A HISTORY OF EDISON'S WEST ORANGE LABORATORY 1887-1931

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As more phonographs were put use, more "bugs" emerged and even the brushes the electric motor version had be redesigned avoid damage "ignorant people" who turned the cylinder backwards. tried every conceivable combination oils and fats find hard substance that would take and hold the impression from the phopnograph stylus. The number adjustments the recorder/reproducer assembly was reduced, yet the complaints about the difficulties operation continued. During 1888 Aylsworth labored mixing, heating, and testing hundreds wax compounds. Jonas Aylsworth, industrial chemist. One the first business users the perfected phonograph was Edison's secretary Tate. Each subsequent model the phonograph had better reproduction and was more rugged. The smallest imperfection bubble the compound— invisible to the eye— caused crackle that could distinctly heard as the record played. The composition the wax was the speciality Dr. was slowly gaining . One user described the reproduction the phonograph "but parody the human voice" that required "careful adjustment practised hand" to understood. found that some the chemicals the wax cylinder tarnished the metal stylus the recorder and 30 rendered the machine useless.IV-18 The wax cylinder was critical part the phonograph and caused many the operating problems. amount of R&D the West Orange laboratory could defuse the major criticism poor reproduction