Abstract: A drum acoustic wire assembly installed on a drumhead, including a plurality of acoustic wires disposed side by side in a direction perpendicular to the direction of the axis of each one of the wires, and a pair of wire holding plates that hold both ends of the acoustic wires. The acoustic wires are coil-form wires and are connected by soldering to the undersurfaces of the tip (inner) end portions of the wire holding plates. Projecting portions are formed on the undersurfaces of the base ends of the wire holding plates, so that, when the acoustic wires are in contact with the drumhead, the tip (inner) ends and the base (outer) ends of the wire holding plates are at substantially the same height or the tip ends are lower than the base ends.

Abstract: An acoustic wire assembly mounted on a drumhead, including a plurality of acoustic wires disposed parallel to each other so as to be brought into contact with and moved away from the drumhead in which at least some of the acoustic wires are polygonal (square, pentagonal, hexagonal and octagonal) in cross-section, and they can be in a coil shape or a straight shape.

Abstract: An acoustic wire assembly mounted on a drumhead, including a plurality of acoustic wires disposed parallel to each other so as to be brought into contact with and moved away from the drumhead in which at least some of the acoustic wires are polygonal (square, pentagonal, hexagonal and octagonal) in cross-section, and they can be in a coil shape or a straight shape.

Abstract: A drum acoustic wire assembly installed on a drumhead, including a plurality of acoustic wires disposed side by side in a direction perpendicular to the direction of the axis of each one of the wires, and a pair of wire holding plates that hold both ends of the acoustic wires. The acoustic wires are coil-form wires and are connected by soldering to the undersurfaces of the tip (inner) end portions of the wire holding plates. Projecting portions are formed on the undersurfaces of the base ends of the wire holding plates, so that, when the acoustic wires are in contact with the drumhead, the tip (inner) ends and the base (outer) ends of the wire holding plates are at substantially the same height or the tip ends are lower than the base ends.

Abstract: A torsion bar device includes a torsion bar having a torsional portion, an upper connecting portion associated with an input shaft, and a lower connecting portion associated with an output shaft; a first cylinder for encompassing the torsional portion, one end of the first cylinder being connected to one of the upper and lower connecting portions, and the other end of the first cylinder extending in the longitudinal direction of the torsion bar to the other connecting portion of the torsion bar; a second cylinder for encompassing and being connected to the other one of the upper and lower connecting portions of the torsion bar; a first supporting member for supporting the torsion bar at the other end of the first cylinder in a circumferential direction of the torsion bar; a second supporting member for supporting the torsion bar in the circumferential direction at a portion of the second cylinder where the second supporting member is aligned with the first supporting member; and an elastic member for elastica

Abstract: In construction of a supporting mechanism for mounting a tubular tone generator to a stand of a percussive musical instrument, a holder shaft insertable into the sound generator is provided at its lower end with a pivotal lock bar of a biased mass distribution and a slidable coupled stopper to hold the lock bar at a prescribed angular position. When inserted into the sound generator, the lock bar turns automatically to assume the proscribed angular position due to the biased mass distribution and locks the holder shaft to the tone generator. Absence of the conventional tension wire binding system allows free choice in sound characteristics, simplified easy mounting operation and high mechanical durability even under vibratory conditions during performance.