Mineral Point tribune. (Mineral Point, Wis.) 1869-1938, 1888-05-24
EDIS0N'S NEW MACHINE
The Wizard of LIewellyn Park Com
pletes His PhOnOgraph-A
Marvellous Exhibition.
Speech and Music Engraved by Sound,
Preserved and Articulated
Again.
New ort Herald.

ne W IA1EO Oh lleWtllyu ark sdtu W
Herald reporter yesterday that the
photograph had given him more trouble
than any other OF his numerous iLven-
tions. Since 1t was first exhibited in this
and in London, eleven years ago, it has
been revolutiOnized, and the machine of
today is entirely unlike the tin foil re.
cording photograph of 1887, except SO
far as the principle on which it records
sounds Is concerned.
Herald reporter made special visit
to Mr.. Edison's laboratory at Llewellyn
Park yesterday afternoon. On entering
'he experimental room he heard a cornet
playing without horns or musicians in
sight. 1t was Edison's wonderful phOpo-
graph throwing out music like brass
bend. Half an hour previously horns
had been played near the instrument
Not a note was lost. The music would
come out just as good fifty years hence
as now" said the wizard to the astonished
visitors who we're gathered around the
strange machine. Then some musicians
were called in, and they played waltzes
sonatGs and military marches A big
funnel, six feet long, coaxed in the music
and focused it against the tiny drum of
the phonogtaph, which, ia turn, vibarted
under each sound wave and punched a
little needle against wax cylinder re-
yolying by electric battery power at the
rate of one 100 revolutions minute.
EVERY SOUND FAITHFULLY RECORDED.
All the music was faithfully recorded,
and in few minutes the phonograph was
repeating those wild and stormy notes as
we'll as the softer cooling passages to
delighted human ears In the centre of
the room stood a concert grand piano.
1T was made by the manufacturers for
little Joses HOfmanl,o said Mr.. Edison.
BY request this instrument was also play
ed and its music reproduced again and
again nearly "a it was come from the
fingers of the man on the piano stool.
Mr.. Edison said that having perfected
the monograph for the human voice he
was now trying to make ii capable of
reproducing music exactly as 1t Is written
and played. He had found great diff
Guilty in determining the proper speed
fog the machine, and the proper length
and focus of tho receiving cone which,
like an ear trumpet, conducts sound to
IFS little erd attached to the monographs
drum.
Experiments showed that music played
in a low octave was transformed into
piccolo by the phonograph when rGn at
high speed, while the high notes become
rich bass with slower speed of the phonO.
graph roller. If the speed of the roller
and the size, length and pitch OF the re-
ceiving cone be just right the music will
be transmitted and reproduced exactly as
played. A good illustration was given
when one of the experts said that a mans
image was exactly reproduced without
distortion in two mirrors 1t they were
placed at the proper angles. The slight
est deviation from correct position would
make mans reflection appear TOO tall
too short or cut of proportion, as ia con
cave or convex mirrors. The laws gov
erriug sound, waves aud light were some.
what similar. The Wizard said he ex-
pected to have his musical Photographs
ready for use in a few weeks.
THE TALKING MACHINE TESTED.
The speaking phonograph was tested
in various ways. 1t was a success. The
wax cylinders, GU which the sound i'm
pressious are registered, are hollow, four
inches long and about two inches in ei-
ameter-the shell being from a sixteenth
to an eight OF an inch thick. They close
ly resemble four inches Of large church
wax candle, bored out an turned smooth,
The photograph, with It's wax cylinder
revolving, looks like boy turning lathe,
the cutucg chisel being the pin fastened
to the little drum of the receiving tlbe
end which records on the wax roller the
sound waves. They ere mere dots, so fine
that one can scarcely distiuguisa them
without glass.
One thousand words are taken on one Of
these cylinders and no oy can distinguish
them. The screw that propel5 il has 100
threads to the inch, and the ordinary
speed is seventy revolutions a minute. A
ten minutes talk or dctation fills the roll.
A typewriter can copy it thousand times
and then put 1t away in box to repeat IN
the tones of the original human voice that
6rst uttered the sentences. Mr.. Edison
said he would soon be turning out the
talking machines at the rate of 200 a day.
To test the practcability Of the ma
chine extracts were read to 1t by the re-
porter and q dictation given it. Every
word was taken and then copied of on a
typewriter by Mr.. Edison's secretary. He
said that all their correspondence was
dictated to the wax rolls and copied and
preserved. They we're cheap. Each
would contain 10000 words before worn
out. A little knife pares off the surface
of the roll when filled if the last dictatior
is not to be preserved, otherwise a new
roll must be used
Mr.. Edison said the machine would DC
away with much Of the labor of stepogra
ply for dictations and private CORES
pondeuce. For taking public speeches
the big music funnel must be USED a.
when recording music from an orchestra
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