M.Goodall, A.Tagg British Aircraft before the Great War (Schiffer)
Deleted by request of (c)Schiffer Publishing
CONISBROUGH gliders (Conisbrough & District Aeroplane Society, 18 Church St., Conisbrough)
This mainly model building club was presented with a full size glider by the Sheffield Model Aero Club in May 1911. In the course of rebuilding it was reduced in span from 42ft to 24ft. In this form it was only capable of lifting a light person to a height of 20ft when towed manually. The machine consisted of a pair of two bay wings with no stabilizing surfaces. Gliding in this manner was dangerous and was soon discontinued. A second glider of Demoiselle type was under construction by club members F.J. Wright and G.N. Wilton at Doncaster in the second half of 1911, but may not have been completed.
P.Lewis British Aircraft 1809-1914 (Putnam)
Conisborough Glider No. 1
The Conisborough Glider No. J was flown by the Conisborough and District Aero Society, Yorks., during 1911. It was a biplane of 42 ft. span, presented to the Society by the Sheffield Aero Club. In this form it carried its pilot to a height of 20 ft. when towed by hand into a light breeze. This was evidently thought to be too risky, and the span was reduced later to 24 ft. for training purposes.