The ornamental design for a ligaturescrew for instrumentmouthpiece, as shown and described.
FIG. 1 is a first isometric view of the ligature screw for instrument mouthpiece;
FIG. 2 is a second isometric view of the ligature screw for instrument mouthpiece;
FIG. 3 is a right-side view of the ligature screw for instrument mouthpiece;
FIG. 4 is a left-side view of the ligature screw for instrument mouthpiece;
FIG. 5 is a top view of the ligature screw for instrument mouthpiece;
FIG. 6 is a bottom view of the ligature screw for instrument mouthpiece;
FIG. 7 is a front view of the ligature screw for instrument mouthpiece; and,
FIG. 8 is a back view of the ligature screw for instrument mouthpiece.
The subject ornamental design, as shown in FIGS. 1-8 is for a ligature screw for holding a mouthpiece to a musical instrument such as a saxophone or other woodwind instrument. The ligature screw is operable to rotate within an alignment arm that may attach to a mouthpiece at one of a plurality of engagement holes (disclaimed in this embodiment as broken lines). The ligature screw is operated when a person engages a rotatable screw handle that is shown having five rounded points in a star-like pattern. When rotating the ligature screw in one direction (e.g., clockwise), an engagement base may be moved toward a mouthpiece body (disclaimed). Likewise, when rotating the ligature screw in another direction (e.g., counter-clockwise), the engagement base may be moved away from the mouthpiece body (disclaimed). Further, the ligature screw is disposed within an assembly that is able to engage one set of engagement holes on the mouthpiece. Having a ligature screw assembly that only contacts the mouthpiece at two points is a design feature. Broken lines represent unclaimed material that is intended to aid in interpretation of the physical appearance of the ligature screw without limiting the scope of the ligature screw.