| 摘要 |
<p>An improved device for providing the so-called magic touch effect during a double repetition, in an upright piano, is characterized in that said device comprises a plurality of keys, said keys being swingably mounted on a keyboard frame and supporting, each, a suitably inclined slanted drive element, which can be screw adjusted and is intercoupled to a slanted swinging arm, operating as control angular variation continuous escapement energy lever in turn pivoted to an abruptely clockwise downstream slanted main bridge operatively swinging with the escapement lever which is coupled to a butt roller of a hammer, pivoted to a first pillar element, in turn supporting a plurality of adjusting buttons for adjusting a first and second escapements. To said main bridge assembly being coupled a second pillar element, to which is pivoted the lever of the second escapement supporting the adjusting button for adjusting its operating angle, cooperating with the lever of the first escapement, which in turn supports and adjusting button.</p> |
