Every evening, Wilmington daily commercial., 1921-04-21
Writing By Wireless
~ Frederic J liaskIn


washington. April CA written
message transmitted 1000 miles IN
.,.n,ancouslv without wire or cable is
thc latest feat Of wireless tcieRraph!.
Tbts wireless writing machine. which
,lt make il possible for man IN the
,yilds of Alaska t. capture the news oi
th.. world in written form by mereiy
settiug a trap for II. 50 To SPEAK anu
IA, which an explorer might locate ms
,,osttioD on the face at the tafth "A
ui,.l,ss within 80 feet OF exact, IS the
Invention of twu government S'lcu''s'S
x,,rktnr In thu, Bureau of StahdaIuS.
Another t;nVrrnmcnt department. 'lt
,,,4.t and C;codCtiC Survey. expects !"
H. ~ MS. of il this summer,
time, times as much as 1t cost TO per
t,,, th,, invention and max" tWo "i NV
.,,,.bin.s The achievement rs on" more
Illustration If the value ot sci'h''uc
r,-..,r,h hN tho Government depart
,..t- which gets such sCantN support
Th, machine itself. simple I""Nil'N
ann. which Weighs about - p""hHS'
,.>.iu-.,,. a. The two storage hat'''i'S
and nj. metal chron"graph drum u
IN. t,..llr - rtScarCh work hN IN. T.
\ E,khl1,lt and Dr. J. & htf'her'
small tu So. light m weight ana 'iSH
~ .perat, 4, offers So'uti"n I" many
a. Tho NyNtus problems no" cN's'lhs
m ,tdla operation.
49,, example. under thc present sNS-
~, of listening Tor the dots and dash"s
w.th telephone receiver. two thr''
a. por. s,udiuE stations may. by send
.eualS ont simultaneously mix
f,... ,a, searcs in the ether. and 12m
he
.rI t~f,ulnr for one particular mes
s4e, uu-r ADJUST his apparatus to
.r,n,. ta vtvc length as nearly ~
r..s.l,.. equal ~ that OF the sender
v9.,n. H.. WISHES to catch. Tho other
s..I,ts .r,iegsl1 interfere and often
Gus. ia. receiver to lose or Earhl"
pert4 II ~. message. This new IN
,.at.s, goes a long way toward climin-
auac that difHculty.
nh. marhine was designed 70 meet
th need of an autographic wireless
I'm, te,or,l,ug apparatus 70 obNiate ia"
.Npcnsivc strinEiuE of wircs - places
r. mot, from telegraph limos and To
eliminate tn lag due - reception by
ear. ard recording Of a signal hy hand.
How IL Works.
The recording is done roughly in
fnts following
SOM technical explanation of the in-
vcntors.
Adustm,n, s made on cond"ns'r
~, ths particular wave length desired
T. h. caught IS the signals sent out
~, gathered IN by the antenna. which
an H. strung on any light poles reach
ire about 10 feet above the ground. os-
citations az, started in a local cir
oh
This local e.r,ult derives its power from
an ordinary storage battery such a'
fhos aS.d In scIf-starterS for automo-
h,,ee. Tn, starting nf these oscillations
releases enough direct current energ1
from IA, batteries. 10 operate SINAI
relay ar magnet set in some respects
hike the magnets in an ordinary electro
door hcII. hu, capable Of more dchcat'
adjustment
This relay ur magnet set. makes an
breaks power iu another circuit derives
from a second storage battery. Thi
second circuit operates another magne
set 10 which the stylus is attached
The STYLUS in the present apparatn
is an ordinary fountain pen. II Is i
contact with a revolving drum whic
has a sheet Of paper placed on Il. IN
dots and dashes arc recorded as hump
IN the otherwise straight line Shor
humps indicate dots, and long one
6aSheS.
The action can hc readily ikened t
that Ola machine gun which must b
cooked each time before il Is fret
which action takes place automaucal
and rapid, The first circuit fires n
gun and pushes hack he hammer read
- hrc again So 70 speak. As Ions .
fa, eircrnt STAYS closed the hammer
>isV~ hack Rut when tho circuit
broker. corresponding 10 pressing ia
geei. th.n the secondary circuit
closed md tho hammer or stylus goe
on ts way 20 make a mark
Ths action II the mechanism is vcr
rneh nor, Sclcc:ive than the receis
rig action roV in use L absnlutel
eliminates any chanc, - ,he mcssag
being carhlod ~ waVs lengths eve
closely Appra axinlatlue those which
vs. shes "a cath,r and record.
Permanent Record.
The record mus made on paper
permanent. and th,. message can
der!phered AT leisure. IN . recent tes
signals son: ON; from Lyons. Franc
100 miles away were caught IN =
heart Il N, residential district Of Wasi
ingtor and transferred to a recoI
which ,v.u person unskilled in II
Nors. cod, could readily translate.
The machine. that morning had bet