The Talking Machine Patent Archive

Patents you could hear

Expression control

Patent drawing of a player-piano expression-control attachment showing a gated box with multiple air passages, a pivoting operating handle with a dynamics scale from pianissimo to fortissimo, and linked rods and springs connecting to a supplemental valve.ATTACHMENT FOR EXPRESSION OR ACCENT CONTROLLING MECHANISMS FOR MECHANICAL MUSICAL INSTRUMENTS.Robert W. Pain · February 23, 1904Patent drawing of a player-piano mechanism showing a paper music roll, tracker board, divided wind-chest with valve casings, and two pivoted hand levers positioned near an indicating scale for controlling bass and treble tension independently.MEANS FOR CONTROLLING THE TENSION IN WIND WAYS OF MECHANICAL-MUSICAL-INSTRUMENT PLAYERSJoseph H. Dickinson · January 17, 1905A technical line drawing of a player-piano mechanism showing a hammer-and-key action linked by rods and springs to a horn-shaped pneumatic bellows, a coil spring, a secondary tilted pneumatic labeled 24, and a small valve cylinder with a manual button labeled 34 at the bottom, all connected by numbered ducts and levers.AUTOMATIC MUSICAL INSTRUMENTCharles F. Stoddard · January 21, 1919