Alps Electric Co., Ltd.

Yoichi Yasuma

Tasuku Noji

A plurality of fine tuning elements are mounted on a disc which is rotatable by a selector shaft so that a selected tuning element is in a tuning position. Each tuning element comprises a screw with a gear mounted at the end thereof. A tuning shaft is rotatable and translatable on the selector shaft and has an actuator disc and a tuning gear fixed thereto. An idler shaft has first and second gears fixed thereto and is normally held in a tilted inoperative position by a spring. The tuning shaft is manually translatable so that the actuator disc engages with the idler shaft and tilts the same against the force of the spring in such a manner that the first and second gears engage with the tuning gear and the gear of the selected tuning element respectively to drivably connect the tuning shaft to the screw of the desired tuning element.

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Soma, Japan

Yoichi Yasuma