EDISON LABORATORY Edison National Historic Site West Orange, New Jersey Volume 1

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1 liter RETORT (on table) Voucher 40, January 1910. Celluloid was inorganic chemical first developed artificial substitute for ivory that had great potential recording surface.Table Chemicals For Records. A mortar and pestle would used break the materials use and there would also equipment heat, mix and filter record compounds. Reproduce. Glass RETORT (on table) with SUPPORT and STAND Figure 34. Glass CONTAINER, large (on table) Figure 34. MORTAR and PESTLE (on table) Standard laboratory equipment. 190 . Acquire. Use EDIS 3209. Object and Location Evidence Recommendation Table 7 LAB TABLE with RACK (in place) Figure 34. Use EDIS 351. Use E-3436. was used to make Edison’s Blue Amberol records. BUNSEN BURNER (on table) with STAND Standard laboratory equipment Use EDIS 6131 (Bunsen burner) and EDIS 6150 (stand). Brass Filter SCREENS (on table) Standard laboratory equipment. Use E-1436 (glass retort), E- 1471 (support), and EDIS 6085 (stand). Many the substances this table were important ingredients Edison cylinders and discs: wood flour and asbestos filler, stearate and other fatty acids for waxes used cylinders, lamp black give the record surface the shiny black color, and celluloid. Aylsworth was also testing batches phenol for use making condensite. 1910 was the best material for records yet devised; was relatively easy produce, provided a highly satisfactory recording medium and was difficult break. Shellac, organic product derived from insect secretions, was another record compound under examination this laboratory. such important figure the chemical experiments Edison’s laboratory that has been included the plan, even though did most his work his private laboratory. This table furnished the work place of Jonas Aysworth, the chemist charge the experiments develop materials to be used phonograph records