The sun. [volume] (New York [N.Y.]) 1833-1916, 1879-04-12
rDISOy'S ELECTRIC LIGHT.
r,r cREtT INVENTOR FRANKLY DE
CtIRES IT ENTIRELY SUCCESSFUL.

m. secret to be Lnid Bare within the
c,r,,,e SIX Wrcks-The Lights TO Burn
Nth, aud Day until All ARE satished.
xcomas Z. Edison sat in his new Office at
renlo Park. y j.. yesterday afternoon looking
oyersp notifications for patents. A letter written
bya New York correspondent Of the London
7,mss wos laid before him. 1t says that Edi-
sons electric light IS II failure.
Ihoyo seen the letter before" said the great |
Inventor d" 1t is a mass OF misstatcments. and |
e evidently made up in tho interests of gas
men. The writer is totally at sea"
Mr. Ellison then pasted the printed letter upon
, large sheet Of wrapping paper. and after
nnalyzing and numbering the authors nsser-
,ous wrote answers to them thus;
it,now known that Mr. Edison has failed in his ex.
perment with the electric light
"nis not known" Mr.. Edison wrote; quite
the contrary
2 The most tha; he has ever yet accomplished has
been TO 40 coed iron wires Ia state partial
rcandesccucc with a sixtecn horse power steam engine
The object ct experiment was to ascertain the num-
leraeols which could be brought to rcd heat any
ti,en clrcmt ltisupon this experiment that Mr. Edi-
son based his claim that could maintain 1000 lights
burning from one electrical station with tOo horse
power engine.
Never made such a statement" wrote Mr..
Edison.
The conclusion wasa fallacious one Mr. Edison
nov knows Platinum must be heated to 25oo degrees
before u,,sius intensity incandcscence which is
required ior illumination.
Correct" Mr.. Edison wrote > wo heat 1t
every day to 1000"
when the metal is as hot as that 1t is just the
verge Of melting
No So" wrote the Chevulier. " See above"
5 To prevent the lamp from melting this inventor has
used regulator. consisting Of bar Of metal through
which the flowed. which. when the current be.
strong expanded and switched on part Of the
Current, and thus saved the lamp
One Of 200 methods" the Chevalier wrote.
In practice the regulator has failed perform the
service required ot II
That particular one was not perfectly re-
LIABLE" wrote the inventor.
I when tie current becomes too strong the platinum
burner melts In the tvnkns eye and the mischief
h done before the regulator act
With the regulator / use" the inventor
wrote. il would be contrary TO the law Of ma
ture 10 melt H."
The inventor believed that he could overcome this
praeuea dhietv. but he has not succeeded Hs lamps
then from doing 80.
How does he know this y" was Mr.. Edsons
written comment
Nsno Park ''''' '''"' 1''''''
oh. yes, broke in Private Secretary Grimm.
sarcastically. We're all telling awful bad"
On the contrary wrote Mr. Edison. people
are buying property"
10 There has been another difficulty Fourteen out Of
ins,oa Patent once have been ' rejected '
This information" Mr. Edison wrote.
could not have been obtained from the Patent
Ofiee; besides. nine have been allowed. and
eight have not been examined. None have been
rejected"
u This mpulave man took up IN, electric hight las,
fall as an entirely subject Of expe rment .nd allowed
himseli 10 believe that he Wsy MAXI the hsht
reached e Patent once be GeS1Ssd Sa, very nearly
every dea which he had embodied IN his applications
had either been covered by the patents Of
WAS not uatentabe At all
See above" commented the discoverer.
fslk q one explanation '' "' At memo
Must be bad leak in the ofice." Mr.. Edison
wrote.
IS There is no doubt that the Edison light would be
dehshtu resource Tor the illumination OF dwellings Il 4
golden sunight-uurc brilliant and mellow hut the in
yenor vet bee able to regulate his current ;.
has never vsniurcd single public exhibition oiit
Have had semi-puble. exhibition for two
weeks" wrote Mr.. Edison. Have had l6 lamps
burning every evening in the factory and eX'
hibited II 10 over two hundred persons"
it The public have never seen so much As one Of hil
ii, laboratory at Msnio Psrk, have behSd iia single
mp enclosed y sioes esSI ~ ~, a, We 1 SI
it ci0,ciy ard has never allowed the exhibition Of Il
privately To last long He has never been able 10 depend
upon It's Durability.
Just disconnected lamp this morning.
wrote the inventor. that has burned nineteen
consecutive hours and did not show the slight
Is Ii;ipgara,usi, far from perfection =. it svel
line oi experiment
No electrician in New York has been in my
laboratory. Mr.. Edison wrote.
l6 vt tie early friends and associates of EdisoT
va Young man named h Fuller. Connecticut Yam
hoel Fuller made esai deal Of teicrfaih maeinef,
Of iuuians wa"i puip in PAPER matine &c Ten or ~
teen wears ago Fuller separated nom Edison. because
to the suggestions Of the other and the two mel
parted never 10 see each other asmn
never knew the man" wrote Mr.. Edison
until 1878. was introduced and spoke TO him
ioE lew minutes; | saw him for half an hour
There" said the Chevalier Edison. showing
pack his chair and Shaping the palm OF his
hand upon the brown wrapping paper contain
ing his comments. There is what you want.
iuW,, r"rly to all the statements in thm letter"
pe st Esoa ST Pis yerlrc a snS gn' " va s3 sRs
have all the houses in Menlo Park In up in sil
Trrks. The subdivision Of the light is perfect
have had more trouble with the dynampmctcl
ior the measurement OF the horse power fol
each generator than had with the light itself,
~" uelay III bringing the ilght before the pup
electricity. Mr. Edison was satisfied that h'
coull make a machine that would prOduc,
double the amount Of "a Wallace or Gramm'
Harulne 10 the horse power. He hai
made TWO machln ines aud mas met will
great success. He not only gets more
eltfreity 20 the horse pQwor. but the current II
more applicable 20 his lArp. one OF the gen
orators Wis tried On Thursday night. and wal
hF.ken. Mr.. Edison says that IL Jerked th'
tlhg right on the shaft Bnteuel r, his as
b;7ihnt WIS az work ~ IL yesterday. and both ma
SAlurs illdgaln DE in operation in day or two
o. IHl, me inventor says, me has spont abpu
s3OIO 10 experiments. He positively assert
udN tle lleht is an assured success, aud that /
can Doe made three times cheaper than gas
inenn. he says. " that ! can get the SAM
amount Of light for three times less money
acI4M cost ~ both parties"
3" attempt % prevent his obtaining n paten
lh ElS AMI failed. lie rs now gnttlnga new 81
% tWents ~ AL foreign countries. He think
sAW Inside oi two months If nothing inter
Itrrs. he VIII be- able To- make the whole thin
pupic, Hr can now got light cquAl 10 thlrt
Gaullc- from IHmp hat you'd at first give
AEIr ~ only tWo and half candies,
We are sale on our lamps. he says. IN
one We propose % us3 VIII not melt until II give
9nl uEut rq lai o. lree gits Jets We shall no
ioI'e more than one guS jet from each laul
a7tI IT'S lHrtIrr capacity ~ "a margin IN cnse
any als1rron."mcnt The latest improvrmeut
A''f rendered the regulator OF secondary I'M
g'iNIc', lur 10 would require rNtrA engines hn
D"ifrs ~ the "lr'trc stations to produce fore
9 "r'iririy strong enough 90 mott the lhmp'
~" Nhiy use .e for tho regulator Is - turn III