The
relative degrees retardation the phases
of the current the two motor circuits with
respect those the unretarded current in
the circuit thus produced, will set aro-
35 tation the motor which may practically
utilized for many purposes. the two energizing circuits the
motor are shown connected multiple arc
2o the circuit and one these circuits
is resistance Assuming the two motor
circuits have the same self induction and
resistance rotary effect will produced
by the passage through them alternating
25 current from the source But one the
motor circuits, varied modified by
the introduction dead resistance the
self-induction that circuit branch re
duced, and the phases current therein re-
30 tarded correspondingly less extent. The method operating motors having
independentenergizing circuits, herein set 75
forth, which consists directing alternat
ing current from single source through both
circuits the motor and varying modify
ing the relative resistanceor self-induction of
the motor circuits and thereby producing 80
the currents differences phase, set forth. except that a
self-induction coil asS introduced into one
40 branch energizing circuit the motor.
I not claim this application the spe
cific devices employed carrying out
the invention, having made these the sub
jects other applications. 65
What claim herein is—
1. the arrangement the parts is
similar that shown Fig.W
hected the secondary circuit elec
trical transformer induction coil The
primary coil this transformer, included
in the circuit The alternations current
5 the circuit tend establish their pas
sage through the coils polarity right
angles that set the coils and if
the currents the two sets coils accorded
in their phases, rotary effect would pro-
10 duced. But the secondary current developed
in the coil the transformer, will lag be
hind that the primary which lag re
tardation may increased have shown
in another application, sufficient extent
15 practically obtain the same result though
two independent alternating currents were
used energize the motor. The method operating motors having
independent energizing circuits, herein set
forth, which consists passing alternating
currents through both the said circuits and 70
retarding the phases the current one
circuit greater less extent than the
other.
The effect thus increasing the self-induc
tion one the circuits retard the
phases the current passing therein a
greater extent than the other circuit, and
in this way secure the necessary difference 45
in phase between the two energizing currents
to produce the rotation the motor.
In Fig.
In Fig.
Witnesses:
Frank Hartley,
Frank Murphy.
2.
In the above description have referred 55
mainly motors with two energizing circuits,
but evident that the invention applies
equally those which there are morethan
two such circuits, the adaptation the
same being matter well understood those 6c
skilled the art.
NIKOLA TESLA.
.
In application filed, even date here
with, have shown and described other ways
of accomplishing this result, among which 50
may noted the introduction resistance
capable variation each motor circuit, or
the use resistance one circuit and a
self-induction coil the other
