illustrative
of modified embodiment the invention. sectional view part of
the commutator employed; and Fig.
The brush connected the main B
through primary coil low self-induc
tion inductive relation secondary 95
which constitutes the ultimate source the
current high frequency which the appara
tus designed develop and which feeds a
circuit containing vacuum-tubes single
terminal lamps M', other suitable devices..
C circuit controller commutator, 60
portion only for convenience being shown in
the figures.
APPARATUS FOR PRODUCING ELECTRIC CURRENTS HIGH FREQUENCY,
SPECIFICATION forming art etters atent No, 577,670, dated February 23,1897. 70
The spaces between two adjacent projec
tions bars are equal arc the width
of one said bars and are filled with blocks
e, preferably metal, insulated from the other
conducting portions the device. designed rotated by
any suitable motive device, which, how
ever, the shaft. only shown, and its plan
of construction follows: 65
The letters designate two metal heads
or castings with projecting portions d!,
which, when the two heads are brought to
gether and secured hub shaft, inter
mesh, shown the drawings. 100
The brushes are connected with the main
B through condensers N', respectively, and
to the main through self-induction chok
ing coils O', these latter being used order
. Upon the pe-
ripliery this commutator bear three brushes
G II, the two former resting upon the con- So
tinuons metallic portions the two heads, re
spectively, the latter being position bear
upon the projections and blocks alter
nately.) ,
To all luhom concern:
Be known that citi
zen the United. 55
Let designate the two conductors of
any circuit from which the energy derived
that converted into current high
frequency.
The apparatus for converting electric cur
rents ordinary character into those high
frequency, which have heretofore shown
and described applications for Letters
15 Patent, has usually comprised condenser
and circuit-controller operated suit
able motive device and acting alternately
charge the condenser from suitable source
of supply and discharge through circuit
20 such character render the discharge
one very high frequency. Fig.
For certain purposes desirable for
economical operation that there should no
cessation the flow such currents, and my
3s present improvements have been devised with
the object increasing the output given
apparatus providing means which,
without material additions complication
of such apparatus, high-frequency currents
40 may produced thereby continuously or
without periods rest. States, residing New
York, the county and State New York,
5 have invented certain new and useful Im
provements Apparatus for Producing- Elec
tric Currents Iligh Frequency, which
the following specification, reference be
ing had the drawings accompanying and
to forming part the same.
In order that the brushes may capable S5
of carrying any current which the operation
of the apparatus may demand, they are made
of large cross-section, the brush being ap
proximately equal width one the pro
jections segments d', the space be- 90
tween adjacent segments, that passing
from one comes into contact with the next.
In the drawings hereto annexed, Figure 1
50 diagrammatic illustration the arrange
ment and circuit connections the inven
tion.
A
pplicationfiled Septem
ber3, 1896. a
diagram similar that Fig.
Broadly stated, the improvement consists
in the combination two condensers with a
circuit-controller such character and so
45 operated single motive device to
charge and discharge said condensers alter
nately, -whereby one will discharging while
the other being charged, and conversely. follows from this that the
working circuit, that which the high-
frequency currents are developed form for
30 practical application, receives such currents
during only one-half the time.
NIKOLA TESLA, NEW YORK, Y. the 75
interposition mica other suitable insu
lating material the two heads castings d
are insulated from each other. For many
purposes has been found advantageous
to construct the circuit-controller with in
sulating and conducting segments equal
25 length, that the condenser connected
with its discharge-circuit during one-half of
the time only. (H
om
odel. SerialH
o, 604,723
