{HEAD ~ The washer} 13 consists of {TAIL ~ a disklike flat portion} 16 for pressing and fixing a piece of covering material in place, and a plurality of leaf spring like projections 15 extending radially inwardly of the flat portion, with a gradual descent to a given length, until they terminate convergently 
consists of
{ HEAD ~ The washer } 13 consists of { TAIL ~ a disklike flat portion } 16 for pressing and fixing a piece of covering material in place , and a plurality of leaf spring like projections 15 extending radially inwardly of the flat portion , with a gradual descent to a given length , until they terminate convergently
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH