When, in particular, the internal angle γ or δ formed between {HEAD ~ the slanted sides} of {TAIL ~ the wings} 22 22 and the V groove walls is greater than 90°, then the action of the wings 22 22 tends to scoop the fiber 11 away from the V groove walls as it is being guided into place 
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When , in particular , the internal angle γ or δ formed between { HEAD ~ the slanted sides } of { TAIL ~ the wings } 22 22 and the V groove walls is greater than 90 ° , then the action of the wings 22 22 tends to scoop the fiber 11 away from the V groove walls as it is being guided into place
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH