Oscar Gnosspelius

Major Oscar Theodor Gnosspelius (10 March 1878 – 17 February 1953) was an English civil engineer and pioneer seaplane builder.

Gnosspelius was born at Brookfield House, Lydiate on 18 March 1878 the only son of Adolf Jonathan Gnosspelius. He was educated in Bedford and later was to study civil engineering at the City and Guilds Central Technical College in South Kensington. Between 1899 and 1902 he was an apprentice to civil engineer Sir Douglas Fox. After working at a quarry in Sweden he spent time in Transvaal and Brazil carrying out land surveys, by 1908 was in Angola working on a railway survey.

In 1910 he had a monoplane floatplane similar to the Bleriot XI and powered by a 20 hp (15 kW) Alveston engine built by Borwick and Sons of Bowness-on-Windemere. This failed to fly, but a second floatplane built in 1911 was successfully flown on 13 February 1912. In 1911 he designed the Lakes Waterhen for the Lakes Flying School.

During the first world war he was commissioned in the Royal Naval Air Service, later Royal Air Force and was employed on the inspection staff. Between 1918 and 1925 he worked in the test department at Rochester for Short Brothers the seaplane builders. During his time at Shorts he designed an ultralight monoplane the Gnosspelius Gull.

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