Leyat

   Marcel Leyat built mainly biplane gliders, a few of which were later fitted with motors. His first was built in May 1909 and was shown in 1910 at the Grau air meet near Istres in southeastern France. In September Leyat and Lindpainter were reported testing "a new biplane racer" at Mourmelon; it featured a Wright-style undercarriage (with wheels), a long pointed uncovered nacelle, ailerons set between the wingtips, and a curved tailplane mounted on outriggers to the rear.
   In 1911 Leyat came up with another biplane glider set on 2 skids, with a warping tailplane inside a box-like outrigger. Aileron surfaces were hinged to the top of the upper wing, with a secondary set of surfaces hinged in turn to the top of the first. It was reported to have taken off from a rail at 30 kmh-probably catapulted - and to have flown for 800 m at a height of 50 m. A 50 hp Gnome was fitted as an experiment at the end of July. In this configuration it was, probably the "biplane with a lifting tail" mentioned in 1912.

   (Span: 16 m; length: 11 m; wing area: 49 sqm; weight: 500 kg; 50 hp Gnome)
  
   In the same year Leyat also built a glider, of wing area 18 sqm mounted on a single 1.2 x 5.2 m float, to be towed by a speedboat.