sentences:  Patent No.47 of 1909 comprises three pages of descriptions and a single page with an illustration of the rocking wing concept as applied to a theoretical aeroplane.From examining the illustration supplied with the patent and surviving photographs of Watson's aeroplanes, it is plainly evident that he had fully intended on constructing an aircraft based on his patent.Exactly when he completed his first aeroplane is not known, but on page 400 in the 2 November 1909 issue of "The Aero" magazine is the following statement