US3044788A - Dust guard well cap - Google Patents

Description

July 17, 1962 w. H. KORN 3,044,788

DUST GUARD WELL CAP Filed Aug. 30, 1960 2 Sheets-Sheet l FIG. 2

ATTORNEYS July 17, 1962 w. H. KORN 3,044,788

DUST GUARD WELL CAP Filed Aug. 30, 1960 2 Sheets-Sheet 2 52' fs4 03 2- 4w, f5?

5B mmm 5 5 o FIG. I2

.63 WALDEPIANAVNII?ORN BY/vww, Erm/1 bww ATTORNEYS United States Patent iiice 3,044,788 DUST GUARD WELL CAP Waldemar H. Korn, 729 Western Ave., Davenport, Iowa Filed Aug. 39, 1960, Ser. No. 52,980 Y 3 Claims. (Cl. 277-131) The present invention rel-ates to ian improved construction in railway car journal boxes. f

At the inner end of the conventional railway car journal box there is customarily provided a vertical transverse well or slot for reception of a dust guard which encircles the car axle. In my copending application, Serial No. 538,857 iiled October 6, 1955 now Patent No.,2,95l,7l8, I have shown, `described and claimed an improved form of dust guard which fits in such a well While the present application which is 'a continuation-in-part of said copending application is more particularly directed to my improved construction of well cap for enclosing the dust guard in said well and its cooperating relation with the aforementioned dust guard.

A principal object of the present invention is to provide railway car journal boxes with a cover for their dust guard receiving well .which is of simple construction but nevertheless is effective to prevent the entrance of dust and other foreign matter from exterior of the box and which cover will :also cooperate with the dust guard to form ltherewith an effective seal against the escape of` oil sealing material such as neoprene, molded rubber, rub-' berized cloth or the like, -the three layers being secured together by stapling or in any other `suitable manner. A central opening passes through all three layers for receiving the ycar axle.

. The intermediate layer of sealing material is formed around its outer periphery with two outwardly divergent elastic lips which taper in diminishing thickness to feather edges. These flare laterally beyond the outer side surfaces of the plywood backing layers and establish sealing contact with the side walls of `the vertical Well or slot receiving the dust guard. The lower peripheral portion of the intermediate sealing layer may also be formed with a third elastic lip which projects downwardly between the two outwardly divergent elastic lips.

In accordance with my present invention, I provide a well cap having means by which it may be fitted to the open top of the dust guard receiving well after the dust guard has been inserted therein and which may be firmly but releasably secured thereto. Preferably it will be constructed in the form of `a sheet metal stamping having a compressible sealing gasket on its under side for establishing an oil tight seal against the top of the well and will have means which cooperate with the elastic lips of the aforesaid construction of ydust guard to increase the effectiveness thereof in its sealing function against the escape of oil from the box either along the axle, or along the walls or out through the top of the aforesaid well in which the dust guard is positioned.

Thus, a feature of my improved well cap is the provision of a parting rib on its underside which projects therefrom downwardly and serves to spread apart the two divergent elastic lips extending upwardly from the top of the dust guard, keeping these two lips pressed outwardly into contact with the side walls of the well independently of up and down movement of the dust guard Within the well.

Advantageously, said rib h'asna relatively long hori-v zontally extending expanse of engagement with the top edge of the dust guard so as to effectively key or limit the to and fro rotary or rocking movement to which the dust gua-rd is subjected in its sealing function about the car vsize construction according to which one size well cap can be varied in dimensions to iit different'sizes of wells.

Another feature of my improved well cap is the provision of improved fastening means for fastening the-cap to the top of the well. y

Other objects and features of the invention will appeal from the following detailed description of certain preferred embodiments thereof. v

In the accompanying drawings illustrating suc-h embodiments: Y K Y FIGURE 1 is a vertical sectional view of a car journal box with the car )axle shown in elevation and my improved cap shown in section enclosing the top of a well containing a dust guard in accordance with the'invention; n FIGURE 2 is van enlarged fragmentary sectional View through the dust guardv receiving well of the journal box shown in FIGURE l;

FIGURE 3 is a top plan view of one form of my improved well cap; Y FIGURE 4 is a reverse or bottom view of the well cap shown in FIGURE 3; n

FIGURE 5 is a longitudinal sectional view o-f the cap, showing the latter mounted on a dust guard receiving well; FIGURE 6 is a transverse sectional View on a larger scale, taken approximately on the planeof the line 6-6 of FIGURE 5;

FIGURE 7 is a transverse sectional view taken approximately on the planeof the line 7-7 of FIGURE 5;

FIGURE 8 is 1a fragmentary plan View of one end of the cap showing the top 'and side tongues bent inwardly for adapting the cap to a smaller size of Well;

FIGURE 9 is `a transverse sectional view through a modied construction employing an internal fastening clip for holding the cap on the well; n

FIGURE 10 is ra vertical sectional view through one of the internal fastening clips;

FIGURE 1l is la longitudinal sectional view other form of the invention;

FIGURE 12 is a transverse sectional view, taken approximately on the plane of the line 12-12 of FIGURE ll;

FIGURE 13 is a transverse sectional view showing an indented lug form of fastening means;

FIGURE 14 is an elevational view showing the indented lug in one of the side ilanges;

FIGURES 15 Vand 16 tare transverse ysectional views showing two further forms of fastening means;

FIGURE 17 is a fragmented longitudinal sectional view of still another form of fastening means; and` FIGURE 18 is a fragmented top plan of the embodiment illustrated in FIGURE 17 as viewed from a position indicated by line 18-18. v

Referring first to FIGURES l and 2, a railway car journal box 15 is provided at its outer end with an opening 16 which is normally closed by a suitable cover 17 hinged to the box at 18. The inner end of the box is provided with a cylindrical opening 19 for receiving the journal ofthe car axle 20. The journal comprises an outer bearing portion 21 and an inner portion 22 of larger diameter. Engaging with the outer bearing portion 21is the conventional arcuate bearing 23 held in place in the box by the conventional bearing wedge 24.

.Formed at the inner end of the journal box is a conventional dust guard well or slot 25 having an open top 26, parallel side walls 27 and a bottom wall 29. Cylindrical Patented July 1-7, 1962l of tanopening 19 at the inner `end of the journal box passes through this dust guard well or slot and is of larger size than the large journal portion 22 to permit the journal to have limited floating or vibratory movement in the box.

The dust guard, designated in its entirety, comprises a stii body portion made up of two spaced backing layers or laminations 31 and 32 composed of plywood, pressed libre board such as Masonite, and the like. Interposed between these two backing layers 31 and 32 is an intermediate sealing layer or lamination 33 composed of neoprene, molded rubber, rubberized cloth or other elastomeric or rubbery resilient material. The three laminations 31-33 are preferably secured together by wire staples 34 passing through all three laminations, although they might be secured together by rivets, pins, bolts or the like, or by a suitable adhesive. A central opening 35 passes through all three laminations for receiving the journal portion 22 of the car axle.

Formed integral with the intermediate sealing layer 33 and projecting outwardly from the outer peripheral portion thereof are two laterally or outwardly divergent lips or tins 36. The outer edges of these outwardly divergent lips 36 establish elastic sealing contact with the side walls 27 of the dust guard slot or well 25.

Formed around the lower peripheral portion of the intermediate elastic layer 33 is a third lip 37 which projects downwardly or outwardly between the two outwardly divergent lips 36, this third lip subtending the arcuate lower edge of the dust guard, and possibly the side edges as well. This intermediate third lip 37 bears against the bottom or outer transverse wall 29 of the dust guard slot or well 25. All three lips are of long tapering cross-section, preferably tapering to feather edges. The lips are capable of deflection, compression and change of shape so that they can readily adapt themselves to different dimensions of dust guard slots or wells, and can also accommodate themselves to endwise shifting or transverse displacement of the car journal within the journal box, meanwhile maintaining effective sealing contact with the side walls 27 and bottom wall 29 of the slot or well 25. The two laterally divergent lips 36-36 are initially molded so that they are outwardly to a dimension wider than the space between the side walls 27-27 of the dust guard well 25. When the dust guard is inserted into the well 25, these laterally divergent lips 36-36 are resiliently squeezed together into the smaller dimension between the side walls 27-27 of the well, as shown in FIGURE 2. As a result of being thus squeezed together, these two lips have a resilient bias tending to hold them pressed outwardly against the side walls 27-27. The adjacent edges of the plywood backing layers 31, 32 are beveled around .their outer peripheries to form a V-shaped groove 3S therebetween for receiving the base portions of the laterally divergent lips 36, 36.

Sealing contact between the dust guard 30 and the car journal 22 is established by an internal annular lip 4i) which projects inwardly from the intermediate layer 33 around the central opening 35. This internal annular lip is of wedge-shaped contour and projects inwardly slightly beyond the inner edges of the backing layers 31 and 32 with the central pointed edge of its wedge-shaped contour engaging with a snug iit over the journal portion 22 of the car axle. The adjacent edges of the plywood backing layers are beveled to form an internal annular V-shaped groove or escape trough 41 therebetween into which said wedge-shaped internal annular lip 40 can be either horizontally deflected or vertically compressed whenever an axial or a relative vertical displacing motion occurs between the journal and the journal box. When either of these horizontal or vertical motions occur between the journal box and the journal, the internal annular lip 40 escapes shearing, tearing or abrasion between the car journal 20 and the stiiening backs 31 and 32 by retreating into the escape groove 41 either by lateral deflection or by radial compression of such internal lip 40. This internal annular lip 40 is held pressed upwardly against the under side of the car axle by the resilient thrusting reaction exerted against the bottom wall 29 of the well 25 by one or more of the sealing lips 36, 36, 37. In FIGURE 2, I have shown all three sealing lips 36, 36 and 37 exerting thrusting reaction downwardly against the bottom wall 29, with the two laterally divergent lips 36, 36 also contacting the side walls 27. However, I may make the intermediate lip 37 longer for effecting sole contact with the bottom wall 29. Thus, as the lower portion of the internal annular lip 40 wears away from contact with the under side of the journal portion 22, the dust guard slides upwardly automatically under the action of this lip pressure reacting ,downwardly against the bottom of the well 25, thereby maintaining an effective seal against oil leakage along the bottom of the journal 22.

Formed in the inner plywood layer 31 in communication with the V-shaped groove 41 are one or more oil return channels 44 which lead from the bottom of the V-shaped groove 41 and open onto the inner face of the inner plywood layer 31. They function to return accumulations of oil from the lower part of the V-shape groove 41 into the interior of the journal box. These oil return channels 44 are oppositely inclined relatively to the opposite direction of rotation of the journal so as to deflect into the journal box accumulations of oil thrown by the journal from the lower part of the V-shaped groove 41. The opposite angles of inclination of the channels 44 accommodate the opposite directions of rotation of the journal within the journal box.

Small deflection grooves 46 are also formed in the outer faces of the plywood stiffening layers 31 and 32 near the central opening 35. The deecting groove 46 in the outer plywood layer 32 aids in deflecting water or dirt thrown along the lower side of the journal from the adjacent car wheel, and the deflecting groove 46 in the inner plywood layer 31 serves to detlect any oil which might be splashed or thrown in an outward direction from the inside of the journal box.

Turning now to FIGURES 3 to 17 inclusive, and first to FIGURES 3-8, I have illustrated my invention embodied in a well cap which has direct cooperation with the above described dust guard. This well cap is fastened in place over the top of the well 25 after the dust guard is in position, and seals the top of the well against oil leakage, which is particularly advantageous in the case of railway dump cars which are adapted to be inverted by dumping mechanism for the dumping of their loads. This well cap, designated 50 in its entirety, is constructed as a channel-shaped sheet metal stamping comprising a central web portion 51 from the sides of which are bent downwardly extending side flanges 52 and 53. Slits 54 extend inwardly at the corners of the channel and define central tongues 51' at the opposite ends of the web portion 51, and also dene side tongues 52 annd 53' at the opposite ends of the side flanges iii?. and 53. Extending longitudinally of the web portion 5l in the form of my invention illustrated in FIGURES 3-6 is a downwardly projecting parting rib 55 which may be an integral punching from the web portion 51 or which may be a bar secured to the web portion. This rib S5 serves to part the upper divergent lips 36 of the dust guard 30 and to keep them pressed outwardly against the side walls 27 of the dust guard slot or well 25, as shown in FIGURE 6. The cooperating engagement between the parting rib 55 and the sealing lips 36 permits movement of the dust guard relatively to the well cap, however, which is desirable in order to enable the dust guard to follow the movements of the journal 21.

Still another cooperative feature of the rib 55 with respect to the dust guard 30, resides in the fact that the relatively long horizontally extending expanse of engagement between the rib 55 and the top edge of the dust guard 30 results in the rib 55 functioning to key or limit the to and fro rotary or rocking movement of the dust guard 30 within the well 25. This rotary or rocking movement trends to occur with the reversing directions of rotation of the car journal, and the presenceof the downwardly projecting rib 55 serves to limit this rotary p movement more effectively than does the engagement of the side lips V3:6, 36 against the `side walls of the Well 25.

Confined against the under side of the well cap is a soft sponge rubber gasket 56 which has a longitudinal slot 57 therein for iitting over the parting ribs 5S. Said gasket may also be formed of neoprene or other suitable resilient elastomeric material. Holes 58 are provided in the central tongues 51 for receiving self-tapping screws 59, and holes 61 may be provided in the side flanges 52 'and 53 for receiving transverse fasteners 6 2 in the form of cotter pins, nails, screws, or the like, which pass through the cap and through the well, as shown in FIG- URE 7.

In present day railway rolling stock there are at least three different sizes of journal boxes for three different sizes of journals, each of these having a diierent length of dust guard well 25. My improved well cap 50 is designed so that one size or type of cap is adapted for universal application to all three lengths of wells. For the well of shortest length, such as illustrated in FIG- URE 5, the central tongues 51 are bent downwardly substantially at the inner ends of the slits 54, or along bending lines which would place these central tongues substantially against the outer end surfaces of the well,

-as indicated in dotted lines a in FIGURE 5. The selftapping screws 59 are then screwed inwardly against the end walls of the well 25. Thereupon, the side tongues 52 and 53 are bent inwardly to overlie the central tongue 51', as illustrated in FIGURE 8.

For a well of intermediate length, the central tongues l are bent downwardly along intermediate folding lines substantially at the end edges of the well, as indicated in dash-dot lines b `in FIGURE 5. After the self-tapping screws 59 have been driven into the well the projecting ends of the side tongues 52 and 53" are bent to overlie the outer sides of the-central tongues 51.

When the well cap is to be applied to a well of maximum length', the three tongues 51', 52 and 53 are not bent downwardly and inwardly, but are left in prolongation of their respective web and ange portions, asindicated in full lines in FIGURE 5. f

The length of parting rib 55 remains the same for all three lengths of wells. With regard to the sponge rubber or neoprene gasket 56, this may be supplied in three different lengths, or may be supplied in a length corresponding substantially to the full length of the cap for wells of greatest length, in which event different end portions of this long gasket will be cut off to accommodate the shorter lengths of wells. This gasket effects a thorough oil tight seal around the upper lip of the well 2.5, which is particularly advantageous in the case of railway dump cars which are adapted to be inverted by dumping mechanism for the dumping oftheir loads. With an open top well, a large part of the oil within the journal box will be lost in the inverting of such a car.

The use of the -transverse fasteners 62 is optional, but when the fasteners are used holes 63` are drilled transversely through the well for receiving the fasteners. Preliminary to drilling these holes, the compressible gasket 56 is placed in a state of compression, such as by placing a heavy weight on the top of the cap 50, or by forcing the cap downwardly and then setting the self- -tapping screws 59. With the gasket thus compressed, the holes 63 are then drilled, either by using the holes 61 in the side flanges to center the drill, or drilling new holes in the side anges concurrently with drilling the through holes 63. I have shown cotter pins as the transverse fasteners 62, but bolts, screws or nails with the ends bent over may be used instead.

As previously described, the parting rib 55 of the cap serves to keep the upper divergent lips 36 of the dust guard 3% spread apart,- and pressed outwardly against the side walls 27 of the dust guard well 25. This aids in preventing transverse leakage of oil past the upper portion of the dust guard. However, the dust guard 30 is free to have a limited amount of vertical and horizontal movement relatively to this parting rib 55, concurrently with change of position of the journal in the journal box.

FIGURES 9 and l0 illustrate the same type of well cap S0, Abut provided with modified fastening means in the form of internal fasteners. These internal. fastenerscomprise inverted U-shaped spring clips 64 secured by rivets 65 to the web portion 5I of the cap, there being one of these spring clips at each end of the cap. These.,

spring clips are adapted to pass down into the well 25, and the outwardly projecting lower ends of these clips are formed with Vserrations or teeth 66 which are adapted to press outwardly against the side walls 27 of the well for fastening the cap to the well.

Referring to FIGURES ll and l2, a modified form of ycap is shown wherein the channel-shaped sheet metal stamping 50A comprises a central web portion 51A of essential planar shape, from the sides of whichare bent ldownwardly extending side flanges 52A and 53A. Slits 54A extend inwardly at the opposite ends of the web portion 51A to form end tongue 51A' and also deiine side tongues 52A and 53A', at the opposite ends of side flanges 52A and 53A. The aforesaid tongues 51A',-

S2A and 53A function' in a similar manner as previously described in connection with tongues 51', 52 and 53's` of the first embodiments, tongues 51A being connected to the wall of Well 25 through self-'tapping screws 59 and the projecting ends of the side tongues 52A and 53A being bent to overlie the outer sides of the central tongues or to extend along the sides of the -well dependent on the size relation thereof to the well. Thus channel member 50A corresponds` to channel member 50 except in the omission of depending rib 55.

Referring back to FIGURES ll and l2, lbeneath web 51A is located a gasket 56A molded ofneoprene or other suitable resilient rubbery or elastomeric material so as to include Ian outer continuous flange portion 56A which is confined between the upper edge of the well 25 and the margins of web 51A and a central disposed longitudinal extending rib portion 561A which functions in a manner corresponding to previously described rib 55 to part the upper divergent lips 36 of the dust guard 30 and to keep them pressed outwardly against sidewalls 27 of the dust guard slot or well 25. If desired web S-IA may be provided with punchings at 51A which press into the material of gasket 56A for further assist in maintaining its aligned relation therewith. In FIGURES 13 and 14, I have illustrated a modied form of fastening means comprising lugs or indentations 68 punched inwardly in one of the side flanges 52A or 53A near opposite ends of the cap. These intended lugs are adapted to seat in recesses 69 formed in the outer wall of the well.25. Self-tapping screws 72 may be provided in the opposite flanges of the cap for engaging the opposite wall of the well. Such a construction may be used in place of pins 62. of FIGURE 7.

FIGURE l5 illustrates another form of fastening means comprising two horizontal ribs 74 which project from the outer walls of the well, these ribs being either welded to the well or cast integral therewith. The side llanges 52A, 53A of the cap are spaced outwardly a sufficient distance to pass downwardly over the ribs, and the lower edges of these side anges are formed with inwardly bent lips 76 adapted to hook under the ribs 74. In mounting the cap, the hook-shaped lip 76 on one of the side flanges is hooked under the corresponding rib 74, and the other side ange is then bent downwardly and inwardly to hook its lip 76 under its respective rib 74.

In FIGURE 16, the well is provided with the same two outwardly projecting ribs'74, but instead of having 7 the side flanges of the cap hook luider the ribs, this is done by inverted U-shaped spring clips 78 which are riveted at 88 to the end portions of the cap and which have inwardly bent lower endsSZ adapted to hook under their respective ribs 7 4.

Although the modied forms of fastening means illustrated by FIGURES 13-14, 15 and 16 have been shown and described in relation to the embodiment of the invention illustrated by FIGURES 1l aud l2, it will bei understood that said fastening means are likewise adapted for the irst described embodiments of the invention and are intended to be also included as further possible modications of the previously described fastening means for anges 52 and 53 thereof.

Referring now to FIGURE 17 still another arrangement for detachabiy securing my cap to the top of the dust guard receiving well 25 is there illustrated. In this view, 50A represents a channel member having side anges corresponding to 52 and 53 or 52A and 53A of the previously described embodiments. The previously described tongues 51, 52', 53 or 51A', 2 53A however may be omitted. Instead of relying on self-tapping screws S9, connecting means in the `form of a blade spring 34 may be provided. As shown in FIGURE 17 blade spring 84 extends lengthwise of cap 56A', and is suitably connected thereto as by means of a pair of tabs 85 struck upwardly at spaced points from the metal of member 50A', passed through aligned slots 89 in blade spring 84 and oppositely bent over the outer surface of member 50A. Any other suitable means may be employed, however, as for example the aforementioned rivets as utilized in the embodiment of FIGURE 16. The opposed end portions 86 of said blade spring arch outwardly and downwardly terminating in ends 87 which resiliently engage beneath suitable stops 8S and so releasably hold the cover in place over the entrance to well 25. Although FIGURE 17 has been illustrated utilizing a gasket 56A having a rib 56A, it will be understood that the rib may instead be provided on the central web of the channel member 50A as in the embodiment of FIGURES 3-6.

Each of the above described fastening means is arranged to hold the well cap securely on the well 2S with the sponge rubber or neoprene gasket 56 or 56A in a state of compression and so that its rib portion will have its desired cooperating function with dust guard 30.

While I have illustrated and described what I regard to be the preferred embodiments of my invention, nevertheless it will be tuiderstood that such are merely exemplary and that numerous modifications and rearrangements may be made therein without departing from the essence of the invention.

I claim:

l. In combination, a dust guard for mounting in the dust guard receiving well of a car journal box, said dust guard comprising a pliable sealing lip of elastomeric material projecting upwardly from the upper portion of said dust guard, and a cap separate from said dust guard adapted to it down over the top of the well for closing the top of said well after said dust guard has been inserted therein, said cap including means adapted to hold said pliable sealing lip pressed against the adjacent wall of said well. y

2. In combination, a dust guard for mounting in the dust guard receiving well of a car journal box, said dust guard including a pair of laterally diverging sealing lips of elastomeric material projecting upwardly from the upper portion of said dust guard, and a cap separate from said dust guard including a channel member adapted to fit down over the top of said well for closing the same, a sealing member located between said channel member and the top of said well, one of said members including a projection depending into said well opening and holding said sealing lips pressed outwardly into contact with the sidewalls of the well, and means fastening said cap to the top of the well.

3. In combination, a dust guard for mounting in the dust guard receiving well of a car journal box, said dust guard including a pair yof laterally diverging sealing lips of elastomeric material projecting upwardly from the upper portion of said dust guard, and a cap separate from said dust guard including a channel member adapted to t down over the top of said well for closing the same, a sealing'member located between said channel member and the top of said well, said sealing member including a projection depending into #said well opening and holding said sealing lips pressed outwardly into contact with the sidewalls of the well, and means fastening said cap to the top of the well.

4. In combination, a dust guard for mounting in the dust guard receiving well of a car journal box, said dust guard including a pair of laterally diverging sealing lips of elastomeric material projecting upwardly from the upper portion of said dust guard, and a cap separate from said dust guard including a sheet metal stamping adapted to tit down over the top of said well for closing the same, a resilient sealing gasket having a peripheral ange portion located between portions of said sheet metal stamping and the top of said well, said gasket having a centrally located longitudinally extending projection depending into said well opening and holding said sealing lips pressed outwardly into contact with the sidewalls of the well, and blade spring means mounted on said sheet metal stamping fastening said cap to the top of the well.

5. In combination, a dust guard for mounting in the dust guard receiving well of a car journal box, said dust guard comprising two laterally divergent sealing lips of elastomeric material projecting upwardly from the upper portion of said dust guard, and a cap separate from said dust guard adapted to tit down over the top of the well for closing the Vtop of said well after the dust guard has been inserted therein, said cap comprising a parting rib projecting downwardly therefrom as a fixed part of said cap, said rib being adapted to engage between said sealing lips for holding said sealing lips pressed `outwardly into contact with the sidewalls of said well irrespective of up and down movement of the car journal and dust guard within said well, said parting rib also limiting rocking movement of said dust guard within said well.

6. In combination, a dust guard for mounting in the dust guard receiving well of a car journal box, said dust guard comprising two pliable laterally divergent sealing lips of elastomeric material projecting upwardly from the upper portion of said dust guard, said sealing lips being of tapering cross section tenminating in feather edges, and a cap separate from said dust guard adapted to tit down over the top of the well for closing the top of said well after the dust guard has been inserted therein, said cap comprising a sheet metal stamping having a central web portion and downwardly extending side flanges, a parting rib integral with and extending downwardly from said central web portion and adapted to engage between the feather edges of said sealing lips for holding the latter pressed outwardly against the sidewalls of said dust guard receiving well independently of up and down movement of said dust guard within said well, tongues at the ends of said well cap adapted to be folded to overlie the ends of shorter wells, and fastening means for fastening said well cap to said well.

7. In combination, a dust guard for mounting in the dust guard receiving well of a car journal box, said dust guard comprising two pliable laterally divergent sealing lips `of elastomeric material projecting upwardly from the upper portion `of said dust guard, said sealing lips tapering upwardly in diminishing thickness to feather edges, and a cap separate from said dust guard adapted to t down over the top of the well for closing the top of said well after said dust guard has been inserted therein; said cap comprising a downwardly extending parting rib constituting Ia rigid part of said cap adapted to engage between the feather edges of said sealing lips for holding said lips pressed outwardly against the sidewalls of said well, said parting rib holding said feather edges against the sidewalls of said well irrespective of up and down movement of s-aid dust guard within said well, and also serving to limit rocking movement of said dust guard within said well, and a compressible gasket carried by said cap for establishing an oil tight seal with the top edge of said well.

8. In combination, a dust guard for mounting in the dust guard receiving well of a car journal box, said dust guard comprising a pliable sealing lip projecting upwardly from the upper portion of said dust guard, anda cap separate from said dust guard adapted to t down over the top of well for closing the top of said well after said dust guard has been inserted therein, said cap comprising la sheet metall channel member and a sealing gasket member on the underside thereof, one of said members having a projection depending therefrom adapted to hold said pliable sealing lip pressed against the adjacent Wall of said lo well, said sheet metal member including a central web portion overlying said sealing gasket member, ydownwardly extending side anges and downwardly extending end flanges, said end flanges comprising freely bendable end flange portions capable of being bent inwardly at different bending `lines depending upon the width of the dust guard receiving well, said end langes also having bendable portions capable of being bent downwardly at different bending lines to accommodate diierent widths ofl dust guard receiving wells.

References `Cited inthe tile of this patent UNITED STATES PATENTS De Shazor Oct. 21, 1958

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