Gold Hill daily news. [volume] (Gold Hill, N.T. [Nev.]) 1863-1882, 1880-10-09

bchl0s ptipkhb6 49, S~e
tribe, in order that all may enjoy IL
But his greatest improvement has been
in the motor or generator OF the requisite
electricity. substituting dynamo for mag
peto machines for the stations from
which the electricity is to be supplied to
the several districts Of q city change
in tho direction OF increased efficiency,
simplicity and economy. he now claims
to have fully solved the problem. chem
ically, mechanically and pecuniarily,
and that Its general introduction into
the household in cities or populous
localities, as we'll as into extensive estab-
lishmsnts where numerous lights are
required. is q certainty within the near
future. independent Of all contingencies
all OF which will be demonstrated about
the end Of the present year. In an able
descriptive article contributed to the
North American Rsvie,o for October,
Edison says:
The perfected lamp consists Of an oval
bulb Of glass about i've inches In height'
pointed at one end. and with q short stem
three-quarters Of an inch In diameter at
the other. Two wires Of platinum enter
the bulb through this stem, supporting the
loop or n-shaped thread Of carbon. which
Is about two inches in height. The stem
is hermetically sealed after the introduc.
ton Of the carbon loop. Al Its pointed end
the bulb terminates In an open tube
through which the air In the bulb 10 ex-
hausted by means Of . mercury pump till
not over one-millionth part remains; the
tube 10 then closed. The outer eItremi-
ties Of the two platinum wires arc con-
nected with the wires Of an electric circuit,
and at the base Of the lamp 10 . screw by
which the circuit 10 made or broken at
pleasure. When the circuit Is made, the
resistance offered 10 thepassage OF the cleo
trio current by the carbon causes the loop
to acquire Q high temperature and to be-
come incandescent; but, a. this takes place
in Q vacuum. the carbon 10 not consumed.
The 'life'' OF . carbon loop through which
q current Is passed continuously varies
from seven hundred and dfty to nine hun
dred hours. With an intermitted current,
the loop has an equal duration OF life; and,
As the average time an artificial light Is
used Is Eve hours per day. 1t follows that
one lamp will last about six months. Each
lamp costs about fifty cents, and when one
fails another may easily DO substituted
for II.
The light 10 designed to serve precisely
the same purposes in domestic use a. gas.
lights. II requires nj shade. no screen Of
ground glass, to modify its intensity. but
can be gazed at without dazzling the eyes.
The amount OF light 10 equal to that given
BY the gas.jets in common use; but the
light 10 steadier. and consequently less
trying to the eyes. 1t Is also a purer light
than gas. being white. while gaslight 10
yellow. Further. the electric lamp does
not vitiate the surrounding atmosphere by
consuming Its oxygen. a. g~aslights do. and
discharging into IL the products OF com.
bustion. The heat emitted by the lamp 10
found to be only one.hfteenth Of that
emitted by Q gaslight OF equal illuminat-
ing power; the glass bulb remains cool
enough TO be handled. or course, there
are here no poisonous or intiammable
gases to escape, and the danger OF fire Is
reduced to MI. with . consequent reduction
Of the rate Of insurance. Again. this light,
unlike gas, 10 always Of uniform quality.
A sort Of meter registers exactly the
amount OF electricity consumed In each
house. Finally. not to enumerate all the
advantages which this system possesses
over gas-lighting. the lamp can be mani.
pulated even by the most inexperienced
domestic servant; nor can the most care
less person do injury to himself, to others,
or TO property. through not understanding
Its mechanism.
With every facility at command, the
experimental introduction. the first
practical trial Of this new light, 10 to be
made on Q large and costly scale. A
hundred horsepower dynamo-machine
has been placed in position to furnish
the electric force for eight hundred Of
these lamps. for which over nine miles
Of main wires have already been laid
underground or strung on posts. and no
difficulty 10 found in obtaining the
Of people who are willing to take
the new lights on trial. It is proposed
to sell cheap electric power as well as
light, 30 that printing presses, sewing
machines, etc.. can be run, the same
power furnishing the light to work by.
a. well as the force required to run the
machinery. The company organized to
carry out Edison's ideas even anticipate
sufficient revenue from motive power
alone to be able to furnish the light free
OF cost.
1t In not at all difficult here on the
Comstock to appreciate the value and
utility Of such lights in the mining
depths. The thousands Of candles now
used. not only consume the oxygen. but
contribute in no small degree to the
great heat and vitiation Of the air. while
on tho contrary these simple electric
lamps could be used wherever candles
are. and give q pure. clear light. almost
like that OF day. No ERE in the mines
could possibly originate from these
lamps. and no explosions from the igpi-
ton Of infammatory gases. In coal
mines especially this point will be most
earnestly appreciated. plenty OF light
being given. with no danger whatever.
Edison's complete success In this matter
will be s~nIiously watched and hoped for
BY interested thousands in all parts OF