Daily globe. [volume] (St. Paul, Minn.) 1878-1884, 1878-07-01
EDISON oUT-DoING HIMSELF.
Il Trumpet With Which the Human, Votce
Hay be Heard T,cO Miles A,coy.

n Trumpet With Witch the Human. Tofce
Hay be Heard T,co Miles A,cay.
New York Sun. 7th inst.
"The telescopopohone'' is the name of
Mr.. Edison's latest invention. 1t is simply
a marvellous ear trumpet, upon the construc-
ton of which Mr.. Edison has been working
for several months. Mr.. Edison's attention
was attracted to the subject by his own deaf |
ness. He is able to hear only when tie |
speaker enunciates in loud tone. Mr.. Edi-
son is 10th to describe the telescopopohone
except generally, as it is not completed, and
is to be patented. The implement is about
five and half feet long, and has an internal
arrangement by which sound is concentrated
and made louder. sound which to the
unaided ear is inaudible. becomes distinct
by the use of the telescopopohone. Con-
corning it Mr.. Edison said:
"The telescopopohone is assuredly sue
cessful. have demonstrated that by its use
not only can those partly deaf hear,
but persons can talk while mile or two
apart
"But do not other sounds commingle--
sounds intervening between the speaker and
the hearer!'
Certainly they do to limited extent, and
more so if the instruments are not pointed
straight -
"How do you remedy that?''
'Why, you must point 'em straight. The
same objection could be made to telescope
If you do not point it straight you see other
effects than the one intended. BIT, when
the telescopopohone is pointed dlreuuly at
! the distant speaker with telescope exactness,
the voice of the speaker is the chief thing
heard"
"Does it increase the volume of sound?''
81 have whispered in one of these things
in a very low tone, and the sound in my eaI
was SO loud as to be absolutely painful"
q Mr.. Edison expressed the fullest conf
dence that he would perfect the telescopopo
hone SO that by its aid partly deaf person:
may hear every whisper on the stage of ths
largest theatre.
T. A gentleman who heard experiments will
: the telescopopohone, said that Mr.. Edison
o heard distinctly the ticking of telegraph
r instrument thousand feet away and ever
d the noise of the chewing and biting of gras
If by COW, nearly two thousand feet distant
6 One of the party then stood GOO fee
} away, and his whisper was distinctly heard
n although Mr.. Bachelor, standing only fifteel
d feet from him, without the aid of the teles
8. copopohone, could not hear word.
lie Then the party tried more striking ex
l. pertinent. Two of them went at least mil
l. off, and talked to each other in an ordinar
le tone of voice. Even at that distance ord
nary conversation was distinctly heard will
c. out speaking tube, without any wire
er electrical apparatus, but simply by the aid {
ly the new ear trumpet or telescopopohone.
as But, even this was surpassed by the ne!
in experiment, which was at a distance est
ir mated at two miles. From that point IL
is ordinary tone of voice could not be hear
n and shouting was necessary, yet the new e.
IS trumpet did its work, and the hearing WI
d, repeated as before.
by "Now, Mr.. Edison, what next?'
de sOh,'' said Mr.. Edison with one of tho
xt hearty bursts of laughter that he so often i
fe dulges in, 'sI've not got to the end yet