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