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

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