Grace's Guide

British Industrial History

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Cirrus Hermes Engineering Co

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January 1934.
March 1934.

Cirrus-Hermes Engineering Company, of Purley Way, Waddon, Croydon

1931 Acquired Cirrus Aero Engines Company.

After purchase, the Cirrus Hermes I, II, III & IV were produced ranging in power from 105 hp to 140 hp depending on type. The later Cirrus engines were designed to run inverted.

1933 Constructors of low-powered four in line air cooled aero engines. Works: London Air Port, Croydon, Surrey. Registered Office: 274 Gresham House, Old Broad Street, London, E.C.2.[1]

1933 Patent - Improvements relating to inertia starters for internal combustion engines.

1936 On the formation of Blackburn Aircraft Ltd, Cirrus-Hermes Engineering was an associated company but was not brought into the Blackburn group because its new products (engines) were still in the development phase[2]

1937 Blackburn acquired the Cirrus-Hermes company and started producing aircraft engines - the Blackburn Cirrus range.

1937 Advert for Aero Engines. 90 h.p. "Cirrus Minor" Aero Engine. 150 h.p. "Cirrus major" Aero Engine. Both of the above are 4-cylinder-in-line inverted air-cooled engines. (Engineering/Metals/Quarry, Roads and Mining/Transport - Stand No D.921) [3]

1937 Aero engine manufacturers. "Cirrus" and "Cirrus Hermes" Aero Engines. [4]



See Also

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Sources of Information

  • [1] Wikipatents
  • AA. [2] Image courtesy of Aviation Ancestry
  1. 1933 Who's Who in British Aviation
  2. The Times, Jul 09, 1937
  3. 1937 British Industries Fair Advert p614; and p348
  4. 1937 The Aeroplane Directory of the Aviation and Allied Industries