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Патент USA US2105871

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Jan. 18, 1938'
‘
A. VIGNE
. 2,105,871
OIL AND DUST SEAL FOR JOURNAL BOXES
Filed March 20, 1956
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Patented Jan. 18, 1938
Ni so STATES PATENT, FFiCE
2,105,871
_
on. AND DUST SEAL FOR JOURNAL BOXES
Albert Vigne, Webster Groves, Mo., assignor to
National Bearing Metals Corporation, St. Louis,
Mo, a corporation of New York ,
Application March 20, 1936, Serial No. 69,750
5 Claims.
My invention relates to oil and dust seals for
journal bearings and, in the speci?c form shown,
is particularly adapted for use in connection with
that type of journal box employed in railway
‘
rolling stock, in which type of bearing the axle
has a certain amount of both vertical and hori-
zontal movement relative to the box.
The bearings contained in railway journal
boxes are lubricated by means of waste soaked
(Ci. 286-6)
taken on the line l---! of Figure 2; Figure 2 is
a rear elevation,_ on a reduced scale, the axle
being in section and half of the cover being
broken away; and Figure 3 is a vertical section
taken on the line 3—3 of Figure 2.
_ 5
The journal box 5 differs from the usual box
in having its sealing channel formed by means
of a ?anged cover 6 removably securedlto the
box by bolts 7. This construction permits of
10 oil or free oil carried in the box. A seal and dust ' grinding or, machining the rear face’ 8 of the box 10 '
guard is, therefore, required to prevent contamination of the lubricant by extraneous matter
which would otherwise enter the box, and to prevent" leakage of oil with consequent .failure of
15 proper lubrication and damage to the rolling
to provide a true ?at surface for contact with the
seal unit hereinafter to be described. The axle
9 projects through openings I ii and it in the
rear wall of the box andvthe cover, respectively.
These openings are considerably larger than the 15
axle to permit of the necessary relative movement
stock. Application of an effective oil seal and
dust guard to railway axle boxes is rendered difh- between the box and the axle. An opening 2%
cult because of the necessary relative movement in _the cover serves to drain o?‘ moisture and to
between the axle and the box, considerable verti- relieve pressure between the seal unit and the box.
Seated against the inner face of the cover is
20 cal movement being required to permit the assembly ofjthe grass, wedge, and other component a seal plate it made of some rigid non-abrasive
parts of the bearing, in addition to the neces- metal or compound which will not damage the
Sari! lateral movement.
axle when it comes in contact therewith. The
One object of my invention is to provide a seal ' seal plate is provided with an opening is for
25 on the axle at the back end of ’ the journal box passage of the axle, which opening is preferably
which will ?t tightly on the axle and which has slightly elliptical in form to permit greater hori-
sumcient elasticity to maintain such tight fit and
at the same time permit the necessary movement
of the parts ‘without damage to the seal or imI
1
30 sairment of Its function;
_
.20
‘,5
"
zontal than‘ vertical movement of the axle before
it contacts with the plate. Formed integral with
or secured to the rear face of the seal plate are
I
‘a pair of lugs M which engage with slots IS in 30
_ Another Object of my Invention is to provide a . the 'cover plate, which slots form continuations
Journal box structure including a seal unit movable on the rear surface of the journal1 box and
of the opening H. These lugs prevent rotation
of the seal plate and also prevent any substan
ggcglgglé'zgiggogg fight J°}nt between Said 5111"
tial horizontal movement of the seal plate rela
the box is raised relgtggglzgnfhfsltfnf an? when
tive to the box as they ?t closely againstthe sides 35
tion of replacement of'parts
of the slots. The slots are, however, consider
.
-
.-
ax e or nspec‘
'
1
ably longer than the lugs in order to permit of
A
. further object of my invention is to form the
seal channel of the box by means of a removable
the necessary vertical ' movement when the box
is raised or lowered.
-
40
necessary compression to the Sealing device to -. is a ?exibletosealing sheet l6 made of leather or
hold it ?rmly against the back face of the box‘
A still further object of mymven?on is to
other oilproof materiah Formed in the sealing
sheet is a central opening for the axle, which
opening is of less diameter than the axle so that 45
provide an. elastic or resilient member for pro_
viding the necessary pressure of the sealing unit ' the inner edge of the Sheet may be bent outward‘
against the face of the box, which member is 13’ "00 form a sealing ?ange l1 contacting with
' enclosed and protected by a’ ?exible sheet of the‘periphery of the axle- In Order to hold this
material forming the seal both with the axle and - ?ange ?rmly against the axle and so maintain
50 the box.
'
_
_In the accompanying drawing, which illustrates
an oil-tight joint, I surround the ?ange-with a 50
contractile member which is preferablya coil
one‘ form of oil seal and dust guard made in ac- _ Spring '8 0f the garter type- To Prevent 51S
cordance with my invention, together with a placement of the spring it is enclosed in a sack
portion of a journal box-‘and axle‘ to which the I9 of ?exible material. " This sack isheld in posi
same is affixed, Figure 1 is a horizontal section, ' tion by an inner retaining ring 20 which, to-_55 ’
2
2,105,871.
gether with an outer retaining ring 2|, secures , pansion member holding the sheet against a wall
_
the sealing sheet to the sealing plate. Rivets 22 of the channel.
2. In a device of the class described, a sealing
are preferably used to attach the rings to .the
plate. The material of the sealing sheet between i unit for application to the Journal box and axle
the rings 20 and 2| forms an annular pocket in ‘of a railway bearing; said unit comprising a seal
ing plate provided with an opening for the axle,
which is positioned an expansion ring 23 of rub
ber or other elastic material. In its expanded a ?exible sealing sheet contacting with the axle’
form the thickness of this ring is greater than throughout its periphery to form an oil seal, a.
the distance between the rear face 8 of the box
10 and the inner face of the sealing plate so that it
must be compressed when positioned, thus hold
ing the sealing sheet ?rmly against the ?nished
face 8 of the box to form a sliding oil-tight joint
therewith. As the ring 23 is completely enclosed
15 by the sealing sheet and the sealing plate, oil
from the box cannot come in contact with the
ring. In this way the deleterious e?ects of oil
on rubber are avoided.
.
.
The operation o1’_ my device is as follows: When
20 the box is jacked up, axle 9 exerts pressure on
the ?ange l1, spring l8, and sack is until the
sealing plate l2 comes in contact with the axle.
This occurs before said parts I1, I 8 and is have
reached their elastic limits. A further move
25 ment of the box upwardly, forces the entire seal
limit to slide on the ?nished face 8 of the box,
during which movement an unbroken sealing
Joint is maintained between the box and the unit.
The openings l0 and ii are of such size as-to
30
limit the relative movement of the box and axle
before the seal limit is‘ reached. In the running
pair of concentric retaining rings clamping said,
sheet to one side oi! the plate, and an expansion
ring of elastic material positioned between the
sheet and plate intermediate the retaining rings.
. 3. In a device of the class described, a sealing
unit for application to the journal box and axle
of a railway bearing; said unit comprising a seal
ing plate provided with an opening for the axle,
a‘ ?exible sealing sheet, a pair of concentric re
taining rings clamping said sheet to one side of
the plate, and an expansion ring of elastic ma
terial positioned between the sheet and plate in 20
termediate the retaining rings, said sheet extend
ing inwardly beyond the edge of the axle open
ing in the plate and provided with a ?ange for
contact with the periphery of the axle.
-
4. In a device of the class described, a sealing 26
unit for application to the journal box and axle
of a railway bearing; said unit comprising a seal
ing plate provided with an opening for the axle,
a ?exible sealing sheet, a pair oi‘ concentric re
taining rings clamping said sheet to one side 30
oi.’ the plate, an "expansion ring of elastic mate
rial positioned between the sheet and plate in
position, any horizontal movement of the axle termediate the retaining rings, said sheet ex
relative to the box is absorbed by the parts I1,_ tending inwardly beyond the edge of the axle
I8 and IS without disturbingI the seal as. this opening in the plate and provided with a ?ange
movement is limited‘ by contact of the axle with for contact with the periphery of the axle, an
the edge of the box opening.
'
'
I
Having fully 'described my invention, what I
claim as new and desire to secure by Letters Pat
ent of the United States is:
.
1. In a device of the'class described, a sealing
unit for use with a journal box provided with a
channeivand also cooperating with an axle pro
annular retaining sack ofv ?exible material held
in position by the inner retaining ring, and an
annular contractile member within said sack for
holding the ?ange against the periphery 01' the 40
axle.
5. In a device'of the class described, a sealing
unit for application to the journal box and axle
Jecting- into said box‘ through an opening 01' such .of a railway bearing, said box being provided
stze as-td permit relative movement between the with a sealing channel having outer and inner 45
axle and vbox; said unit comprising a sealing walls; said unit comprising a sealing plate pro
plate, a ?exible sealing sheet contacting with the ' vided with ‘an opening for the axle, elastic means
axle throughout its periphery to form an oil seal carried on one face of said sealing plate for form
and with a wall of the box, lugs von the sealing ing an oil-tight Joint with the inner wall 01' the
plate cooperatingwith a wall- or, the channel to sealing channel, and lugs on‘ the other side 01’ the
plate engaging shoulders on the outer wall 01' the
prevent rotation of the plate, said lugs permit
ting relative vertical movement between the channel to limit the‘ ‘vertical movement oi! the
unit relative to the box.
plate and box but preventing‘substanti'al hori
ALBERT VIGNE.
zontal movement between said parts, and an ex
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