US1189636A

US1189636A - Truck side frame and journal-box.

Info

Publication number: US1189636A
Application number: US5940315A
Authority: US
Inventors: Edgar Webster Summers
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-11-03
Filing date: 1915-11-03
Publication date: 1916-07-04
Anticipated expiration: 1933-07-04

Description

E.'W.. S'UMMERS.

TRUCK SIDE FRAME AND JOURNAL B0X.4

.APPLICATION FILED NOV. 3, |915.

wm 1. 4... U m, m T TJ n m m i uw NN .MN www 1 @.w w fr M.. p K M 6 k 6.., m 1 w il? C E. W. SUMMERS.

TRUCK SIDE FRAME AND JOURNAL BOX.

.l APPLCTlON FILED NOV.3,1915 l 3,189,536. Paend July i wlnessss To @ZZ Whomy it 'may Concern EDGAR WEBSTER SUMMEBS, OF IPICLTSIBU'I'LGrH, PENNSYLVANIA.

` TRUCK sinn FRAME ANnJoURNAL-Box.

risorse.

` Beit known that l', 'EDGAR XV. SUMMERS; a' resident of' Pittsburgh, 'in the county of Alleghenyand State 'of Pennsylvaniiuh'aye` invented 'a new anduseful Improvement in' 'Truck Side I `raine`s and Journalfloxes, et;

which the following is a'specification.'

This invention relates tside frames for railway car trucks. and -journal boxes -One' object 'of the invention iste provide arailway car truck yside traine'. oi the archi bar type and a journal box so constructed that (the neutral` axes or centers of gravity 'of the tension andcompression members of they truckl side frame intersect vertically over the :iiiifs of rotation-'of the axle and as close down to' ltliefsaine as possible. e

i Another object is to provide an emergency connectionbetween the journal box and side iraineso larranged as to permit -a-'wide bear.-

o't' the side fr anie on'the'journal box, and,

. aft' theysainetinieinot interfere with tlieat-I taohi'nent andv proper opening of' and arrangementl of parts Another object of the invention ,is to'prof` d bentfdownwardly -so as to lie at 'the saine g angle from the vertical as the' inclined poifA vide, such construction offolumi postscom necting 'thevcoiiipression and` teii'sionlineni` bers as tov prevent bendingk stresses 1n the teilsionmember due to the upward lift of the bowed or arched compression member.

' The iniiention comprises the construction hereinafter described and claimed. v1 d f In the accompanyingdrawings; Eigure l is in part a side elevationfafnd in paitaflon- .gitiidin'al-` vertical" section of a truck side.

frameei'nbodying the invention, showing the `iouriial box'attached'thei'eto' V*lf-ig.. 2 is in parta yplan viera' oi the saine and in parta horizontal section on the line 2-2, Fig/1;

Fig. l3 is a'veitical transverse section'on Athe line l-3, Fig'. l g, Fig. 4 is a plan viewpf'the Fig. er; Fig. f is a' verticaltransverse sectionl 'pedestalfjiw'lmeinber 'Itig'iA isjin part an' end-elevation` of thA` saine'and 1n part a verticalfsectioiiofthe' saine 'on'tlie line .5L-5,

' foffthesame-ontheline 6-.-6, lFig-5; Fig.. 7 is asimilar.. s ionfontth'e linefY-Y, Eig. 5'.; 5F Sis-a. pl M view off the journal boxvgcFig.. :9, is averit'ical longitudinal sectionthrough the same von tlie'lline 9--9, Figf; Fig 1() is eleyation the inner end; of the journal lbox.; E igtll is al transversel vertical secs tionythizonghlthe same onv the line' 1'1"-711',

Specification of Letters Patent.

Patented July 4; 41916,

Appncation meamvembr, 1915.` seriaiNo. 59,403.

The truck side frame illustrated is of the 'arch bar type liaving an upwardly boivedor arched compression member l and a downwardly.bowedl tension member 2, the latter khaving its central portion, as at 3, formed on theV arc of a circle or catenary curve, and

. withthe endportions extending from said curved' portion as true tangents. As illustrated, the tension and compression' mem- 65 bers are formed. 0frolled ianged sections, i' thespecific sections illustrated being I-beams placed withltlieir webs :horizontal and ltheir tions of saidtension and coinpressioninem- 8.0`

bers, beyond the point-8 of' intersection of their neutral axes yor centers of gravity,` are tu'se engae,V as' shown. in Fig. `l.` Fitting in this. angle .is thepedestal jaw member 10 which. comprises a pair' of 'web portions 1l 90, lo ppo'siiely inclined relatively to each other land itting" against. the .lower faces of the l of thev tension member 2 on opposite Sides of the lpoi/pnt of intersection of 'the neutral axes'of the tension and compression 95 I 'compression members together at their'outer OO endsand those which secure the gusset menir bers 6 tothe tension member, also serve the .purpose of securingthe pedestal 'jaw` memberilO to .the rside trame. The Web'membei Y lfl toward'thecenterjof the truck side frame :105

hasan extension 1 2 for 'receiving one of the rivets which is .used'to secure the gusset Amember 6 to the ytension membert The web portionsll of thePinember l() are provided "on vboth 'sides With vgrooves li'jor-receiving'.r 110 "the: downwardly vextending"flanges" of the tension member, outside of these are the i Y vertical webs or tianges 14 extending upwardly and embracing the side faces of the side frame and beaded at their u )per edges, as at 15, for struigth. These anges also extend downwardly and form the pedestal jaws 1t' which are of material width Sidewise of the frame, and which flare or diverge downwardly, as shown in Figsl and 5, and which are adapted to receive the journal box 17, as shown. The pedestal jaws 16 are symmetrically arranged with reference to the vertical transverse plane of the pedestal jaw men'iber, and as the latter fits up Vin the angle formed on the lower face of `the side frame, it necessarily follows that the center of rotation ofthe axle 18 is directly vertically below the point of intersection 8 of the centers ot gravity of the tension and eompression members of the side frame.

The journal box 17 at its central zone has the upper portion of its side walls beveled upwardly and inwardly, as shown at 19, on an angle corresponding to the inclination or flare of the pedestal jaws, as a result of which the journal box fits high up into the pedestal jaw member and `thus reduces to a minimum the vertical distance between the axis of rotation of the axle and thepoint of intersection of the neutral axes ot' the tension and compression members.

At the saine time such beveled oil portions of the side wall do not interfere in any way with the dimensions of the box to receive the ot' the wheel hub, the box is provided with standard Master Car Builders wedge 2() and brass 21. 'The box on its interior is provided with the usual lugs 22 for holding the brass` and the eiiicieiicy of this lug is not interfered with by lieveling ofi the sidewalls toward the top, as these bevels merely rcmove metal from a place where it performs no useful function., i

Outside or forwardly of the central beveled portions ltf the journal box is of substantially square contour at the top, as shown at 524, and is provided with the usual lugs 25 for receiving a4 lid 26 of the Master (lar Builders type. inwardly of the bev eled portion l) the top of the box is also of square eontoui, as shown at 27, and is provided with the usual dust guard pocket 2H. To prevent breakage of the inner wall 2S) ot the dust guard pocket by endwise blows tion does not interfere with the proper braced at their central portions by bracing,

Webs 31. v.

To provlde an emergencyconnection between the journal box and truck side frame` and prevent the box from displacement in case of wrecks or other emer 7.0 'i encies, the,"

pedestal jaw member is provi ed with of pair of horizontal perforated ears or 111182' pan of vertical perforated cars or lugs 31, which pairs of ears-or lugs receive a connecting pin`35, which, however, need have il only a relatively loose tit and serves n0 purpose other than tomwprevent the accidental displacement of the journal box relative to the side frame. The ears or lugs 33 and v34 are spaced wide apart, as shown in Figs. 2 and 8, much farther apart than the lugs of the Vlid 26, so that this emergency connecopening of the lid, und at the saine timeV allows of :livery broad side frame bearing on the journal box. gcncy connections have been provided between the side frame and 'the journal box, it has' been by means of lugs located utV the center of the Journal box, in exactly the same longitudinal plane as Vthe lid lugs, which has required a narrow bearing of the truck side fraaie on the journal box in order to Heretofore where such emer`` provide siitlicicnt space between the lid lugs and the emergenc)7 securing lugs to permit the lid to open. By spacing the emergency securing lugs apart laterally of the box, as in the present design, they do not interfere with the proper opening of thc -liil and at the same time permit of a `vcry wide bearing ot' the side frame on the journal box, which is of material importance, as the strains are thus distributed over a much wider arca or zone on the journali'box as compared with the prior constructions.

By having the journal box beveled ofi' at its central zone and fitting up bctweenthe flaring pedestal jaws, it enables the cndof lll) the side frame to be brought low down rela` tive to thc axle` thus increasing the stability and avoiding objectionable height of the truck side frame.

The compression and tension members at `their central portions are `united bv a collia umn post iucmbcr which comprises in a sin-` 'i gie integral 'casting thc vertical column post portions 37,the bottoni spring scat portion 3H and a top i`-oniiccting portion 3.0. The top connecting,"poi-tion 39 fits against the web ot' thc compression member and is secured thereto b v rivcisatl. By having an integral 4council-ting portion'it). all blows of the bol ster longitudinally ot' thc trucks are rcsisted by all. of the rivets 40, no matter in which direction thc blows may take place. The spring seat portion 38 is formed on an are fitting the web of the curved central portion 3 of the tension member and is securedl theretoby rivets 41. l' Spring planlr members 42 are secured to this casting, such as by bolts 43, and the springs 44 rest directlyon Athe bottom, portionj 38. The column post portions 37 are provided with the usual bolster guides 45 and brake hanger 'brackets 46.

In' arch-bar trucks in .which the compression member isbowed or arched upwardly the stresses induced by the load exert a tendency to arch or bow said compression member still further upwardly, as a` result of which thecolumn posts exertaflifting tendency, which with` ordinary constructions is transferredinto the tension member and thence to the spring seat, with the result that there is 4a tendencyto bend or deflect the tension. member upwardly at the points n where the lower ends of the column posts sion stresses'iii the lower face of the tension.

are attached thereto. This induces compi'esmember at these points,.whicl 1 compression stresses neutralize to some extent the tension stresses inl. the member, with tlie'result that the effective area for resisting the tensionstresses is reduced. .Some -forrnsof arch bar truck side A@games have failed at these points due to this tegral with t e column posts, as in thelpresent construction, the upward lift on the posts due -to th tendency ofthe arched com-- pression me'mber t'o bow still further upwardly, is transferred directly to the spring scat, and .does not have to go into the teni sion member at all. As a consequence there is no tendency to. deflect the tension member upwardly at thepoints Where the lower ends of the column posts are attached thereto. This effect is also aided from .the fact that thecentral portion of the tension member is on the arc of a circle and the in. clined end portions are tangent thereto..

Theresult of the structure is that there are not' opposed neutralizing stresses in the tension member, but -the entire cross sectional area of the latter is effective to resist the tenjon' stresses and there-is not the danger of allure aSinthe prior'oonstructions.

`W hat I claim is i n 1. -A truckside framejof the arch bar t'ype i comprisin a compression member and a tension. mem er having their end portions secured'together and with their centers of` gravity intersecting, pedestal jaw members secured to said end portions, the jaws of said members converging upwardly, and Ajournal boxes havingiportions of their side walls near the top beveled and inclined upwardly and inwardlyand fitting between said pedestal jaws, whereby the intersection of the centers of gravity-of the side framehmembers are brought vertically over the center of rotation of the axle and close downto the to s of the journal boxes.

2. truck sideIframeof the arch bar type cfiluse. `By forming the seat in' comprising a compression member and a tension member formed of flanged sections placed with their webs horizontal and the flanges vertical and having their end portions formedto bring' the webs into contact and beingsecured together` with their cen- .ters of gravity intersecting, pedestal Ajaw members secured to said end'portions', the jaws of said members converging upwardly, and journal boxes having portions of their side walls at the top beveled upwardly and inwardly and fitting lbetween said pedestal` jaws, whereby the intersection of the ccntersofgravit-y of the side frame members arebrought vertically over the centei' of rotation of the axle and close down to the tops of the journal' boxes.

3. 'A truck side frame of the arch bar type comprising compression and tension membei's united at their ends and having their end portions outside of the point of intersection of their centers of gravity inclined downwardly at an angle corresponding to the inclination of the tension member, a pedestal jaw member fitting in said angle and secured to thel side frame and 'having downwardly' flaring diverging jaws, and a journal box having its -central zone beveled upwardly and inwardly and fitting between said flaringjaw-s, whereby the intersection of; the centers of gravity ofthe side frame members is brought vertically over the center of rotation of the axle and close down to 4 the top of the journal box.

4. A truck side frame of the arch bar type comprising a compression member and a tension member having their end -portions parallel and secured together and havingtheir end portions outside of the point of intersection of the neutral axes ofthe tension and compression members bent downwardly on an' angle corresponding to the inclination of the tensionmembe'r, 'a pedestal jaw member secured in said angle and provided with downwardly flariugfor diverging jaws, and a. journal box having its `central zone inclined upwardly and inwardly' and fitting between said jaws, whereby the intersection of the neutral axes of the tension and compression members is brought vertically over the center of rota-- corresponding to the. inclination of the tensionmember, a pedestal jaw member secured in said angle and provided with downwardly flaring or diverging jaws, and a -jonrnal boxv having its central -zone beveled or inc1ined`upwardly and inwardly and fitting between said ,diverging jaws, whereby the intersection of theneutrall axes of the side frame, members is brought vertically. over the 'Center fof rotation of the axle and clo'sed'own to the top of the jourhal box.'

(i. A truck side' frame ofthe arch barv tjpe provided With pedestal jaws, a journal box fitting between said pedestal jaws, said side frame having a broad Contact length- Awise' of sald journal box, a pair. oi widely spaced horizontal lu'gson said side frame, a pair of' coperatmg vertical lugs on said journal box, and en'iergeney means connecting said lugs.

7. A truck sideframe `of the arch bartype, a pedestal jaw membersecnred to the i ends of said side frame and provided with a pair of widely spaced perforated lugs, a journal box fitting said pedestal jaws and provided with a, pair of coperat-ing perforated lugs, and having 'a broad contact lengthwise thereof with the side frame and a pin connecting said pairs of perforated lugs.

' truck side frame of the arch bar type comprising a compression member and provided with. downwardly Haring or di i'erging pedestal jaws symnietrically arranged relative to the point of intersection of the neutral axes of the tension and coinpression members. Y

lOfA true-lr. side frame of the arch bar type }`rrovided with pedestalA jaws, a journal box fitting Abetween said 'pedestal'jaw a. pair of widely spaced horizontal lugs on said pedestal, a pair of cooperating verticalv lugs on' said journal box, and emergency means connecting saidlngs.

In testimony whereof,l I have hereunto set nl v hand.

EDGAR WEBSTER SUMMERS Wi tnesses GLENN H'. Lemcscnn, C. B. SANDERSON.