This method the oldest and best
known and has been brought particularly into
prominence recent j’ears through the in-
50 vestigations Heinrich Hertz. Renewed
May29,1901.
necting two points the same, preferably 60
at considerable distance from each other,
the two terminals generator and en
ergize part the currentdiffused through
the earth distant circuit, which similarly
arranged and grouuded two points widely 65
apart and which made act upon sensi
tive receiver. (Bomodel.
NIKOLA TESLA, NEW YORK, Y.
In several applications filed and pat
ents granted have disclosed other 75
methods accomplishing results this na
ture, which may briefly described fol
lows: one system the potential point
or region the earth varied imparting
to intermittent alternating electrifica- 80
tions through one the terminals suit
able sourceof electrical disturbances, which,
to heighten the effect, has its other terminal
connected insulated body, preferably
of large surface and elevation. such
means air strata, which are easily accessible,
are rendered available for the production 100
many desired effects distances however
great. One of
these ways consists producing suit
able apparatus rays radiations—that is,
disturbances —which are propagated in
straight lines through space, directing them
— upon receiving recording apparatus a
distance, and thereby bringing the latter into
action. 685,956, dated November 1901
OriginalapplicationfiledAugust 1,1899, Serial Bo. The 85
electrifications communicated the earth
spread all directions through the same,
reaching distant circuit, which generally
has its terminals arranged and connected
similarly those the transmitting source 90
and operates upon highly-sensitive receiver. 725,749.
The subject present invention an
improvement the art utilizing effects
transmitted from distance receiving de-
15 vice through the natural media; and con
sists the novel apparatus hereinafter de
scribed.-Pa .)
To all whom may conce-7'n:
Be known that Nikola Tesla, citizen
of the United States, residing New York
city, the county and State 'New York,
5 have invented new and useful Improvement
in Apparatus for Utilizing Effects Transmit
ted from Distance Receiving Device
Through the Natural Media, which the fol
lowing specification, reference being had
io the accompanying drawings, which form a
part the same. These various methods have
their limitations, one especially, which is
common all, being that the receiving cir
cuit instrument must maintained 70
definite position with respect the trans
mitting apparatus, which often imposes great
disadvantages upon the use the apparatus.
Another method based upon the fact that
the atmospheric air, which behaves ex
cellent insulator currents generated or-
dinaryapparatus,becomesaconductorunder . SerialBo, 62,318.
SPECIFICATION forming part tetters Patent No.
APPARATUS FOR UTILIZING EFFECTS TRANSMITTED THROUGH NATURAL MEDIA.
My invention particularly useful eou-
25 nection with methods and apparatus for op
erating distant receiving devices means
of electrical disturbances produced proper
transmitters and conveyed such receiving
devices through the natural media; butitob-
30 viously has wider range applicability
and may employed, for example, the in
vestigation utilization terrestrial, solar,
or other disturbances produced natural
causes. Dividedandthis applicationfiledBovemher 2,1899. This method, furthermore, allows ad-
.
and affecting the same any convenient 55
way receiving device.
35 Several ways methods transmitting
electrical disturbances through the natural
media and utilizing them operate distant
receivers are now known and have been ap
plied with more less success for accom-
40 plishing variety useful results. Another
method consists passing currentthrough
a circuit, preferably one inclosing very
large area, inducing thereby similar cir
cuit situated distance another current . 725,749, and
20 based upon and claiming the method herein
described and which may practiced the
use the apparatus forming the subject of
this application.
This application division one filed
by August 1899, Serial No.
the influence currents impulses enor
mously high electromotive force, which have
devised means for generating. Still another way,
which has also been known for many years,
is pass any suitable manner current
through portion the ground, con-
