370 Ibid. Handbook (Cincinnati: Deen, 1901). 4," The individuals the photographs were
identified Norman Speiden, but not known what based his information. The Noyes book held the library of
the New Jersey State Archives, Trenton, NJ; see also NPS, "HSR, Metallurgical Laboratory, Building No.G. 623-628, identifies the group itself the "insomnia
squad" and their project the diamond disc record., also K.370
In 1924 large disc press was installed the front part Building This could
be the ’’powder blank" machine which was still there 1940. 4,"
p. Noyes, The C.W. 4.369 From around 1910 1912 filming for the Edison Educational
Film project was also carried out this building.
389 NPS, "HSR, Metallurgical Laboratory, Building No.technicians work here. The first space was devoted to
perfecting the production Diamond Discs. The mechanical press set here
around 1914 was probably still operation the effort refine mass production
of discs, and lower the cost, was carried until the time World War A
lean-to erected next the building 1916 was used mix bulk chemicals for
records., 8.368 A
photograph from 1912 shows group employees who worked this project
(figure 46).N.
Building Period III: 1915*1931
The 1918 analysis floor space divides this building into two equal halves: "Disc
Record Experimental” and Edison experimenters.
Ill
The 1962 ’’Historic Structures Report” stated that experiments the Edison disc
record began here 1910.371
Edison’s experiments during this period covered everything from testing audions
(vacuum tubes) devising new types storage batteries. Much his work was
concerned with the Diamond Disc record, especially the campaign reduce
surface noise playback.
368 Frank Dyer Weber, December 15, 1909 (in 1909, Phonograph—General). was also heavily involved designing automatic
.
387 C.W.367 The rest the building was taken with
equipment manufacture and duplicate cylinder records. Berggren Norman Speiden, January 23, 1940, Historical Research Dept. However, 1909 memorandum from Frank Dyer
clearly indicates that the initial work was done the Glen Ridge factory.
371 Ibid. article Oliver
Simmons Munsey’s Magazine for September 1916, pp
