The Morning Tulsa daily world. [volume] (Tulsa, Okla.) 1919-1927, 1919-04-20
Speaking Through Space

OF uIl lhr Inventions which have
sprung from ihr war. none Is wur"
amazing fec uN way ~ thinking lhfu
tho radio telephones ThinN ~ stand
iug ON lhr ground Hud holding % con. .
yrrtatiuu. In u normal luu1 Of yu.or.
with an aviator so high m do" rhH
that You cannot Zee his u'Ipltur Win
tho naked eye Think Of co. lioipro
we entered the war pnyOn" save &
handful uf enthusiastic scientists
would have ridiculod such u shggrs-
ton, yet today ut any on" uf "A SCORE
OF flying fields YOU can ait at an or
flee desk and converse win uNlhlorA
In the clouds nR rasily ~ though you
we're sitting opposite them N Il am
ner table Thanks to TINS miracle ut
science tho commander OF an air
squadron ~ able 60 control ihc move
mcnt Of his men IN tho ulr Just hs a
drill sergeant directs the cNoIuiiuns
of platoon on the ground, accord
inE 10 America munitions l9l d
1915" he rcCcut report OF the aH"
sisiant secretary ~ war BENEDICT
CTowcll
The enormous advantage Fuch
an invention would give 10 the army
posseasing il was early recognized by
fffthln ftffli " ~ fHh hlllf'A y hNli ~ '''
scientifically minded officers OF the
signal corps, and. hs u result of their
enthusiasm. before the FIRST ConilnR
ent sailed for France work had been
begun on the development Of a radio
telephone set FOR nirplnncS. There Is
no necessity OF recountinR the IN
Vulnerable experiments and heart
breaking failures before the first real
succ eases werc obtained. so FAR NJ
the radio part Of the problem was
concerned an answer was had In "a
comparatively short time. Ilut work To-
ing this apparatus In a swift NOV
ing and terrifiCplly noisy airplhne
was quite different matter, II was
quickly discovered, from working II
under ordinary conditions on the
ground, the roar OF the engine ana
the rushing OF air making II I'M
possible to hear ones own voice,
much less the weak signals OF the re-
celyer. one OF the first problems 10
he solved therefore. was 10 dcS,gr =
head .sot which would exclude these
noises while at the same timo per
hitting tho voice OF tho telephone 10
he heard. The answer was round IN
form ot aviator's helmet fitting the
head No closely ns 20 exclude VIZ tuaI
ly all CNtfnntuua hNuHuH H"N' '''f'
coming through telephone receiver
inserted In the helmet 80 as to nj the
ears,
shutting Out the Noises.
No sooner was this problem solved,
however. than another one demand
cd solution means had been ue-
vlsed for protecting the receivers
from outside noises hut how about
tn trnnsmitter2 Everyone knows now
sensitive the ordinary telephone
transmlttcr ts to eNtran"ous SOUNDS
so II doc. not require much imag,nh-
tion to picture how Impossible II
would hc for the aviator to make hlt
voice heard in n transmittor along
side n zoo horsepower hirplah" en-
ginc nut a brilliant series Of cNpcrl j.
menta. conducted largely by j, =
NIntan, OF the Western Electric com
many rrsultedoin n form NJ telephone
transmittcr or microphonc which pos
sssscd the remarkable quality uf be
ing lnsensihle to engine aud vino
noises and AZ the same time highN
| reeponsiVe to the tones of the voice
with these two elements In hand 4
was thought that the problem wa
solved, hut three more months ot m
rrmlttlng work were required To per
| feet the apparatus Ia u state 80 INA
n wna practicable for use by oihcT'
thnn experts At last everything wa
ready. however, and in December