Abstract: A rimless drum structure in which a drumhead has a membrane attached to an outer ring and an adjustment ring is disposed beneath the membrane within the outer ring. Tuning devices are spaced around the rings and are adjustable to urge the inner ring against the underside of the membrane, and thereby varying the tension and the tuning of the membrane. Two of such drumheads may be assembled in opposing fashion through the use of a plurality of rigid spacer members attached between the brackets of the upper and lower drumheads. An adjustable snare device having a cam type quick release mechanism and a snare tension adjustment device, may be mounted on the dual headed assembly. Sound control devices having bumpers exerting an adjustable amount of force on the upper drumhead membrane may also be used and these devices may be moved to positions at variable distances from the center of the drumhead to vary the sound effect.

Abstract: A multiple instrument holder for marching, in which a support section for holding a plurality of percussion instruments is supported in forwardly spaced relation to the body of the marcher by a means projecting forwardly from the marcher's body and engaging the instrument support section. Harness around the shoulders of the marcher is used for supporting the outer end of the projecting means and the instrument support section in various vertical positions. The instrument support section is preferably bar-like and arcuate in shape, and contains a plurality of means for holding instruments in various positions and arrangements thereon.