In either event make due provision for main
taining difference phase between the cur
rents the two circuits branches.293,052. the system referred and de
scribed the said patents the production or
25 generation the alternating currents, upon
the combined resultant effect which the
operation the system depends, effected
by the employment alternating current
generator with independent induced circuits
30 which, reason the winding other con
struction the generator, produces currents
differing phase, and these currents are con
veyed directly from the generator the cor
responding motor coils independent lines
35 circuits. SerialN
o.
NIKOLA TESLA, NEW YORK, Y. The distri
bution the main ororiginal current through
the two motor circuits may effected in
duction derivation. 382,280,
dated May 1888, are connected deri
vation multiple arc with the conductors
of circuit including alternating current
generator.
In explanation what appears the 73
principle the operation invention
and the functions the several instru
mentalities comprised thereby, let as
sumed that the two energizing circuits an
alternating current motor, such, for example, 80
as have described Patent No., ASSIGNOR THE TESLA ELECTRIC
COMPANY, SAME PLACE. have, however, discovered that
I may produce the same similar result
by alternating current from single origi
nal source using between the generator and
motors but one line transmission circuit. 511,560, dated December 26. obvious that both circuits 83
are alike and offer the same resistance the
passage the current rotary effect willbe
produced, for although the periods the cur
rents both circuits will lag retarded
to certain extent with respect un- 90
retarded current from the main circuit, their
phases will coincide.
Applicationfiled Decemter 8,1888. Or, the other
hand, may connect the two energizing 60
circuits the motor derivation multi
ple arc with the main circuit from the source.
SPECIFICATION forming' part Letters Patent No. If, however, the coils
of one circuit have greater number con
volutions around the cores, self induction
coil included one the circuits, the 93
phases the current that circuit are re
tarded the increased self induction.)
To all whom concern:
Be known that Nikola Tesla, sub
ject the Emperor Austria-Hungary, from
Smiljan,Lika, border countryof Austria-Hun-
5 gary, residing New York, the county
and State New York, have invented cer
tain new and useful Improvements Sys
tems Electrical Power Transmission, of
which the following specification, refer-
i ence being had the drawings accompany
ing and forming part the same.1893.
In certain patents heretofore granted,I have
shown and described system electrical
power transmission which each motor con-
15 tained two more independent energizing
circuits through which were caused pass
alternating currents having each circuit
such difference phase that their com
bined resultant action they produced ro
lo tary progression the poles points max
imum magnetic effect the motor and there
by maintained the rotation its movable
element. 273,993,1have shown and described
the means which have employed for secur
ing this result inducing one energizing
current from the other. 70
My present application relates the means
employed when the two energizing currents
are obtained from single original source by
derivation. lieu increasing the
.
40 Broadly stated, this system method in
volves source alternating equivalent
currents, single transmission circuit, mo
tor having independent energizing circuits
connected with adapted for connection
45 with the transmission circuit, means for ren
dering the magnetic effects due the ener
gizing circuits different phase, and ar
mature within the influence the energiz
ing circuits; the means foraccompiishingthis
50 result being such nature retard the
current one energizing circuit greater
or less extent than the other. (N
om
odel.nited States Patent Office. other words, 55
may pass the alternating current from the
source through one energizing circuit, and in
duce such current second current the
other energizing circuit. 63
In application filed May 15, 1888,
Serial No.
S . The
degree retardation may readily secured
by these means which will produce the dif
ference electrical phase between the two 100
currents necessary for the practical operation
of the motor
