The Salt Lake herald. [volume] (Salt Lake City [Utah]) 1870-1909, 1881-04-01
THE ELECTRIC LIGHT.
A Fine Exhibition on the Lower
Part of Main Street.
And a Successful Test


have been in active progress fol
some time, has been anticipated
By a premature report that test
would be made ON Wednesday night
a large number of persons, who as
sembled on the street to witness IL
were disappointed. 1t had been an
nounced definitely that an exhibit
ton would take place last night, and
shortly after dark persons began t.
assemble from all parts of the city
to behold the wonderful light. Hall
past s o'clock was the hour SCI
for the lighting, and by that time
the sidewalk in the vicinity OF
Walker Brothers store was almost
| jammed with an eXpectant thrOng
| The Walker House had a light IL
front, Walker Brothers had one also,
as well as Mr.. Lipman in front OF
his clothing store. This made three
lights on the street within radius
of half a block. Precisely at the
hour stated for the commencement
of the exhibition a faint blue spark
was seen to appear simultaneously
in these three outdoor globes, and
in few seconds they had developed
into the most beautiful and brightest
of lights, illuminating quite large
| radius on the streets and side
walks. AT the same instant, also,
though they could not be seen from
the outside. thirty-seven other lights,
| i'm the Walker House, w alker Bros
store, the White House, in Joslin 4
Parks jewelry store, in some saloons
and a number of clothing places
were started up; and a murmur of
| admiration ran through the wonder
ing crowd as the dazzling light
poured upon them. The light is
brilliant almost beyond description,
and in the main was free from the
pickering and the alternating in
creaSing and lessening brightness
which characterized the exhibition
some months ago inside and in front
of the Coop. store. The lamps in
front of Walker Brothers store and
Lipman's clothing establishment
were unsteady, and that at Walker
Brothers nearly went out. This.
however, is reported as due to the
fact thai in the great rush which
has attended the hanging of the
lamps and the running of wires, the
carbons were not properly adjusted,
and in the case cited it touched the
rod. This statement is sustained by
the evident proof to be seen in the
lamp in front of the Walker House,
which burned with marked steadi-
ness; and by those in the
stores, saloons and halls. The
light was better inside than
out. In the stores it was re-
markably brilliant, Illuminating
every corner, and making all things
within a reasonable radius as clearly
defined as in daylight, if not more
so. In the store of JoSlin Il Park 1t
was more than beautiful, and with
the ground glass globe, was relieved
of the dazzling element which char
acteriZed the exhibition on the
streets. In the billiard halls, bar
rooms, McKimmins' livery stable,
and in the stores, the test was
equally satisfactory with that men
toned.
OF course, the crowd had much to
say regarding it, and there were OBJ
jections, the only one finding any
general response being that it actu-
ally gave too much light; whether
this can be a fault is a question, or
it may arise from the public not
being accustomed to it, which, adj
hitting the surmiSe to be justly
founded, will wear away with assO-
citation. Others said it gave them
headache; these, however, were
few and it may have been the fault
of the persons instead of the light.
Those interested in the company,
especially Mr.. Ruthrauff, agent. and
Mr.. Upper, electrician, are more
than delighted with the success of
the test; and they have the best evil
dence that those who have sub
scribed for the light are pleased
with it also. All who have taken
it, express unbOunded satisfaction,
and as a result of the exhibition
several were induced last night to
order lights for their establish
mentS.
During the afternoon test of the
machinery was made, which was
also satisfactory; and last evening a
few persons were admitted to the
building where the engine and gen.
orators were at work, and beheld
the manner in which the wonder
fully brilliant light is produced.
The exhibition last night was made
on one circuit, the only one COM
pleted. There will be two other
circuits, which, it is expected, will
be in readiness on Saturday night,
in which event the whole city, so far
as it is to be for some time to come,
will be illuminated by the electric
light. If not on Saturday, the gen.
eral illumination will take place on
Monday evening, succeeding which
time the light will be run steadily
every night. Until that time no
further Examinations will take
place. Following is an attempt to
explain how the light is produced,
but in such an intricate matter, it is
next to impossible to give an ex-
PLANTATION which the public at large
can comprehend.
In the works are three large gen.
orators capable of furnishing each
sufficient current for forty lights of
2,OOO-candle power each, or 100
lights in the aggregate. In each
generator Faraday's well-knOwn
discovery of induction is used, a
large wheel or armature revolving
in field of four powerful magnets
producing the current
The armature consists of a fiat
ring of soft cast-irOn, revolving in
its own plane. This ring is COM
posed of two or more parts, each
provided with series of grooves,
and insulated from each other. all in
such a manner as effectually to pre-
vent the induction of currents in
the iron itself when it is revolved in
magnetic field. On this ring are
wound eight bobbins of armature
conductor, whose planes radi-
ate from the axis of rotation.
The field magnets of the machine
face both sides of the armature, in
the plane of its rotation; thus both
sides of the fat bObbins of arma-
ture conductor are exposed to the
direct inductive influence of the
magnets. This arrangement of
armature and magnets differs radi-
cally from that adopted in the
Gramme machine, the only other
dynamo-electrie machine of note
in which an annular armature is
employed.
When the armature is rotated at
1 -, - 1T