| 摘要 |
To adjust the tension on the snare of a drum head, one end of the snare is supported to an adjustment device, including a base on the drum trunk, a slide guided for movement vertically along the base and the snare is attached to the movable slide. First and second switches are pivotable on the base between off and on positions. Two shafts are attached to the slide. A respective link leads from each switch to a lifting member on the shaft and moving up of the switch moves the lifting member to raise the shaft to raise the slide to a varying extent depending upon the height of an adjustment nut on each of the shaft. The nuts on the two share adjustable for setting high tension and low tension on the snare.
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