east side, the bench and smaller cabinet next the two concrete floor slabs, and
the larger cabinet abutting the south wall.318
318 Fessenden, "The Inventions Reginald Fessenden,” Radio News (August 1925), 156. Hence, iron and
steel were entirely eliminated its construction, copper being used for fixtures for
steam and water piping, and indeed, for all other purposes where metal was
employed.319 This
laboratory provided some the most significant advances electrical supply
technology the 1880s and 1890s. Although the front door visible, not possible gauge the
dimensions the two offices that Fessenden claims were either side the
aisle.
This building was called the "Galvanometer Room" Edison and his men. Fessenden’s sketch map the laboratory appeared around 1888,
drawn from memory many years later, clearly shows the division the front of
this building into two halves, possibly experimental rooms office space.. A
special rack and control panel was devised evaluate the performance of
incandescent bulbs; was probably laid out Building This equipment was
later installed the third floor Building what was called the lamp testing
room.. These were built
up height about two and half feet, and each was surmounted with single
heavy slab black marble. The
notebooks ofArthur Kennelly and the shop orders executed his department
indicate great deal construction: motors, dynamos, alternators, transformers,
meters, switches, and experimental apparatus were built for Edison.
Although much the equipment the piers related electrical measurement,
the work this laboratory extended beyond measurement and testing.
Building Period II: 1901-1914
Dyer and Martin describe Building appeared 1910:
In order provide rigid resting-places for the numerous and elaborate instruments
[Edison] had purchased.
By the same measure, the sheer amount electrical testing contracted Edison
forced him carry out some this work outside the galvanometer room.
319 Notebook N-87-11-24.the building was equipped along three-quarters its
length with solid pillars, tables, ofbrick set deep the earth.
The front part this building, near the main entrance, cannot seen clearly in
this picture. cement floor was laid, and every precaution was
taken render the building free from all magnetic influences, that would be
suitable for electrical work the utmost accuracy and precision..Unfortunately, however, for the continued success Edison’s elaborate
90
.
