公开(公告)号：US4244268A

公开(公告)日：1981-01-13

申请号：US38791

申请日：1979-05-14

申请人： Jairus P. Barham ,  Norman L. Meyer

发明人： Jairus P. Barham ,  Norman L. Meyer

IPC分类号： G10C3/22 ,  G10C9/00 ,  G10C3/00

CPC分类号： G10C9/00 ,  G10C3/22

摘要： A hammer strike line adjuster for use with a grand piano comprises a metallic, generally U-shaped bracket, a worm gear rotatably received within a pair of aligned apertures formed in the side walls of the bracket and a shift pin having a first end secured to the piano key frame assembly and a second end engaging an annular recessed portion of the worm gear for movement together therewith. The apparatus, which is disposed between the piano key frame assembly and treble arm and underlying the piano key block, is operative for accurately adjusting the position of the piano hammer strike line in response to rotation of the worm gear.

摘要翻译： 与大钢琴一起使用的锤击线调节器包括金属的大致U形支架，蜗杆可旋转地容纳在形成在支架的侧壁中的一对对准的孔内，换档销的第一端固定到 所述钢琴键框组件和与所述蜗轮的环形凹部接合的第二端与所述蜗轮相啮合。 设置在钢琴键框架组件和高音臂之间并位于钢琴键块下方的装置用于响应于蜗杆的旋转来精确地调节钢琴锤击打线的位置。