Wheeling register. [volume] (Wheeling, W. Va.) 1878-1935, 1880-10-02
LIGHT.
The Magician of MrnlO Park
Tells His Own Tale.

! II have U'rn KEPT I"lN''l ll INV
progress OF Mr. Eiis1u's electric light
bv interviews held with the inventor
from time u time. Although his Own
WORKS were used, they Camc from hIS
lips and no, from ms pen. the EDITOR
of the North .lutr-irrp krr,"w las ln!uC-
Ell Mr. T. iisOn t. tell ms " tale IN
his own mrl,diuus way, and the re-
suit is an interesting article, over his
signature, whlrh apprarSiu the October
number oi that p"IiDilcd.
Mr.. Ellison begins his article with a
frw words 10 those who have exprr~'cl
their impati-uCr at th" DELAYS IN tre
pprfsc,ing Of the electro hight. The
DELAYS which hav" occurred u defer It's
general Introduction are charsrabI", he"
saws. not Ia any detects since discovered
in the original theory oi the system IN
its practical Workings. hut 10 tine curr-
nous mass ui details which have Ia u"
mastered before th" system can - INTO
operation on 4 large scale and ca 4
commercial bI~lS ~ "a rival u Ia" exist
Irg system ct lighting gGS. Important
improvements have been brought about
bv these drlavs in the direction 1T econ
omv and simp,IiicttlOh "a almost every
point in the system, a. we'll ~ IN IN"
details Of manufacturing tae apntrat-
Us.
The lamp. the inventor tells IA, has
been completely transformed. Ioqnote
his words:
The perfected lamp consists OF an
oval bulb Of glass about five inches IN
I height, pointed at n eni, AMI with a
short stem thTce-quarler- oil an inr!l IN
diameter al the ether. Two wires OF
| platinum enter the bulb through tlis
stem, supporting the loop "r l.shap"d
thread uf carbon. which - ABOUT two
inches in height. The stem is E"rme.
tic,llv sealed after the introduction at
the carbon loop. At this pointed end
the bulb terminates IN an open tube
thro4gh which the air IN the tn u Is tx.
hsustpl bv means ui 4 mercury pump
ill not over u mllllonth part remains
The tube j. then closed. the outer eN'
tremities # the two platinum wires are
connected with the Wires al an electro
I circuit, and ut the base OF III" lamp - 4
screw bv which the circuit IL made or
broken M pleasure. When thccirrult
smalr the res stance offered 10 the a.
sage Of the e'e';rlc current by the c1r-
bon Causes the loop 10 acquire a ii2h
7 tpmpPTature aud II become mean les.
cent. but as tins takes p,t"e IN 4 va
crum, the carbon IL not consumed.
TN. life" Of i carbon loop ,urou:h
which a current is passed continuously
varies from seven hundred and fifty To
nine hundred hours. With an later.
- II. - L. M nAHa Il
. duration oi ljie, aud ~ the average tim"
au artificial light l. uscl Is five tours
per day il follows that u lamp Nil
/ last about six months. Each lamp costs
about 50 cents, and when II fails en-.
other may he easily substituted tor Il.
Another important mobilization Of
Z the system, introduced since the latest
authorized accounts ot the light was
published. il the substitution 81 GN-
namu-machines ior magnetic ma"ulu's
in the stations from which the e'cctr Ci-
I is To be supplied q the several III =
trirtS It the city,-a ciang" in the
( direction 81 simplicity AID economy.
To the question which Is 50 uitcu asked,
when vii a public demonstration OF
the working Of this system be made, the
inventor replies:
That such a demonstration Will in
all probability be made At MCn'o IarS
within two months from thiSdLtt. The
/ time which has elapsed since the pre-.
| liminary demonstration OF last January
has been by no means Il season oi lnac-
ton for the promoters OF this enterprise.
There is a vast gull between the most
successful laboratory experiment posi-
Die and the naturalization Of the results
| Of that experiment in a commercial
sense. A prodigions amount OF work
vas neCessi,ated by the establishment
OF factories for producing the lamps, the
generators. and the other essential parts
nj the system ia large quantities. 50 a.
TO bs able I supply the last demand. y.
Mr.. Edison goes into the particulars
concerning his lamp, giving a statement
Of its advantages over gas in tn" matter
of simplicity in the management AMI
economy. lie repeats what has already
been stated concerning the plans Tor
lighting the cities. Estimates are being
made OF the exac cost OF plant in the
different cities; contracts are being
negotiated for the manufacture on q
large scale OF engines, dynamCs, lamps,
wire, and all the other supplies needed
for the practical introduction OF the
system throughout the country.