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