1989年3月号西德《乐器》杂志报导了一款新型立式钢琴击弦机。这是一种复震式的立式钢琴击弦机(参见附图)。它在可调的联动杠杆(40)上,除装有推动弦槌运动的顶杆(28),还装有一个复震杠杆(43)。复震杠杆通过轴架 March 1989 West German “Musical Instruments” magazine reported a new type of vertical piano action machine. This is a recumbent vertical piano stringing machine (see photo). It is equipped with an actuating lever (43) on an adjustable linkage lever (40), in addition to a jack (28) for pushing the movement of the hammer. Commutation lever through the shaft frame