l6 WlLDli, On Aerial Loconiotioii. 



motion required, by mounting the engine C}-linder on 

 trunnions, and regulating the angle of inclination b}' well- 

 known mechanical means. 



43. Instead of causing the parachute to vibrate by the 

 direct action of a piston fixed on the sustaining shaft, the 

 motive power may be transmitted through the cranks of 

 two or more engine cylinders arranged horizontally, or 

 from cranks driven by an electro-motor. In either of 

 these alternatives the lower end of the sustaining shaft 

 would require to be jointed to receive the crank rod of 

 the motor. 



44. The inclination of the parachute for obtaining 

 horizontal locomotion in this case may be effected by 

 means of a rectangular or inverted f|-shaped frame, the 

 lower ends of which would be trunnioned on the same 

 centre as the crank shaft, and the sustaining shaft would 

 reciprocate through a suitable bearing in the upper end 

 of the rectangular frame. 



45. The steering of the vibrating parachute, when 

 moving rapidU' in a horizontal direction, would be affected 

 by means of an aerial rudder attached to the car, or, when 

 moving slowl}-, by slightly altering the distribution of 

 weight in the car and causing it to gyrate in the required 

 direction. 



46. The sustaining surface of the vibrator}- parachute 

 would be sufficiently large to enable the aviators to 

 descend with safety in the event of a sudden failure of 

 an\- part of the mechanism. 



