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公开(公告)号：US4953433A
公开(公告)日：1990-09-04
申请号：US421374
申请日：1989-10-16
IPC分类号： G10C3/22
CPC分类号： G10C3/22
摘要： The subject grand piano action, in common with all piano actions, comprises driving apparatus comprising the key and wippen levers, drive apparatus comprising the hammer assembly and apparatus interconnecting the two and providing for disengagement and reengagement of the driven with the driving apparatus. In the subject action the interconnecting apparatus comprises the jack, pivoted to the free end of the wippen lever and a repetition spring pivoted at both ends, one end at the free end of the jack, the other on the hammer shank. When the key is played and the free end of the wippen lever rises, a cam on the side of the jack facing away from the wippen lever engages a button mounted on the hammer rail and this engagement forces the end of the jack along a hard felt cam on the hammer knuckle. The cams on the jack and hammer knuckle are contoured such that the jack end and the jack actuation button remain in contact or close proximity to their respective cams throughout engagement and dis-engagement of the jack. There are two mechanical adjustments and one spring adjustment in the action. This configuration enables a simpler, quieter, easier to adjust action which stays in adjustment for longer periods of playing time and with no sacrifice in performance.
摘要翻译： 与所有钢琴动作相同的主题大钢琴动作包括包括键和摇杆的驱动装置，包括锤组件的驱动装置和将两者相互连接并提供驱动装置的分离和重新接合的装置。 在主体动作中，互连装置包括枢转到摇摆杆的自由端的千斤顶和在两端枢转的重复弹簧，一端在千斤顶的自由端，另一端在锤柄上。 当琴键被弹奏并且摇杆杠杆的自由端上升时，千斤顶侧面的凸轮面向离开摇杆杆的方向接合安装在锤轨上的按钮，并且这种接合迫使千斤顶的端部沿着硬毡 凸轮在锤指关节。 千斤顶和锤指关节上的凸轮具有轮廓，使得千斤顶端和插座致动按钮在千斤顶的接合和脱开接合期间保持接触或靠近它们各自的凸轮。 在动作中有两个机械调整和一个弹簧调整。 该配置使得能够更简单，更安静，更容易地调节动作，其保持在更长的播放时间的调整中，并且不牺牲性能。
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公开(公告)号：US5042354A
公开(公告)日：1991-08-27
申请号：US467023
申请日：1990-01-18
IPC分类号： G10C3/16
CPC分类号： G10C3/161
摘要： The subject action is a modification of the traditional upright action. The traditional jack spring is eliminated. Its function is assumed by a jack/repetition spring, which is a compression spring adjustably mounted between the jack near the end that engages the hammer butt and a pilot attached to a threaded shaft through the back stop portion of the hammer assembly. The hammer return spring mounting enables adjustment of the range of force applied by the spring to the hammer. The force range magnitude is such that the hammer return torque is commensurate to the torque that would be applied by gravity if the hammer shank were mounted horizontally instead of vertically. The operating force of the jack/repetition spring is related to that of the hammer return spring in such a way that re-engagement of the jack with the hammer butt is assured before hammer return beyond the back-checked point. The ends of the jack/repetition spring are geometrically located to allow the elements of the action to keep in intimate contact after re-engagement, making possible the elimination of the bridle tape and wire, and to provide a function that feels smooth and tight, not loose. The interaction between the springs as applied produces enough return force on the key to allow use of weights in the played end of the key to provide the desirable inertial resistance of a grand action to the player's touch on the keys. With the subject action properly adjusted, the hammer assembly rests upon the jack, rather than the traditional rest rail and therefore there is space between the hammer shank and hammer rest rail when the action is at rest.
摘要翻译： 主题行为是传统直立动作的修改。 传统的千斤顶弹簧被淘汰。 其功能由千斤顶/重复弹簧来承担，该弹簧是可调节地安装在靠近锤子对接端的端部附近的千斤顶之间的压缩弹簧和通过锤组件的后挡块部分连接到螺纹轴的引导件。 锤回位弹簧安装使得能够调节弹簧施加到锤的力的范围。 力范围大小使得如果锤柄水平而不是垂直安装，则锤击返回扭矩与由重力施加的扭矩相当。 千斤顶/重复弹簧的操作力与锤复位弹簧的操作力相关，使得在锤返回超过后检点之前，可以确保千斤顶与锤子对接头的重新接合。 千斤顶/重复弹簧的端部几何定位以允许动作元件在重新接合之后保持紧密接触，从而可能消除绷带和线，并且提供感觉平滑和紧密的功能， 不松动 弹簧之间的相互作用在钥匙上产生足够的返回力，以允许使用键的弹奏端的重量，以提供对玩家对钥匙的触摸的宏伟动作所需的惯性阻力。 在主体动作适当调整的情况下，锤子组件靠在千斤顶上，而不是传统的休息轨，因此当动作静止时，锤柄和锤子休息轨之间有空间。
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公开(公告)号：US4896577A
公开(公告)日：1990-01-30
申请号：US104277
申请日：1987-10-02
CPC分类号： G10C3/161
摘要： The subject action is a modification of the traditional upright action. The traditional jack spring is eliminated. Its function is assumed by a jack/repetition spring, which is a compression spring adjustably mounted between the jack near the end that engages the hammer butt and a pilot attached to the back stop portion of the hammer assembly. The hammer return spring mounting enables adjustment of the range of force applied by the spring to the hammer. The force range magnitude is such that the hammer return torque is commensurate to the torque that would be applied by gravity if the hammer shank were mounted horizontally instead of vertically. The operating force of the jack/repetition spring is related to that of the hammer return spring in such a way that re-engagement of the jack with the hammer butt is assured before hammer return beyond the back-checked point. The ends of the jack/repetition spring are geometrically located to allow the elements of the action to keep in intimate contact after re-engagement, making possible the elimination of the bridle tape and wire, and to provide a function that feels smooth and tight, not loose. The interaction between the springs as applied produces enough return force on the key to allow use of weights in the played end of the key to provide the desirable inertial resistance of a grand action to the player's touch on the keys. With the subject action properly adjusted, the hammer assembly rests upon the jack, rather than the traditional rest rail and therefore there is space between the hammer shank and hammer rest rail when the action is at rest.
摘要翻译： 主题行为是传统直立动作的修改。 传统的千斤顶弹簧被淘汰。 其功能由千斤顶/重复弹簧来承担，千斤顶/重复弹簧是可调节地安装在接近锤头踵的端部附近的千斤顶之间的压缩弹簧和附接到锤组件的后止挡部分的导向器。 锤回位弹簧安装使得能够调节弹簧施加到锤的力的范围。 力范围大小使得如果锤柄水平而不是垂直安装，则锤击返回扭矩与由重力施加的扭矩相当。 千斤顶/重复弹簧的操作力与锤复位弹簧的操作力相关，使得在锤返回超过后检点之前，可以确保千斤顶与锤子对接头的重新接合。 千斤顶/重复弹簧的端部几何定位以允许动作元件在重新接合之后保持紧密接触，从而可能消除绷带和线，并且提供感觉平滑和紧密的功能， 不松动 弹簧之间的相互作用在钥匙上产生足够的返回力，以允许使用键的弹奏端的重量，以提供对玩家对钥匙的触摸的宏伟动作所需的惯性阻力。 在主体动作适当调整的情况下，锤子组件靠在千斤顶上，而不是传统的休息轨，因此当动作静止时，锤柄和锤子休息轨之间有空间。
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