US1988339A - Railway car truck - Google Patents

Description

Jan. 15; 1935.

J. A. SHAFER RAILWAY CAR TRUCK Filed June 24, 1931 4 Sheets-Sheet 1 Jan. 15, 1935. J. A. SHAFER RAILWAY CAR TRUCK Filed June 24, 1931 4 Sheets-Sheet 2 aw'uewboz Jkme 's vi -15W! Jan. 15, 1935. J. A. SHAFER 1,983,339

RAILWAY CAR TRUCK Filed June 24, 1951 4 sheets-Sheet 3 Jan. 15, 1935. J A. HAFER 1,988,339

RAILWAY CAR TRUCK Filed June 24, 1931 4 Sheets-Shet 4 awvamtou Patented Jan. 15, 1935 l-fl t UNITED STATES VPATENTLTVOFFICEY James A. Shafer, East Cleveland, Ohio, assignor to National Malleable and Steel Castings Company, Cleveland, Ohio, a corporation of Ohio Application June 24, 1931, SerialNo. 546,488

I 1401mm. (01.105-220) This invention relates to railway car trucks ster extending into the opening 6 is hollow and and more particularly to the journal boxes and receivesa pair of springs arranged longitudinally side frames thereof. The invention provides an of the bolster and resting upon the top of the improved side frame and journal box construction shelf 13,; one; of said springsbeing shownat 5 wherein the parts are-maintained effectively in 18 in Fig.1.- The bolster is thus supported both. 5;

3 0. reception of an end of the-bolster 7. At its oppothe journal box and the side frame;

assembled relation and at the same time removal by the springs 10, 11 below the shelf 13 and by of the, side frame may be accomplished .with; the springs above said shelf." The above demarked facility. Through my invention the side scribed relationship between bolster the bolster frame is freed for withdrawal merely by raising supporting springs, and the side frame is.;the

of the bolster and it is. unnecessary to raise the same as in my pending application above identil0v side frame to effect its removal. A further feafied. I I I I ture of the invention resides in provision for the I providethe side frame5 at eachcnd thereof, minimizing of thrusts between the journal box with a pair of transverse grooves 19, 20-for;reand the journal in responserto outwardthrusts ceiving corresponding ribs 21, 22 extendingfrom l5 of the side frame. other features of .the inventhe associated journalbox. The grooves-20 are tion will ,be hereinafter described and claimed. shown provided in ears 23yprojecting fromthe In the accompanyingv drawings; tensionmembers of theside frame, The rib Fig. 1 is a side elevational view with portions 21 on each journal box is shown positioned on broken away, of a car truck embodying my inthe upper corner-thereof furthest from the'side vention. 1 frame opening-6, while'therib 22 projects from 0.;

" Fig. 2 is an enlarged plan view showingan end the sideof the journal box adjacent the ear 23 portion of the side frame: and its relation to the on the associated tension member:14. 1 Clearance associated journal box. I is provided, as shown, betweeneach of'th'exribs'.

Fig. 3 is a longitudinal vertical sectional view 21, 22 and the surfaces .of the respective-grooves on line III-II[ of Fig.2, and. Y 19, 20, cooperating therewith, and in addition-52 'Fig. 4. is a transverse vertical sectional View said ribs are curved transversely of the side'frameli on line IV-IV of Fig. 3., (as indicated at 21' and 22 in Figs. Zand 3;"

Referring to the drawings there is; shown a. the cooperating groove surfaces being. indicated side frame 5 provided with a window 6 for the: at 19'', 20') to provide for lateral angling between site ends the side frame engages the journal boxes The journal boxes are shown as of the roller 8, 8 as hereinafter specifically described. It will. bearing type disclosed'in the pending application of vcourse, be understood that a similar side frame of Albert 0. iBuckius, Serial No; 332,346,- filed is provided on the other side of the car truck for January 14,1929. Thuseach joumalbox comreceiving the opposite, end of the bolster 71 and. prises a-housing 8 having a continuous inner oyl cooperating with journal boxes on said other side lindrical surface 25 forming a race for roller in the same way as the side frame 5. However, bearings 26, two setsof whichareshown. A cya consideration of but one of the side frames and: lindrical member 2'7 .surrounding the axle or*jourthe parts associated therewith is sufficient for nal 28 forms an inner race fortheroller bearings; an understanding of my'invention I Cages or retaining rings 29 for said'bearin'gs are The sideframe 5 is ofthe ty'peshown in my shown positioned between theinner and::outer pending application Serial No. 459,480, filed June races referred to. Surrounding the ax1e 28 and 6, 1930, having below the window opening 6 a secured-to the housing 8-is apIate 30 formingthe: portion designated generally by the numeral 9, rear portion .of' the journalrbox. In-the bottom' 1 in which springs 10, 11 arranged longitudinally, portion of the housing there is provided an oil of the side frame are adapted to-be seated/and reservoir .31. A thrust block 32, preferably of.

housed. Said portion 9 comprises a bottom shelf bronze or similar material, cooperates with the 12, a top flange or she1f13,.and sidewalls confront portion of the journal box housing; said necting said bottom and top shelves, said side block cooperating with the outer cage members walls merging into the side walls of the channel 29 to assist in holding. the roller bearings in" shaped tension members 14 ofthe side frame. place. The housing 8' is counterboredat 33"to'. The bolster '7 is provided with lugs 15 which ex-, receive;the-fiange 34 of the thrust block. At itstend downwardly through openings 16 in the outer face 35 said'thrust blockbearsagainst the; v shelf 13 and rest upon springcapsl'l on the reinner face of the cover plate 36, while theinner x spectivespringslo, 11.. Also,the end'of, the bol-,, face 37 of 'saidblock is..adaptedgto bear, against. I

the end face 38 of the axle for transmitting thrusts thereto. 'Block 32 also has a semi-circular projection 39 adapted to seat in a recess 40 behind the annular shoulder or flange 41 on the end of the axle. The cover 36 may be removably secured to the housing 8 by volts 42. Extending through a staple 43 on the inside of the cover 36 is a lubricating wick 44, which (projects 'into a slot or central recess inthe thrust block. The cover 36 is also provided with a recess. 45rsurrounding the top and sides of the wick and main taining the latter in its proper relation to the cover. These various features involved in the internal construction of thejourrlal box are fully thereof with a recess 46 for there'ception of the wear plate 47 upon which the adjacentjend of the side frame rests. The wear plate 47 is crowned transversely, as-at 48, to provide for a rocking bearing for theside frame. Projecting upwardly from the wearplate 47 is a lug 49 cooperating with the inner side'of thefadjacent end portion of the side frame 'to provide athrust bearing therefor. The thrust bearing surface 50 'of said lug is curvedas indicated in Fig. 2. 'Iprovide such thrust lug at the inner sideonly of the side the truck is of course restricted by' the engage mentof the bolster lugs 15. The arrangement above described, whereinthe only'thrust projection on the journal box for engagementwith the side frame is at the inner side ofthe latter, reduces' to a minimum-thethrust between the respective flanges 39, 41 of-the thrust-block 32 and journal 28when the car body shiftslateral ly, as in rounding curves. Such lateral shifting of the car body, of course, carrieswith it the bolster and the side frames engaged therewith.

It will be seen that the thrust on the end flange 39 of the thrust bearing32 in response tooutward shifting of the journal boxrwith the side frame is limited to an amount corresponding to" the frictional resistance between the side frame and the journal box. In other words, when the side frame movesoutwardlyfand, due to the frictional engagement between said side frame and the journal box, the flange 39 of the journalbox thrustlugl 32 is brought into engagement with the annular flange '41 .of the axle 28, the side frame is free to move further outwardly. over the journal 'box' and no greater thrust occurs between-said flanges 39. and 41 than is commensurate' with the frictionbetween the journalbox and the side frame. This thrustfitwill be apparent, is decidedly less than would 'occur bei tween said flanges if the .side, frame were restricted from outwardmo'vementby anv outer lug'on the wear plate 47 or other portion of thejournal box. During lateral shifting of the car body and movement of one of the side frames outward-" ly;-i. e., away from the inner'thrust lugs 49 on its associated journal boxes, the opposite side "frame is, of' cou'rse,engaging the inner thrust' the ends of the axles in the journal boxes en gaged by said opposite side frame; and no'more than a minor portion of the thrust is taken up by the flanges 39 of the journal boxes engaged by the first mentioned side frame, there being, as above pointed out, no thrust lugs exterior of the side frame on the journal boxes.

Brake hangers 51 are provided on the side frame for connection in the usual way to the customary brake rigging (not shown) .Wheh it is desired to remove either one, of the side frames of my improved truck, it is merely necessary after disconnecting the brake rigging from the hangers 51, to raise the bolster sufliciently to disengage the projections 15 from the openingslfi, whereupon the side frame may be readily withdrawn 'by simply moving the same outwardly over theassociated journal boxes. Re-

moval of. the sideframe maythus be effected without raising the side frame, as is necessary in arrangements where thrust lugs exterior of the side frame are provided on the journal boxes.

It will be' noted" that (as in myabove-specified pending application. No. 459,480, are well as in my application 'Serial' No. 347,262, filed March: 15,1929) the shelf 13 'ofthe side frame, through which the bolster lugs- 15 extend, is: substantially in the horizontal plane that passes through the: centersof the journals in the journal boxes 8:

Thrusts of the bolster laterally of the side-frame are ir'npa'rtedto the latter both through the en-:

gagement of portions 7 of'the bolsterwith the side frame columns 6 at the'sides ofthe window 1 opening 6 and through the engagement of the lugs 15 with the side fram'e shelf portion 13; Similarly, longitudinal thrusts are applied by the bolster to thesideframe through engagement withthe columns and with' the shelf 13. Due to the divi' sion of bolster thrusts between the columns 6' and shelf 13 there is 'a'reduction of the stresses applied to the columns whether fromlateral thrusts of the bolster as in rounding curves or from lon- I gitudinal thrusts as when the brakes are applied.

It should further behoted that in my present invention the journal box ribs 22*and'the cooperating side irame' grooves-20 are'positioned substantially in the aforesaid horizontal plane pass-' lugs or ribs22 and grooves 20' substantially in the horizontal plane passing through the centers of the journalsresultsin aconnection between the journal box and side frame which connection is ofmaximum effectiveness and at the same box, the latter would have more of a tendency to rotate said lug out of engagement'with the recess20;-"whereas if said lug were moved below the *position 'shownyfit would be necessary to'extend said lug andthe'cooperating'member 23,

due to the sloping of the tension member 14, with resultant increase in the weight of the parts.

With thelugs and groovesaforesaid in the position shown in quick wheel change connection of maximum strength and efficiency is provided.

Matter shown and described but not claimed herein isclaimed in y applications hereinbef ore mentioned. r

The terms and expressions which I have e'm-' ployed are used 'asterms of description and not of limitation, and I have no intention, in'the use.

etO

portions thereof, but recognize thatvarious modifi'cations are possible within the Q1 vention claimed,

Z 1 In acar-truclg-aside'frame;ablsteniriter engaging means therebetween comprising a projection on one ofsaid members extending into an opening in the other, journal boxes slidably engaged by'the respective-ends of said side frame,

each of said journal boxes-providing for unob structed outwardmovement'bf said side frame thereo'ver and having a thrust projection ent gageable'by the inner side of I said frame, said journal boxes and side frame being furtherso constructed-'and'arranged as to enable vertical and lateral angling to take place therebetween.

2. In a car truck, a side frame, a journal box slidably engaged by an end of said side frame, said journal box having on the inside thereof a thrust element and the associated journal having an end flange positioned outwardly of said element and engageable thereby for receiving outward thrusts of said box on its exterior providing for unobstructed outward movement of the side frame with respect to said box and having on its exterior a thrust projection engageable by the inner side of said side frame.

3. In a car truck, a side frame, a journal box slidably engaged by an end of said side frame, said journal box having on the inside thereof a thrust element and the associated journal having an end flange positioned outwardly of said element and engageable thereby for receiving outward thrusts of said box on its exterior providing for unobstructed outward movement of the side frame with respect to said box and having on its exterior a thrust projection engageable by the inner side of said side frame, the end of said journal in said box cooperating with a portion of said box for receiving thrusts imparted by the side frame to the box through engagement with said projection. 1

4. In a car truck, a journal box, a side frame slidably engaging said box, said box having on the inside thereof a thrust block, a portion of which is adapted to engage the end of the associated journal for transmitting thrusts thereto in one direction, said block having a flange and the journal having a cooperating flange engageable thereby for receiving thrusts in the opposite direction, said box on its exterior providing for unobstructed movement of the side frame outwardly of said box and having on its exterior a thrust projection engageable by the inner side of said side frame.

5. In a car truck, a journal box receiving a journal therein, a side frame slidably engaging said box, roller bearings between said box and said journal, a thrust block within said box cooperating with said bearings for maintaining the same in position'and having a portion adapted to engage the end of the associated journal for transmitting thrusts thereto in one direction, said block having a flange and the journal having a cooperating flange engageable thereby for receiving thrusts in the opposite direction, said box on its exterior providing for unobstructed movement of the side frame outwardly of said box and having on its exterior a thrust projection engageable by the inner side of said side frame.

6. In a car truck, a side frame, a bolster engaged therewith, journal boxes upon which the ends of said side frame are slidably mounted,

engaging meansbetween said bolster: and? side I frame arranged to provide fo'r disconnection iof the side frame fronrthe bolster-:by'raisingof the latter; the portions -f ':'said=j ournal boxes. cooperatingi with the side ,frame :providing; for: unob structed outwardnmqvement of; :the side frame: n l n e i tqbelmmov dfq w ne r is-.

ns f abQ t 1it Q r i n s n of the side trainer:

7, In a-car ,truckaa; sidefframe including a ten sion ,element,. a' journal :box upon, which, one end of sa'i'd side frameifs'm 'u'n'te'd; ajconnection ,be-

tw en an uppercoi rier of s journal box and the I end of said side; names Qf" m r$ a j receivedir'r said :groove-fand a' I fl: and groove connection between aside i "of said journal box and" comprising a groove said tensionelement, said rib and groove connections being so constructed and arranged as to enable lateral and vertical angling to take place between said journal box and said side frame.

8. In a car truck, a side frame including a tension element, a journal box upon which one end of said side frame is mounted, a connection between an upper corner of said journal box and the end of said side frame and comprising a groove in one of said members and a rib on the other received in said groove, a rib and groove connection between a side of said journal box and said tension element, the journal box on its top providing for unobstructed outward movement of the side frame with respect to the journal box and havingon said top a thrust projection engageable by the inner side of said side frame.

9. In a car truck, a side frame including a tension element, a journal box upon which one end of said side frame is mounted, a connection between an upper corner of said journal box and the end of said side frame, and a connection between a side of said journal box and said tension element, said connections being constructed and arranged to provide for unobstructed transverse movement of the side frame over the journal box into assembled relation thereto while the journal box is assembled with its axle, and to provide for vertical and lateral angling between said journal box and said side frame.

10. In a car truck, a side frame including a tension element, a joural box having a journal therein, one end of said side frame being mounted on said journal box, a connection between said tension member and said journal box, said side frame having a shelf portion provided with an opening, a bolster having a projection extending into said opening, said side frame shelf and said connection between the journal box and tension member being substantially in a horizontal plane passing through the center of said journal.

11. In a car truck, a side frame includinga tension element, said side frame having a shelf portion provided with an opening, a bolster having a projection extending into said opening, a journal box for receiving the journal of a Wheel of said truck, one end ofsaid side frame being mounted on said journal box, and a quick wheel change connection between said journal box and the tension element of said side frame and comprising a projection on one of said members in slidable engagement with a groove on the other, said side frame shelf and said connection being substantially in a horizontal plane passing through the center of said journal.

12.'In a car truck, a side frame including a tension element, a journal box for receiving the journal of a wheel of said truck, one end of said sideframe being mountedonqsaiddournal box,

13, In a'car truck, a side frame including a tension 'element; a Journal box upon whicli one end: of 'sai'djside frame 'is mounted, a" laterally siidable' connection between an upper corner of said journal box'and the end or said sideifrairie'f and a laterally; slidable" onnection between a' side of said journal box and said tension element,

the I last; mentioned conneetion being substantially in; a horizontal plane passing tnrough'the,

center oia journaLin said box; a

;- 14. In a cantruck, a side frame including a li em nt; .a' Journ bo v1 m wh ne end of said sidevframe is mounted, a connection between an upper corner of said journalbox and vt e. and of aid-15m f am d? r and groove connegtion between a side of said journalbox and said tension element, said connectionsv being constructed and arranged to provide for assembling said sideframe and journal box by a movement I of theside frame tx ansv ersely of thejournal box,

while the. journal box is assembled with its axle,

and to provide for relative vertical and. lateral anglingbetween said side frame and said joumal box.

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