E are two other magnetizing coils wound
midway between coils but having a
stronger magnetizing influence for current
of given strength than coils D. object con-
55 structing the motor this way effect
more perfectly shifting the points of
maximum magnetic effect.
’ NIKOLA TESLA.
I would state that using the word gen
erator, mean either primary generator, 85
such magneto machine, secondary
generator, such electrical converter,
and claiming protection for inducing the
current one set energizing coils the
current which circulates another, would 90
be understood including the induction of
the secondary current from the current from
the same source that which traverses the
motor coils whether flowing the same
branch part the circuit not. This method
or mode producing the currents the in- 75
dependent energizing circuits the motor
may carried out various ways, and is
not material the invention broadly con
sidered, what devices employed effect
ing the result, viz: the induction from orby the 80
current from the generator source, the
current currents which co-operate there
with producing the rotation the motor.
. annular field
*0 magnet having three pairs oppositely lo
cated sets polar projections Upon
one paiir these projections, the main
energizing coils are wound. diagram modified
form motor. For assumingthe
operation,of the motor due the action
above set forth—the first effect current
impulse this motor will magnetize 60
the pole pieces but the current thereby
induced coils magnetizes the pole pieces
L and the current induced turn coils E'
magnetizes the pole pieces The polepieces
are not magnetized, least their full ex- 65
tent, simultaneously this means, but there
is enough retardation delay produce
a rotary effect influence upon the arma
ture.
The armature may any the forms
30 used alternating current system
and shown wound with two closed coils
G right angles each other. The method operating electro-mag
netic motors having independent energizing 105
circuits herein described, which consists in
developing alternating current one of
said energizing circuits and inducing there
by currents the other energizing circuit or
circuits, herein set forth.
2o are the secondary coils which are asso
ciated with the main coils They are in
circuits which’include the coils respect
ively, the connections béing made such
order that currents induced coils and
25 circulating coils will act opposition to
those coils far only the location
of the magnetic poles the ring con
cerned.511,915
la the drawings annexed have shown in
Figure alternating currentgenerator con
nected with motor, shown diagrammatically
and constructed accordance with in-
5 vention, and Fig. Over these
are wound the secondary coils the
45 next polar projections are wound the sec
ond energizing coils which are circuit
with coils Tertiary induced coils are
then wound over the coils and the re
maining polar projections the third ener-
50 gizing coils are wound and connected up
in the circuit the tertiary coils E'. 1farther,
thereby obtaininga stronger and better rotary
effect.
D are two main coils wound opposite
sides the ring oi- annular field and con
nected with the line, and having tend
ency magnetize the ring with opposite
iS poles midway between the two coils. The
cylindrical disk armature core this
motor has polar projections wound with coils
0 forming closed circuits.
Referring Fig. The application this principle not
limited the special forms motor herein 70
shown, any the double circuit alternat
ing current motors invented and de
scribed former Letters Patent may
beadapted tothe samepurpose. 95
What claim is—
1.
Witnesses:
Geo.
A designates any ordinary form alter
nating current generator and the line
wires for connectingthe same with the motor,
io the annular field magnet the motor. Monro,
Edward vans. The method operating electro-mag
netic motors having independent energizing
circuits, herein described, which consists
in passing alternating current through one rco
of the energizing circuits and inducing by
such current the current the other ener
gizing circuit the motor, set forth.
2.
In order prolong the magnetizing effect
of the induced currents producing shift-
35 ing the poles, have carried the principle
of the construction exhibited Fig
