{HEAD ~ This relative rotational movement} of {TAIL ~ crank} handle 7 in relation to crank arms 6 is converted into backward and forward radial movement of crank arm 6, which causes the extremity of arm 6 that is connected to the rear section of blade 2 to follow an elliptical orbital path around turbine axle 4 
{ HEAD ~ This relative rotational movement } of { TAIL ~ crank } handle 7 in relation to crank arms 6 is converted into backward and forward radial movement of crank arm 6 , which causes the extremity of arm 6 that is connected to the rear section of blade 2 to follow an elliptical orbital path around turbine axle 4
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH