Yo.
annular core wound with four diametrically-
oppositecoils, EE'.
The cylindrical armature the motor is
wound with two coils, right angles, which
form independent closed circuits. com
mon return-wire brusli o'.
These energizing-coilsarcswound ring or
annular field pole-pieces thereon, and
produce the action the alternating cur
rents passing through them progressive 75
shifting the magnetism from pole pole.
SPECIFICATION forming part oflietteni Patent No. Withintheringismonnted
a cylindrical armature-core wound longitudi
nally with two independent coils, F', the 60
ends which lead, respectively, totwopairsof
insnlated contact orcollectingrings, D'GG',
on the armature-shaft.
Application fllad April 88,188a.very high speeds, how
ever, particularly the case large genera
tors, limited mechanical conditions, in
seekingtoavoid which have devised various
plans for operating the system uuder efficient
40 conditions, although running the generatorat
a comparatively low rate speed. the main line there
may included one more motorsor trans
formers, both. motorsbe used, they are
constructed accordance with invention
with independent coils sets coils J', in- 70
eluded, respectively, the circuits M'. Collecting-brushes d
8 bear, upon these rings, respectively, and
convey theenrrents throughthetwo independ- 65
ent line-circuits MM'.BESTAVAILABLECOP'
United States Patent Office.
30 secure the greatest efficiency, neces
sary rnn the machines high speed, and
this trne not only those generators and
motors which are particularly adapted for nse
in systein, but others.
45 According the invention, lien driving
the armature the generator high rate
of speed, produce rotation the magnetic
poles oneclement thegeneratorand drive
the other different speed, which simi-
50 lar results are obtained those secured a
rapid rotation one tbo elements. Serisl No. One end each these coils
is connectedto the collecting-ringsbe, respect
ively,while the other ends are both connected 95
to ring, Collecting-brushes^&
' bear on
the rings respectively, and conductors L
L convey the currents therefrom through tho
coils and the generator.
' present invention consists another
way accomplishing this result, which in
certain respects presents many advantages.)
To all whom concern*
Be known that Nikola Tesla, sub
ject the Emperor of'Austria, from Smiljan,
Lika, bordercountryofAustria-Hungary, now
5 residingatNeW. The secondary coils may then be
utilized for running groups incandescent 85
lamps . said,Bystem, have heretofore
shown, leiuployed ageneratór alternating
currents which there were indépendént in
duced orgeneratingcoils correspondingto the
25 energizing-coils the converter, and the re
lations the generator and converters were
generally snch that the speed rotation of
the magnetic poles the converter equaled
that the armatnre the generator.
The generator which supplies the current
for operating the motors transformers cod- 55
sists this instance subdivided ring or. ‘
My present invention relates, chiefly, the
alternating-current Bystem invented me
and’described prior patents, notabíy Nos. 390,721, dated October 9,1888.
This consists two poles, steel per
manently magnetized, iron excited a
battery other generator continuous cur- 90:
rents,audacylindricalarmature-core mounted
on shaft, aud wound with two longitudi
nal coils,CC. Two independ- too
ent circuits are thus formed, one including
coils Oof the exciter and the generator,
.
With the generator employ exciter.
DYNAMO-ELECTRIC MACHINE.
to the diagram drawing hereto annexed.'
381,968 and 382,280, May 1888, which
15 the motors transformers, generally the
converters, areoperated bya progressiveshift
ing movement their magnetic poles pro
duced the co-operative action independ
ent magnetizing-coils through which pass al-
20 ternating currents proper order and direc
tion. The practica-
35 bility running .
NIKOLA TESLA, NEW YORK, Y. 279,153.
If transformers employed, connect oné 80
set the primary coils, wound a
ring annular core, one circuit, M', and
the other primary-coils, N', the cironit
M.rk, the county and State
of New York, have invented certain new ahd
nsofulImprovements ElectricGenerators, of
whichthe followingis aspecification, reference
being had the drawing accompanying and
io forming part the same., ASSIGNOR THE TESLA ELECTRIC
COMPANY, SAME PLACE. (Ho model.
I shall describe this invention reference
