See (D-87-55) for additional correspondence.
The two engines the power house ran series Edison dynamos which were
brought the laboratory December 1887.
57 Charles Bachelor F.
M Edison's drawings the system are 1887, WOL-General, D-87-55. Underwood, October 21, 1887 (in 1887, WOL—Suppliers, General, D-87-
56).
56 Samuel Insull (Edison Machine Works) Charles Batchelor, December 12, 1887 (in 1887, WOL—
Suppliers, Edison Machine Works, D-87-57). There was 100 volt
direct current system all rooms running from 3/8-inch wire. Figure 146 photograph which shows this
arrangement was around 1890. Although this date has traditionally been
the one given mark the opening the laboratory certainly not the only date that could used. The line shaft the bottom part the
drawing (clearly shown the photograph) provided source power for other
dynamos which were brought into the building for testing and experiments. Figure 145 diagram showing
how these were linked 1889.November 25, 1887, all engines had been installed, steam had been raised in
the boilers and the large brick chimney rising out Building was belching
smoke-work had begun the Edison laboratory West Orange."67
Charles Batchelor installed this equipment and with the help several
experimenters began wire the laboratory complex.58 Batchelor dug
trenches the courtyard run underground cables from Building the rest of
the lab.66 The
switchboards were installed the basement Building Batchelor wrote that
the laboratory had complete Electric Lighting station besides shop. One the drawings in
Batchelor’s hand.H.
27
.55
55 Charles Batchelor diary, catalog 1337, November 25, 1887. Each laboratory building
was wired for several different voltages and amperages.
The Edison Machine Works provided the laboratory with range the dynamos
in production the time:
Edison Amp "Municipal” Dynamo
2 #10 "Domestic" dynamos
1 #20 dynamo
1 dynamo with special armature
1 dynamo with special armature
This equipment was delivered with the switches, circuit boards, meters, and
regulators required set and run central station system.
Batchelor writes “now can begin work" October for example, and there are numerous other criterion
for marking the opening the lab
