THE INTERIOR CONSTRUCTION OF A PIANO PLAYER. Fig. 2Sectional Model Showing Tracker Board Tubes Primaries Secondaries Diaphragm Pneumatics and Striking Fingers. Fig. ITransverse Section Showing the Mechanism and Fig. 4sack for Testing Player Actions. 00 Power Pneumatics. Fig. 13Otie of Several 4ang Drills Boring Air Duets in Edge of Well-Board., scientific american, 1906-12-01
THE INTERIOR CONSTRUCTION OF A PIANO PLAYER. Fig. 2Sectional Model Showing Tracker Board Tubes Primaries Secondaries Diaphragm Pneumatics and Striking Fingers. Fig. ITransverse Section Showing the Mechanism and Fig. 4sack for Testing Player Actions. 00 Power Pneumatics. Fig. 13Otie of Several 4ang Drills Boring Air Duets in Edge of Well-Board., scientific american, 1906-12-01
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