Music – Instruments – Drums
Patent
1995-10-23
1998-02-24
Spyrou, Cassandra C.
Music
Instruments
Drums
224910, 248443, G10D 1302
Patent
active
057213895
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
From German Utility Model 88 03 084.9, it is known to arrange a flexible connecting or damping member of non-metal vibration-damping and/or vibration-absorbing material between a carrying member and a holding member of a carrying and/or holding device for musical percussion instruments. The carrying member is arranged on the instrument body, and the rigid holding member is fixed to a support, such as a leg, an arm, a stand and/or a frame. The holding member is located at the outer side of the instrument body or kettle and the carrying member is located at the inner side of the instrument body or kettle. The vibration breaker constructed in this manner is composed of a first section arranged between the carrying member and the inner side of the kettle, and a second section arranged between the holding member and the outer side of the kettle, wherein one of the sections additionally engages in openings of the kettle, and wherein tension rods between the holding member and the carrying member extend through the openings.
In musical percussion instruments, the damping members serving as bearings for the attachments have the purpose of preventing the transmission of mechanical vibrations from one instrument, for example, a bass drum, to another instrument, for example, a tom-tom mounted on the bass drum. As a rule, several different musical percussion instruments are combined for the intended use as a set of instruments, i.e., percussion instuments.
The invention is based on the object to facilitate improved vibration properties in a carrying and holding device of the above-mentioned type.
In accordance with the invention, this object is met by constructing the lower bearing as a pivot bearing. This makes it possible to achieve a damping characteristic which is automatically influenced from the outside by the respective weight of the instrument supported by the attachment. After mounting the instrument to be supported by the attachment, wherein the instrument is located above the lower bearing or the pivot bearing, just the load resulting from the weight of the instrument (tom-tom) alone results through the lever arm in an adjustment of the pivot bearing and, thus, in a spring action.
If, in accordance with a preferred development of the invention, the pivot bearing has a compression spring mounted between the kettle and the attachment, the spring effect provided by the pivot bearing is improved. Depending on the weight or the condition of loading, which is reinforced by beating on the tom-tom, the spring is either compressed or relaxed accordingly.
A development of the invention provides that the compression spring is enclosed by a bellows of vibration-damping and/or vibration-absorbing material. The bellows, for example, composed of a soft-elastic synthetic material or of rubber, improves the damping behavior of the pivot bearing which acts like a spring because the bellows can absorb any vibrations of the metal compression spring. Of course, it is possible to influence an adjustment of the spring-like properties to the respective weight of the instrument to be supported by the attachment by using compression springs having different spring strengths.
A proposal of the invention provides that the compression spring and the bellows are arranged on a threaded bolt of a knurled screw which is screwed into a lower holding stirrup of the attachment. In this manner, it is possible to pretension the compression spring in a variable manner and, thus, to carry out variations of the spring action and, consequently, of the sound behavior; this is because it is only necessary to screw the knurled screw more or less into the holding stirrup.
It is recommended to provide the free end of the threaded bolt of the knurled screw facing away from the head of the screw with a safety ring. This safety ring prevents an undesired unscrewing of the knurled screw of the holding stirrup, one the one hand, and, on the other hand, the safety ring constitutes a stop limiting the maximum opening, i.e., the sta
REFERENCES:
patent: 4700437 (1987-10-01), Hoshino
patent: 5544561 (1996-08-01), Isomi
patent: 5573158 (1996-11-01), Penn
Kleindienst Anke
Sassmannshausen Werner
Kueffner Friedrich
Sonor Johs. Link GmbH
Spyrou Cassandra C.
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