US2143249A - Lubricant sealing means for journals - Google Patents

Description

Jan.

P. J.- POOL LUBRICANT SEALING MEANS FOR JOURNALS Filed Nov I 2, 1937 5 Sheets-Sheet l 1 I E24. \ZA- Z7 INVENTOR 3 v Pefer J Pao/ 1: TEE/3W4 Jan.- 10, 1939. 5, P OL 2,143,249

LUBRICANT SEALING MEANS FOR JOURNALS Filed Nov. 2, 1937 s Sheets-Sheet 2 2/ 1/ 5 Z/U 5 I v F 1516. M

. 70 Refer" JPoo/ 2% g5 86 k\ E Jan. 10, 1939. P. J. POOL 2,

- LUBRICANT SEALING MEANS FOR JOURNALS Filed Nov. 2, 1957 5 Sheets-Sheet 3 INVENTOR Pe/er J Poa/ BY J I ATTORNEY m" tact is obtained between the rotating member rinsed Jan. 10, was

PATENT OFFICE LUBRICANT some MEANS FOR JOURNALS Peter J. Pool, Clement, Fla; Application November 2, 1937, Serial No. 172,414

12 Claims. (01. 308-80) This invention relates to journal bearings and more particularly to-a methodand means for lubricating the same.

The invention eomprehends the provision oi a journal bearing particularly adaptable for railway car axles in which the lubricant is maintained within the journal and sealed against leakage.

An object oi. the invention is the provision of means whereby a liquid type lubricant may be maintained in emcient contact with the rotating parts and sealed against leakage by sealing elements which may be assembled after the car axle is in position in the journal box.

Another object of the invention'is the provision of means whereby an efiective and eficient conand resiliently mounted elements for the purpose of retaining the liquid lubricant within the lournal box.

Another object of the invention is to provide an efficient seal for preventing leakage of a. liquid lubricant from the journal box embracing a simple and highly efiective sealing means which may be readily assembled in its proper position within a journal box of the usual construction.

Further objects and advantages are within the scope of this invention such as relate tothe arrangement, operation and function of the'rel'ated elements of the structure, to various details of construction and to combinations or parts, elements per se, and to economies oil-manufacture and numerous other features as willbe apparent ,from 'a. consideration or the specification and drawings of a form of the invention, which may be preferred, in which:

' Figure 1 is a longitudinal sectional view through a journal box and bearing incorporating the. arrangement of my invention;

Figure 2 is a transverse sectional view through the journal box; certain parts being broken away for purposes of illustration; 1

Figure 3 is an isometric view of the sealing supporting means of my invention;

Figure 4 is an enlarged detail view taken subs stantlally on the line H of Figure 2;

Figure 5 is an enlarged sectional view taken substantially on the line Ii of Figure 2; I

Figure 6 is a. plan view showing theassembly of the segments forming a part of the sealing means; i 1

Figure 7 1s a. detail sectional view taken substantially on the line 11 of Figure 3; v t

Figure 8 is an isometric view showing in element of the invention;

upper portion of the journal box.

Figure 9 is a fragmentary sectional view taken substantially on the line 8-4 of Figure 2;

Figure 10 is an isometric view showing an element of the invention; J a

Figure 11 is an enlarged sectional view taken 5 substantially on the line il-li ofFigure 2;

Figure 12 is a side sectional view showing a modified form of the invention; v

Figure 13 is a sectional view of the device shown in Figure 12; the section being taken substan- 10 tlally on the line l3l3 of Figure 12;

Figure 14 is an isometric view or the seal supporting means of the invention;

Figure 15 is a sectionalvlew taken substantially on the line lS-Ili of Figure 13 looking in 15 the direction of the arrows; l g

- Figure 16 is a top plan vlew'ot a portion of the sealing means of the invention; 2

Figure 17 is a sectional view taken substantially on the line "-51 or Figure 13; 3

Figure 18 is a view showing a-modifled form of the invention;

Figure 19 is an isometric view showing a modifled form of sealing segment supporting means;

Figure 20 is an end view 01' the supporting means shown in Figure 19;

Figure. 21 is an enlarged fragmentary isometric view showing the abutment or the sealing means with the bearing brass;

Figure 22 is an isometric view showing the as- 80 sembly o! the segment support and segments forming a part or my invention V Figure 23 is a. fragmentary sectional view showingthe assembly of elements shown in Figure 21,taken on line 23-23 of Figure 21. 7

Referring to the drawings in detail, numeral l designates the journal box of a railway car which has a'pivoted door 2 normally held closed by means of spring 3, the Journal box which is adapted to be attached to or form a part of an 4o associated truck side frame. Within the journal box is the car axle or journal 5, above whichis positioned the bearing brass 6, against which the journal has its bearing, the bearing brass in turn contacting a backing plate'fl secured in th The usual Journal box construction incorporates a. pairo! spaced upwardly extending flanges or projections 1 between which is arranged a. dust or dirt excluding means or guard 8 formed of wood or other suitable material having a central opening to accommodate the axle. This means may be slidably moved. into position in the space between the flanges before the car axle is assembled in the journal box. 7 It is to be noted that [g the car axle is provided with shoulders t and iii which are adapted to straddle the ends of the bearing brass t as particularly illustrated in Figure 1. By this means the brass is caused to follow longitudinal movements of the axle without disturbing the position of the journal box 5.

In the arrangement of my invention, the journal box is provided with spaced plates or abutment walls 2! and 22 which are welded as at 23 at their points oi juncture with the inner wall of the journal box and extend to the top por tion of the box. In incorporating the arrangement of my invention in journal boxes already fabricated, it is preferable to weld the plates 26 and 22 in position in the hon. However, in the construction of an entirely new journal box, the plates 2i and 22 may be cast or otherwise integrally formed with the journal box and the interior walls at and 2b machined to present a smooth surface. lnterposed between the inner walls 2 5 and of these plates is a semi-annularly shaped collar or member 271 having its side walls in a snug yet slidable fit with the walls of the plates. It is to be noted that the upper extremities 2d of the collar 2? do not extend over the diameter of the interior surface of the collar 21 so as to facilitate the assembly of the collar 21 between the plates 2i and 2t. Positioned immediately above the collar all are extensions or blocks 30 which have their lower surfaces resting upon the surfaces 28 of the collar. The lateral exterior walls of collar 21 are provided with slots 3| within which are positioned plates 32 held in place by means of screws 33 extending through openings in the walls of collar'fi'l and project into threaded openings in the plates 32 whereby the latter are fixedly secured to the collar 2?. The blocks so are also provided with slots upon their rear faces to accommodate the connecting plates 32 whereby the latter hold the blocks it in predetermined relation to the collar 271.

The collar 2! is provided with bores 345 which accommodate coil springs 35 positioned between the lower inner wall of the journal box and the collar which serve at all times to urge the collar to its uppermost position.

The interior surface 37 of the collar it is of arcuate or spherical configuration, the curvature being generated in the form of a segment of a sphere having its center at the interception of the axis of the car axle with a central plane passing transversely through the collar 2i. Positioned within the collar 21 and having an exterior surface of coincident spherical curvature with that of the surface 31 is a partial annular member 39 forming a a sealing means support and which is U-shaped in cross section as illustrated in Figure 4. The groove formed in member 39 is adapted to accommodate a. spring plate M which is formed with a plurality of projecting cars 42 adapted to contact with the inner sur face between the side walls of member 39 so as to hold the spring plate 4|. in constant engagement with annularly shaped segments d3, there being three in number in the form of the invention as illustrated in Figure 2. It is to be noted that the series of segments 43 extend circumferentially a. distance approximately equal to two thirds of the circumferential dimension of the axle journal 5 with the end segments contacting the bearing brass 6 as shown in Figure 2.

In order to-provide orassure of a leak proof lubricant seal the segments 43 are preferably supplemented with longitudinal slots 44 in which are slidably positioned relatively small segments arena-lo (it which are arranged to overlap the joints between the larger segments it and at the same time being of considerably shorter length tend to form an extremely close sealing contact with the exterior surface of the ame 5. Such an arrangement of small sealing segments is desirable in that during movement of a car particularly over the rail joints, the car axle journal is subjected to continued vertical oscillation or movement and the small segments having less inertia readily follow the journal to maintain an effective seal. The small segments is are urged into engagement with the axle under the influence of a plurality of coil springs d'l arranged in bores 68 in the segments 36 as shown in Figures and 5. .isparticularly illustrated in Figures 2 and 5, the larger segments 63 are held in engagement with the axle 5 under the influence of coil springs 55}.

The spring plate ii is provided with a series of openings hi to accommodate the springs 5d, the latter being positioned in aligned shallow bores 52 and 53 whereby there is maintained not only a good frictional or sealing contact between segments 633 in the axle 5, but supplemented with the sealing engagement obtained between the segments it and the axle Li, I have provided an effective sealing arrangement which will substantially eliminate any leakage of lubricant from the journal box past the sealing segments.

Arranged at the sides of the bearing brass immediately above the extremities of the blocks 36 are'members 55 which are provided with bores 5d, the latter accommodating coil springs Ell. The inner faces of the blocks or members 55 are provided with felt or other suitable material forming sealing surfaces 53 which are adapted for engagement with the sides of the bearing brass t and the backing shoe 23. The members 55 are also provided at their upper surfaces with bores til in which are positionedcoil springs 6 i], the lat ter tending to urge the members 55 into contact with the upper surface of the blocks 36 positioned above the collar 2i while the horizontally disposed springs 57 urge the blocks laterally so that the felt surfaces iii are in sealing contact with the sides of. the bearing brass d and the backing shoe 23, thus preventing leakage of lubricant adjacent these elements.

In order to prevent seepage or leakage of lubricant adjacent the juncture of the end of one of the segments 39 and the projection it of the bearing brass 5, the member 353 has surfaces t2 in engagement with the side walls of projection it formed upon hearing brass t, the projection it being slotted as at 35 to accommodate the segment it and the supplemental sealing segment Mi so that they may establish sealing contact with the car'axle 5 as shown in Figure 11. It is to be noted that the slot 65 in the projection ii is elongated so as to permit longitudinal movement of the bearing brass 6 independent of the sealing arrangement. By providing the member 39 of a lateral dimension sufficient to overlap the slot 65 in the projection H of the bearing brass, leakage will be prevented at this point because the slot 65 is at all times covered by portions of the .member 39 during longitudinal movement of the'bearing brass and car axle relative to the sealing arrangement.

In the assembly of the arrangement, the collar 2'! is first placed in the journal box and positioned between the plates 2! and 22. A threaded member 25 is then inserted into a. threaded opening in the lower surface of collar 21, the threaded member 28 projecting through an opening 28 in which would otherwise cause or subject the seal-- the bottom wall of the journal box, thethreaded member carrying a nut 36. As the collar 21 is slipped into place, the springs 35 are positioned beneath the'collar and when the threaded memher 25 projects through the opening in the loottom of the journal box, the nut 36 is applied.

and turned until the collar 21 is drawn to its lowermost position in the journal box against the expansive force of the springs 35. with the collar 2'5 in this position, the member it is then moved lnto groper oosltlon with its convex surface resting in the concave sulface of the oollaw: fat. The spring backlog or sealing plate M is then inserted then consecutively slipped: into the slot in the member llll and the soil sprlngs assembled toast: of the segments Due to the fact that the segments when he assembled position extend more than one-half of the way srouml axle, it is necessary that they be in sections less than u diameter in ordel. to he assembler} into position about the axle. the some time, smell segments e are positioned in the grooves lo the larger sesments end movetl lutoplo oer position mound the axle loumel. The cell sum-lee all times tend to urge smolles into sealing relation wltlz the journal. 3 have found it oleelrahle use tlfle supplemental segments i t in order tllot durlue; the movement of the axle when the railway em is in motion the toad regularities sometimes cause vertical move ments the axle sutl lourual, see

- the movements or t. elleetive luhrieaut e toutnsl.

- -'e heel" seal ole neat g t moved 1 theleloolts to utlueuee ol u elt or let tell connect to mem'oess lstlou the title t it heuploerent the h s" the small-gement of my invention the journal e 5: may so rtain a llqultl lubricant which dorms" motlon ol the railway car will. not last: toast the sesllug mes-us herelnhelose described omit :vet rougemeut provides a bath of oil the journal and heating tress without the use of oil soaked waste and the lltse which have been usedzorlot to the present lnventlou. The plate serves the purpose of preventing the oll from pusslutg through the joints of segments W so that shoultl any oil pass downwardly through the spate at the juncture of the segments, the oil woultl be prevented lrom flowlng through the groove in member 39 by reason ol the sealing plate it.

Thus, it will be seen that the sealing means of my invention is positioned luterlorly of the box and inside ol the dust excluding means effectively prevents the ingress. of dust, dirt, ballast or forelgn matterfrom reacluug the interior 0: the box The larger segments 43 are,

posltloned Within coll springs t5.

ing means of my invention or the relatively soft axle journal to excessive wear or become "cut away. 3 a v It will also be seen that with the arrangement of my invention there is afforded considerable 8,11 space at all times around the axle journal which adds in dissipating the heat of friction, thus materially decreasing the temperature of the heating and increasing the life of the bearing.

Flgnres 12 through 1? inclusive illustrate a modified form of the invention in which the journot hex t is provided with spaoed'plates or guides til and, t2 vilthlu which is slldaloly position-eel a horse shoe shapetl construction Z'lf which sorrespomls to the element or collar 2'5 in the form shown in l lmlres l and 2 heremhetore described The collar construction 21' in this form of the invention is assembled from two similarly shaped elements ll! ll viltcleh are recessed at their juxtouosed portions to resolve .tololug plates l3 all t which serve to hold the members "50 and H together toy means oi screws Ill. The assembly ol' elements may take place after the members a ll aml ll are in posltlon to the slot formed by the plates 12d and 22. The lower adjacent portlons oi members and ll are bored and threaded to reeelve e threaclal member so which passes through on lmtllreaded opening it in the lease of the hot; and is'provltled with a. nut 3t vihleh tunotious thew the eons-ttuctlon 2'?! tlotmwez'elly the expansive force of springs to lasllitete assembly of the sealing construcositionetl .wltlun luterlor olroular wall of the sonstrustlon t'l e. partial auuularly shaped l has outer surface coincident ll tvhlsh ls retitled with an all slot lll Wl'llsln is adapted. to Tfifittittl a plurality ol sealing stole hove surfaces adapted to the emlzodlment lllostrateel, I ve sh Wu thaws lntllvlclual seollros: segments l l 37 use so formed as to teel'mlt thelr luseu llt sroulul the car axle the on: its to one "ton lo. the jow'ual loos: as the see- 7 may lusertecl around the axle to the new heremlsel'ose tlescslheol with the tom: of

invention shoves in Flames 1 and 2. The segote also oentmllv slotted to receive a plurality of supplemental segments M which overlo the junctul'es ol theses-meets ll't and engage exterior periphery of the journal W. The

wltltl the journal by means of coil springs 8t and the smollelsegments till are urged into engagement with the journal by means of cell springs to In order to prevent leakage at the abutting ends ol the segments 82, I have provided a. plate member 88 which is similar in construction to the plate M in the form 0!. the invention illustrated in Figures 2 and which serves to prevent'leatzage or seepage of lubricant past the ends 01' the seallng segments. The upper extremities of member ll, the ends of the outermost segments 82, and

the ends of the outermost segments 84 fit in sun:

a that the arrangementof curved surfaces between engagement with the bearing brass G. The extremities of the outermost segments are preferably stepped and the flange portion of the bearing brass 6' is corespondingly stepped as shown at it so as toform an overlap or sealing suri'ace at the juncture of the segments with the bearing brass.

This stepped construction is shown in detail in Figure 17.

The extremities of the element 27 are adapted to be engaged by blocks 55' which are similar in construction to the blocks 55 illustrated in Figures 8 and 9 and which are adapted to engagethe side walls of the bearing brass 6' and the backing shoe 23' in the same manner as in the construction of the arrangement illustrated in Figure 2.

The assembly of this form of the invention is accomplished similarly to that of the form of the invention illustrated in Figures 1 through 11 inclusive. The elements 16 and H are first inserted separately in the space between the abutment walls 2i and 22' and are Joined together by means of retaining plates 18 and 14, the screws lb being inserted to hold these parts in assembled position. This assembly forms the horse shoe shaped element or construction 21 which carries the sealing means. The springs 35' are inserted beneaththe element 21' and the nut 86' manip- -ulated on the threaded member 36 to draw the element 21' to its-lowermost position against the expansive force of the springs 35'.

The annularly shaped plate 11 is then inserted which is shaped to fit the inner cylindrical surface of the element 21'. The sealing segment carrying .element or member 80 is then inserted The segments in assembled position snugly fit' the exterior cylindrical surface of the journal 5' to efiect a seal with the journal. The blocks 55' are inserted and retracted and the journal brass 8 and the backingplate or shoe inserted in position over the car axle journal. The blocks may then be released by manipulation of the nuts 49' cooperating withv the threaded members 38 to permit the vertical surfaces of the blocks 55' to move under the influence of springs 57 and El into engagement with-the lateral edge walls of the bearing brass 6' and the backing plate 23' to effect a lubricant seal at this point.

It will thus be apparent that in the forms of my invention herein illustrated and described, an efiective sealing means is provided wherein the lubricant may be in liquid form and contained within the lower portion of the Journal box i with the car axle journal extending downwardly into the bath of oil or lubricant. It is constantly lubricated and the sealing. means of the invention prevents the loss of lubricant at the rear of the Journal box. It is further to be noted the plate 11 and member 80 is such as to form virtually a ball Joint so as to permit limitedsimilar to the form of the invention shown n- Figures 1 through l1 inclusive, with the suppor essence ing means 27' separated about a vertical trans verse plane into two similar portions 8%" and 3t".

Each of the sections 31' and Bl" are provided with several pairsoi aligned counter bores tilt within which are positioned expansive coil springs iiii which tend to urge the outer walls of the sections 31' and 31" into sealing contact with the inner walls-of the abutment plates 2i" and 22". The sections .37 and iii" are held in assembled relationship and properly maintained in such relationship by means of dowels its snugly fitting into aligned bores HM in the sections of the support. It is to be noted that the exterior surfaces of the portions 31' and 31" are of arcuate con figuration, the curvature being generated about a point on the normal center of the axle journal and the convex arcuate surfaces snugly fit within the member 39' in which construction the ring shaped element it shown in Figure 15 need not be used. In assembling this arrangement; the upper portions 30 are removed from the major sections 31' and 3'! which permits the insertion of the parts into the Journal box, after which clone sealing engagement is thiis maintained between the support and the walls of the plates 2i" and 22" in the journal box.

In Figures 21 and 23, as particularly illustrated, the close sealing engagement oi the yoke or member 39 with the bearing brass 8 illustrates in detail the slot 45 in the projection it formed upon the bearing brass, the slot being for the purpose of permitting relative longitudinal movement of the brass with respec to the brass sealing segment so that moveme t 01! the brass in following the movements of the axle Journal when the car is in motion will not disturb the seal between the segment 43 and the car axle journal. This figure also illustrates how the side portions of member 39 overlap the slot to to maintain the seal at all times, the upper extremity of the member 39 being in contact with the horizontal lower edge portion of the bearing brass t.

Figure 22 shows the particular configuration of the member as and the assembly of the sealing segments,- particularly illustrating the uniplanar walls 45' so as to permit the member 89 to be slidably moved over the axle during assembly and after the member 89 is in position upon the axle the segments 3 may be placed. around the axle into the position shown in Figure 22.

It is apparent that within the scope of the invention, modifications and different arrangements may be made other than is herein disclosed, and the present disclosure is illustrative merely, the invention comprehending all variations thereof.

What I claim is: g

1; In combination with a car axle journal, a Journal box; abearing bram for the icurnai, said journal box having a pair oi spaced abutment walls; a member 'slidably positioned between said walls; said member having a concave inner surface; a second member having a convex exterior surface arranged to coincide with the convex surface on said member; said second member having an annular groove; a sealing plate positioned in the bottom of said groove; and a plurality oi sealing segments having abutting ends positioned in said groove and arranged for sealing engageried by said blocks into sealing engagement with the bearing brass.

11. In combination with .a car axle journal, a journal box; a bearingbrass for said journal, said journal box having a lubricant retaining portion beneath the journal, said journal box having a pair of spaced abutment members; a support slidably mounted between the abutment members; a member carried by said support and having a groove therein; a plurality of segments amaasa journal box; a bearing brass for said Journal, said journal box having a lubricant retaining portion beneath the journal, said journal box having a pair of spaced abutment members; a U-shaped support slidably mounted between the abutment members; spring means positioned between said support and said journal box for urging said support toward car axle journal; a member carried by said support and having a groove therein; a plurality of segments having abutting end portions snugly fitting said groove; spring means for urging said segments into sealing engagement with the car axle journal, said bearing brass having a slot adjacent one of said sealing segments to accommodate the extremity thereof, said 'slot being wider than said sealing segment providing limited longitudinal movement of said bearing brass independent of said sealing segment, said member being wider than said slot whereby said member at all times overlaps the slot in said bearing brass.

PETER J. POOL.

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