is,
15 moreover, preferable that the respective re
sistances the conductors should a
known and convenient fraction the coils
or resistances R".
The resistances are equal, also are
the resistances the conductors O'. The method computing the amount of
electrical energy expended given time in
an electric circuit, which consists main- 65
taining the current potential difference
between two conductors electrolytic so
lution uniform throughout the whole extent
of such conductors exposed the solution
and measuring the variation the resistance 70
in one both said conductors due the
gain loss metal electro-deposition, as
set forth. 2there
2c constant potential difference between the
two conductors throughout their entire
length. electric meter consisting tubular
cell containing electrolytic solution and 100
closed the ends, two parallel conductors ex
tending through the cell, resistance-connec
tion between the end one conductor and
the opposite end the other, and terminals
for tlie remaining ends the respective eon- 105
doctors, these parts being combined set
forth.
Witnesses:
R obt.
The chief advantages this invention are,
first, that possible read off directly the
amount the energy expended means of
50 properly-constructed ohm-meter and with
out resorting weighing the deposit; second,
it not necessary employ shunts, for the
whole the current measured may be
passed through the instrument; third, the ac-
55 curacy the instrument and correctness of
the indications are but slightly affected by
changes temperature. The combination, with electric cir
cuit, meter composed electrolytic 75
cell and two conductors passing through the
same, the said conductors being con
nected with the main circuit: and that a
potential difference uniform throughout the
whole extent exposed the solution will 80
maintained between them, set forth. the conductors are connected
in parallel, the current device pass
ing one branch first through resistance
io It' and then through conductor while in
the other branch passes first through con
ductor C', and then through resistance R".
In Fig. 90
4. further check afforded
by measuring both wires series with the re-
5 sistance, which case the resistance the
whole should remain constant.
3. The combination, with electric cir
cuit containing translating devices, me
ter composed electrolytic cell and two
conductors passing through the same and 85
connected series with the translating de
vices, and one more resistances connected
therewith for establishing- potential differ
ence between the two conductors through the
solution the cell, set forth. Gaylord,
P rker age. prefer, however,
45 for the sake simplicity compute the en
ergy measurements resistance. will understood that after each
measurement registration given varia
tion resistance one both conductors
thedirection.455,068
ureinents evidently serve check, since
the gain one conductor should equal the
loss the other.
It will seen that both cases illus
trated the proportionality the increase or
25 decrease resistance the current strength
will always preserved, for what one con
ductor gains the other loses, and the resist
ances the conductors being small as
compared with the resistances series with
30 them. addition these
advantages the invention possesses the merit
of economy the waste energy and sim
plicity, compactness, and cheapness con- 60
struction.
2.
.
This principle capable many modifica
tions. For instance, since there section
of the circuit—to wit, the conductor C'—
40 that varies resistance proportion the
current strength, such variation may util
ized, done many analogous cases, to
effect the operation various automatic de
vices, such registers. Anelectrical meter consisting elec
trolytic cell, two parallel conductors extend
ing through the same, the said conductors be
ing connected together series through re
sistance and having terminals their free 95
ends for connection with circuit, these parts
being combined the manner substantially
as set forth.of the current should changed
or the instrument reversed, That the de-
35 posit will taken from the conductor which
has gained and added that which lias lost. will observed
that the arrangement shown Fig.
NIKOLA TESLA.
What claim is—
1.
5
