Abstract: An adjusting mechanism for longitudinally positioning the reed on the mounting face of a woodwind musical instrument mouthpiece. In one embodiment, the adjustment mechanism includes a micrometer-type screw threadedly engaging a ligature body secured to the mouthpiece which operates a yoke connected to the rear edge of the reed to move the reed tip with respect to the arcuate mouthpiece edge. A pair of longitudinally spaced vertically adjustable rollers bear against the outer surface of the reed to provide transverse pressure for holding the reed in place, while permitting longitudinal movement. The apparatus permits precise positioning of the reed to produce optimum performance with minimum adjustment time. In a second embodiment, the reed is adjustable by means of a lever arm linkage operated by an adjustment screw located on the bottom of the adjustment mechanism. The reed is advanced or retracted by means of a grooved roller which may cooperate with matching grooves on the reed surface.

Abstract: One or more openings are provided through the tip sealing surface of a woodwind musical instrument mouthpiece to control and modify the boundary layer conditions between the reed and the tip sealing surface to improve ease of playing and the tonal characteristics of the mouthpiece. The openings may comprise a plurality of spaced circular apertures, or slots extending through the tip sealing surface, or a generally continuous elongated slot extending approximately the entire width of the tip sealing surface. The axis of the apertures or slots may be oriented to provide the desired operating characteristics.