| 摘要 |
<p>PROBLEM TO BE SOLVED: To simplify a mounting work and a tension adjusting work, and to obtain uniform tension, and to lengthen the attenuating time of vibration, and to obtain a large volume by forming strings of one long wire repeatedly bent and laid between a pair of supporting members, and continuing the strings in a series. SOLUTION: Plural freely rotatable rollers 64 are arranged on a pair of right and left supporting members 62 and 63 formed like plates in the longitudinal direction of the supporting members with fixed intervals, and one long wire 26 is laid along the roller 64 so as to be made adjacent each other so that a series of continuous plural strings 25a-25n can be formed. Then, the both ends of the wire 26 are fixed to one supporting member 62 so that strings 60 for a drum can be constituted. Thus, the strings can be formed of one long wire, and continued in a series so that the attenuating time of vibration can be lengthened, and a volume can be increased, and the mounting work and tension adjusting work on the supporting members can be simplified, and the tensions of all the strings can be uniformly adjusted.</p> |
