Piano having electrically controlled note sustaining means

Claim 1

IN A PIANO, THE COMBINATION COMPRISING A PLURALITY OF INDIVIDUAL NOTE PLAYING MEANS, A PLURALITY OF ELECTRICALLY ENERGIZABLE MEANS SEVERALLY OPERATIVELY ASSOCIATED WITH SAID NOTE PLAYING MEANS AND EACH OF SAID ELECTRICALLY ENERGIZABLE MEANS WHEN ENERGIZED BEING ARRANGED TO ACTUATE THE CORRESPONDING ONE OF SAID NOTE PLAYING MEANS, A SOURCE OF ELECTRICAL ENERGY, AND A PLURALITY OF INDIVIDUAL SOSTENUTO CIRCUIT MEANS SEVERALLY CONNECTED TO SAID SOURCE AND ELECTRICALLY ENERGIZABLE MEANS AND COLLECTIVELY INCLUDING NORMALLY OPEN GANG SWITCH MEANS SELECTIVELY CLOSEABLE, SAID GANG SWITCH MEANS HAVING NO MECHANICAL CONNECTION TO SAID INDIVIDUAL NOTE PLAYING MEANS AND BEING ACTUATED INDEPENDENTLY THEREOF, SAID NOTE PLAYING MEANS SEVERALLY CONTROLLING THE CONNECTIONS OF SAID CIRCUIT MEANS WITH SAID SOURCE, WHEREBY ACTUATING ONE OF SAID NOTE PLAYING MEANS TO PLAY A NOTE AND WHEN SAID GANG SWITCH MEANS IS CLOSED COOPERATE TO MAINTAIN THE CORRESPONDING ONE OF SAID ELECTRICALLY ENERGIZABLE MEANS ENERGIZED TO SUSTAIN SAID NOTE.