In Fig. 6 the gas-kite shown is a concave-convex gas-vessel, like an upturned canoe. It is drawn forward by the screw-sail, which is rotated by hand and foot power. The steering is done by tipping to change the level or direction. In Fig. 7 the sky-cycle is shown tipping downward in the act of circling to the left in a descending spiral, the aeronaut using both screw-sail and small aeroplanes.
Jerome B. Blanchard, of Highlands, Col., patented in 1891 the aeroplane flying-machine shown in Fig. 8. He disdains the balloon
and depends entirely on the two aeroplanes and the speed of the aviator to maintain the vessel in the air. The plan is to start the machine along an elevated tramway until a lifting speed is acquired, and then to depend upon the muscular exertion of the occupant.
Of a more practical character is the 'trolley flyer' of Daniel C. Funcheon, of Valderde, Col., illustrated by Fig. 9. A drum is supported on a platform and hung from an aeroplane. Around the drum coils a wire that may be made to convey a current of electricity for propelling the mechanism. Of course, the machine would require propellers and balancing devices, which are not shown in the drawing.
Fig. 10 represents a machine actually built and tried by Arthur Steutzel, of Altona, Prussia, in 1896. The wings were eleven feet long, and were flapped by the power of a carbonic acid gas-motor in the receptacle below. The rudder was designed to maintain the course