(57) In a clearer unit for draft rollers arranged to cause endless clearer belts (11,
21) to travel in contact with the peripheral surfaces of the draft rollers, when a
roller gauge is to be changed in accordance with a change of a type of fiber yarn,
the adjustment of the locations where urging members (13, 23) for urging the clearer
belt (11, 21) is made unnecessary by such an arrangement that each of the urging members
(13, 23) includes a multiplicity of contact pieces (13b, 23b) the number of which
is greater than that of the disposed draft rollers and further the contact pieces
(13b, 23b) are disposed along the traveling direction of the clearer belts (11, 21)
in a draft zone, so that the clearer belts (11, 21) are pressed against the peripheral
surfaces of the draft rollers through these contact pieces (13b, 23b).
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