The fuselage of Andre Delprat’s ornithopter-powered flying-machine in its incomplete state in Alexandra Park in November 1906, with the front presumably on the left. The large vertical slots in the top deck allowed for the movement of the wings, the powerplant being housed above the passenger accommodation.

A rear view of the Delprat machine, with someone peering out of the top window and a dog on the viewing “promenade deck" for passengers. The structure has been braced by cables to stop it being blown over in strong winds. Puzzlingly, the structure had doors fitted into its second storey as well as the first; one has to wonder why!

British Patent No 13,502 Delprat, A., June 15, 1904. DETAIL DRAWINGS FROM Delprat's 1904 patent for “Aerial machines without aerostats; propelling and steering”, showing the complex mechanism for driving and controlling the beating wings.
Fig 3 concentrates on the wings, marked A and B, shafts marked a and b turning in sleeves marked C provided with ball bearings. Fig 6 shows the arrangement of the cam used to propel the wings. An axial rocking motion is given to the wings, without interfering with their beating motion, by cam W acting on the bearing a2 in Fig 10. The cam is shown separately in Fig 7. Fig 11 shows how, by the use of cams, the blades could be set to dip forwards or backwards during the stroke, causing the machine to move forwards or backwards. The wings (B) could also be fixed in a horizontal plane to act as brakes, by means of the device shown in Fig 12.