| 摘要 |
<p>PURPOSE:To execute continuous beating at a high speed by attaching both ends to a catcher and a jack, providing an energizing member for energizing the catcher and the jack in the direction for separating them, and also, placing each fitting point of the energizing member and a center pin so as to be positioned on a straight line at the time of hammer stop. CONSTITUTION:One end and the other end are attached to a catcher 8 and a jack 27, respectively, an energizing member 28 for energizing the catcher 8 and the jack 27 in the direction for separating them is provided, and also, each fitting point of the energizing member 28 and a center pin B are placed so as to be positioned on roughly one straight line at the time of hammer stop. Accordingly, force by the energizing member 28 does not work on the direction for floating the hammer. Also, since the catcher 8 and the jack 27 are energized in the direction for separating them by the energizing member 28, when the next key depressing operation is executed, the upper end of the jack enters quickly into the lower face of a butt 5. In such a way, continuous beating can be executed at a high speed.</p> |
