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

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188 . The container was sheathed steam jacket heat the mixture phenol and formaldehyde and steam pipes were attached. Reproduce. was under contract Edison and he would have supervised this work Building 2. Electric MOTOR (in place) Figure and physical evidence. PULLEYS (in place) Figure and physical evidence. This created the thick resin, called condensite, which when cooled could used records. Use EDIS 7415. The blank contained wood flour, lamp black, phenol resin, denatured alcohol and hexamethylene tetramine. It was pressure container which vacuum could created. Use EDIS 7411. Use EDIS 7374. The varnish was made of phenol, paraphenylindiamione, denatured alcohol, pentachlorophenol, hexamethylene tetramine and sandarac-an organic resin.612 As the expert phenol resins, Jonas Aylsworth would have supervised this operation. Reproduce. vacuum pump was placed nearby. Object and Location Evidence Recommendation Table 6 LAB TABLES, (in place) Figure and physical evidence.Table Phenol Production. 612 Leah Burt, "Chemical Technology the Edison Recording Industry," Journal ofthe Audio Engineering Society (November 1977), pp. PHENOL CONDENSER (on table) Figure 34. VACUUM PUMP (on table, connected drive shaft) Attached phenol condenser. 716-17; also 1914, Phonograph, Record, Manufacture. Use EDIS 350 and EDIS collection. The Edison Diamond Disc was composed core called the powder blank, and a varnish which set into the hard recording surface. the bottom the container was valve draw off the hot liquid and manhole cover attached large bolts was the top. The condensing distilling machine was located this table. DRIVE SHAFT (in place) Figure and physical evidence. Phenol was pioneer form plastic and was the main ingredient the condensite used make the recording surface Edison Diamond Discs. Phenol resins were used in both these parts. this time was not member the staff this building; had his own laboratory his house Orange. The various elements the mixture were pumped and then condensed under pressure and high heat