In {TAIL ~ this embodiment}, the rope drum 18 includes {HEAD ~ an additional rope} 19 which is guided over a guide roller 20 and is attached to a stationary point 21 
In { TAIL ~ this embodiment } , the rope drum 18 includes { HEAD ~ an additional rope } 19 which is guided over a guide roller 20 and is attached to a stationary point 21
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH