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History of the manufacturer  

Portadyne, (Brand), Dynaport Radio & Television Co. Ltd. (Whittingham Smith, Kew); London

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Name: Portadyne, (Brand), Dynaport Radio & Television Co. Ltd. (Whittingham Smith, Kew); London    (GB)  
Abbreviation: portadyne
Products: Model types
Summary:

Whittingham, Smith & Co.
4a St. Mary's Square, Ealing, London, WI (1926)
100 Kew Green, Kew, London. (1929)
Portadyne Works, Chase Estate, Park Royal, London, NW (1930)

Portadyne Radio Ltd. (1932)
Portadyne Works, Gorst Road, North Acton, London, NW10 (1933)

Gorst Electrical Co. Ltd.
Portadyne Works, Gorst Road, North Acton, London, NW10 (1936)

 

Dynaport Radio & Television Ltd.
Portadyne Works, Gorst Road, North Acton, London, NW10 (1937)

Brand: Portadyne

Portadyne radios were manufactured over time from 1926 by the various companies listed above.

All radios were manufactured at the Portadyne Works, Gorst Road North Acton from 1930.

From 1947 all Portodyne radios were manufactured by Dynaport Radio & Television Ltd. until the late 1960s.

Founded: 1925
Production: 1925 -
History:

Robert Buxton Whittingham founded Whittingham, Smith & Co. circa 1925.[1]

Edward Charles Scott Smith was a partner but it is not clear as to his holding in the company at inception. [2]

In mid-1926 they applied for the Portadyne trademark. [3]

The company manufactured Portadyne portable receivers, advertising four models in the November 10, 1926, edition of Wireless World. [4]

They manufactured portable radios from their factory, Portadyne Works, Chase Estate, Park Royal, London.

Around 1933 Portadyne Radio Ltd. was formed with Whittingham as Chairman & Managing Director and Smith as Managing Director. [2] [5]

Portadyne Radios were advertised by Gorst Electrical Co. Ltd. in 1935. [6]

In 1937 Edward Charles Scott Smith was the managing Director of both Portadyne Radio & Gorst Electrical. [7]

From late 1937 Portodyne radios were manufactured Dynaport Radio & Television Ltd., Portadyne Works, Gorst Road. [7]

[1] Broadcaster & Trade Annual 1933, Page 79.
[2] Broadcaster & Trade Annual 1933, Page 78.
[3] Electrical Review Aug 20, 1926, Page 324.
[4] Wireless World Nov 10, 1926, Page 608.
[5] Wireless & Gramophone Trader Dec 10, 1932, Page 46.
[6] Broadcaster & Wireless Retailer Oct 5, 1935, Page 37.
[7] Broadcaster & Trade Annual 1937,  Page 40.

This manufacturer was suggested by Konrad Birkner † 12.08.2014.


Some models:
Country Year Name 1st Tube Notes
GB  34–36 Portadyne S/A.C. AC/S2Pen   
GB  32 Challenger S215A  internal frame aerial; turntable; lift-up lid. 
GB  33 Battery Portable PB5 PM12A  first battery receiver with class B amplification. 
GB  33 Portadyne S   only 20 sec. warm-up time. Local/distance switch. 
GB  45 Portadyne Table Model U56 6A8G  Walnut and maple veneered cabinet. There is a "Gram" socket but no "gram" switch. Also t... 
GB  53 Princess [Superhet]   Available in brown, cream, green or blue. Hill states this set is a superhet, but possibly... 
GB  46 Portadyne Table Model 2 6K8G   
GB  60 Portadyne Radiogram    
GB  34 A37 FC4  The Portadyne A37receives from 200-560 m and from 900-1900 m. On inside back wooden plate ... 
GB  53 Universal 12BA6  Different case but same chassis as the model Princess. 
GB  48 Minx 12K8  The Minx is an AC/DC mains 2 band superhet radio with 5 tubes including the rectifier tube... 
GB  56 Princess [TRF late] 12BA6   

[rmxhdet-en]

Further details for this manufacturer by the members (rmfiorg):

[1] Broadcaster & Trade Annual 1933, Page 79.tbn_gb_dynaport_1_broadcaster_trade_annual_1933_page_79.jpg
[2] Broadcaster & Trade Annual 1933, Page 78.tbn_gb_dynapor_2_broadcaster_trade_annual_1933_page_78.jpg
[3] Electrical Review Aug 20, 1926, Page 324.tbn_gb_dynaport_3_electrical_review_aug_20_1926_page_324.jpg
[4] Wireless World Nov 10, 1926, Page 608.tbn_gb_dynaport_4_wireless_world_nov_10_1926_page_608.jpg
[5] Wireless & Gramophone Trader Dec 10, 1932, Page 46.tbn_gb_dynaport_5_wireless_gramophone_trader_dec_10_1932_page_46.jpg
[6] Broadcaster & Wireless Retailer Oct 5, 1935, Page 37.tbn_gb_dynaport_6_broadcaster_wireless_retailer_oct_5_1935_page_37.jpg
[7] Broadcaster & Trade Annual 1937, Page 40tbn_gb_dynaport_7_broadcaster_trade_annual_1937_page_40.jpg
Patent Specification 735512.tbn_gb_dynaport_patent_specification_735512.jpg

  

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