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Патент USA US2404246

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July 16, 1946.
E. N. QLsQN
2,4@4,246
BRUSH RIGGING
Filed Dec. 24, 19,43
Fig.1. '
Inventor: /
Edwin N. Olson,
'11 ydajwzaw ‘
I
His Attor‘n ey.
Patented July 16, 1946
2,404,246
‘UNITED STATES PATENT OFFICE
2,404,246
:
BRUSH RIGGING
Edwin N. Olson, Schenectady, N. Y., assignor to
General ‘Electric Company, a corporation of
New York
Application December 24, 1943, Serial No. 515,469
’
9 Claims.
(01. 171-324)
1
2
My invention relates to a brush rigging and
particularly to an arrangement for movably sup
are slidably arranged for supporting and guiding
the spring and brush elements. This mounting
porting brushes to permit ‘them to follow the
An object of my invention is to provide an im
proved brush rigging for a rotatable current col
bracket 20 is secured by a screw 2| to a mounting
stud 22 supported by a boss 23 formed on an end
shield 24 of the dynamoelectric machine. In
order to assure good electrical contact between
the brushes [3 and the mounting bracket 20
lector.
which is made of electrically conductive material,
.
v
contours of a current collector such as a Slip ring
under severe conditions of vibration.
'
Another object of my invention is 'to provide
an electrical conductor 25 is connected at 26 to
an improved brush rigging "in which a pair of 10 the bracket 20 and is also electrically connected
brushes is slidably supported and biased towards
each other into engagement with a current col
to the U-shaped mounting member [4. With
this arrangement, the mounting bracket is rigidly
secured to the stationary member of the dyna
Further objects and advantages of my inven
moelectric machine, and the brush elements l3,
tion will become apparent and my invention will 15 together witlrthe supporting and biasing spring
members 14 and I6, are slidably supported and
bebetter understood from the following descrip
' tion referring to the accompanying drawing, and
guided on the ?ngers !9 of the mounting bracket
the‘ features of» novelty which characterize my
20, so that the brush elements are free to follow
invention will be pointed out with particularity
any movements of the current collector l2 rela
in the claims annexed to and forming part of 20 tiVe to the stationary mounting bracket 2!] and
this speci?cation.
the stationary member of the machine. It has
been found that this construction minimizes
‘In the drawing, Fig. 1 is a side elevational view,
partly broken away, of a dynamoelectric machine
opening of the circuit between the brush ele
provided with an embodiment of my improved
ments and the current collector and provides
brush rigging; and Fig. 2 is a'perspective view of 25 sparkless current collection, even under extreme
the brush rigging shown in Fig. 1.
ly adverse vibration conditions.
Referring to the drawing, I have shown a dy
While I have illustrated and described a par
namoelectric machine provided with a stationary
ticular embodiment of my invention, modi?ca
lector.
>
'
-
member Ill and a rotatable member mounted on
tions thereof will occur to those skilled in the
a shaft ll within the stationary member Ill and
art. I desire it to be understood, therefore, that
provided with a current collector including a slip
ring l2 mounted on the shaft ll. Electrical con
my invention is not to be limited to the particular ‘
ments l3 which are mounted on a substantially
arrangement disclosed, and I intend in the ap
pended claims to cover all modi?cations which
do not depart from the spirit and scope of my
invention.
U-shaped brush mounting element [4 formed of a
leaf spring, 'The mounting element I4 is pro
Letters Patent of the United States is:
tact is adapted to be ‘formed with the rotatable
current collector l2 through a pair of brush ele
What I claim as new and desire to secure by
1. A brush rigging adapted to contact a rotat
vided with a pair of legs l5 adjacent the outer
able current collector including a U-shaped spring
ends of which the brush elements 13 are secured,
and these legs are formed, as shown in Fig. 2, 40 brush-mounting element having a contact brush
element supported on each leg of said mounting
such that the space between the brush elements
element adjacent the ends thereof, openings
I3 is less than the diameter of the current col
lector I2. These brush elements 13 are adapted
through the legs of said U-shaped spring element,
to be ?tted in contact with the current collector
and means including a supporting bracket mem
by spreading apart the two legs l5 and are 45 ber having inwardly extending ?ngers slidably
biased towards each other and into engagement
arranged through said openings in said legs of
with the current collector by a second U-shaped
said U-shaped spring element for supporting and
spring member I6 which extends over the outside
guiding said spring and brush elements.
of the U-shaped spring mounting member I4
2. A brush rigging adapted to contact a rotat
with the ends of the spring [6 bent inwardly 50 able current collector including a brush-mount
into engagement with the outer sides of the legs
ing element with a pair of legs having a contact
15. The adjacent legs of the U-shaped spring
brush element supported on each leg, means in
members I4 and I6 are formed with aligned
cluding a spring element for biasing said contact
openings 11 and I8 through which inwardly ex
brush elements toward each other, openings
tending ?ngers I 9 of a supporting bracket 20 55 through the legs of said mounting element, and
2,404,246
3
4
means including a supporting bracket member
'7. A brush rigging adapted to contact a rotat
able current collector for electrical equipment in.
cluding a U-shaped spring brush-mounting ele
ment having a contact brush element supported
on each leg of said mounting element adjacent
the ends thereof, said legs of said U~shaped spring
mounting element being formed with a space be
tween said brush elements of les‘sthan the diam
eter of said current collector and being adapted
to be spread apart and ?tted with said brush ele
ments in contact with said current collector,
having inwardly extending ?ngers arranged
through said openings in said legs of said mount
ing element for supporting said brush elements.
3. A brush rigging adapted to contact a rotat
able current collector including a brush-mount
ing element with a pair of legs having a contact
brush element supported on each leg, means in
cluding a ‘spring element for biasing said contact
brush elements toward each other, openings
through the legs of said mounting element, and
means including a supporting bracket member
having ?ngers arranged through said openings
in said legs of said mounting element for slidably
supporting said brush elements.
7
I openings through the legs of said U-shaped spring
element, and'means including a supporting brack
et member having ?ngers arranged through said
15 openings in said legs of said U-shaped spring ele
ment for supporting and guiding said brush ele
4. A brush rigging adapted to contact a rotat
ment.
able current collector including a brush-mounting
8. A brush rigging adapted to contact a rotat
element with a pair of legs having a contact brush
able current collector for‘electrical equipment in
element supported on each leg, said legs being
formed with a space between said brush elements 20 cluding, a U-shaped brush-mounting element
having a contact brush element supported on
of less than the diameter of. said current col
each leg of said mounting element adjacent the
lector and being adapted to be spread apart and
ends thereof, means including a U -shaped spring
?tted with said brush elements in contact with
element arranged with the ends in engagement
said current collector, means including a spring
element for biasing said contact brush elements 25 with the outer sides ‘of the legs of said U-shaped
mounting element for biasing said contact .brush
toward each other, openings through the legs
elements toward each other, aligned openings
through the adjacent legs of both of said U
supporting bracket member having ?ngers slid
shaped elements, and means including a sup
ably arranged through said openings in said legs
for supporting and guiding said brush elements. 30 porting bracket member having inwardly extend
of said mounting element, means including a
ing ?ngers slidably arranged through said open
5. A brush rigging adapted to contact a rotat~
ings in said legsof both of said U-shaped spring
able current collector including a spring brnslp
elements for slidably supporting said spring and
mounting element with a pair of legs having a
brush elements. _
v
1
contact brush element supported on each leg.
9. A brush rigging adapted to contact a rotat
said legs being formed with a space between said 35
able current collector for electrical equipment
brush elements of less than the diameter of said
including a U-shaped spring brush-[mounting ele-,
ment having a contact brush element supported
on each leg of said mounting element adjacent
contact with said current collector, means for
biasing said contact brush elements toward each 40 the ends thereof, said legs of said U-shaped spring
current collector and being adapted to be spread
apart and ?tted with said brush elements in
other, openings through the legs of said mount
ing element, and means including a supporting
bracket member having ?ngers slidably arranged
through said openings in said legs for supporting
and guiding said brush elements.
mounting element being formed with a space be
tween said brush elements of less than the diam
eter of said current-collector and being adapted
to be spread apart and ?tted with said/‘brush
. elements in contact withisaid current collector,
6. A brush rigging adapted to contact a rotat
able current collector for electrical equipment
including a ueshaped spring brush-mounting ele
ment having a contact brush element supported
on each leg of said mounting element, said legs 50
of said U-shaped spring mounting element being
formed with a space between said brush elements
of less than the diameter of said current collec
tor, openings through the legs of said U-shaped
spring element, means including a supporting 55
bracket member having ?ngers slidably‘arranged
means including a second _U-shaped spring ele
ment/arranged with the ends in engagement with
the outer sides of the legs of said U-shaped
mounting element Vfor‘bias‘ing said contact brush
elements toward each other” aligned {openings
through theadiacentlegs of , bo'tnyof said-‘U
shasee spring elements, a . supporting more
member having inwardly extending ?ngers slid
ably arranged through said openings said legs
ofmboth ofwsaid U7shaped spring elements for
supporting and guiding said spring and brush ele
through said openings in said legs of said U
nients,__and a" current conductor connected to said
shaped spring element for supporting and guid
bracket and to said U —sliaped brush mounting ele
ing said brush elements, and a’ current conductor
connected to said bracket and to said U-shaped 60
EDWIN N. oLsoN.
ment.
brush mounting element.
,
.
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