462,418, dated November 1891, and No. modification 90
the same.
The invention which forms the subject of
my present application embodied im
provement electrical apparatus in
vented and described prior Letters
15 Patent, notably United States Patents No. 568,176, dated September 22, 1896. 1,A designates any source
of direct current.)
To all whom concern:
Be known that Nikola Tesla, citizen
of the United States, residing New York,
in the county and State New York, have in-
S vented certain new and useful Improvements
in Apparatus for the Production Electric
Currents High Frequency and Potential,
of which the following specification, ref
erence being had the drawings aecompany-
io ing and forming part the same. any
given circuit, Avhich for present purposes may
be considered commying direct currents
or those substantially the character di
rect continuous currents and which for
50 general purposes illustration may as
sumed branch derived circuit across
the mains from any ordinary source, inter
pose device devices the nature a
choking-coil order give the circuit a
high self-induction.
NIKOLA TESLA, NEW YORK, Y. 588,534.
Around the break point interruption I
place condenser condensers store the-
energy the discharge-current, and lo- 60
cal circuit and series with such condenser
I place the primary transformer, the sec
ondary which then becomes the source of
the currents high frequency. (N
om
odel. Moreover, will observed 75
that since the self-induction the circuit
through Avhich the condenser discharges, .
The object present improvements is
35 provide simple, compact, and effective
apparatus for producing these effects, but
adapted more particularly for direct applica
tion and use Avith existing circuits carry
ing direct currents, such the ordinary mu-
40 nicipal incandescent-lighting circuits.
Referring Fig. Avill be
apparent from consideration the condi- 65
tions involved that were the cendenser be
directly charged the current from the
source and then discharged into the Avorking
circuit very large capacity Avould ordinarily
be required, but the aboA-e arrangement 70
the current high electromotive force which
is induced each break the main circuit
furnishes the proper current for charging the
condenser, which may therefore small and
inexpensive. any branch the cir
cuit from said source, such, for example, as
Avould formed the conductors 95
from the mains and the conductors K,
are placed self-induction choking coils B
B and circuit -controller This latter
mají- ordinary metallic disk cylinder
with teeth separated segments 100
Avhichone more pairs, diametrically
opposite, are integral electrical contact
with the body the cylinder, that when
the controller the position which the
. The
way which accomplish this, meet
the requirements practical and economical
operation under the conditions present, will
be understood from general description of
45 the apparatus Avhich hav'e devised. The apparatus, whole, involves
means for utilizing the intermittent oscil
lating discharge the accumulated electrical
energy condenser circuit possess-
30 ing capacity what may designated the
‘‘working ”circuit, that which contains the
translating devices those which are oper-
’ated such currents. Serial Eo.United States Patent Office.
ApplicationfiledApril 22,1898.
' The object sought this invention may be
realized specifically different arrange
ments apparatus,but the drawings hereto
annexed have illustrated forms which are 85
typical the best and mostpracticable means
for carrying out the invention which am
at present aware.
SPECIFICATION form ing part Tetters atent No.
AvelLas the capacity the condenser itself,
may given practically any desired value,
the frequency the discharge-current may 80
be adjusted will. This apparatus
Avas devised for the purpose commrting
and supplying electrical energy form
20 suited for the production certain novel
electrical phenomena which require currents
of higher frequency and potential than can
readily e\T
en possibly developed gen
erators the ordinary types such me-
25 chanical appliances were theretofore
knoAvn.
APPARATUS FOR PRODUCING ELECTRIC CURRENTS HIGH FREQUENCY AND POTENTIAL.
454,622,dated June 23, 1891. also provide circuit- 55
controller any proper character that may
be operated make and break said circuit.
Figure diagrammatic illustration of
the apparatus, and Fig
