R
e ew
ed
M
ay29, 1901.721,790.June24,1899, SerialH
o.
SPECIFICATION forming art etters atent No. C
N
om
odel.
This method the oldest and best known,
and has been brought particularly into promi
nence recent years through the investiga
tions Heinrich Hertz.62,317.
strumeut must maintained definite po
sition with respect the transmitting appa- 60
ratiis, which often imposes great disadvan
tages upon the use the apparatus. 95
Obviously whatever method employed
it desirable that the disturbances produced
by the transmitting apparatus should as
powerful possible, and the use cer
tain forms high-frequency apparatus which 100
.
or region the earth varied imparting
to intermittent alternating electrifica
tions through one the terminals suit- 70
able source electrical disturbances, which
to heighten the effect has its other terminal
connected insulated body, preferably
of large surface and elevation. The
electrifications communicated the earth 75
spread all directions through the same,
reaching distant circuit, which generally
hás its terminals arranged and connected
similarly those the transmitting source,
and operates upouahighly-sensitive receiver. These various methods have their
limitations, one, especially, which common
to all, being that the receiving circuit in- . SerialN
o.United States Patent Office. The in
vention present application consists in
the apparatus hereinafter described and
20 claimed, the use which the method
claimed said prior application may be
practiced and means which results hith
erto unattainable may secured. D
ividedandthisapplicationfiledSeptem
ber8,1899. 685,955, dated November 1901.
721,790, which method utilizing effects
15 disturbances transmitted through the nat
ural mediafrom distant source isdescribed
and made the subject the claims. Still another way, which
has also been known for many years,is pass
in any suitable manner current through a
portion the ground, connecting to
two points the same, preferably con-
50 siderable distance from each other, the two
terminals generator and energize a
part the current diffused through the earth
a distant circuit, which similarly arranged
and grounded two points widely apart and
which made act upon sensitive re- 55
ceiver.)
To all whom may concern:
Be known that Nikola Tesla, acitizen
of the United States, residing the borough
of Manhattan, the city, county, aud State
S New York, have invented certain new and
useful Improvements Apparatus for Util
izing Effects Transmitted from Distance to
a Receiving Device Through the Natural Me
dia, which the following specification,
io reference being had the accompanying
drawings, which form part the same.
NIKOLA TESLA, NEW YORK, Y.
O
riginalapplicationfiled
. such
means air strata, which are easily accessible,
are rendered available for the production of
many desired effects distances, however 90
great.
In several applications filed and pat
ents granted have disclosed other
methods accomplishing results this na- 65
ture, which may briefly described fol
lows: one system the potential poin-t .
APPARATUS FOR UTILIZING EFFECTS TRANSMITTED FROM DISTANCE RECEIVING DEVICE
THROUGH NATURAL MEDIA. 80
Another method based upon the fact that
the atmospheric air, which behaves ex
cellent insulator currents generated or
dinary apparatus, becomes conductor un
der the influence currents impulses 85
enormously high electromotive force which I
have devised means for generating. This method, furthermore, allows ad
vantage taken many those improve
ments which are practicable the ordinary
systems transmission involving the use of
a metallic conductor.
Several ways methods transmitting
25 electrical disturbances through the natural
media and utilizing them operate distant
receivers are how known and have been ap
plied with more less success for accom
plishing variety useful results. Another method
40 consists passing current through cir
cuit, preferably one inclosing very large
area, inducing thereby similar circuit,
situated distance, another current and
affecting the same any convenient way
45 receiving device.
This application division appli
cation filed June 24, 1899, Serial No. One of
30 these ways consists producing suit
able apparatus rays radiations—that is,dis
turbances—which are propagated straight
lines through space, directing them upon a
receiving recording apparatus distance,
35 and thereby bringing the latter into action
