, 1879-03-05
THE RO.M0T0GRAPH.

Ettfson's Now Telophono observation-disclosures
Ing with tho Observation-Disclosures on
n Cylinder OF CIis1k Vibrating Nm Enlarged
DlnphrnEm1.
Nt1p rnFk Htratd.
The Cnnard steamer Algeria sailed for Livcr-
pool yesterday, haytns on board a!r. G. r. Edf-
sou. who has taken with him unu OF tho greatest
Inventions Ut tho uGe. On learning TINT tho
Professor had Succeeded In perfcsting a great
tmproyementia tho telephone receiver, Neraid
reporter went to Menlo Park to learn tic paturc
OF the instrument. Prof. Edison received
tile reporter very cordially ind ut onco set about
giving him all tho "details of Ills wonderful H.
ycntton. lie said he discovered tic principle Of
the clcctro.tnoto1raph sono five ur six years
Ago, but did not apply 1t to the telephone re-
ceivcr until quito reccht!y.
The description Of tho apparatus Is as follows:
4 d!npslsagn. ot in!ca four inches in diameter is
hell IN a suisable framework. \ ha,nl crank Ia
prcEnatcd With thc proper chemical sollltiou}
with continuous forward ,uution directly out
ward from the face of the diaphragm. Onr und
Of metal bar IL fustcncd to the centre Ut the
diaphragm mid the other end rests upon tue
chalk cylinder, being held down very firmly by
II spring. Tue circuit Is made fron1 this metal
bar, through the chalk cylinder to the base As
the cy,ndcr Is rotated either by ha,nl or other
the chalk cylinder 10 very considerable, and the
diaphragm Is drawn or bowcd outward toward
ts's cyln1cr: This operation Is purely ,l,echunl-
cal and lornl. When tho. electric waves are
Ee sneaker 0 rno % Uses s'a" Ed!saas sss0 ea4- ~
hon trausmttcr) over tho wire 10 liz
receiver, each wavc US It passes through tic
c'alk cylinder effects BY elcctro'chcmteal de-
composition more or less naturalization OF tllr
friction between the bar .n,ll the cylinder, a.
cortltnE. al the wave nny be strong or weak
one. 'ft,c rrsultant effect OF each wayu is thu
freolnE Of the d'apl'raen,, permitting 1t to re.
electric waves, With the alternate space between,
elects Il Vibration Ut tho diaphragm III perfect
accord with tho voice OF the sr cnkcr, The acttnu
being solely electrical nlHl chemical. The clc-
Hcnt Of sisnc Is not factor, as In the rlectro-
magnetic !nstrumttnt, where, US Is we'll known,
Il perceptiblo degrea Of time Is requisite for q
Charge ami discharge. In tills new tclunhone
apparatus Ellison lfsrenscs ant!relv with tho
elcctronlaguut, hcrctofore used III all telephone
principle. This, by its great dellcacy and
power, IA ulo.!e TO vbrntp very p,ucl, larrcr
diaphragm than ts possible With tbs electro.
magnet, thus giving greater volume Of sound.
's,nt onyiating tho necessity Tor holding tic scIs.
speaker is transmitted to tho uistaut Stallion
without tho loss Of volume. In fact, ut
times, With very considerable increase. tho
telephone speaks louder thur tic person talking
Ut ll,e transmitting station. 1t also PRODUCES
tho highest musical notes With tho sino per-
leetion na tho lower ones, something TINT was
IoltHu Impossible In fllt old 1iinehne. f1ltsu
points u superlorlty over tho ccctro.maCnck
arc Quo to tue fact lhat shtlo In the elvctro-
n,agnct the eloctrIc waTea constitute tic force
which ybFates tho diaphragm Of t!c receiver, tn
the now i'laeElne they only control 1t, the fosce
used being strictty local, either The power Of
hand or clockwork.
The Lwp Instruments taken to Europe by Mr,
e. T.. Ediann were tested ut the laboratory
Tuesday night, aud found 10 work In most al.
IYMtnll during hta lectures ol, Prof. EdIson's
Inventions. The reporter ~ns shown ali The u-
,crestnE features Ut the laboratory by ono O! tlo
assistants. Everywhere c0uttI be sce,, tllo i'm
plcmtnts used BY tho Professor In hls expert
nlonts on tic electric light. Mr. Robinson is Mt
present hard ut work manufacturing two largo
t'honogrnptm. onc to 10 presented to the En-
pcror III Brazil ,tnl The other to tho Emperor OF
Hrrlnnny. The one for the latter pcrtoungc Is
nearly complctp, and now md tien gayu eyi-
tcnre Of its exlstonco by ahrieklng out when-
cygr rev0Eypd tho words OF Adhtuet's sulIloauy:
nIQ lc, OF not In In. that Is ft1f purktto Inn u =