{HEAD ~ The device} 4, characterized by {TAIL ~ the fact} that the lever is in a position which covers the control end of the adjusting screw when the sliding element is in the position in which it engages the coupling means 
characterized by
{ HEAD ~ The device } 4 , characterized by { TAIL ~ the fact } that the lever is in a position which covers the control end of the adjusting screw when the sliding element is in the position in which it engages the coupling means
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL 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