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In the accompanying drawing haVe shown
graphically, disposition apparatus which
may be’used applying practically in
vention. By
taking advantage the facts above pointed
out and the means described have found
it possible secure rise electrical pres
sure excited circuit very maqy times 123
greater than has heretofore been obtainable,
and this result makes practicable, among
other things, greatly extend thé distance
of transmission ofsignals and exclude much
more effectively interference with the same
than has been possible heretofore. The advantages offered 95
the invention are still more fully realized
when the circuit the transmitter instead
of having impulses arbitrary frequency
impressed upon itself permitted vibrate
at its own rate, and more particularly -100
be energized the freely-oscillatinghigh-fre
quency discharges condenser.
I not course intend limit myself to
the specific manner and means described of
artificial cooling, nor the particular forms 120
and arrangements the circuits shown.) The former coil, supposed form-,
ing part the transmitter, is. diminishing the resistance the circuit. The vihjrations coil greatly 80
strengthened, spread distance and on
reaching the tuned receiving-condnctorB' ex
cite corresponding oscillations the same,
which, for similar reasons are intensified,
with the result inducing correspondingly 85
stronger currents oscillations circuit A',
including the receiving device.
For example, when system transmis
sion energy for any purpose through the
15 natural media the transmitting and receiving
conductors are connected earth and an
insulated terminal, respectively, the lengths
of these conductors should on,e-quarter of
the wave length the disturbance propa
se gated through them. 103
tion the resonating-circuit which at
tribute the increased intensity well as
greater number the high-frequency oscilla
tions obtained the circuit The recéiving-
coil energized stronger proportion and 11©
induces currents greater intensity the
circuit A'. such a
case the cooling the conductorA,which may
be effected any suitable manner, results in
aň extraordinary magnification the oscilla-.
5© From the foregoing the operation the ap
paratus will now readily understood. Very
often, however, the conditions may such
that the gain sought not realized directly
by. Corresponding oscillations will then
bo induced the circuit which, being con
structed and adjusted, before indicated, so
as vibrate the same rate, will greatly
60 magnify them, the iucrease being directly
proportionate the product thé frequency
of the oscillations and the inductance cir
cuit and inversely the resistance the
latter. evident from the above that
the greater the number the freely-vibrating
circuits which alternately receive and trans
m energy from one another the greater, |
relatively, will the gain secured apply
ing invention. inductive relation said
35 coils each instrument flat spirally-
wound coil B', one terminal which is
shown connected ground-plate C,while
the other, leading from the center, adapted
to connected insulated terminal,
40 which generally maintained elevation
in the air.esSjOis
carrying out the invention which now
aware surround the freely-vibrating cir
cuit conductor, which maintained
at low temperature, with suitable cooling
5 medium, which may any kind freezing
mixture agent, such liquid air, and in
order derive the fullest benefit from the
improvement the circuit should primarily
constructed have the greatest possi-
10 ble self-induction and the smallest practica
ble resistance, and other rules construction
which are now recognized should observed.
25 The drawing illustrates perspective two
devices, either which may the transmit
ter, while the other the receiver. Other conditions remaining the same,
65 the intensity the oscillations the roso-
nating-circuitB will increased the same
proportion its resistance reduced.
45 Coils the form flat spiral, such ha
those described, are eminently suited for the
production free oscillations; but obviously
conductors circuits any other form may
be used, desired. each
there coil few turns and low resistance,
(designated one and the other by
30 A'. The coils are placed in
sulating receptacles which Contain the
freezing agent and around which the coils A
and are wound. When, as
may the case the transmission intel
ligible signals, the circuit periodically
closed and opened, the effect upon the re- 90
ceiver heightened in.
Having now described invention, what
I claim is—
1.the manner above de
scribed not only because the impulses the
coilsB and are strengthened, but also ac
count their persistence through longer
interval time. The combination with circuit adapted
.to connected
with suitable source current, while the
latter included circuit with re
ceiving device. 7©
In such cases the skilled expert who applies
the invention will turn advantage the re
duction resistance usipg correspond
ingly longer conductor, thus securing much
greater self-induction, and under all circum- 75
stances will determine the dimensions of
the circuit, get the greatest valueiof
the ratio its inductance its resistance,
which determines the intensity the free os
cillations. As
sume, first, the simplest case that upon
the coil the transmitter impulses os
cillations arbitrary frequency and irre-
55 spective its own free vibrations are im
pressed
