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Патент USA US2115570

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April 26, 1938.
F. A. COMPTON, JR
ME
'
2,115,570
THOD OF WINDING DYNAMO-ELECTRIC MACHINES
Filed Sept. 29, 1937
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2,115,570
Patented Apr. 26, 1938
UNITED STATES PATENT OFFICE
2,115,570
METHOD OF WINDING DYNAMO-ELEC'I‘RIC
MACHINE-S
Frank A. Compton, Jr., Wesleyville, Pa., assignor
to General Electric Company, a corporation
of New York
Application September 29, 1937, Serial No. 166,293
6 Claims.
(Cl. 171-206)
My invention relates to dynamo-electric ma
chines and more particularly to a method of
winding the magnetic core structures thereof.
The core structure of a dynamo-electric ma
chine is frequently provided with winding slots
which are disposed below the outer surface of the
core and restricted openings between the wind
ing slots and the outer surface of the core. Dif
?culty has been encountered in winding core
structures having winding slots of this character
1
due to the fact that the cross-sections of the
coils of the winding are usually wider than the
restricted slot openings through which the coils
must be inserted.
It is an object of my invention to provide an
15 improved and simpli?ed method of winding core
structures having winding slots of the type de
scribed and utilizing similarly formed coils.
Further objects and advantages of my inven
tion will become apparent as the following de
20 scription proceeds, and the features of novelty
which characterize my invention will be pointed
out with particularity in the claims annexed to
and forming a part of this speci?cation.
For a better understanding of my invention
25 reference may be had to the accompanying
drawing in which Fig. l is a fragmentary end
elevation, partly in section, of a dynamo-electric
machine provided with a ‘core structure which has
been wound in accordance with the method of
30 my invention; Fig. 2 is a reduced side elevational
view, partly in section, of the core structure of
the dynamo-electric machine of Fig. 1, showing
3
an initial step of the method of winding the
same; and Fig. 3 is a view of the core structure
of the dynamo-electric machine similar to that
of Fig. 2, showing a subsequent step of the method
of winding the same.
Referring to the drawing, in Fig. 1 I have
shown a dynamo-electric machine I0 including
40 a stationary member having a magnetic core
structure II which is preferably of the laminated
type. The core II is provided with a plurality
of teeth I2 disposed about the inner circum
ference thereof and forming spaced~apart wind
4
ing slots in which suitable ?eld exciting windings
I3 are arranged. The dynamo-electric machine
III also includes an armature having a magnetic
core structure I4 of cylindrical con?guration
which is preferably of the laminated type. The
5O
core I4 is provided with a winding I5 fully dis
tributed over the outer surface thereof and is
securely mounted upon a rotatable shaft I6 in
any suitable manner.
55
The core I4 is also pro
vided with a plurality of spaced-apart teeth I1
forming a plurality of spaced-apart winding slots
I8 extending longitudinally of the core and dis
posed adjacent the outer surface thereof. The
teeth I"! are provided with circumferentially ex
tending tips I'Ia which partially close the wind
ing slots I8 and form restricted openings be
tween the winding slots and the outer surface of
the core I4. The winding I5 comprises a plu
rality of similarly formed coils I9 which are con
nected in circuit relationship by a plurality of
10
riser connectors 20 to a commutator 2I carried
by the shaft I6.
-
As best shown in Figs. 2 and 3, each of the coils
I9 comprises a bundle of turns of insulated con
ductor and has a cross-section which is wider 15
than the restricted openings between the wind
ing slots I8 and the outer surface of the core I4.
A portion I9a of the coil I9 is tightly wrapped
with strip insulating material to form an enclos
ing casing 22 thereabout leaving a portion I9b
of the coil exposed. The enclosed portion I9a
of the coil I9 has a width which will not allow
the same to be inserted into a winding slot I8 in
the core I4 through its restricted opening. On
the other hand, the cross-section of the exposed
portion [9b of the coil I9 may be deformed or
flattened by spreading the turns apart. The ex
posed portion I9b of the coil I9 may then be in—
serted into a winding slot I8 in the core I4
through its restricted opening.
An insulating liner 23 is arranged in each of
the winding slots I8 in the core I4 in order to
prevent direct contact between the winding I5
and the laminated core. The enclosed portion
I9a of each of the coils I9 is arranged in the
bottom of a corresponding one of the winding
slots I8 and the exposed portion I9b thereof is
arranged in the top of a corresponding one of
the winding slots I8, the second-mentioned wind
ing slots being displaced from the ?rst-mentioned
winding slots by the pitch of a coil I9. A layer
of insulating material 24 is arranged in each of
the winding slots I8 and is interposed between
the enclosed portion I9a of one of the coils I9
therein and the exposed portion I9b of another of 45
the coils I9 therein. The adjacent upper edges
of each of the insulating liners 23 are bent to
ward each other and an insulating strip 25 is
placed in each of the winding slots I8 over the
adjacent edges of the insulating liner 23 and the 50
exposed portion 19b of the coil I9 therein in order
to wedge securely the portions of the coils in place
and to retain the Winding I5 in position.
In winding the core M of the dynamo-electric
machine I0 a plurality of the coils I9 are formed, 55
2,115,570
each coil comprising a bundle of turns of in
sulated conductor and having a cross-section
wider than the restricted opening between a
winding slot I8 in the core I4 and the outer sur
face thereof. The portion l9a of each of the
coils I9 is tightly wrapped with strip insulating
material to form the enclosing casing 22 there
for, leaving the portion Nb of the coil exposed.
The insulating liners 23 are then placed in the
winding slots [8 in the core M. The cross-sec
tion of the exposed portion I9b of one of the
which includes forming a coil having a cross
section wider than the restricted openings of the
winding slots and comprising a bundle of turns,
enclosing a portion of said coil in a casing leaving
another portion thereof exposed whereby the
cross-section of said exposed portion of said coil
may be deformed and the turns thereof inserted
into a winding slot through its restricted opening,
inserting said exposed portion of said coil into 10
one of the winding slots through its restricted
coils I9 is deformed by spreading the turns apart
opening, shifting said coil to bring said enclosed
and inserted into one of the winding slots H3’ in
the core I4 through its restricted opening as
shown in Fig. 2. The coil I9‘ is then shifted to
bring the enclosed portion l9a thereof into po
sition in the winding slot as shown in Fig. 3,
portion thereof into said one winding slot, rotat
ing said coil to bring said exposed portion thereof
into alignment with another of the winding slots, 15
inserting said exposed portion of said coil into
said second-mentioned winding slot through its
restricted opening, and securing said coil in place
in said winding slots.
the coil [9 being sufficiently deformable to allow
the same to be shifted in the winding slot IS.
A coil I9 is formed for each of the winding slots
I8" and'iplaced therein'in a similar manner. The
enclosed portions l9a ofv the coils- I79v are then
arranged in the bottoms’ of the Winding slots
l8a~ and the exposed portions’ l9b thereof are
arranged inspaced relation to the core M. The
layer of insulating material 24 is placed in each
of the‘ winding slots l8‘ over the enclosed por
tion‘ We of the coil l9 therein. Each of the coils
30.
winding slots provided with restricted openings
is then rotated to-bring the exposed portion l9?)
thereof‘ into alignment with another of the Wind
ing slots 18 disposed a coil pitch from the wind
ing slot in which the enclosed portion |9a there
of'isarranged. The cross-section of the exposed
portion Nb of each of the coils i9 is deformed
: or ?attenedby spreading the turns apart and in
serted into the‘winding slot in alignment there
with through its restricted opening. The adja
cent edges of each- of the insulating liners 23 are
bent toward-each other and the insulating strips
40 25-are inserted into the winding slots l8 over the
adjacent edges of the insulating liners 23 and
the exposed portions Nb of the coils I9 in order
to wedge securely the portions of the coils H9
in place in each of the winding slots 18 and to
45 retainithe winding 15 in place.
3. The method of winding a magnetic core
structure having a plurality of spaced-apart
winding slots provided with restricted openings
which includes forming a coil having a cross-v
section wider than the restricted openings of the
winding slots and comprising a bundle of turns,
enclosing a portion of said coil in a casing‘ leav
ing another portion thereof exposed’ whereby the
turns of said exposed portion of said coil may be
spread apart and inserted into a winding slot
through its’ restricted opening, spreading the
turns» of said exposed portion of said coil and
inserting the same into one of the winding slots
through its restricted opening, shifting said coil
to bring said enclosed portion thereof into said
one winding slot, spreading the turnsof said ex~
posed portion of said coil and inserting the same
into another of the winding slots through its re
stricted opening, and securing said coil in place
in said Winding slots.
4. The method of winding a magnetic core
structure having a plurality of spaced-apart
winding slots provided with restricted openings
which includes forming a coil having a cross-sec
tion wider than the restricted openings of the
winding slots and comprising a bundle of. turns
While I have shown and described my inven
of insulated conductor, wrapping strip insulat
tion as applied to the winding of core structures ing material about a portion of said coil to en
of- dynamo-electric machines, I do not desire my close the same leaving another portion. thereof
invention to be limited to the particular method exposed whereby the cross-section of said ex
50. described, and I intend in- the appended claims
posed portion of said coil may be deformed and ,
to cover all modi?cations within the spirit and the turns thereof inserted into a winding slot
scope of my invention.
through its restricted opening, inserting said
What I claim as new and desire to-secure by
exposed portion of said coil into one of the wind
LettersPat'ent' of theUnited States is:
- ing slots through its restricted opening, shifting
1‘. The method of winding a' magnetic core said coil to bring said enclosed portion thereof
structure having a plurality of spaced-apart into said one winding slot, inserting said ex~v
winding‘ slots provided with restricted openings posed portion of, said coil into another of the
which includes forming a coil having a cross-see
tion wider than therestricted openings of the
winding slots and comprising a bundle of turns,
enclosing a portion of said- coil‘in a casing leav
ing another portion thereof exposed whereby the
cross-section of said exposed‘portion of said coil
may be deiormedand the turns thereof inserted
‘into a winding slot through its restricted open
winding slots through its restricted opening, and
securing said coil in place in said winding slots.
5. The method of winding a magnetic core‘
structure having a plurality of spaced-apart‘
winding slots provided with restricted openings
which includes forming a coil having a cross
ing, inserting said exposed portion of said coil
section wider than the restricted openings of‘ the
winding slots and comprising a bundle of turns,
enclosing a portion of said coil in a’ casing leaving
into one of the Winding slots through its re
another portion thereof exposed whereby the
stricted opening, shifting said coil to bring said
enclosed portion thereof into said‘ one winding
'slot, inserting said exposed portion of said coil
into another of the winding slots through its re
stricted opening, and? securing said coil in place
in said winding slots.
2. The method of winding a‘ magnetic core
75:‘ structure having a plurality of spaced-apart
cross-section of said exposed portion of said. coil
may be deformed and the turns thereof inserted
into a winding slot through its restricted open
ing, inserting said exposed portion of said coil
into one of the winding slots through its- re
stricted‘ opening, shifting said coil to bring said
enclosed portion thereof into said one winding
slot, placing a portion of another coil in the
2,115,570
bottom of another of the windings slots, placing a
layer of insulating material in said second-men
tioned winding slot over the portion of said sec
ond~mentioned coil therein, rotating said first
mentioned coil to bring said exposed portion
in thereof into alignment with said second-men
tioned winding slot, inserting said exposed por
tion of said ?rst-mentioned coil into said sec
ond-mentioned winding slot through its restricted
opening, and inserting an insulating strip into
10 said second-mentioned winding slots over said ex
posed portion of said ?rst-mentioned coil to re
tain said coils in place.
6. The method of winding the core of a dyna
mo-electric machine having a plurality of
3
turns thereof inserted into a winding slot through
its restricted opening, placing an insulating liner
in one of the winding slots, inserting said ex~
posed portion of said coil into said one winding
slot through its restricted opening, shifting said
coil to bring said enclosed portion thereof into
said one winding slot, placing an insulating liner
in another of the winding slots, placing a portion
of another coil in the bottom of said second
mentioned winding slot, placing a layer of in 10
sulating material in said second-mentioned wind
ing slot over the portion of said second-mentioned
coil therein, rotating said ?rst-mentioned coil to
bring said exposed portion thereof into align
bundle of turns, enclosing a portion of said coil
ment with said second-mentioned winding slot,
inserting said exposed portion of said ?rst-men
tioned coil into said second-mentioned winding
slot through its restricted opening, and insert-'
ing an insulating strip into said second-men
tioned winding slots over said exposed portion of 20
posed whereby the cross-section of said exposed
place.
spaced-apart winding slots provided with re—
stricted openings which includes forming a coil
having a cross-section wider than the restricted
openings of the winding slots and comprising a
20 in a casing leaving another portion thereof ex
portion oi said coil may be deformed and the
said ?rst~mentioned coil to retain said coils in
FRANK A. GOMPTON, JR,
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