Abstract: A snare cajón percussion instrument is disclosed. The instrument comprises a closed frame body having a plurality of sides, each side having a top portion, a bottom portion, an inner portion, and an outer portion. A rigid striking surface is securely affixed to the top portions of the plurality of sides. A snare apparatus having a brace, a fastener, and at least one snare element is securely attached to the inner portion of a first side of the frame body via the fastener and is configured to allow the snare element to alternatively contact and not contact the striking surface to produce a snare sound. The instrument may have a second striking surface that does not contact the snare apparatus and produces a cajón sound.

Abstract: An adjustment assembly for snare wires includes an adjustment unit and a pressing unit respectively located on two opposite positions of the shell of a snare drum. The adjustment unit has a body with a slide slot. A shifting member is slidably connected to the body and driven by a driving member connected to the body. The shifting member has a wire carrier which is adjusted by rotating an adjusting bolt. The pressing unit includes another wire carrier which is controlled by another adjusting bolt. By adjustment of the two adjustment bolts, the tension of the snare wires can be adjusted.

Abstract: An internal mechanism for a musical instrument snare drum that supports the snares and allows adjustment of the snare strands in tension as well as relative position to the vibrating member or head of the drum is provided. The mechanism has a support beam that gives a stiffer and more stable base for increased accuracy of all adjustment. The support beam also provides increased guiding for the snare holders during the tension adjustment of the snares. The adjustment of the position of the snares in relation to the vibrating member or drum head is accomplished by deflecting the strands with a bridge like arrangement providing precise placement of the strands for optimum performance.

Abstract: A snare strainer adapted to a snare drum comprises first and second strainers, which are attached to opposite positions on the exterior circumferential surface of a drum cylinder and by which a snappy member including snares is controlled to move in close contact with or separate from the backside drumhead upon operation of a switch mechanism. One end of an interconnection member included in the snappy member is held between first and second holding members of the first strainer, and the other end is held between third and fourth holding members of the second strainer. A tension adjustment screw is operated to adjust tension applied to the snappy member, which can be visually observed using the scale. Hence, it is easy for the human operator to attach and replace the snappy member and to replace the backside drumhead with another drumhead in a short period of time.

Abstract: An adjust device for adjusting a tension of a snare of a snare drum includes a body laterally secured on a periphery of the snare drum. A slider is movably received in the body and one end of the snare is secured on the slider so that the tension of the snare is adjusted when the slider is moved. An adjuster is partially screwed into the body for adjusting the stroke of the slider. An actuated device includes a shaft having a first end extending through the adjuster and connected to the slider for driving the slider. A lever is pivotally connected to a second end of the shaft for lifting the shaft and the slider to pull the snare of the snare drum.

Abstract: A tunable drum is shown having a hollow drum shell, and imperforate drumheads closing the ends of said drum shell. One or more opening extend through the drum shell for acoustic venting, and valves are provided for adjusting the size of the openings to vary the amount of acoustic venting, and consequently the volume, pitch, tone, timbre and stick response of said drum. The valves may be slide valves movable, e.g., slidable or pivotable, between an open and a closed position. A preferred valve consists of a ring member positioned for rotation inside said drum and slidable endwise of the drum to cover or uncover said drum openings, or the ring member may have openings that match the drum openings and operable to cover or uncover the openings or rotation. A handle for rotation of the ring member extends outside the shell for movement by the drummer.

Abstract: The present invention relates to a musician quality hand drum that may be produced in a simplified and economical manner. The hand drum is simplified in that it utilizes a ring interconnected within an open end of a simple tubular shell to allow a musical quality drumhead (e.g., an animal skin drumhead) to be interconnected in tension directly to the outside surface of the drum shell. In this regard, the need for an intricate, expensive drumhead fixation means and/or drumhead tensioners is eliminated, allowing for cost benefits to be realized.

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 assembly has a hollow drum shell with a drumhead and drum rim closing one or both end thereof and a guard member secured on one or both drum rims. The guard member is a sleeve member fitting over one or both edges of the drum dim and is secured thereon by setscrews or bolts and locknuts.

Abstract: A throw-off device for use on a drum having a side wall and a head, a support body attachable to the side wall of the drum, a tensioning member movable relative to the body to tension or release strands adjacent the drum head, a lever movable between selected positions, and cam and follower roller elements that are relatively movable in response to lever movement to effect member movement.

Abstract: A snare drum assembly is provided which enables the snare drum element to be positioned internally of a drum. In the preferred embodiment, the snare mechanism acts against the top drum head of a drum, and permits the drum manufacturer to eliminate the lower drum head and related structure, greatly simplifying drum construction and cost.

Abstract: A transitionally reinforced drum shell for an acoustical drum of the type having drumhead tensioning hardware is disclosed herein. The invention comprises a staged bridge reinforcement structure incorporated on the inside of the shell, which provides structural support for the drumhead tensioning hardware while enhancing the tonal quality of the instrument. The transitions may be accomplished with abrupt steps or smooth tapers between thickness regions. Also disclosed are a non-integrated staged bridge reinforcement structure, which can be retrofitted to existing drum shells, and a method of reinforcing axial regions of a drum shell with such a staged bridge reinforcement structure.

Abstract: A drum insert comprising a thin, flexible sheet of material having an overall area substantially congruent with that of the bottom drum head, and a multiplicity of irregularities, preferably holes, distributed substantially uniformly over at least about 20% of the area of the sheet.

Abstract: A snare removing device for a drum including a drum having an upper drumming surface, a lower surface, and a cylindrical side wall therebetween. The lower surface has a snare removably coupled thereto. An adjustable tripod is secured to the lower surface of the drum. A snare removing portion is provided that is comprised of a telescopic vertical arm having a pivoting upper portion pivotally coupled with the snare whereby pivoting of the pivoting upper portion will remove the snare from the lower surface of the drum.

Abstract: An adjustable camber induced snare assembly for a drum with a hollow body with a batter head and a snare head comprises an elongate snare a support fastenable adjacent to the hollow body extending across the snare head. Opposing adjustable and biased snare fasteners are mountable on the snare support for slightly tensioning and supporting snares. Adjusting the snare fasteners creates a camber in the snares to adjustably urge the snares to continuously have contact with the snare head during drum play without significant tensioning.

Abstract: A drum having a top head ring, a top head across the top head ring, a tensioning ring above the top head ring and having a downwardly directed annular flange inward of the top head ring and contacting the top head, and tensioning bolts for adjustable positioning of the tensioning ring with respect to the top head ring is disclosed. There is also a bottom head ring, a bottom head across the bottom head ring, a shell beween the top head and the bottom head, and tensioning rods for pulling the bottom head ring towards the tensioning ring to thereby tension the bottom head across the bottom edge of the shell, and at least one snare mechanism positionable under each head, the snare mechanism including snare wires positionable from edge to edge of the heads.

Abstract: In construction of a drum having a cylindrical stem and fore side and rear side drum heads attached to both open ends of the stem, a snappy is arranged within said stem facing the inner surface of the fore side drum head with an adjustable clearance and at adjustable tension for easy generation of musical tones of rich rising characteristics and rich tone volume over the entire tone range.