, 1879-04-29
EDISON'S LIGHT.
1yllat tho Mcnlo Park Inventor Iyns Secured
to Himself III tho Two rntonts 1asupd-
1llH EntltAli InYulitinnA

NnnE IT'D HGnl6 IArk inventor 1ghH secured
to Himself In tho Two rntonts 1asuatl--
Tho 13nslls, Invuntinna.
M Teitarttuh I" Se'o York Herald.
WASHINGTON, D. c., April 95.-Edtson's cx-
pcrlncnts In the creation all control of electric
light took legal form, al,L effect duy before yes
tcrdny, when ILLS patent pnpers for two kinds of
electrical lamps, both broadly being the same III
principle an1 operation, were issued from the
United Statcs PatcHt Office. The irst A,,tl most
Important III the two Applications wns filed Oct.
Is, 1878. As Is ust,ul with Inventors, Ediaou
ctalMed broadly III this !rat application tic
wllolo principle Of governing the nuuunt Of cur
rent circulating II, electric lamps for the
purpose Of modifying light. This covered all
clnsscs Of electric lnmps, und gaye Edison d
cluiu for originality Of invention, not only to
tlietin0stAtfe regulator MS q lncnns Of governing
tho circuit In continuously incandcsccne cun-
d,lctor 1nTp, but also for governing the amount
Of current pnaslnt IN carbo.i-arc limp, vari-
city OF humps which he hai1 held to bu practically
useless.
The claim for a tflcrmostatic regulator for tho
latter class OF lamps Was rejected Oct. 81, REFER
cnce being cited to Almauts English patent Of
Sept. q, 1913. The subject matter Of tho patent
cited NJ reference ngalnst Edson's broad claiul
was n thrrnostatfc regulator for governing the
movement of carbon poiuts, mil not for rcGu-
latng the Amount Ut current flowing over nn
iucanucscqnt l!gllt-gtvinE. body.
Tho regulator shown In tl.t English pntcnt
cosse " !.. on @ ", " s"u ,'at. ~
expansion aill contraction than tho other,
Wneseny sn's r., comnou, % ~, ',sGla. oar, Wmea IL y
nfteelen ~ lnh nsat o. tla ia','p' sauses ouo ol
e saspo po,nan 10 WIFE,. @ isa s "aee fsa ~ @ ~
other carbon pulAt. Hy this incaus thu points
nse hold at vnrIous distances from cach otaIer md
tiicISoS Eieneet npseo oct"cou ttes!s "a nusucut
wnlrl. spnco AIloras means 49, Of rcsa!atinE tl'o
tie nspon ponss aanr.s orenS i u slle eieess1c
cirra!e, ana consequently H. IL tals 9roak Uo IN
Greaseu Or Or dlls,lnasl!eu ta alaaonnt o. enfroit
lloMtE WI oa mYorSe'S Rsopot.aoHat , 70 .no re-
6lstareo III ti'u eiseult. tncsetoIe tHo tlellnos'
tatc feSahtor. ~ 1nb!!ett tG saroo'-NIc aaf1ps
was 1ttiay covered W t.ls Ensaeh paaehts bue
W. llisilEe ~ 1Gltare ailo meat's 70 the one em
Wnyea " Lutson'
anfersu aGtsoli ; taken ny ths fatenI O!t'co unon
either q tllesG cnscs, appcAFs. howoser' u"t 10
llhVe aleeteI NY lhicrGsts, appointments or OK
quotations ~ Tue blghle4s degree, ~ 10
Is n?nn thy u1rory tut tlIcre was
no utility III THO carbon.arc lano.
aud hc, thorcforc, mady no elIor. to reta'n ttis
ciain', put lGod'!!el US spcrillcasion So % to
Yie!tl tho pont III rclatloi! tu y tller!nostAetc
regulator Tor rirbotl'ns: !nnps. Tue Gurooil.arc
'otiu Is Tho oltlest l'Id Host !lIln'ernus Gass ot
electric lamps known. Light rsalEts " thls
class ot Jumps by thu passnyu o: III electrical
c,trront from ono carbon paint to nuotler, tic
points being short d'stancu npart.
| Thu lncarlescHlt kind Of lamps which Edison
shows, ainl with which he 1cnts exclusively,
CONSISTS mcrcly ot sIlall WGtalllc body, cittlor
III wre or thin ahects, Which Utfer htrh resist-
aru u the passage of tlIo current of electricity.
ThcY aro p!aec1 directly IN sattl current antl
mAAu sMrt nf tho circuit. lfy }nssi1t thu cur
rent through the Ia.nplt produces icatntcscanca
IN tho sirius or w!re, tllrtuby furnishing light
| giving source.
TlIGsu hnvu becn . great tnany exDcrlinents