The sun. [volume] (New York [N.Y.]) 1833-1916, 1877-07-10
Mr.. r. 4. EDIsov's TELEPHONE


The transmitting apparatus consists sim
ply ~ n long Tube about two Inches in diameter.
dlaphrn-m winch 1s Kept tight ly a strrt hing
ring. In the centre u the brass diaphragm ~
rivi"i "a ihn disS Of rlnlini. and immeIiairly
IN irvnt oi ih's disk is an aDu-lAbe platiha-
pointed row ;" urcd ip a rigid pillar.
To transmit ihe music il u.s. only necessary 10
sin, or Vlny into the open end ol THIS tune. rms
onusns th' Diaphragm 10 vinrat'. and. tine pla-
tina poiuis. meeting. ilnkc the citeuit. ANA the
rir- ,urrrut transmits every vibration over
thr wire g. th" receiving end.
Thrre'clying apparatus cmpoyoih Ivy Mr.. Eli
son Observation-Disclosures ton,. is based upnn nm
original dis .uycry made hy him some i've years
u..l. This dis uyory was that when pirrr Of
paper mui-t"nHd with certain chemical sou-
tie nos tive ! nle of battery and u latna-
faced WIRE connected 90 th" nrsativ, pole of The
battery is drawn over the paper. the passage ut
t' current through II causes all m tlon 10 dis
appear. AMI the plaina-ia .rd wire slides Over
the Ilprr as iron upon irc Init If the current hn
INTERRUPTED. this cnet instantly disappears.
and the normal friction 81 the pap u rlus = tho
wIr's t. he drawn over 1t with difficulty. This
pr.h 'iple Is aprlrit To tho r"cciV.r-H Resonant
h,N. a drum or wheel having nun-os on both
hy the hnndic 4 continuous strip Of pnpcr
from the reel passes over the drum. the sur. .co
Of which il roughen, Il. j sting upon the
drum is smooth plutina point upon ;hr end OF
Resonant hoN and presses the plating point with
considerable force upOnt the rhrn ally prepared
paper. ia. curi NJ from the battery r1ssr7 -
the mo II papcr-whirh in t. state IL con luz
tor--tneu 90 tuthe drum nj back TO the li,t ny.
The operation il as follows; When the handle
t. turn IT, th" paper passes forward. aud the
normal friction h.twrcn the point and the paper
rycs to -iye a forward motion t. the spring
10 me- one side ar the + '-pnnut box il drawn
out. II. now u wave II current passes through
the paper. an friction eases. AMI the spring
lt being pulled, the side If tn. rcsouator ro-
gums 10, normal position; and this ink's pa 'e
at each lbration. BY means of this friction tho
most feeble currents. VIII III would not produce
tho slightest 'lrct upon an electro magnet.
thus exert extraordinary strength. ms uppa-
raius Will respond and reproduce with great
power the highest notes OF the human voice.
which are nearly innudibls WHOM magnets are
employed. the s.owncss Of their operation be-
ing due To- I'll" time required for the mngnctila-
ton and demagnctization Of the iron cores and
the urpiu ton Of secondary currents. which
7 delsy The action and mutilate the signals.
This t"sll.p tinn refers moro cSpe tally to tho
apparatus for the transmit n. T. the human
between TINS aul the speaking telegraph
/ proper. however. is in the suhstitutiop Of n
/ p'umhago point for the plotnn pointin tho adj
/ ju~tahl. row Ut the transmitter. This again
/ il auoihD r original discovery Of Mr.. Ellison :.
/ VIZ. that plumhl-u changes its electrical re-
/ si~'en." VIII enormous rnpidny under pr -
/ sure. the clln I iu this aplhcatun hrins that
| VIXEN the dia'hrasm is Ntrated weakly contact
/ i mad" with ti' rlumlago point very lightly
/ nnd err- stance of the pumbaso being but
/ slightly reduced. weak current l. sent ont
! from the battery. and a weak rifni produced al
/ the r. ewing sutton. When. however. - strong
/ pressure OF III" diaphragm is en. ted, 10y reason
the voice. the stance Is very greatly reduced
I and strong current pnsS's tp the limo and q
strong or loud "iHr : produced NJ the rer'y'
/ lh,f station. Hence the amount or power. wit
an us IN" gradHtlon~ gnn' rated 10y the voice ~
/ the transmitting station. is transmitted in ~
pr0pVrton- 10 the receiving Instrument, ano
/ thus tho fine articulation Of the voice j. Obj
! tinrl. Tbs OF itself Is n WONDERFUL invcnti"n
/ and Will to- Of great value TO ole Htrlcian- II
other II rids. Tn ability To- s"nd from mitr'
/ currents az different -tr 'ngiA automatically s
/ now and valuable Invention ia electricity.