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

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The large cabinet with glass doors which was placed front the partition was moved into the balance room where now stands. At the bottom the container was valve draw off the hot liquid and a manhole cover attached large bolts was the top. These were used store chemicals and were arranged under system that grouped similar types chemicals together. publicity was given this project this machine.346 There are photographs the interior the brick room and evidence about its use. Secrecy was therefore essential. The condensite project was carried out great secrecy, for just few miles away from West Orange, Leo Baekeland was carrying out experiments with the same phenol resins. vacuum pump was placed nearby. Two large machines were brought into the laboratory part the disc record project. . 102 348 See figure 26. A series wall cabinets are visible photographs taken during this period. The first was condensing distilling machine used make the phenol resins used make the disc blanks. Baekeland was the lead developing these early plastics and had strong patent position. was gone 1906. The container was sheathed steam jacket heat the mixture and steam pipes were attached. was pressure container which a vacuum could created. This machine would have been made the laboratory staff from plans drawn up experimenters—probably Edison, Sam Moore, and Fred Ott—and copied from existing distilling machines and heated mixers. This created the thick resin, called condensite, which when cooled, could made into blanks. 1910 and 1911 Edison negotiated with Baekeland license his patents while simultaneously attempting circumvent these patents and set up his own production operation. Photographs show two experimental tables and one table fitted with drawers within the room (figures and 19). The various elements the mixture were pumped and then condensed under pressure and high heat. The mixtures concocted Aylsworth 345 NPS, 'HSR, Physics Laboratory, Building 1,” see also figure 18. The balance room contained microscopes evaluate crystals developed experiments recording media and to examine the surface disc and cylinder masters.346 The use brick building material, where cheap pine panelling was used everywhere else the laboratory, significant, perhaps prompted risk fire from experiments undertaken this room. There are three more photographs this area Photograph Album 7.through door the brick room. Six cabinets the east side the chemistry laboratory held chemicals, and three the west side held glassware