A night photograph Edison leaning the bench the precision shop, taken by
Underhill about 1905 (figure 117) shows precision bench lathes, vises, stools, and
the general clutter working shop.388/8, 2515 Edison
NHS collection, not reproduced this report. These once supported the upper end the plank partition around the
experimental rooms.388/21, 2660; 10.466 comparison photographs show that
the north aisle remained largely the same.
465 MRH TAE, February 24, 1914 (in 1914, Batteiy, Storage--Testing).
138
. Only
room and enclosure around the elevator remained.466
An October 1913 inventory and photographs taken April 1914 show much
larger complement machine tools.
Dramatic changes took place sometime between 1904, when the Byron photos
were taken, and 1913.
4Sfi "Edison Laboratory, Inventory taken October 1913, Second Floor Machine Shop," Edison NHS. The interior one those rooms shown 1904 Byron
photo Charles Dally and the X-ray machine (figure 128).388/16, 2528; 10.388/14, 2525; 10.from that direction. Most the experimental rooms were dismantled during
this period, nearly doubling the open space the precision machine shop. The stairs were done by
April, when the photographs were taken.464
464 The interior room shown figure 129 from the April 1914 series.388/23, 2677; and 10.
487 See figures 116, 118, 119, and 121.
In February 1914, Miller Reese Hutchison ordered that stairway built
between the first and second floor machine shops, order reduce traffic the
stairs the library.
Figure 123 shows double row triangular wood stringers attached the
ceiling. Similar cleats are also visible from partitions that divided
the rooms one from the other.467 The newly opened south aisle,
shown figure 122, contained three shapers, two lathes, filing machine, and a
drill press. See
photographs 10. double
spindle drill press, table saw, rolling mill, and screw press faced the south side of
the center aisle, while long tinsmith’s bench occupied the north side. Tables, probably used for assembly work, perhaps some
experimental activities, occupied the eastern bay the south aisle
