<p>A lappet has a fixed member (15; 29; 33) and a movable member (16; 30). The fixer member (15; 29; 33) is fixed to a support member (14; 28) for integral rotation. The support member (14; 28) extends parallel to a longitudinal direction of a rail (7) supporting a spindle (8) that carries a bobbin (B) on which a yarn (Y) is wound. The movable member (16; 30) has a guide (11) for guiding the yarn (Y) to the bobbin (B). The movable member (16; 30) is relatively rotatable to the fixed member (15; 29; 33) and integrally rotatable with the support member (14; 28) by way of the fixed member (15; 29; 33). The support member (14; 28) has a positioning surface (14a; 28a; 32a; 32b; 28b; 28c). The fixed member (15; 29; 33) has a fitting portion (17; 29c; 23) for mating with the support member (14; 28). The fitting portion (17; 29c; 23) has an engaging portion (17a; 29f; 23a; 29g; 29h; 33c) that engages the positioning surface (14a; 28a; 32a; 32b; 28b; 28c) to prevent a relative rotation of the fixed member (15; 29; 33) to the support member (14; 28). <IMAGE></p>
