Форум Breguet's Aircraft Challenge
Arthur Waldemar Schaef got a design patent in New Zealand No.26501 on May 3, 1910. The patent was also applied for in Great Britain as A.D.1910 (series) 20,125.
In this patent it is claimed that
In an aeroplane flying machine, the employment of side wings planes pivotally mounted beneath the main plane and simultaneously operable by ropes under the control of the aviator for the purpose of controlling the direction of flight in a vertical plane, substantially as herein specified and illustrated in the drawing