(N
om
odel,)
To all whom may cbncerfi:
Be known that citi
zen the United States, residing the bor
ough Manhattan, the city New York,
S county and State New York, have invented
certain new and useful Improvements Ap
paratus for the Transmission Electrical
Ehergy, which the following specifica
tion, reference being had the drawing ac-
i companying and forming part the same. By
such adjustment proportioning the 90
length wire the secondary coil coils
the points highest potential are made to
coincide with the elevated terminals D',
and should understood that whatever
length given the wires this requirement 93
should complied with order obtain
the best results. 650,343, entitled Systems transmis
sions electrical energy,” and based upon
1$ new and useful features and combinations of
apparatus shown and described said appli
cation for carrying out the method therein
disclosed and claimed.
This application division applica
tion filed September 1897, Serial
No. The other terminal the secondary
A connected earth, and, desired, to
the primary also, order that the latter may
be substantially the same potential the 55
adjacent portions the secondary, thus in
suring safety.
Original application filed September 2,1897, Seriál No, 650,343. 649,681, dated 15, 1900.nited States Patent Office. 75
By way illustration, the rate which
the current traverses the circuit including
the coil one hundred and eighty-five thou
sand miles per second then frequency of
nine hundred and twenty-five per second 80
would maintain nine hundred and twenty-five
stationary moves circuit one hundred
and eighty-five thousand miles long and each
wave would two hundred miles length.
APPARATUS FOR ELECTRICAL ENERGY.
40 The apparatus one point used a
transmitter, the coil this case constitut
ing high-tension, secondary, and the coil C
the primary, much lower tension, trans
former.
It will readily understood that when the
above-prescribed relations exist the best cofi-
ditions for resonance between the transmit- 100
.
30 This apparatus shown the accompany
ing drawing, which diagrammatic illus
tration the same.
The invention which forms the subject of
zo toy present application comprises transmit
ting coil conductor which electrical cur
rents oscillations are produced and which
is arranged cause such currents oscilla
tions propagated conduction through
25 the natural medium from one point another
remote therefrom and receiving coil con
ductor such distant point adapted ex
cited the oscillations currents propa
gated from the transmitter. second coil formed a
Conductor much larger size and smaller
length wound around and proximity the
coil A. the cir
cuit the latter are connected lamps mo
tors other devices for utilizing the cur
rent.
For such low frequency, which would 83
resorted only when indispensable for
the operation motors the ordinary kind
under the conditions above assumed, would
use secondary fifty miles length. the circuit the primary in-
43 eluded suitable source current One
terminal the secondary the center
of the spiral coil, and from this terminal the
current led conductor terminal
D, preferably large surface, formed or
50 maintained such means balloon an
elevation suitable for the purposes thlns-
mission.
NIKOLA TESLA, NEW YORK, Y. the receiving-station a
transformer similar construction em
ployed but this case the longer coil con
stitutes the primary, and the shorter coil 60
the secondary, the transformer.
The length the thin wire coil each
transformer should approximately one- 70
quarter the wave length the electric dis
turbance the circuit, this estimate being
based the velocity propagation the
disturbance through the coil itself and the
circuit with which designed used.
A coil, generally many turns and of
a very large diameter, wound spiral form
35 either about magnetic core not, may
be desired.
SPECIFICATION forming art Letters atent No. Serial
N
o. The elevated terminal D'connects with
the center the coil A1
, and the other ter- 65
minal said coil connected earth and
preferably, also, the coil for the reasons
above stated. 5,780. Divided dud this application filedFebruary 19,1900
