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Патент USA US3059953

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Oct. 23, 1962
_1_ J, HENNESSY
3,059,938
RAILWAY AXLE BOX OIL AND DUST SEAL
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Patented Oct. 23, 1%62
The guard is inserted downwardly through the open
3,959,938
RAILWAY AXLE EUX @1L AND DUST SEAL
James J. Hennessy, Chambersburg, Pa., assigner to Hen
nessy Lubricator Company, Inc., Chambersburg, Pa.,
a corporation of Deia‘ware
Fiied Dee. 19, 1958, Ser. No. 781,588
4 Claims.. (C1. 277-1311)
The invention relates to oil and dust guard devices
for railway rolling stock journal boxes of the Association
of American Railroads (AAR.) type, and the main ob
ject of the invnetion is to etîectively seal the annular
space between the walls of the dust guard and the portion
of the railway axle passing through lthe same, irrespective
of the play of the axle relative to the box lengthwise of
the axle and transversely of the axle.
This application is a continuation-in-part of an ap
plication filed February 6, 195 8, Serial No. 713,591, and,
as disclosed in the earlier application, the guard includes
inner, outer and intermediate plate-like members aper
tured to receive an axle, the intermediate member being
slidable over the outer members transversely of the
aperture axes and being provided on its inner periphery
with normally inturned wiping edges and ltabs of suf
top of the pocket and consists of a body comprising rear
and front members 15, 17, having a contour substantially
ñtting the perimetric walls of the pocket, formed by the
box bottom and side walls 10, 11, and an intermediate
member 14 slidable over members 15, 17 transversely of
the longitudinal axis of the journal. Members 1S, 17
are formed preferably of sti‘II plastic sheet material.
Front member 17 has a right angle rim 18 around its
periphery. A strip 20 of compressible packing extends
along the side and lower edges of rim 13 and is secured
thereto by staples Z2. Strip 20 overlies the correspond
ing edges of intermediate member 14 and includes a
radially projecting bead 24 arranged for sealing contact
with the perimetric walls of the dust guard pocket in the
box.
It may or may not contact with box wall 13 when
compressed. The upper end 26 of rear member 15 is
bent over rim 18 of the front «member and is secured
thereto «by staples 28 which also pass through a strip of:
felt 30 which extends between the pocket walls 12 and 13
and forms a seal therewith. A closure 31 may be in
serted in the pocket over seal 30.
Body members 15, 17 and intermediate member 14
have central apertures through which the axle journal 3
ñcient fiexibility to ñt closely against the axle periphery 25 and dust guard seat 7 may pass. In body members 15,
17 the apertures are substantially larger in diameter than
irrespective of normal variations in the diameter of the
the axle guard seat 7 and the axle may move freely
axle or the member apertures.
In addition to the axle contacting structure of the
transversely of its axis `without contacting the peripheries
from having a sealing contact with one or both of the
transverse end walls of the pocket as has been used in
members so that the intermediate member may slide over
the opposing faces of the front and rear members as the
of the apertures.
earlier application, the present device has novel `sealing
The outside diameter of the intermediate member 14
contact with the peripheral side and bottom walls of the 30
is substantially less than the width of the front and rear
dust guard pocket in the journal box, as distinguished
earlier guards. 'I‘his avoids the necessity of using springs
of substantial tension to force a wide face on the dust
guard against the pocket end Wall and makes the applica
tion of the dust guard to the journal box, and its removal
therefrom, much easier and facilitates making the dust
guard of thin, relatively lightweight plastic sheet material
axle shifts transversely of its axis. Guard members
141, 15, 17 are made of a plastic material sold under the
trade name Zytel which possesses exceptional character
istics for resisting wear from friction and, when in sheet
form, for resiliently returning to an original plane after
repeated flexing. This is particularly desirabie for the
instead of relatively heavy steel plates, which is an 40 intermediate member which comprises an outer ring 32
and an inner ring 33 connected by an oíîsetting shoulder
economical advantage. Also the plastic material has un
34. The inner periphery of ring 33 (FIGURE 3) forms
expected flexing and wear-resisting characteristics particu
a plurality of triangle-shaped tabs 36 with points 37 pro
larly advantageous in sealing the journal and box against
jecting toward the axis of the aperture in- their normal
passage of oil and dust. The attainment of these specific
45 undistorted condition. These tabs are thinner than the
advantages is a further ldetailed object of the invention.
remainder of the insert but have reinforcing ridges 33
In the accompanying drawings illustrating the inven
extending from near the outer points of the triangles to
tion:
near the inner bases of the triangles. Accordingly, when
FIGURE 1 is a perspective of a cutway box and guard
the axle is thrust through the apertures in the guard, tabs
mounted on an associated axle.
FIGURE 2 is a vetrical section through the box and 50 36 bend readily about their thin wide bases and distort
to the position shown in FiGURES 1 .and 2 where they lie
guard shown in FIGURE 1, the intermediate portion of
along dust guard seat 7 parallel to the axis of the axle
the structure being broken away to make possible the
and the guard apertures and project to the left of the
showing on a larger scale.
plane of ring 32. At the side of the ring portion 33 oppo
FIGURE 3 is a transverse section of a journal box, ap
proximately on line 3--3 of FIGURE 2, with the guard 55 site to the distorted tabs is a continuous thin annulus 39
which contacts dust guard seat 7 irrespective of wear of
in place but before the journal has been inserted »through
the latter.
the guard.
The thicker elements 32, 33, 34 are stift" enough that the
FIGURE 4 is a horizontal section on line 4--4 of
insert moves with the axle as the latter shifts transversely
FIGURE 3.
FIGURE 5 illustrates a relative position of the dust 60 of its axis and the insert slides over body members 1S,
17. The oiisetting shoulder-like portion 34 may yield
guard and axle when the latter has shifted to the right,
slightly to accommodate iitting of the bases of tabs 36 to
from the position shown in FIGURE 2, as occurs during
the axle dust guard seat 7 and to accommodate minor
normal operation.
movement of the .axle transversely of its axis without
The axle has a wheel seat 1 for the wheel 2 and a
thereby distorting the tabs Vwhich wipe surplus oil from
journal 3 supporting a bearing 4 which mounts a wedge
the dust guard seat 7. The outer ring portion 33 may
5 on which the box is carried. Between the axle portions
yield transversely of its plane to accommodate slight shift
1 and 3 is the guard opposing portion or seat 7 of greater
ing of the axle lengthwise. The oil is held against escap
diameter than the journal and less diameter than the wheel
ing from the journal box pocket by the seal provided
seat. The journal box includes the usual top wall 9, bot
through bead 24 which engages the perimetric Wall of the
tom wall 10, side Walls 11 and dust guard pocket end
pocket but does not rely upon horizontal pressure contact
walls 12 and 13. All #the above mentioned elements are
familiar A.A.R. >standard structure.
with either of the pocket rear walls to form a seal.
3,059,938
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FIGURE 5 shows a relative position of the dust guard '
and the end of the dust guard seat 7, somewhat exagger
ated, which is assumed repeatedly during the axially shift
to maintain contact with the axle portion by its own
resiliency to wipe surplus lubricant from the adjacent axle
surface toward the bearing engaging surface of the journal.
The resilient outer ends
2. An oil and dust seal for a railway axle and axle
of the tabs tend to return to the plane of inner ring 33 5 box, comprising a stiff plate-like body having a contour
_ ing movements of the journal.
and this insures the wiping of surplus oil from the
“corner” of the axle, which ordinarily ,acts as a throw
olf point for discharge of oil. ln this position (FÍGURE
5) the major portion of the guard is still to the right of
the shoulder between axle portions 7 and 3, and it is easy
for the tabs to be drawn back to the position shown in
FIGURE 2 when the axle shifts in the opposite direction.
This avoids undesirable transverse forces on the interme~
diate member ring 32 and a tendency to twist it as the
axle reciprocates.
Rivets 40 extend between front and rear members 15,
17 and are received in notches 41 in the outer periphery
of ring 32 and hold the intermediate member against
rotation with the axle.
If desired, the journal box may be removed from the
axle without withdrawing the dust and oil guard from the
pocket in the box. This is because the elements 33, 34,
36, will yield as they pass over the collar (not shown)
at the outer end of the journal in both off and on move
ments without damage to the ring.
The improved structure described above provides a
adapting the body to ñt within the perimetric Walls of
an axle box dust guard pocket, said body being provided
with an aperture large enough to accommodate sub
stantial movement, diametrically of the aperture, of au
axle passing through the aperture, and a plate-like mem~
ber comprising an outer ring portion, slidable over the
face of said body, and a smaller diameter ring portion
offsest transversely of the general plane of said outer ring
portion and normally parallel to the latter and provided
with an aperture with serrations about its periphery form
ing inwardly pointed wiping tabs resiliently distortable to
extend axially of the aperture to snugly engage an axle
passed through both of said apertures and to wipe surplus
oil from the axle and to incline over the corner on the
axle between its journal and its dust guard seat.
3. An oil and dust seal for a railway axle and axle
box according to claim l in which the tooth-like projec
tions, when distorted, project a substantial distance be
yond the plane of the outer ring member and are deep
enough to be inclined toward the aperture axis and
diagonally overlie the edge of a shoulder in the axle.
more eñicient and longer lasting guard than previously
4. An oil and dust seal for a railway axle and axle
used, seals the lubricant from leakage to and beyond box
box comprising a body with front and rear plate-like
wall 13, and attains the objectives set forth in the intro
members each having an edge contour adapting its edge
ductory portion of the speciñcation.
30 to contact with the perimetric walls of an axle box dust
Details of the structure may be varied without depart
guard pocket, and an intermediate member of less Width
ing from the spirit of the invention and the exclusive use
and depth than said front and rear members and slid
of those modifications coming within the scope of the
able bodily over the opposing faces of the latter, each of
claims is contemplated.
said members having an aperture to receive an axle, the
I claim:
35 apertures in the body members being of substantially
l. An oil and dust seal fora railway axle and axle box
greater diameter than the diameter of the axle portion to
comprising a body with front and rear plate-like mem
bers each having an edge contour adapting its edge to con~
which the seal is to be applied, the aperture in the inter
mediate member being of smaller diameter than the diam
tact with the perimetríc Walls of an axle box dust guard
eter of the axle portion to which the seal is to be applied,
pocket, and an intermediate member of less width and 40
and the portion of the intermediate member forming the
depth than said front and rear members and slidable
bodily over the opposing faces of the latter, each of
said members having an aperture to receive an axle, the
margin of the periphery of said latter aperture being of
thinner material than the major portion of the intermedi
ate member and being yieldingly distortable to a position
apertures in the body members being of substantially
greater diameter than the diameter of the axle portion to 45 normal to the general plane of the intermediate member
when subjected to thrust by an axle inserted through the
which the seal is to be applied, the aperture in the inter
member apertures, the body front and rear members be
mediate member being of smaller diameter than the
ing of rigid material and there being a strip of material
diameter of the axle portion to which the seal is to be ap
extending along the side and bottom edges of said body
plied, and the portion of the intermediate member forming
and compressible between said edges and the perimetric
the margin of the periphery of said latter aperture being 50 walls
of the pocket.
of thinner material than the major portion of the inter
mediate member and being yieldingly distortable to a
References Cited in the file of this patent
position normal to the general plane of the intermediate
member when subjected to thrust by .an axle inserted
UNITED STATES PATENTS
through the member apertures and including a series of
1,811,588
Moreau _____________ __ June 23, 1931
saw tooth-like tabs normally pointed toward the axis of
1,989,110
Penniman ___________ __ Ian. 29, 1935
the aperture but distortable into positions substantially
2,012,974
Penniman ____________ _... Sept. 3, 1935
paralleling said axis and projecting transversely from the
2,103,555
Rowe _______________ __ Dec. 28, 1937
plate-like members and yieldable transversely of said axis
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