 Secondary radar for air traffic control became a key area of development. | ||
1945 The company's valve operations were concentrated in one unit which became the subsidiary [[Electronic Tubes]]. | 1945 The company's valve operations were concentrated in one unit which became the new subsidiary [[Electronic Tubes]] in 1946. Also formed [[Cossor Radar]] Ltd.; factory established at Aldermaston for [[Sterling Cable Co]]<ref>The Times July 3, 1946</ref> | ||
1949 Cossor withdrew from valve manufacture when [[EMI]] acquired control of [[Electronic Tubes]] which continued to supply '''Cossor'''<ref>http://www.competition-commission.org.uk/rep_pub/reports/1950_1959/fulltext/020c02.pdf</ref>. | 1949 Cossor withdrew from valve manufacture when [[EMI]] acquired control of [[Electronic Tubes]] which continued to supply '''Cossor'''<ref>[http://www.competition-commission.org.uk/rep_pub/reports/1950_1959/fulltext/020c02.pdf]</ref>. | ||
1949 [[EMI]] acquired control of Cossor | 1949 [[EMI]] acquired control of Cossor | ||
| Line 96: | Line 117: | ||
* [[Best Products]] Ltd | * [[Best Products]] Ltd | ||
* Beam Instruments Corporation of USA | * Beam Instruments Corporation of USA | ||
1958 Company moved to Harlow. | 1957 Reduced demand for radios and televisions had left an overhang of stock that needed to be disposed of; cut back in government work; reorganisation of the company to form a number of independent subsidiaries which had their own boards and would make decisions about their own businesses:<ref>The Times Oct. 7, 1957</ref> | ||
* [[Cossor Radio and Television]] Ltd | |||
* [[Cossor Radar and Electronics]] Ltd | |||
* [[Cossor Instruments]] Ltd | |||
* [[Cossor Communications Co]] Ltd | |||
In addition existing subsidiaries continued, including: | |||
* [[Sterling Cable Co]] Ltd | |||
* [[Best Products]] Ltd | |||
and subsidiaries in Canada and USA | |||
1958 Cossor sold its radio and television business, [[Cossor Radio and Television]], to [[Philips]] . | |||
1958 The radar and electronics part of the Company moved to Harlow. | |||
1961 Cossor was acquired by the [[Raytheon Manufacturing Co]]. | 1959 Arrangement made with [[EMI]] for that company to acquire the Canadian subsidiary. Another subisidiary, [[Lea Bridge Cabinet Works]] Ltd, made cabinets for radios<ref>The Times Oct. 14, 1959</ref> | ||
1961 Cossor was acquired by the [[Raytheon Manufacturing Co]]. The Cossor name continued in the [[Cossor Electronics]] subsidiary for several years. | |||
== See Also == | == See Also == | ||
| Line 106: | Line 140: | ||
== Sources of Information == | == Sources of Information == | ||
<references/> | |||
* [http://en.wikipedia.org/wiki/A.C._Cossor] Wikipedia | * [http://en.wikipedia.org/wiki/A.C._Cossor] Wikipedia | ||
* [[1961 Dun and Bradstreet KBE]] | * [[1961 Dun and Bradstreet KBE]] | ||
{{DEFAULTSORT: Cossor, A}} | {{DEFAULTSORT: Cossor, A}} | ||
| Line 117: | Line 150: | ||
[[Category: Electronic Equipment]] | [[Category: Electronic Equipment]] | ||
[[Category: Electronic Components]] | [[Category: Electronic Components]] | ||
[[Category: Scientific Instruments]] | |||
Latest revision as of 20:07, 7 May 2024
.jpg)
of Cossor House, Highbury Grove, London, N5. Telephone: North 4340. Cables: "Amplifiers, London".
1859 Alfred Charles Cossor established a company in Clerkenwell, to manufacture scientific glassware.
1875 Alfred's eldest son, also called Alfred Charles Cossor, joined the company
1885 The younger son Frank Cossor joined the company, presumably Alfred Cossor and Sons.
1902 The company produced the first British made Braun tube (cathode ray tube)
1904 Experimental valves were produced by Cossor for Ambrose Fleming.
c.1907 William Richard Bullimore joined the company.[1]
1908 A. C. Cossor left his father's business to found his own company as a private company making scientific and electrical instruments. The expertise in the manufacture of electrical glassware, such as early cathode ray tubes and X-Ray tubes, allowed the company to diversify later into electronics.
1909 Frank eventually took over the running of the scientific glassware company which continues to this day as Accoson, a manufacturer of sphygmomanometers.
1910 Alfred Charles Cossor died. At some point W. R. Bullimore gained a controlling interest in the company; he went on to develop the first thermionic valves that Cossor marketed, incorporating market leading technology[2]
1910 A. C. Cossor and Co exhibited at the Physical Society's Exhibition.[3]
WWI During the first world war the company was one of the first to produce valves in quantity for the war effort including large numbers of type R valves, a generic valve design produced by several other companies.
1918 The company moved to Highbury, to a factory called the Aberdeen Works. The office building which was called Cossor House, is still standing and later formed part of London Metropolitan University campus. Many of the buildings interior art deco furnishings remain untouched and later occupants included the London Screen Academy.
Post-WWI the company produced its first radio sets in kit form, given the name Melody Maker.
1921 Scientific instrument maker[4]
1924 Cossor introduced the first British valves to incorporate an oxide coated filament.
1926 Ceased manufacture of filament lamps[5].
1927 Company launched its famous "Melody Makers" radio sets - these constructor kits did much to popularise radio.
1929 Advert for Radio Receiving Valves. Also as makers of H. T. Eliminators; Trickle Chargers; L. F. Transformers; Loud Speakers; Motor Bulbs. Tuning Coils; Valve Holders; and complete kits of nparts for the construction of the "Cossor Melody Maker". Screened Grid Sets. Electric Lamps and Signs. (Wireless Section - Stand Nos. MM.31, MM.32 and MM.33) [6]
1930 First British RF pentode valve was made by Cossor.
1932 Company introduced its first cathode ray oscilloscope.
By 1933 A. C. Cossor Ltd was making electrical condensers and miscellaneous stamping for wireless apparatus at the Kelvin Works , Kelvin Road, Highbury Grove, N.5.
1935 Cossor cathode ray tube was used in the Daventry Experiment for radar research, conducted using the BBC transmitter.
1936 Company sold its first television receiver.
1937 Receivers for the Chain Home primary radar system, the world's first radar air defence system, were built by Cossor.
Cossor remained pre-eminent in the development of the cathode ray oscilloscope with the introduction of a dual beam version of the instrument.
1937 Manufacturers of wireless valves and apparatus. [7]
1938 On the death of Mr Bullimore, the managing director and proprietor, the company was acquired by Ismay Industries[8] which would be funded by public flotation of the company[9]
1938 A. C. Cossor Ltd became a public company.[10]
1938 John Ismay resigned his directorship; J. H. Thomas was the sold managing director[11]
1938 A. C. Cossor purchased Sterling Batteries Ltd[12] from Ismay.
1939 The company switched to war production.
By 1940 A. C. Cossor had purchased the whole of the share capital of Sterling Cable Co[13] and reorganised the company.
WWII: Produced hundreds of receiving stations for the Chain HOME defence network, each the size of a caravan. Developed GEE airborne radio location equipment, and other ground and sea-based radio communication equipment[14]. Cossor also became involved in the early development of airborne IFF radar. A shadow factory in the Wren Mill, Chadderton, near Oldham was established.
1943 Leslie Herbert Bedford was Chief Research Engineer, received an OBE.
1945 Secondary radar for air traffic control became a key area of development.
1945 The company's valve operations were concentrated in one unit which became the new subsidiary Electronic Tubes in 1946. Also formed Cossor Radar Ltd.; factory established at Aldermaston for Sterling Cable Co[15]
1949 Cossor withdrew from valve manufacture when EMI acquired control of Electronic Tubes which continued to supply Cossor[16].
1949 EMI acquired control of Cossor
1953 Manufacturer of TV sets [17]
1955 Cossor Group also included[18]:
- Cossor Radar Ltd
- Sterling Cable Co Ltd
- Best Products Ltd
- Beam Instruments Corporation of USA
1957 Reduced demand for radios and televisions had left an overhang of stock that needed to be disposed of; cut back in government work; reorganisation of the company to form a number of independent subsidiaries which had their own boards and would make decisions about their own businesses:[19]
- Cossor Radio and Television Ltd
- Cossor Radar and Electronics Ltd
- Cossor Instruments Ltd
- Cossor Communications Co Ltd
In addition existing subsidiaries continued, including:
- Sterling Cable Co Ltd
- Best Products Ltd
and subsidiaries in Canada and USA
1958 Cossor sold its radio and television business, Cossor Radio and Television, to Philips .
1958 The radar and electronics part of the Company moved to Harlow.
1959 Arrangement made with EMI for that company to acquire the Canadian subsidiary. Another subisidiary, Lea Bridge Cabinet Works Ltd, made cabinets for radios[20]
1961 Cossor was acquired by the Raytheon Manufacturing Co. The Cossor name continued in the Cossor Electronics subsidiary for several years.
See Also
Sources of Information
- ↑ The Times, Jul 31, 1937
- ↑ The Times, Jul 31, 1937
- ↑ The Times, Dec 12, 1910
- ↑ U.K., City and County Directories
- ↑ [1]
- ↑ 1929 British Industries Fair Advert 228
- ↑ 1937 The Aeroplane Directory of the Aviation and Allied Industries
- ↑ The Times, Jan 07, 1938
- ↑ The Times, Feb 16, 1938
- ↑ The Times, Mar 02, 1938
- ↑ The Times Oct. 21, 1938
- ↑ The Times, Nov 12, 1938
- ↑ The Times, Jan 09, 1940
- ↑ The Times, Aug 24, 1945
- ↑ The Times July 3, 1946
- ↑ [2]
- ↑ Choosing your Television Set. Published by Freelance in 1953.
- ↑ The Times, Jan 11, 1955
- ↑ The Times Oct. 7, 1957
- ↑ The Times Oct. 14, 1959
- [3] Wikipedia
- 1961 Dun and Bradstreet KBE