{TAIL ~ A boot} 1, wherein the said end of the lever is formed as a round ended lip for engagement with {HEAD ~ said fixed seat} 
{ TAIL ~ A boot } 1 , wherein the said end of the lever is formed as a round ended lip for engagement with { HEAD ~ said fixed seat }
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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD