One these
ways consists producing suitable ap
paratus rays radiations—that is, disturb-
25 ances—which are propagated straight lines
through space, directing them upon receiv
ing reeordingapparatus distance, and
thereby bringing the latter into action. This method, furthermore, allows ad
vantage taken many those im- 85
provements which are practicable the or
dinary systems transmission involving the
use metallic conductor. The
electrifications communicated the earth
spread all directions through the same,
reaching distant circuit which generally 70
has its terminals arranged and connected
similarly those the transmitting source
and operates upon highly-sensitive receiver.
NIKOLA TESLA, NEW YORK, Y.
METHOD INTENSIFYING AND UTILIZING EFFECTS TRANSMITTED THROUGH NATURAL MEDIA.
A
pplicationfiledJune24,1899. Another method consists in
passing current through circuit, prefer
ably one inclosing very large area, inducing
35 thereby similar circuit situated at. 55
In several applications filed and pat
ents granted have disclosed other
methods accomplishing results this na
ture, which may briefly described fol
lows: one system the potential point 60
or region the earth varied imparting
to intermittent alternating electrifica
tions through one the terminals suit
able source electrical disturbances which,
to heighten the effect, has its other terminal 65
connected insulated body, preferably
of large surface and elevation. This
method the oldest and best known and has
30 been brought particularly into prominence
in recent years through the investigations of
Heinrich Hertz. such 80
means air strata, which are easily accessible,
are rendered available for the production of
many desired effects distances, however
great. 685,953, dated November 5,1901. R
enew
edM
ay29,1901, SerialN
o.
SPECIFICATION form ing art Letters atent No. dis
tance another current and affecting the
same any convenient way receiving de
vice.
Another method based upon the fact that
the atmospheric air which behaves ex- 75
cellent insulator currents generated or
dinary apparatus becomes conductor under
the influence currents impulses enor-
mously-high olectromotive force which have
devised means for generating. Still another way, which has also been
known for many years, pass any snit-
40 able manner current through portion of
the ground, connecting two points
of the same, preferably considerable dis
tance from each other, the two terminals a
generator and energize part the cur-
45 rent diffused through the earth distant cir
cuit which similarly arranged and ground
ed two points widely apart and which is
made act upon sensitive receiver.
Several ways methods transmitting
electrical disturbances through the natural
media and utilizing them operate distant
20 receivers are now known and have been ap
plied with more orless successforaccomplish-
ing variety useful results.)
To all ivhom concern:
Beit known that ikola Tesla, citizen
of the United States, residing New York,
in the county and State New York, have
5 invented new and useful Improvement in
Methods Intensifying and Utilizing Effects
Transmitted Through the Natural Media, of
which the following specification, refer
ence being had the accompanying draw-
io ings, 'which form part the same.United States Patent Office. These
various methods have their limitations, one
50 especially, which common all, being that
the receiving circuit instrument must be
maintained definite position with respect
to the transmitting apparatus, which often
imposes great disadvantages upon the use of
the apparatus.
The subject present invention an
improvement the art utilizing effects
transmitted from distance receiving
device through the natural media; and con-
15 sists novel method means which
results hitherto unattainable may secured.
Obviously whatever method employed
it desirable that the disturbances produced 90
by the transmitting apparatus should as
powerful possible, and the use cer
tain forms high-frequency apparatus which
I have devised and which are now well known
important practical advantages are this re- 95
spect secured. Furthermore, since most
cases the amount energy conveyed the
distant circuit but minute fraction the
total energy emanating from the source is
necessary for the attainment the best re- xoo
suits that whatever the character the re
ceiver and the nature the disturbances as
much possible the energy conveyed
should made available for the operation
. 62,315, (llom
odel
