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Патент USA US2404610

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July 23, »1946.
H~ Q_ ABELL
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2,404,610
OIL SEAL
Filed Junè 22, 1944. ~
_ß _ _
INVEN TOR.
BY
Arme/yay
Patented July 23, 1946
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rUNITED > STATES
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_2,404,610
PATENT OFFICE
2,404,610
oIL sEAL
Henry Clark Abell, Interlaken, N. J. v
Application June 22, 1944, seriaiNo. Y541,490
(o1. 286-11)
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This invention relates to new and useful im
provements a seal.
More specifically, the 4invention proposes the
construction of a seal, such as a ball or roller
vbearing' oil or grease seal, for sealing the space
between a shaft and a housing against the loss
of 'lubricant without the sealing taking place at
.
disposed between the shaft and the housing »ad
jacent the seal. The seal and the ball 'bearing
are of the *same outside diameter. The ball
bearing includes an inner raceway I'3 pressed 'on
the shaft I0, a two-part outer raceway I4 pressed
in the housing I'I, the two parts of the race
way III Vbeing secured together by »tap "screws I5,
and balls 4IS disposed between the raceway's.
Ball bearing I2 may mount the housing »on the
either the shaft or the housing.
Still further it is proposed ‘to provide a seal
as aforesaid, having a part adapted to be secured 10 shaft or the shaft in the housing, V‘as desired.
to a shaft, a part adapted to be secured to a
For instance, the shaft I 0 might be the rotatable
housing or the like, and sealing means between
rear axle of an automobile and ïthe housing I'I
the parts.
`
might be the stationary axle .housing ‘of the
'Still> further it is proposed 'to provide a seal
as aforesaid in which the part secured to the 15
The seal, according to this invention, comprises
‘shaft has a circular tongue and groove connec
an oriñced member I'I rigidly secured to the shaft
automobile.
tion with the part secured to the housing.
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I
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I0 by being pressed thereon. 'Member Il'IA has
Still further it is proposed >to provide a seal
a center radial tongue I8, a shoulder rI'l9 at 'each
as' aforesaid provided withsealing' material in
side of the'tongue, each shoulder VI9 being iin
engagement with the sides >and edge of the cir 20 clined outwardly from the tongue, and a :shoulder
culartongue.
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20 at the outer side of each shoulder ‘I9. Mem
For further 'comprehension‘lof the invention,
ber I‘I is'circular and consequently the >tongue
and of the objects and advantages thereof, ref
and shoulders are `circular also. Shoulders 20
erence lwill Abe had to the following descrip
lare of shorter radius than shoulders I9 vand
tion and accompanying drawing, and to the ap 25 shoulders I9 areof shorter radius than tongue
pended claims in which the various novel fea
tures of the invention are more particularly »set
forth.
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VIn the accompanying drawing forming a mate
rial part of this disclosure: `
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lis a section on the line I-I of -F‘ig. 2
A casing 2I is rigidly secured in the housing
I I by being pressed therein. Casing 2‘I has a
circular wall `22, concentric and in engagement
with the inner face of the housing, and an or
ificed wall 23 at right, angles to wall 22 and in
çof a seal constructed in accordance with this
-line with one of the shoulders 20 vwhich is dis
invention, a shaft, a housing and a ball bearing
posed in the oriñce of wall 23 with only working
being vshown in association therewith.
clearance therebetween. Wall 22 at its margin
Fig. 2 is a side elevation of the seal shown
remote from the `wall 23 is provided with an
in Fig. 1, viewed from the right thereof, ”
internal‘groove 24 for a split ring 25 which re-`
Fig. 3 is a sectional view similar to Fig. l of a
tains the following circular and parallel mem
seal constructed in accordance with a modifica
bers: a 'synthetic rubber washer 26 parallel `to
tion -of this invention.
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and in engagement with the wall 23, ~engaging
Fig. 4 is an enlarged >elevational view of a 40 at 'its outer circumference the wall 22 and being
sealing disc of the seal of Fig. i3'.
,
spaced at its inner circumference from the ad
The seal of the »present invention is especially
jacent shoulders I9 and 20; 'a sealing discv 21
adapted for .useA as a ball or roller bearing oil
in engagement with the ‘washer 26 andthe wall
>or grease retainer between a shaft and a hous
and extending radially» inward from the washer
ing, one or both of which may be rotatable, and 45 26 and having a flange -28 extendingvfrom 'its
it will be so treated, for simplicity, in the fol
inner circumference toward tongue I8, which it
lowing description. However, it will be under- ‘
engages with a sliding ñt; a thick felt lubricating
vstood _that the seal has general _application to
washer 29 engaging wall 22 at its outer circum#` '
rotary structures for providing a retainer against
ference, the outer circumference of tongue I8 at f
the leakage of lubricant or other vfluid from a
space betweenrotary parts.
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.
>lfteferring to Fig. 1, it will Abe seen that the
seal of the present invention is disposed between
~a `shaft lûand a housing II, eithermor both of
yits inner circumference, `and disc ‘21 at one of
its sides. The rubber washer 26 acts as a »spring
forcing the disc 21 against the washer 29 and
against the tongue I8. As it >is made of syn-'
thetic rubber, itis not affected by th‘e:„oi«l v’or .
.W'hich‘may be rotatable. A ¿ball bearingis also "55, grease >contained V,in „the 'seal;,_;îanother..1disc .,530
2,404,610
which is similar to disc 21 but has a flange 3l
oppositely disposed from flange 28 so that it ex
tends toward flange 28. Disc 30 engages the
other side of washer 29 and its ñange engages
the tongue I8 with a sliding ñt; a disc plate Ul
pressure spring »32 engaging the disc 30 and .
Ving washer 40 in engagement with the adjacent
side wall of the tongue I8'. Other parts of this
seal corresponding to similar parts of the seal of
Figs. 1 and 2 are indicated by like references with
i
forcing it against the washer 29 and the tongue
I8.` Spring v32 is shaped like a‘washer but has
an outer Yportieri 33 „and an offset inner Portion
34 connected 'by a .reversely curved lportion 35
4
with a groove 39 in which is disposed a felt seal
an accent added.
The operation of this form of device is substan
tially like the operation of the seal shown in
Figs. l and 2, except that the felt washers 38_and '
‘4*ßjfurther prevent passage of ,oil or grease passed
the
which gives it a lateral spring action when it
seal.v
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While I have illustrated and described the pre
is forced against the disc 30.
ferred embodiments of my invention, it is to be
understood that I do not limit myself to the
precise constructions herein disclosed and the
right is reserved to all changes and modifications
l The pressure plate or arwasher 36 is disposed y
between the split ring 25 and the spring 32. The
rubber washer 26 and the spring 32 maintain all
of the parts of the seal in tight pressure ñt. Split
coming within the scope of the invention as de
ring 25 has -a hole 38 adjacent each side of its
split for the insertion of a tool (not shown) to
fined in the appended claims.
Having thus described my invention, what I
Compress the split right for insertion and removal
20 claim as new, and desire to secure by United
from the groove 24.
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States Letters Patentsjis: _
V
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Theoperation of this form of device is as fol;
l. A lubricant seal comprisinga circular mem
ber having a central orifice for’receivingashaft
t The roller bearing is lubricated with oil or
and a radial tongue, a casing havingY a ,central
grease, as desired. For instance, it may be lubri
oriñce in which said member is disposed,.saidicas;
cated'with oil contained in housing II at the side 25 ing being adapted to be secured in a housing, said
>of the .ball-bearingremote from the seal. >The
casing having a circumferential wall concentric
seal ; prevents the oil from'passing out of the
with said member orifice and another wall par
housing I I.V As the ball bearing has parts pressed
allel to and spaced'from said tongue, the outer
lon thev shaft and in the housing, the oil only
circumference of said tongue being‘sp'aced from
passes through the ball bearing between the race 30 said casing circumferential wall, a lubricating
fways. As `casing k2| is pressed in the housing
washer in said spacebetween said tongue yand
and as member _I1 is -pressed on the shaft, the
said casing circumferential wall, said washerfbe
3oil cannot escape between these parts. Oil can
ing wider than said tongue, a sealing discin en
pass between the washer 36 and the adjacent
gagement with each side of said lubricating wash
shoulderfzßdue to the cle-arance therebetween. 35 er and each disc havinga flange` concentric with
¿This oil lubricates thesideof the tongueV I8 en
and engaging the adjacent side of said tongue, an
v1gaged by theiiange 3|. Flange
i, Y 3| prevents any ` elastic resilient and massive rubberY washer' be
Vexcess of oil from passing between it and the
tween said casing other wall and the _adjacent
Jtongue, -' However, it permits enough oil to pass
sealing disc, a plate' lspring ‘engagingjth'e outer
‘therethrough’ to* lubricate- its ~engagement with
face of the other of said sealing discs, and means
lthe, tongueêso‘that the flange does not- weark the
retaining said plate spring, said plate `spring and
,tongue This oilvsoaks into the felt washer 2S
saidÀ rubber washer Yexerting forces urgingl said
lows:
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1which,therefore acts as a lubricant‘reservoir for
Ysealing discs against said lubricating _washer and
îoil, always maintaining a certain amount of oil
said tongue.
for lubricating the parts of the seal rotatably en
' ‘gaging the member I‘I. Some of this oil lubri
`Cates the Yengagement of the flange 28 with the
ïtongue so that wear does notV result.> Flange 23 „
ìprevents. any excessive oilA from passing between
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l it and
the
tongue.
Thus the seal effectively pre-
l
vents any material escape of oil from the housing
`II, _only enough oil being permitted to pass
l throughthe seal to lubricate the seal and be used .
` up therein.
The seal is employed at atmospheric pressure,
`no other pressure being needed to eifectrsealing
l, by any of the parts.,- This `isïan advantage of the
vseal of the present invention.` >It is contemplated
1 that the seal maybe made of various diameters
l corresponding ltostandard- diameters, of ball and
1 roller bearings, so that itïwill fit in the housings
, containing same. >While specific materials have ‘
îfbeen stated, such as the synthetic rubber washer
T26 and the felt 'washer-29,. it will be understood
Vthat this is-'by> way of example ,only and other
1 >_sui-table materials may be employedfif desired.
the modification of theinventionshown in
~ Figs. '3 and 4, zthe construction .of the. seal .is 1
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_y 2. -All‘ibriclant' seal comprising. a member hav
Ying a central oriñce for receivinga shaft and-` a
radial tongue, a casing having a central oriñce
1n which said memberjis disposed, said casing
being adapted to be securedfin-ahousing’said
casing having a circumferential wallY1c’on'c'entricV
With said member oriiice` and another A`wall par
allel to and spaced from said tongue, the outer
circumference of said- tongue beingY spaced from
said casing circumferential walLa felt wasl'ierv in
said space'between and engaging said tongue and
said casing circumferential'wall, a sealing'disc> in
engagement with each'rside ofV said'washe'r _and
With each side of said tongue, an' elastie'massive
rubber washer .between said casing other wall and
the adjacent sealingdisc, 'aplate spring engaging
the outer face yof the other of said sealing discs,
and split rin'gïmeans retaining said plate spring,
said plate spring and said Vrubber- washerexert
l ing' forces urging said sealing-discsr-against said
felt washer and said tongue.
‘
3. ‘A lubricant seal comprising a member having
a centraloriíice for receiving a shaft and a radial
tongue, a casinghaving a central orifice in which
Ísimilar to that previouslydescribed except the
said 'member isrdisposed, said.- casingbeing adapted
shoulders I9’l are. not inclined,'and vdo not extend
-to be'secured in a housing., said casing havin'g‘a
` kbeyond the discs 2l’ and 3G', 'the space between
circumferential wall concentric -with said member
i. the synthetic rubber-washer '26,' -andthe adjf’fi
`« cent shoulder 2ü'iis filled with a felt washerrßß’,
. -oriñce and anotherA wall Yparallel to'andispavced
¿from said tongue, the outer» circumference of said
tongue beingspaced ‘fromsaidbasing circum
"‘the' felt washerZQ’Í'does. .not engage> the tongue
" I8’ andthe flanges 28’ and 3|' areÍprovided-each 75 ferentialwall; a felt lubricating-ïwasher in" said
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2,404,610
space between said tongue and said casing cir
cumferential wall, said Washer being wider than
said tongue and engaging said tongue and said
casing, a sealing disc in engagement with each
side of said lubricating washeneach of said discs
having a iiange concentric with and engaging said
tongue, an elastic resilient and massive synthetic
rubber washer between said casing other wall and
the adjacent sealing disc, a plate spring engaging
the outer face of the other of said sealing discs,
a pressure plate engaging the outer face of said
plate spring, and a split ring- retaining said pres
sure plate said plate spring and said rubber
washer exerting forces urging said sealing discs
against said lubricating washer and said tongue.
4. In combination, a housing, a shaft, anti
friction bearings between said housing and said
shaft, a circular member secured on said shaft
and having a radial tongue, a casing having a
6
tongue, the outer circumference of said tongue
being spaced from said casing circumferential
wall, a lubricating washer disposed in said space
between said tongue and said easing circumfer
ential wall, a sealing disc in engagement with
each side of said lubricating. washer, each of said
discs having a flange concentric with and extend
ing toward said tongue, each of said flanges hav
ing a circular groove, a felt washer in each of
said grooves each in engagement with a side of
said tongue, a resilient rubber washer between
said casing other wall and the adjacent sealing
disc, a plate spring engaging the outer face of
the other of said sealing discs, and means re
taining said plate spring, said plate spring and
said rubber washer exerting forces urging said
sealing discs against said lubricating washer and
said tongue.
6. LA lubricant seal comprising a member having
central orifice in which said member is disposed, 20 a hub provided with a central orifice for receiv
said casing being secured in said housing,_said
ing a shaft or the like and a radial tongue ex
casing having a circumferential wall concentric
tending from said hub, a casing having a cen-v
with said member and another wall parallel to and
tral orifice in which said member is disposed, said
spaced from said tongue, the outer circumference
casing. being adapted to be secured in a housing,
of said tongue being spaced from said casing cir
cumferential wall, a washer between said tongue
- and said casing circumferential wall, a sealing
disc in engagement with each side of said washer
and with each side of said tongue, an elastic re
said casing having a circumferential wall con
centric with said member oriiice and another
. wall parallel to and spaced from said tongue, the
outer circumference of said tongue being spaced
from said casing circumferential wall, a, lubri
silient and massive rubber washer between said 30 cating washer disposed in said space between said '
casing other wall and the adjacent sealing disc, a
tongue and said casing'circumferential wall, a
plate spring engaging the outer face of the other `
sealing disc in engagement with each side of said
of said sealing discs, and means retaining said
lubricating washer and with each side of said
plate spring, said plate spring and said rubber
tongue, a resilient rubber washer between said
washer exerting forces urging said sealing discs 35 casing other wall and the adjacent sealing disc
against said tongue.
,
and spaced from said hub, a felt washer disposed
5. A lubricant seal comprising a member hav
in said space between said rubber washer and
ing a central oriñce for receiving a shaft or the
said hub, a plate spring engaging the outer face
like and a radial tongue, a casing having a cen
of the other of said sealing discs, and means re
tral orifice in which said member is disposed, said 40 taining said plate spring, said plate spring and
casing being adapted to be secured in a housing
said rubber washer exerting forces urging said
or the like, said casing having a circumferential
sealing discs against said lubricating washer and
wall concentric with said member orifice and an
said tongue,
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other wall parallel to and spaced from said
HENRY CLARK ABELL.
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