大钢琴 - 美国大都会艺术博物馆展品查阅

品名（中）	大钢琴
品名（英）	Grand Piano
入馆年号	1980年，1980.428
策展部门	乐器（Musical Instruments）
创作者	John Broadwood & Sons
创作年份	公元 1808
创作地区	英格兰, 伦敦（England, London）
分类	齐瑟敲击钢琴（Chordophone-Zither-struck-piano）
尺寸	Case 长 (perpendicular to keyboard): 227.3 厘米 (89-1/2 英寸); Case 宽 (parellel to keyboard): 106.9 (42-1/8 英寸); Case 高 (包含 legs): 91 厘米 (35-7/8 英寸): Souding 长 of top string: 7.4 厘米 (3 英寸); Sounding 长 of bottom string: 172.2 厘米 (67-7/8 英寸); Sounding 长 of c2 (shortest): 27.3 厘米 (10-3/4 英寸); 3-octave span: 49.1 厘米 (19-3/8 英寸) Stand: 高 23 英寸宽 40 1/2 英寸长 67 英寸
介绍（中）	在布罗德伍德于1812年去世之前，出口使他的钢琴举世闻名。随着孙子变宽以容纳更多的按键，安装在腿上的踏板被移到了键盘中央的支架上。这个5-1/2八度音阶大音阶的左踏板将动作横向移动两步，以获得una和适当的corde效果。中央和右侧踏板提升低音和高音减震器。钢支撑横跨音锤间隙，以防止弦张力向内拉动调谐销块。但挂接销导轨开裂，需要用黄铜板进行修复。此后，随着钢琴变得更大，承受更大的压力，金属加固在维持更高的音高标准和对更大功率的需求方面发挥着越来越大的作用，这是整个19世纪的趋势技术说明：红木贴面，深色面板，边缘有浅色条纹和镶嵌；栈桥支架，带有固定在前腿上下担架上的锯齿状踏板琴；3个踏板；通过安装在右键盘端块上的滑动挡块调节una或duo-corda的左移动作（滑动挡块缺失）；中央和右侧踏板控制分开的阻尼器；分区位于中间C：顶部14个阻尼器已从其导轨上移除；带弹簧擒纵机构千斤顶的英制动作；反向检查和调整放线的规定；挂接轨高音部分的黄铜板不是原装的，毡锤覆盖物或琴弦也不是原装的；罗盘FF-c4。
介绍（英）	Before Broadwood died in 1812, export had made his pianos world-famous. As grands grew wider to accommodate more keys, pedals, which had been mounted on the legs, were moved to a mounting in the center of the keyboard. The left pedal of this 5-1/2 octave grand shifts the action sideways in 2 steps for una and due corde effects. Center and right pedals lift the bass and treble dampers. Steel buttresses span the hammer gap to prevent string tension from pulling the tuning pin block inward. But the hitchpin rail cracked, necessitating repair with a brass plate. Henceforth, as pianos became larger and subject to greater stress, metal reinforcement played an increasing role in sustaining higher pitch standards and demand for more power, trends felt throughout the 19th century. Technical description: Case veneered in mahogany with dark panels bordered by light banding and inlay; trestle stand with fret-sawn pedal lyre fixed to upper and lower stretchers bridging front legs; 3 pedals; left shifting action for una or duo corda regulated by sliding stop mounted on right keyboard end block (sliding stop is missing); center and right pedals control divided dampers; division is at middle C: top 14 dampers have been removed from their guides; English action with spring loaded escapement jack; back checks and provision for adjusting let-off; brass plate in treble section of hitchpin rail is not original, nor are felt hammer coverings or strings; compass FF-c4.