- NIKOLA TESLA.
Witnesses:
Geo.
. and include the dead resistance and
self-induction coil either circuit, use
only dead resistance self-induction
coil, the various ways shown ap-
30 plication, No. The method operating- electro-mag
netic motor herein described, which consists
in starting the motor passing alternating-
currents differing phase through independ- 80
ent. The method operating electro-mag- 70
netic motor herein described, which consists
in passing through independent energizing-
circuits the motor alternating currents dif
fering phase and then, when the motor has
attained given speed, alternating currents 75
coinciding phase, described.
I not claim herein itself the method
of apparatus for operating motor which
forms part this invention and which in
volves the principle varying modifying 55
the currents passing through the energizing-
circuits, produce between such cur
rents difference phase, these matters
are described and claimed other ap
plications, but witli the object securing, 60
broadly, the method -whole which have
herein set forth. The
motor then runs synchronizing-motor.
3. The method operating alternating-
current motor herein described first pro- 65
gressively shifting- rotating- its poles or
points greatest attraction and then, when
the motor has attained given speed, alter
nating the said poles, described.
I may also use any form switch, whether
manual automatic, that will its manipu
lation operation effect the required change
of connections, and order secure the
35 necessary difference phase the two mo
tor-circuits starting may employ any of
the known means for tins purpose. Lemon. Monro,
Wm.
2. 203,052, filed December 1888.
4.401,520
ing, may started the above-described
apparatus closing the ground-connection
from both generator and motor.
What claim is—
1. The method operating synchroniz- S5
ing-motor, which consists passing alter
nating current through independent energiz
ing-circuits the motor and introducing into
such circuits resistance and self-induction
coil, whereby difference phase between 90
the currents the circuits will obtained,
and then, when the speed the motor synch
ronizes with that the generator, with
drawing the resistance and self-induction
coil, set forth. The system
thus becomes one with two-circuit genera-
5 tor and motor, the ground forming common
return for the currents the two circuits L
and I/.
I believe that the first operate elec
tro-magnetic motors alternating currents
40 any the ways herein suggested de
scribed—that say, producing pro
gressive movement rotation their poles
or points greatest magnetic attraction by
the alternating currents until they have
45 reached given speed, and then the same j
currents producing simple alternation I
their poles, or, other words, change in
the order character the circuit-connec
tions convert motor operating one
50 principle one operating another, for the
purpose (1escribed.
20 describing invention reference to
specific constructions not wish un
derstood limiting myself the construc
tions shown; and explanation in
tent tills respect would say that may in
25 such forms apparatus have shown in
Figs. When this arrangement cir
cuits the motor brought speed, the
ground-connection broken between the mo-
io tor generator, orbotlpand ground, switches
P being employed for this purpose.
In describing those features which consti
tute invention have omitted illustrations
15 the appliances used conjunction with
the electrical devices similar systems—
such, for instance, driving-belts, fixed and-
loose pulleys for the motor, and the like; but
these are matters well understood.energizing-circuits and then, when the mo
tor 1msattained given speed, joining the en
ergizing-circuits series and passing al
ternating- current through the same
