The combination, with alternating-
15 current synchronizing motor having one en
ergizing-field, alternating-currenttorque
motor having plurality energizing-cir
cuits and adapted operatedby currents
differing phase, and switch for directing
so the alternating current currents through
the several circuits one motor orthe single
circuit the other, and for the purpose
set forth. The combination, with alternating-
current motor composed multipolar al
ternating field-magnet, and armature hav
ing poles wound with coils closed upon them- 35
selves, starting device, set forth. 45
7.
4.
2.459,772 3
its actuating-current, and switch mechanism
for directing the current through either or
both the motors, set forth. The combination two motors the ar-
5 matures which are mounted upon the same
shaft, one said motors being alternating-
current torque motor, one which the
magnetic points poles are progressively
shifted the action the energizing-cur
io rent, the other motor being alternating-
currentsynchronizingmotor,andswitchmech
anism for directing the current through either
or both said motors, set forth.
5.
NIKOLA TESLA.
6.
"Witnesses:
George Monro,
Edw ard Evans.
. The combination, with alternating-
25 current motor having field-cores wound with
coils adapted connected source of
alternating currents and armature wound
with induced coils closed upon themselves, of
a starting device for bringing said motor into
synchronism with the generator -with -which 30
it connected.
3. The herein-described method operat
ing alternating-current motors, which consists
in actuating motor alternating cur
rent bring second alternating -current
motor synchronizing speed relative 50
the actuating-current and then switching the
synchronizing motor into circuit. alternating-current motor, the com
bination field-magnet having poles wound
with coils adapted when connected with a
source alternating current produce si- 40
multaneously opposite magnetic polarities
and armature provided with poles pro
jections and wound with coils connected in
a continuously-closed unconnected circuit, as
set forth
