413,353, dated October 22, 1889. Tesla, sub
ject the Emperor Austria, from Smiljan,
Lika, border country Austria-Hungary,
5 temporarily residing’ New York city, the
State New York, have invented certain
new and useful Improvement Methods of
Obtaining Direct from Alternating Currents,
of which the following specification, ref-
io erence being had the drawings accompany
ing-and forming part of. -The result 70
this disposition is, that the waves cur
rent one sign will, partly wholly*, pass
over one the paths branches, while those
of the opposite sign pass over the other., ASSIGNOR TWO-THIRDS ALFRED
S. Assume,
for example, that these devices are batteries, 60
primary secondary, continuous-current
dynamo-machines. 90
Figure represents plan directing the
alternating currents means devices
purely*-electrical character. Figs. The current either
branch may used the same "way and 80
for the same purposes any* other direct
current—that is, may* made charge
secondary*batteries, energize electro-magnets,
or for any other analogous purpose. 4,
5, G
, and’7 are diagrams illustrative other
ways carrying out the invention, which 95
will hereinafter more particularly* de
scribed.
In the drawings I-have illustrated some 85
the various ways which may* carry* out
this invention.
In nearly all the more important industrial
applications electricity the current pro
duced dynamo-electric machines driven by
15 power, the coils which the currents de
veloped are primarily reverse directions
or alternating; but very many electrical de
vices and systems require direct currents, it
has been usual correct the current alter-
2o nations means commutator, instead
of taking them off directly from the generat
ing-coils.
In one these paths insert some device 55
create electro-motive force counter the
waves impulses current one sign and
a similar device the other branch which
opposes the waves opposite sign.)
To cull whom, concern:
Be known that Nikola. The waves impulses of
opposite direction composingthe main current
have natural tendency divide between the
two branches; but reason the opposite 65
electrical character effect the two
branches one will offer easy passage a
current certain direction, while the other
will offer relatively high resistance the
passage the same current.
There may* thus obtained from alter- 75
nating current two more direct currents
without the employment any* commutator
such has been heretofore regarded as
necessary* use.
METHOD OBTAINING DIRECT FROM ALTERNATING CURRENTS,
SPECIFICATION forming' part Letters Patent No.United States Patent Office. designates generator alter
nating currents, and the main line
circuit therefrom.
The superiority alternating-current ma
chines ail cases where their currents can
25 used advantage renders their employ-
.
I may* consider herein only the case a
circuit divided into two paths, inasmuch as
50 any farther subdivision involves merely an
extension the general principle. ment very desirable, they may much
more economically constructed and operated;
and the object this present, invention
is provide means for directing convert-
30 ing will one more points circuit
alternating into direct currents.
NIKOLA TESLA, NEW YORK, Y. any given point xoo
.the same.
In Fig.
ApplicationfiledJíme 12,1889, SerialH
o, 314,069, (H
om
odel.
Stated broadly able express
it, invention consists obtaining direct
from alternating currents, directing the
35 waves alternating current pro
duce direct substantially direct currents
by developing producing the branches
of circuit including source alternating
currents, either permanently periodically,
40 and electric, electro-magnetic, magnetic
agencies, manifestations energy, what
may termed active resistances oppo
site electrical- character, whereby the cur
rents current-waves opposite sign will
45 diverted through different circuits, those
of one sign passing over one branch and those
of opposite sign over another. Selecting,
then, any circuit through which flowing an
alternating current, divide such circuit at
any desired point into two branches paths.
The several figures are diagrammatic in
character, and will described detail in
their order. BROWN, SAME PLACE, AND CHARLES PECK, ENGLEWOOD,
NEW JERSEY
