The Red Cloud chief., 1880-03-11
EDISON's ELECTRIC LIGHT.


-Leslie'S Weekly.
---
EDISON'S ELECTRIC LIGHT.
lie Declares n to he Practically Perfected
His Plans esr the fu'urs-
iFrom the New Work sun. Jan. s.I
"When Sir Humphrey Davy, the IA
mous English chemist, was appraised of
the Pfoject of forcing carburetted hy-
drogen gas through a system Of pipes
for purposesof illumination, he laughed
in derision. = Nevertheless" continued
Mr.. Edison.'' illumination by coal gas
proved to be a great success. Ny prof.
ect for the subdivision Of the electric
light is treated in Alike manner by Nil
those persons who are profoundly igno-
rant of the system which | am day by
day perfecting. II is a singular fact
that persons conversant with the sub
jcct, after inspecting my laboratory, are
ready to allow that am all right As far
as | have gone. | ask no more"
Mr.. Edison insists that the only gues-
ton now is of the perfect formation Of
the glass globes Of his lamps. This, he
says, will soon be brought about. Not
withstanding the occasional unfavora-
BILE reports of Mr.. Edison's experiments,
as published, the company of capitalists
who are backing him seem not TO lose
confidence in the inventors ability to do
all that he has promised.
The proprietor of one of the private
dwellings in Menlo Park, that are illu-
minated by the Edison lights, said last
evening: "The lights seem almost per-
feet. They give Us absolutely no trouble.
When we retire We turn the little screws
attached - each AID ths allow Instantly
ceases. Often duang the day I turn the
lights up. So far, nsArlJ three weeks,
they have not failed. The sO-called
scientific persons in New York and 9TH
ers who are continually c~ondemning
this plan for lighting As impracticable
have a great surprise in store for them
They are sure to see their entire city
lighted by these same Jets"
A number of new lamps were set up
Yesterday in the Mcnlo Pafk Laboratory.
To the ordinary observer their intensity
does not differ from that of those that
have been burning for weeks. Exam
nations of the carbon contained in these
latter, made by the photometer and
galvanomeeer show their resistance to
be unimpaired. That is to say, the
amount of combustion that has taken
place a not be measured.
II is thought in Menlo Park that some
of the lights that We're stolen during
the first week of the public exhibition
have fallen into the hands of Western
electricians. Should similar lamps be
manufactured and used, even without
the improved dynamo machines, their
introducers will rs prosecuted by the
managers of Mr.. Edison's Electric
Light Company.
a means Of preventing the glass tubes
containing the imandescent lights from
cracking Mr.. Edison says he has dis
covered, and will at nee put in practice.
All the point where the platinum wires
pierce the tubes, a compound is applied
having a fixed alkali for the base, and
a c~onchoidal fracture.s Several of these,
he Y have been burning for eighty
hours without the sign of a crack.
The following are the number of hours
that each of the lights now set up ut
Menlo Park had been glowing up to last
evening. 1t was made by Mr.. Edison
himself from the book kept by one Of
his assistants: no
5e7. tG5. ls5. SIS. 5os. srs. 5o,. 81. 4s1. is7. So.
$50. 49,. sv. 4so, $50, 400. ss., 80. $40. 3.5, 81. 81.
81, 81, 80, AZ. 81. 3S, sSs, ~, sq, e4, so. 40.
go, 81, col. $50, sl5. ssL Is. ~, Ias, Ie, is4, IB.
This includes not only the lights in
the laboratory, bat also those glowing
publicly in the streets and in the private
! houses. ~
Mr.. Edison exhibited last evening q
series of elaborate drawings which COM
prise the entire plans for the station that
he says he will shortly establish in this
city. The machinery is to- be placed in
a building 25x1O0 feet. In the CELLARS
to be FIVE engines OF e5Uehorse power
each. The dynamo mAehlnesare to be
in the second and third stories. Using
the small horseshoes instead of those
now in use, with the same resistance
100 ohms-Mr. Edison says he finds
that he can obtain eleven and
Ope-half instead OF eight lights
to the horse power. In this manner
he believeshe ngeneraasl2vs15 80 lights,
each having q poxeref Is cspaies. He
saws. further, That in the day time, when
his lights are not used, he ean hire out
the powsr q bis engines at greataA-
vantage. By means Of copper insulated
wires he can frarsmit t6e power gem
Grated, and dxtEbuta. Il smobg the
manufactures within sf1dius0i half q
mile, although never moresns66o4hoSe
power 70 ,Any one building. An agent
whom be has employed to inquire among
the nsnufacfurars - the vicinity of his
proposes Session hAe Just, he avs, re-
pored even more favorably than he an
J 6cipated. Mr.. Edison went on to say
that, although he could only deliver al
3abe end sfhnlfs NJ g per cent. of his
1e507~ poeG, nlertheless, sthe
Z ProitN oold ba enoTAdS 1t stands to
reason, he argues, that you can run five
250-horse power engines cheaper than
ys1 anWn fortyeighs -SShorse power
u. BdHsoa sdded-s that he is now
plscing ! 6li&ht in a large steamship in
course of construction by John Roach
tsk Chssfer,P Pennsylvania. The ship be
] longs to the Oregon Steam Navigation
\ Conpasy. EGhtAx Of three candle
EoCss. fSe eStisiEGVA
ated by e OF q small dynam2~
ieains ssopsseteS - the donf
I gines. -
.s-Marashsn one Eonab enetomss -
never known how good he wxy uln1 1t
killed somebody and heard the II