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

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