US1320122A - Antifriction side bearing. - Google Patents

Description

A. W. CALVIN.

. ANTIFRICTION smE BEARING.

APPLICATION FILED JULY l0, l9I8.-

Patented Got. 28, 1919.

s4 a 4 j l G 4 2l J 1 Ea my av/ y /1/ :a INVENTOR.

ALBERT w. CALVIN, or `PrrrseUae-H, PNNSYLVANIA.

Lajaoaaa..

To all whom it may concern:

Be it known that l, ALBERT W. EMWIN, a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful improvements in Antifriction Side Bearings, of" `which the following is a specication.

My invention relates to anti-friction side bearings for cars used on steam, electric, lor

other railways.l

'One object of the a side bearing in which provision is made for the full angular movement of the car holsters witha dilierential lateral movement of the anti-friction member of the side'bearnother object of the invention isv to pro- .vide a side bearingin which the bearing surfaces arel straight from end' to end and movable members of the bearing from high grade rolled or forged steel and from steel of stock sizes is made possible.

- Another objectl of the invention is lto provide an anti-friction side bearing for railf way cars having a balanced roller with a gravity return roller adapted'to engage with and automatically maintain the balanced roller in a substantially central position on' the lower bearing plate of the sidefbearing. further object of myinvention is to provide a side bearing having novel features of'constructin whereby the bearing is made applicableifor use on holsters.

A still further object ofv my invention is both truck or body the provision of an anti-friction sidefbearing having the novel constructions, combinations andl arrangement of' parts' shown in the drawings, to be described indetail hereinafter, and to be particularly specitied in tlie appended claims.: f 7 Referring nowtof the drawings, 'forming part oflthis specification, Figure lis anfend elevation, partly in'section of my improved bearing, the section being taken on the line -of Fig. 2.1 p l 'SFig. 2 isla side elevation of the saine, partly in section,` the section being taken on tlileline lr-H of Figfl.,v a

Figi' S* is a side elevation, partly broken ing, in which. the bearing cage 'is ,secured'to' the truck bolster,'instead df as 1n Figs. 1

and2, to the. body bolster. of a railway car.

invention is to provide f wherein the formation of the relativelyv Specification of Letters Patent. Patented 01615. 19H19.

Application sied .my 1o, 191e. serial No. 244,245. l

being taken on the line IV+lVof Fig; 3.

In the accompanying drawings;-` vaside bearingembodying my invention is shown operatively mounted between opposite "end portions Qvand 3 of the truck and'bod'y bol- 4 sters of a railway cara The bearing has a bottom bearing plate lon the truck bolster 2 and a top bearing plate 5 on the body bolster 3 with an interposed anti-friction roller l 6 between the plates 4 and 5. The roller-6, which is annular in cross section, isloosely mounted within the housing or cage 7 of the bearing, and is arranged to roll onthe" con-- tiguous flat, plane surfaces of thelbea'ringf-@l plates 4 and 5. Being circular in -crosssection, lthe roller 6 is balanced and willl'liot roll or move, until 'acted uponbysomeout-- side Yforce. y

'opposite sides of the cage, and the top beyars mgv platey 5 on the interior of'the'cagefis.`

secured to the upper side wall 11 'of the' cage 7. The lower side 12 of this cage 7 is iopen and has no wall and the roller 6 piojects downwardly through the open side ofthev 'cage into engagement with thebearing" snr-i?"x face of thebottoin bearing plate 4,

fasteneddirectly to the truck bolster.v` v if 'Extending- .through eachside Wallj'8- of the cage'ofFigs. land 2 is an opening'or slot 13 with the lower edge 14 of theslot'lA inclined from/both ends toward the middle of its length', the `proclivous edges Hinten seating a s ho'rt intermediate section 114e,- which ishorizontal.` `The slots inf'f the opposite sidewalls 8,l 8 are in! horizontal il alineme'nt and extending through-these slots and through the opening' 15 inthe hollow v'roller 6 isa cylindrical gravity return roller or pin 16, this pin having a head 17.011 one which form abutments on the exteriorof the cage 7- and `add weight to the gravity roller pin 16. The'collar 18 is detachably secured on the 'roller 16 by means of a cotter pin y19,

-end and a removable collar 18 onthe other,

which extends through a transverse-'hole in 'f the end of the gravity roller`v` vBy reference to Figs. l and 2, it will be seen that the gravity roller 16 engages with the cylindrical surface of the hole 15 in the annular roller 6 and with the lower edge-14 ot the slots t3 so that when rela-tive swiveling movement of the bolsters 2 and l occurs and the balanced'roller t3 is moved thereby, the gravity ietlgyirn roller 1G is caused to ride upward on tliie inclined edges ,ll ot' the slots lil. 1t also will be readily seen that when the bolster 3 lit'ts clear of the roller (i, that the gravity return roller 1'2 will roll down the inclined edges l-t ot the slots t3 by lgravity, and will automatically engage with and return the bearing roller t5 into its central position, (that shown in t'ull lines iii Figs.

i l and '22 of the drawings).

lt will be obvious that by reversing the, angle ot inclination ot' the slots 1:3 in the side walls S of the cage ot Figs. l and i that theA cage can be fastened tothe truck bolster instead ot to the body bolster Y. as shown, and

the bearing thereby made applicable tot' use as a truck bearing instead ot' a body bearing. In the modified construction ot' Figs, 3 and l, the bearing is operatively mounted between end portions 2 and :l ot the truck bolster and body bolster and has-a bottom bearing plate t and top bearing plate 5 with an annular, balanced roller t between the contiguous wtarin'gsurfaces ot the plates 4. and 5. i

llvlien the travel or relative swiveling' iiiovelneiit ot' the bolsters L and 2* is great enough. the roller t3 preferably will be in the .t'orni of a hollow truncated cone and the included angle. between the wearing 'taees ot' the bearingiplates -l and 5 will he the same as that o'l such tapering, anti-trici ion rolleig' as shown in lt`igs. Il and -l.

The cage. T ot this bearing is secured by the flanges 10, 1t) on thel sides-thereof to the truck bolster 2, instead ot'l (as in. Figs. l and to the body bolster I. and the bottom bearing plate Jf'is 'tasteneih on theinterior got' the cage` to the wall toi'iiiing` the, lower side l2 ot .this cage. The upper side ll ol this cageI has no wall7 the roller t3 proji-eting upwardly above the cage, iii position to be operatively engaged by the wearing surt'aeeI oiu the top bearing plate Obviously both the upper side ll and ther` lower side. 4l2 olC the cages in either torni el' side. bearing may be made open instead ol only one as shown` in such case both bearing plates Vt and 5 being fastened directly to the, holsters 2 and 3.

lInstead ot having proclivous slots til extending through iie side walls H. S ot' the bearing- (like those shown in Figs. l 'and 2), the, sidel walls S, S of the bearing ol' Figs. i and 4 have recessed .slots lC-l which extend outwardly from the, inner surtaces ot the, vertical Side Walls S. (See Fig. t). The lower edges Het the recessc t are in elined trom thel outer ends toward the middle ot the length thereof and intersect. with a horizontal section ll thereot.. in the same manner as in Figs. l and A cylindrical gravity. roller or pin itl extends through the hollow roller t5 ot Figs. 25 and l and its ends extend loosely into the opposite .recessed slots 13 in the side walls S, S. A hole 20 vlin one side wall bprovides means for the insertion ot' the pin lo withintlie cage and roller iii assembling the parts, this hole being located at some distance above the axis ot' the piii'lti when in central position on the wearing surt'ace ot' the bearing plate l. (See Fig. 3). 0n account of havinga closed lower side or bottom l2 the end walls t), il ai'e provided with openings 2l. and the side wallsI S with openings L which permit dirt, snow` ice and similar toi-eign iiiateiials t'rom accumulating within the cagei" and-eti the winning, surface otbtlte bearing' plate -l.

.body bolster l moves downwardly into engagement with the roller t3 and the tr'iiclt swivels under the air. tbe roller ti travels on the bottom bearing plate l toward the one end or the other ot the bearing plates tt'ioward or into the position shown dotted iii Figs. '2 and -tl and atl'oids a b'ea'iing tor the body bolster which is substaiitiztllly without friction.

In traveling toward the end ot the bearing plateV t, the roller t3 engages the. gravity roller or piu lt and moves it toward one end o't" the slots 13 in the side walls ot' the cage i', the inclined lower edge ll. ot the slots causing the gravity pin lt to lit't or roll upwardly. this movement ot the pin also being etlected without. any substantial amount of friction. A As soon as the body bolster 3 lifts and the' roller t5 is thereby treed the pin rolls baeltwardly down the inclined lower edges l-t ot the slots ll and by engagement. with the'balanced, anti-friction roller ti, moves` it back until in substantially its central posi tion. ln this way the roller t3 is always atit'omatically moved back into Central position whenever the Iar right-s itseljt' and pro- 'vides the usual clearance ,in the sidei bearings and the roller t5 remains in its central position to again receive the load ot the body bolster and to roll either to the right or the lett, depending upon the direction et? waysifetfurn to the mathematicalCenter ot" the bearing plate, which results in the wear y I ,l and l are cleared and Bev making the edges 14 horizoiineedles being loosely mounted in the cage with only a frlctional engagement between them, the

- considerable amountv of jolting.` to' which 4irailway cars are subjected will cause the r-.rller 6 to turn Slightly from time to time and in this way present different portions of its periphery'to the. bearing plate, so'that .wear -in spotswon the roller and` bearing plates is avoidedand overcome. 5; Withfside-bearings embodying the novel features ofmy invention as shown the bal-k anced. roller has a rolling contact with the wearing faces of the, bearing plates-and having a di'erentialmovement, the travel or I bodily movement is very short compared to the swiveling movement of the truck and fbody holsters of the car. The balanced v'roller of Figs. 3 and 4 may be cylindrical instead of a truncatedl cone as shown and the gravity roller or pinalso may be cylindrical when found necessary or.` desirable.- @My improved side bearing is of simple construction, is strongi and durable and is easily and cheaply constructed and the wearing parts `are readily made from stock sizes of merchant steel.

The bearing roller is secured to the cage in a simple manner which enables the roller to turn freely and present different surfaces to contact with the bearing plates and the friction is reduced to a minimum.

Many modifications, which `will suggest themselves to those skilled in the art, may be made in the detailed construction of the side bearings within the scope of the ap'` pended claims.

4lll/'hat I claim is:

1. An anti-friction side bearing comprising upper and lower bearing plates, an interposed circular roller, vertical walls associated wi-t` one of said bearing plates and provided-wi h guides`inclined from both ends toward the center thereof, and afgravity returning member loosely engaging said roller and said guides and v'arrangetl to return said roller to near the central position.

9. An anti-friction side bearingmompnising upper and lower bearing plates, 1aninterposed circular roller, side walls associated with one of said bearing plates and -provided with guides -inclined from both ends toward the center thereof, and a weighted centeringimember operatively engaging saidf guides und loosely engaging said roller.

3. An anti-friction side bearing comprising upper and lower bearing plates, an interposed annular roller, forming a hollow anti-friction member, side walls associated with one of said bearing plates and provided v'f'ith grooves inclined from 'both ends :to .the cents, and a gravity return roller roller into its central position anda cane operatively engaging said guides and extending through said hollow roller. 4. An antii1iction side bearing comprising upper and lowerbearing plates, an intei-posed annular roller forming a hollow circular anti-friction member, side walls associa-ted with one ofsaid bearing pla-tes and provided with grooves` inclined from both ends ltoward the center, and a weighted guide pin projecting through the roller and through said grooves and provided 'with abutments at both ends outsideof-said side walls. v7

5.. An anti-friction side bearing .compris ing upper and lower bearing plates, an interposed annular roller 'forming a hollow circular anti-friction member, side walls asl sociated with one of saidvlbearing plates and provided with guides inclined from both ends pto the center,l anda circular roller returning member vin rolling engagement with said guides and loosely7 engaging said roller from the inside. i yv I 6. An anti-friction side bearing' compris ing upper and lower bearing plates, an interposed hollow circular roller forming an annular antiiriction member, a cage hav"- ing side walls associated with one of 'said bearing plates and provided with guide slots inclined from both ends towardI the i center, and a circular pin extending thrdugli said hollow roller and through said slots and in rolling' engagement with said slots and 'provided at its ends exteriorly of the side walls withenlargenients.

7. An anti-friction side bearing compris-3n ing upper and lower bearing plates, an in terposed balanced roller adapted to opera tively engage with Ysaid bearing plates, a" gravity return roller adapted to engage a V"th and automatically maintain the balanced s. in which said rollers are operatively mounted.

8. An anti-friction side bearing comprising upper and lower bearing plates, an an: nular balanced rel-ler between said Aing plates, a gravity return roller extending through the annular roller, acage-in which siaid rollers are operatively mounted and means on the side walls of the cage engag- 'ing with the gravity return roller and coacting therewith to maintain the annular .roller-f in its central position.

plates, l tical walls associated with the lower bearing plate and provided with guides inclined from both ends to the center, and a roller returning member loosely engznqing,` said roller and said guides and arranged by 4gravity to return said roller to near the central position.

11. In an anti-friction side bearing, the

combination with upper and lower bearing plates, of an interposed circular roller` side Iwalls associated with the lower bearing' plate and provided with guides inclined from both ends to the center, and a weightl of an interposed :ircular roller, ver4 walls associated with the lower bearing plate and provided with guides inclinedl from both ends to the center, and a circular roller-returning member in rolling engagement with said guides and loosely engaging-said roller from the inside.

.13, In ana-nti-friction side bearilw', the combination of a housing arranged for at'- tachment to the truck bolster and provided with a bearing' surface and openings at the level of said surface, a circular roller, the side walls, of said housing being provided with guides inclined frolnboth ends to the center, and va roller-returning member loosely engaging said roller and said `guides and arranged by gravity to return said roller to near tliecentral position.

In testimony whereof I have hereunto set my hand.'

ALBERT W. CALVIN.,

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