, 1874-07-12
employed. cat would do AZ we'll. though. I
substituting therefor an electromagnetic.

! PURPOSE. In 0LueT NOTus. lQ6 OaSQeB CCul1 En[
! be denoted by corresponding pitch OF sound r.
ceivcd, aud tile time required to denote dae
would thus be no longer than that require
for dot; or dots and bushes may bot
be denoted in this manner. A ski1lfl
operator caoable Of quickly distinguishing on
pitch from another, could thus readily interpr@
> message. Tie receiving operator may, b
bringing his ear in contact with the 6onndin
| piece, have both hands free to send a message
The recording may be accomplished br means q
= Sholcs d. Glddens typewriter, wish which e1
pert operators can record about eighty words
! minute. OF course. new alphabet couHistln
| entirely Of do:s would have TO bo employe
| where each letter Was represented by note O
different pitch These dots would be identica
as 1egA1ds duration with the Morse dot. Ih
saving OF time by this change would DO equal t.
i four to one.
ELEcTh1cAL FORCE REQUIRED.
Reporter-Does tllo transmitting OF sonnd re
quire greater or less electrical force than or
diuary te1egrapliug7
| ,1r. Gray-lluch Iees. For ordinary sound
| dredtL part Of tue battery power now required
! would be sufficient In this respect it nay be
| employed with great advantage in connection
with marine cables and wires l believe tLa'
with two, or as most three, cups, 2.000 miles Of
aerial lines could be worked On tho sound sys.
TEN, where not less than :, 200 cups are at pres
ont employed
TWENTY MESSAGES At ONE TIME.
Reporter-Are the Increased rate OF speed. and
the dlmlnuslon III necessary battcry-power tAa
only practical advantages your system has over
the old one?
Mr. Gray-No. The great advantage lies in
the fact that I belieye in wor1;in1; bs sound
transmission. AS many Is twenty OF moro mes
Aa5es can be seut over single wlro at the san>
time without any confusion a: tho receiving Of
fee. Without going into ths science If acous-
tics to any great depth. I will mention that one
Of its principles is going to uelp us produce tho
resuli / anticipate. Take 4 tuning fork, vi
brato it, and piss it aioug the ,noutha Of tho
pipes OF al orgau, AMI YOU fad that, wbilo in
tLose OF diffel key from TIC fork 10 effect is
produced, the nonetit tile fork is placed opposite
the pipe OF the salue key the latter will give out
sound. believe tnat this principle is applcable
in sound-telegraphy. An operator telegraph
ing at tie transmitting end OF the
wire Bonds all his messages in one sustained
note maintained by the vibration of reed tuned
to give forth certain musical note which is in
unison with an orgau-plpe ut the receiving end.
Several operators, each working the ord,nsry
Slorse aluhabe. in different note, can, be-
llaye, seud and receive messages over the same
wire without confusion.
Reporter-IAen the increase in spced will be
in ratio to the number Of operators It work Oh
each wire +?
Dir. Gray-More than that even. In sub
marine cables al operator at WORK on one note
will be able to transmit 'hree times fast ~ HI
operator docs at present.
Reporter-1n how many notes do you think
can be transmitted along single
wire:
Mr. Gray-Ae far as can be seen, 1 know no
reason why there should be any limit outside Of
the limit Of musical sound OF distinct pitches.
EePorter-Nhat suceess have you already OBJ
tanned IN the joint transmission and distinct re-
:eption Of musical sounds?
Mr.. Grsy-ln experimenting with resistance
:oil have successfully transmitted simultsne-
'utly and received separately four distinct
musical sounds.
Reporter do you consider to be the
INIT OF musical pitches capable Of being am-
,loyed.
Alr. Gray-1n seven octavcs there are about
.ignty-1iye distinct musical notes. 10 avoid tho
confusion which might arise from tbs employ !
nent OF TWO notes OF nearly the same pitch, I !
would use only notes removed from one another |
y four or i've Intervening notes.
Reporter-fhar would leaya about twenty |
aotes available, and, With the capacity OF tele- |
present method the capacity Of singla WIG /
VIII be increased about sixty-six times?
Mr.. Gray-That is the minimum practical re-
1lt which trust will be obtained.
TELEG1APH1Sa TUNES. /
Repofter-Io drop tue practical view Of the
natter, do yon really think that 1t will lie in
our power to telegraph tune from Chicago to
remote American city?
Mr.. Gray-Ies, and to IS many of them a.
re- supplied with teIegraphic connections and
roper rcce.ver.
Reporter-What regulates the quality Of tho
ausic /?
MIR. Gray-The quality OF the tone at the re-
Giving end IL determined by the nature of the
eceiying apparatus, tue time and tune By tho
'uslcian who plays the electrical instrument at
ae transmitting end OF the wire. II piece Of
aper be tho receiver, the tone is pretty much
he that produced BY the coInb-or9An which We
sed to grind tunes out of in our early davs
@ violin, the tone is full and resonant, and
lst az II tho violin were played on with bow
liz oven though t.lo instrument PLAYED by the
lusician was piano. An oyeter-cau is by no |
Ieans poor receiver.
Reporter-Then, suppose, il an empty beer
arrel we're used as receiver, it would convert
le music into Peoples party stump oration
mr. Gray (ve1y gravely)-Ihat IL 8 matter
.nnot determine.
Reporter-Hare you made any tranBmissions
sound over long length OF limo instead OF
nplovlng resistance coils ?
Mr. Gfay-1n New York City, recently, T had |
10 use for ono experiment Of the aerial line
ostou, and for another Of the lines from New
ors to Washington end return.
did the experiments succeed |
alf. Gray-Perfectly. 4 tune was PLAYED
bich went the round Of both trips. The instru-
ent on which the tune WAS played gave out |
nes which could only be heard an inch or two
ON the instrument, while the volume which
q vlolln-receiver emitted filed the room.
TIE TELEPHONE.
do you call the instrument
ljch provides the music |
alr. GIay-l call 1t telephone. The one with I
aich made experiments III New York III still
ere. but am having another one made here
two octaves, With which / will illustrate the
'rking Of my invention II you will step this
y. ,
The inventor stepped into the Workshop of tho
ofnpauy. and showed the reporter Ills new tel i
hone, Into wlicn as yet only four reeds had +
Ell inserted. Having made IN electric con- t
ction with it, he TOOK The end Of the wire into ,
room at the end OF tho workshop, shut tile /
or, and waited for The sound OF tho notes to :
no from the instrument which he had iu- |
ructed 3 gentleman to play, The wire |
and resistance coil between the telc- :
one and the souldor, which was simply :
1au tin box with openings on the upper sur q
ce, WAS equal to about 500 miles Of aerial line.
t the notes from the receiver sounded clearly ,
d CORRECTLY. In every respect the experiment =
IS successful. .
1t Ii now about four months since 0Ir GRAY .
st conceived the idea Of telograph1ne mrs:cal 7
unds. That lie has na,le good uso Of his time i
y ono who tho experiment would r
willing to admit. The idea is inlorsed bv +
n 1Ir xt&- ~