Kawai Gakki Seisakusho Co., Ltd.

Fumitaka Takahashi

An action mechanism for the piano in which a jack is resiliently and rotatably mounted on a rear portion of a key, a jack receiver and a push-out protrusion are provided on a hammer support member that is rotatably mounted at its one end on a hammer shank rail via a flange over the key, and when the key is depressed, the hammer is turned toward the sound producing member owing to the engagement of the tip of said jack and said jack receiver and, at the same time, the engagement between the jack and the jack receiver is released by the push-out protrusion.

Action mechanism for the piano

An instrument for practicing multiplication to be used by children, in which there is a base plate, a printed plate fixed on the base plate, a group of horizontal cursors slidably installed on the base plate, a group of vertical cursors placed on top of the horizontal cursors and slidably installed on the base plate, and a top cover grass plate. These element are arranged as to calculate multiplication by sliding some of these two group of the cursors. One group of the cursors are given a sequence of numbers 1 to 9, and the other group of cursors are given the same sequence of numbers 1 to 9. When a number (X) of one group of cursors and a number (Y) of the other group of cursors are slided to one direction, a figure corresponding to the answer of X by Y and a group of marks equal to the answer are displayed on the instrument.

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Shizuoka, Japan

Fumitaka Takahashi