| 摘要 |
There is described an improved keyframe side pin guide for pianos and the like musical instruments wherein means are provided for preventing warp curving of the front part or front rail of the keyframe and for holding the same constantly in closely contacting relationship with the key bed on which the keyframe is supported, the means comprising a pin projecting from the keyframe, a pin-receiving member having a vertically-extending slot therein, the pin being inserted in the slot, a guide piece slidable along the slot and resting on the pin, and a resilient member exerting a constant downward pressure on the guide piece, so that the pin is firmly pressed toward the key bed owing to the downward biasing force of the resilient member.
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