Key for block diagrams inertia_operation.png, short_recoil_operation.png, and long_recoil_operation.png I, the copyright holder of this work, hereby publish...
1 - Fig.1, Fig.2, Fig.3.png US592641A Automatic Piano-Player (1897) William D. Parker, Edward H. White. p.2 - Fig.4, Fig.5.png US592641A Automatic Piano-Player...
