Atlanta Georgian. [volume] (Atlanta, Ga.) 1912-1939, 1913-10-12
r perhaps pinned on your coat.

"A simple lever dial device moved
backward and forward will enable you
| at will to lessen or widen the range CT
sound that you may desire.
Relief for Teiegrapher.
For instance, in a large and noisy
| newspaper office the telegrapher with
/ a silencer beside him can eliminate
an the sounds of the room save. the
noise of his key.
IN cutting out all other sounds he
necessarily diminishes the noise of the
| key to his ears, but because the tele-
| graph key is usually the loudest note
| in the room he would still hear it
after he has shut out all other sounds
The same principle would apply to
| two reporters using typewriting ma
| chimes side by side. With silencers
| each operator could cut out all sounds
around him, whether talk or mechan-
/ ical noises, merely by operating the
range lever of his device
| Garry the idea as far as you like.
| You can permit all noises in a room
and the nearer noises outside the
| building, or you can cut out sound
so that, sitting in the midst of a
/ babel, you are protected by a screen
| Of absolute silence.
! The silencer is as practical as a
| lamp and is subject to the same laws
of high frequency air vibration as the
| fame of a light to the laws of high
| frequency ether vibration. In fact,
plan TO have 1t used in a dual device
with lamp. one part for light and
one for silence.
| Il suppose that all this seems
strange and wonderful. It's queer how
! these simple ideas that mean so much
have evaded us for so long.
Has Maxim Sounder, Too.
| Now, let me tell of another de-
vice which is a kind of product of the
Esilencer and which will, I believe,
prove a tremendous boon to a certain
class of deaf persons.
81 call It the Maxim sounder. 1t will
enable all persons who can now dis
| tinguish sound when listening at a
| telephone receiver or when riding on
trains or in street cars but who, other
wise, can not hear-to enjoy the priv
| ileges of a person who can hear per-
fectly we'll without the use of fan
for the teeth or any other phonetic de-
vice such as Is now considered so en-
: barrassing to both the deaf and those
who attempt conversation with them.
The vibrations produced by the shak-
| ing of the street car or the railway
train or in the telephone receiver are
very intense.
| THE fact that these otherwise deaf
persons hear In street car or at the
| telephone is because their auditory
mechanism has been set In motion by
these intense vibrations, and once be-
hing set in motion. they are enabled to
| carry through ordinary sound viora-
| tions.
THE auditory mechanism of a deaf
rerson of this class is like a tight
| bearing with lot of friction. once
start 1t and it viii run with but little
power; the difficulty is to get 1t start
ed. Now If we can furnish a device
! that will shake these partly defective
or slow starting ear mechanisms, In
Guiding the bones of the skull around
| the ear, into action, II is not difficult
to keep them running. 1t is not nee
essary to produce violent shock or
a loud sound to do this.
| Whole World Needs Quiet.
| with the silencer in universal use
human beings will become far more
sensitive to loud noises than they are
| to-day. Once we begin to live in an
, atmosphere of peace brought about by
| the protection of our silencers. the
nervous system viii soon get IN tine
habit of strenuously obiecting TO OBJ
truding noises. OF course we sadly
need quiet l have always thought Of
the universal suencer as primarily
| Tor the SICK III the NOISY lOS plldto -
the large cities. But there are a thou
sand and one ways in which the de-
vice will help us all.
| Perhaps 1t will be II interest IL |
tell how l came finally to the longing
FOR device for si,encinG noise. ] will
tell briefly about the gun silencer.
That, as you know, has extracted all
noise when a gun was fired. The noise
vas caused by the sudden vibration
of the powder gases. My problem
was to stop that noise by checking the
gas in some way.
Il sought for three years for a way
to check the gas and not the bullet.
had to have a hole for the bullet to
pass through and keep the gas in the
gun. 1t was on the principle of the
man who went looking for coal hole
that would be impervious to the legs
Of passersby and yet pervious to the
coal.
Story of Gun Silenoer.
Just as a man does when he has a
great want. l compared every phe-
nomenon of my daily life seeking for
the clew to my problem.
"One morning when I was taking