METHOD CONVERTING AND DISTRIBUTING ELECTRIC CURRENTS. The current de
veloped thereby conducted through trans-
35 mission-circuit one more distant points,
at which the transformers are located. Serial No. These
consistofinduction-machines ofvarious kinds.
This invention relates those systems of
electrical distribution which current from
a single source supply main trans-
ts mitting circuit caused induce, means
of suitable induction apparatus, current or
currents independent working circuit or
circuits. This method consists in
progressively and continuously shifting the 90
line points maximum effect induct
ive field across the convolutions coil or
conductor within the influence said field
and included forming part second
ary translating circuit. The motor-coils are generally of
fine wire and the generator -coils coarser
wire, produce current greater
quantity and lower potential than theline-cur- 60
rent, which relatively high potential to
avoid loss long transmission.1888.moving devices,which use wear out and
require attention.
266,757.
The main objects the invention are the
20 same have been heretofore obtained the
use these, systems—viz. 382,282, dated May 1. The transformers are very liable be
injured and burned out, and the means resorted
to for curing this and other defects have in
variably been the expense efficiency. 258,787.
NIKOLA.)
To all whom concern:
Be known that Nikola Tesla, from
Smiljan, Lika,border country Austria-Hun
gary, and now residing New York, the
5 county and State New York, have invented
certain newand useful Improvements Meth
ods Converting and Distributing Electric
Currents, which the following specifica
tion, this application being division anap-
ic plication filed December23, 1887, Serial
No. 80
have discovered amethodofconversion anddis-
tribution, however,which not subject the
defects and objections which have alluded,
and which both efficient and safe. For instance,
a motor constructed accordance with well-
understood principles, and the same arma- 55
ture are wound induced coils which constitute
a generator. lied these devices
various forms electro-dynamic induction*
machines, including the combined motors and
generators, have been devised. 258,787.
In some cases ordinary forms induction-
coil have been used with one coil the trans-
40 mitting-circuit and the other local con
sumption circuit, the coils being differently
proportioned, according the work be
done the consumption-circuit—that to
sayj the work requires current higher
45 potential than that the transmission-circuit
the secondary induced coil greater
length and resistance than the primary, while,
on the other hand, quantity current of
lower potential wanted, the longer coil is
50 made the primary.
SPECIFICATION forming part Letters Patent No.
Original application filed December 23,1837, Serial No.nited States Patent Office. TESLA, NEW YORK, Y. Divided and tlrs application filed March 9,1883., divide the cur
rent from single source, whereby number
of lamps, motors, other translating devices
may independently controlled and operated
25 the same source current, and some
cases reduce current high potential in
the main circuit one greater quantity and
lower potential the independent consump
tion working circuit circuits. similar ar
rangement wind coils corresponding to
those described ring similar core, and
by means commutator suitable kind 65
direct the current through the inducing-coils
successively, maintain movement of
the poles the core the lines force
which set the currents the induced coils. 95
In carrying out invention provide a
series inducing-coils and corresponding in
duced coils which, preference, wind upon
a core closed upon itself~--such annulus
or ring—subdivided the usual manner.
Without enumerating the objections these 70
systems detail, will suffice say that the
theory the principle the action oper
ation these devices has apparently been so
little understood that their proper construc
tion and use have, the present time, been 75
attended with various difficulties and great ex
pense.
30 The general character the devices em
ployed these systems now well understood.
An alternating current magneto-machine is
used source supply. secure
by conversion true dynamic induction 85
under highly efficient conditions and without
the use expensive complicated apparatus
or. (No model. The 100
two sets coils are wound side side su
perposed otherwise placed Veil-known
