US1432929A - Six-wheeled freight truck - Google Patents

Description

E. W. WEBB.

SIX-WHEELED FREIGHT TRUCK. APPLICATION FILED 0CT.13, 1921.

Patented 001;. 24, 19225,

4 SHEETSSHI 1.

. INVENTOR EDWIN W. WEBB E. w. WEBB; SIX-WHEELED FREIGHT TRUCK. APPLICATION FILED OCT. 13, 1921- Patented 001524,].922;

4 SHEETS-SHEET 2.

INVENTOF? ED W/N W. WEBB B Y HIS ATTORNEY E. w. WEBB. SlX-WHEELED FREIGHT TRUCK.

' APPLICATION FILED OCT. 13, 1921- Patented 24 Q 4 SHEETS-SHEET 3- INVENTOI? EDWIN w WEBB BY HIS ATTORNEY E. W. WEBB. SlX-WHEELED FREIGHT TRUCK. APPUCATION FILED ocT.13, 1921.

Patented 001:. 24, 1922.

4 SHEETS-SHEET 00 IN VENTOR EDWIN w. WEBB BY HIS ATTORNEY rear.

Patented @ct.

Lani

arter EDWIN W. WEBB, OFCH'ICAGO, ILLINOIS, ASSIG-NOR TO STANDARD CAR TRUCK COMPANY, A CQBPGEATION OF NEW JERSEY.

SIX- HEELED FREIGHT TRUCK.

Application filed October '13, 1921, Serial No. 507,407.

- T Ml e/10111 may concern,

Be it known that l, Enwm W. Vin-in, a citizen of the 'United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in siy wheeled Freight Trucks; and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. I

My inventionhas for its object to provide an improved six-wheeled car truck, of the general type disclosed in the J. C. 'Barber S. Patents 915,672, of anuary 4t, 1910; 1,036,541, of'riugust 27, 1912; and the lVebb and lValton U. S. Patent 1.215 086 of Feb-.

ruaryjti, 191. and, to this end, my invention consists of the novel devices and combinations ofdevices hereinafter described and pointed outinthe claims. V

My improved truck, herein disclosed, also has in it lateral motion.antisfriction devices, including rollers and bearing plates having bearing surfaces of the contour disclosed in the LeeVV. Barber U. $.Pzrte11t 78%,096, of March 7, 1905; and my said improved structure, herein disclosed, is also ofsuch structure as to permit an independent lateral'motion of the central axle and its wheels and journal boxes independently of the end axles and their wheels and independently of the laterally movable bolster structure or cradle which carries the car body, when the truck is in working position, as in J". Patent 1,347,887, of July 27, 1920.

In respect to its general design, my improvei l truck is most nearly like that disclosed in the said Webb and Walton Patent 1,2l5,()86, but involves certain details of improvement thereover, in respect to the equalizer levers and their connections to the radical feature of novelty'over anything dis closed in the above identified prior patents or theentire prior art, so far as known to me, towitz theembodnnentof a bolster structure or cradle, composed of elements so 3. Barber horizontal section articulated as to permit of a limited angular motion of the central or center bearing bolster relative tothe two end bolsters from which said central bolster is supported, thereby giving 'a flexibilityto the cradle members relative to each other and relative to the sine frames of the truck, and which said flexibility better enables the truck to adapt itself to its load, under the varying conditions found in the service, due to the curves, irregularities of the roadbed and other causes.

The desirability of sixwheeled freight trucks for adaptation to heavy capacity cars, required under modern railway practice,i's now well understood and is emphasized in several of the prior patents, above identified, and the same prior patents make clear the .necessity of a short wheel-base, towit: a

base approximately of eight feet and six inches, and this limitation makes it more dillicult to secure the flexibility desired. All of 'my "improvements recognize these elements of the problem and are intended to accompanying drawings, wherein like no- 'tations referto l ke parts throughout the several views.

In said drawings,

Fig.1 is a plan view o't my improved truck, with some parts removed, some. portions broken away, and others shown in Fig. 2 is a detail, partly in \'*ertical section on the line 22 of Fig. 1, showing a portion of the central bolster and one of, the tie-beams or yokes which support the central bolster from the end bolsters of the truck;

Fig. 3 is a detail in verticalsection on the line 33 of Fig. 1, showing the central trunnion arm of the central bolster and a portion of one the end t-ie-beams or yokes shown in Fig, 2-;

Fig.4 is a view chiefly in side elevation, but partly in vertical section, looking at the central and left end portions of. the truck, as shown in Fig. 1;

fixed thereto! The Cit Fig. 5 is a VlGW chiefly in Vertical seetion, but partly in side elevation, looking at the central andright end portions oi' the truck,

shown in Fig. 1, approximately 011 the see tion line 3 thereof;

Fig. (5 is a double '1C\\","[)iU.tly'lIl elevation and partly in vertical section, looking at the or left hand bolster, as shoun in F 1g. 1, a portionuoi' the short or center plate bearing bolster, and' parts carried thereby, and onehalilo't the eente axle and its journal box in its relations'to one of the side frames;

1f is a detail in section showing the relation of; one of the eentral ournalboxes to one of the yokes carried thereby on antii'rietion lateral. inotion devices loeated between the top of the box and the topfeross bar the olie on the same section line as the same parts'shown in Fig. 6, buton a larger scale; and H i I 8 is a detail in horizontal section throngh one of the central ournal boxefsand 8-8 of 6, slniwiiig that the legsof the yokeare of less width than the spaeing betfi'veen the uide lugs for the same "carried. by-the y 4 thei'centrallaxle and thenumei'al 12 the Wheels fixed thereto. h i The numerals 13 represent the end boxes,

one'ot' which is shown in Fig. 4, and another of which is shown in Fig. 5, mounted on the. ournals of the endfaxles 1n the usual i w i n !.i way; and these end boxes EIYQAOTE modified standard C. B. type. The 'nun ieral represents the central boxes, adapted to be mounted on the ournals oitvthe central axles,

in the usual. Way, one of which shown Fig. 4 of the drawings in workingposition, on the right end journalot the central axle. These central 'iournal boXes 14 are a'lsoo't the M. C. B. modified standard type, and are identi'eal with the endjoui'nal boxes '13, in

most respects, but difli'er therefromin tee tain details, Which Will hereinafter be noted.

The numerals 15 represent the side frames of the truck and are of the pedestal type mounted with their end jawsembraeing the endjolirnal boxes between suitable yerticalgruides, so spaced as not to permit any lateral motion of the side frames"onj the said end journal boxes, but to 'periuitthev journal bones to I be readily nioi'ed ther'efroni u'henthe franieis jaekediip, onthetfranie to be re novedtron the journal boxes by vertically lifting the same therefrom, when so desired. The 'said' side" frames 15' are, ,opp'os1t ends by cross ties 1.6, as shown in Flgll, so thatthe' rigidly cenneeted' at their numeral "11 represents" truck tram inade up of the said side frames .15 and the said eross' ties 16, is'a rigid structure. I

The said side frames l5 are preferably made of east steeh but might be made of pressed steel, and'are so shaped asto ail'ord the proper openings for the other parts of "the truck,hereinafter to be noted. The pertions of these side frames, which overlie the eentiial' 'iouri1al boxes, stand at such a height as to afford sutlicient clearance between the central boxes and the said overlying por-' 'tions of said frames, bes't shounin jigs.

i and 6.

yoke LT. (see Figs; 4%, 6' and 8), the legs of which are of lesswidth'than "the spacing On 'said eentral'boxes 14;, are'ihounted tions of the yokes lT and the, tops or the:

journal bogges 1e, are niotfnted',lateralmotion rollers 18, as shownjin F1gs. 6, and

7, and tl ese seyeral rolleil's' 18 are held suitgeth'er'by a si'iitabl'e fretaininggrid 19, best shown in Fig; 7. YThe bearing surfaces for "said rollers 'lSpprovidedon the to of the journal boxes'l't a-iid'on the under side of o the heads of the yoltes"17,fare of the same,

" identifie'd, so thatthese-rollers \villbe self centering and [will return automatically -'to their normal or (gene-111'"p sitions, under the Weight ot the loa'dfi The said yokes 17 have thelower ends of tl'ieir-legrs eonneeted by bridge bars 20 bolted thereto beloiv the boxes I l-ih as best "shon ninFigs. th, sand 6. l The legsfot sall'yokes 1! are'abutted and of pedestal uide'd by the adj'acentwalls .lQltli 2 eui ed'to the body portions of the side l'r 15, as best shown in Fig. 4, andare' he thereby from any lateral inotion'in respect to the said side frames"; and the heads or said' yolces' have upwardly extended flanges it, best shown in Fig.0, adapted 'to frames, when the boxes and far enough to so permit, a the said oyerlying portior frames 1 the yokes rise l, that time, otpthe side "will Cooperate fwlth the"said pedestal bracket-s 2? to hold the yolies from embrace the overlying portions of the side The said equalizing levers-2i have por- I pp 1",

essee in. Fig. of the drawings and is sullicient to altord a. clearance of about 'f'ive-eighths of an inch on each side of the central or normal position of the yokes thus allowingalateral play of about fiveeighths of an 'inch each way to the said central journal boxes 14; and the central axle 11, independently ol the end axles 9 and their wheels ill, which is enough for a truck having a wheelbase of S 1 :teet traveling on a curve of 150 feet radius; 1 a

The numerals 21 levers. the inner ends to the adjacentlegs of the 'yokes 1'7; as shown in Figs, 4 and 5 andjtl'ie outer ends of which are pivoted to the lower ends "of links the upper ends' ojt which links are represent equalizing ot which are pivoted.

at, it will-he understood, of course, that there are two sets oil these equalizing levers and links 22 for each side frame, one set of which connect the yokes 17 with the rear portions of the respective side frames and the other set of which connect the said yolres with the forward portions of the respective side :trames.

tions properly shaped to aitord bases; for

bolstar-supporting springs shown" in Figs. l and 6, which springs are surmounted by caps 24, having mountedthereon lateral motion rollers 25, upon wh ch. rest the end,

portions oi the end bolsters26. The said caps 24: are so constructed that they are held by "the bolster columns'tromany lateral motion, but with freedom for up and down motion under the spring action j and'henoe,

the holsters QSare freector lateral motion, with therollers 25 traveling on their seats provided for the same inthe upper surface of the said caps 24; Thecontours of the bearing surfaces for these rollers 25 on said caps 24 and the bolsters 26 are'the same as those disclosed. inthe LeelV. .Barber patent above referred. to; and hence the rollers will return to theirnormal posit-ion automatically, under the weightot the load.

The side frames 15' are'otlt such structure as to atl'ord the proper openings forthe said end holsters 26 and the propereolumns for guiding the saidbolsters '26 aud t-he combined spring; caps an d roller seats 24: in their 5 vertical "motion under the spring action available fronrthe springs The columns ad acent tothe end wheels are allorded by the "EKlJLiCQHt body portions of the side frames, while the (av-operating inner columns are allorded by what might'bc called combined bolster column and central pedestal brackets 2i llTQtQCl or otherwise rigidly secured to the bod'y port-ions of the said side frames 15 in position te -permit the outer of their vertical walls to 'se'rv'e as holster columns and the inner of theirjvertical walls to I serve as pedestals" abutting the legs of the ted to the side f'ramesQ-as shown in Fig.

opposite entlbolster Q6. icentralrigid arnr'35, pro ecting from the yolresil l and guiding the same in their rertical motion and preventing-any lateral motion of said yokes relative to the frames, as hitherto noted. -lthas also already been noted that the directlyoverlying portions of the side frames 15. stand at such height above the central vboxes and the yol es17 arried thereby, as'to permit the needed vertical motion on said central boxes and yokes of their lateral traveh' ascan be readily un-' derstood tron) the illustration of said bolstersand stops appearing in Fig. l.

The ni'uneral 29 remesents the central bolster which is of less length than the space between the side frames 15, and carries, at its longitudlnal center, the lower m mber 3th "of the customary center plates by which the truck is connected with the'car body (not shown), for the usual swiveling movement This central bolster 29 is carried by and articulated to the pair of end bolsters 26, so .as to permit a lmnted'angular motion thereof relative to said end bolsters 26. The means for this'purpose illustrated in the drawings, are bestshown in Figs. 1 2 and These means include end y'okes 31, shown as cast integral with the end portions Oil the said central bolster 29, and provided at both ends with spanner lugs SQ ada-pted to over- .lap the faces" of the end bolsters 2G, and

bothprovided at the same corresponding ends, with horizontal trunnions 32, adapted to he loosely seated n1 horizontal trunnion bearings 31-, provided for the same in one of 'theend bolsters 26, which, as shown in the dravin'gs, is the one at the left end of the truck. The said yokesBl are equally spaced apart on opposite sides of the longitudinal center'or kingr-bolt position of the central bolster 29. hhdw'aybetwee-n the said. two

yoltes 31-, the said centralbolster 29 is pro vided witha centrally disposed rigi d arm 35, wh ch pro ects 1n the opposite direction from the trunnion bearmg yokes 3i and'is itself provided with a horizontal. trunnion :adapted to be loosely seated in axhorizontal trunnion bearing 3? centrally located in the As shown this central bolster is cross coimected to the portions of the end yoltes between which it is located b 1 a cross tie 3R cast inte 'ral withsaid arm and said yokes all as shown in Fig. 1 of the drawings. The'said' thrcej horizontal trunnions"(33 and'36) and the Saul-three seats for the same in the end holsters 26, are, in a common horizontal sters 26;" It follows that'therewill be some vions that tliecentral bolster zrnd-the called at cradle i' theternnions 1o ot so. relies end above the trunnion 116 ot the I'ljlKl iii-111853, as to atlord some clearance hetr-teen the tilCQSWJi the :endholsters 26 znidtheso s iiiinner lugs 32, thereby permitting" the l'lllltllUfl nngnhn bythe trnnnions and trunnion hearings or hrticnletedconnections above described, togetherconstitute whet ma; heproperly r snpportingthe car body (notshon nfl from the truck; and, in view of the way in Which-the end bolstersQfi are mounted in the truck side frames, with free dent-tor limited lateral motion on the anti irietion'hearingrollers, it is, or conrseroh parts rigid therewith arecarried hy' the said end bolsters,'or in other words, the entire or'etteinptin cradle tree for this limited lateral motion In the truck trznnes thereby permitting a limited lateral motion oil. the truck relative to the car bodygwvhen rounding curves; and;

in view of the contour of theroller hearing snrl'nces the said" cradle 'zindthecar body supported.therefrom will returnuntometiu ally to normalpositionfas soon itS the trnch egain gets onto the straight sections of the track: i i Y Them in 'view of the three-pointsuspension ol the central holster 2 9 from the end holsters 26, it the side :l'rsmes shonld raise in respeetto cnehother or out oi? pare allele with each other when rounding curves larities ol the 'roedhed, the cradle Will,

.nexertheless, maintain a horizontal position' and the load thereon will leieqne-llyr' dis tribnted to all four of the sets oiil the end" bolster snpporting' springs il-l and the equal I Then, in view of the liliact; thht the 'centrnl boxes 14-. and the yokesll'ii,

1: n levers together With the innerends of the equalizing' levers 31, can rise or iztll'in respect-to the side "frames Wlllltmlll the seme tiinerthe cen tral' axle and its wheels and the said boxes 14L are free For limited hiteritl motion, independent of the -end axles and their wheels.

and independent of the erzn'lle, it tollon s' that the truck is flexihle'in ererrdireetion, so that the load is distrihntedend CilI'IlGdtO the ntmost edvantagein respect to the. car body the rails truck; i t

Thetrnnnions end o ere provided with holes for retaining'pinsw, as shownzin spanner h Z1 o'l the said pa r-oi. rolresll stzmd at such at height above 0' to adztptthemselres to irreglln 41 s ess-wee Figs. 1. and for prerentingthe separation of the end holsters -26 trom the central bolster 539 end rigid yol es and arm 35,

until so desired.=,'lhe nnme'nls'i-ll represent side heoring brackets fixed to the ends (it thecentral bolster 29 rising therefrom to the properheight, "l'or eooperetio.n with side bearings carried -onthe'holster of the car body not: shown.- These side hearing; brackets appear in Figs. land (3.

The numerals 4L1 represent the outer members oi. hrelre hangerbrackets, whichnre suspendedtrointhe end cross tics 16 of the side trznnes l5, in lineqrith the end Wheels 10, shown in Figs. 1-, it, and. 5. The seid lmngersr-ll are olinvierted Ushepe, as clearly shown in Figsg'l and The inner brake hanger brackets ere shown as integl rel \tith the-side fren'iesilfi and as projecting wii'mnrd therefrom at a snitabloheight above lthe'eiid holsters 26, as ilhistretedin '6'. ,These positions for the, said brake hangers adapt the said brake hangers for the support of a clasp brake in this 51K- Wheeled truck, which is ametter of some diflicnlty, because of the short wheel-base;

Clasp brakes have been fonndso satistao tor T tlmtthev are now enerall used on 3 e a, Y

't'reiglitatiiuoks. v

v lit-"Will, Off course he understood that the details-of the strnetnre illustrated may be varied Without departing i'r ples of myinv'ent-ion.

ll hreit Ieleim is: r I 1. In e six-heeled car-truck the comhi-' netimrWit-lr the side frames of end bolsters n'ioinitetlin the said "l' tor up- 21 nd down mot-lonhn'd :1; limited let erslmotion and 2tcentre-l holster supported holster in respecttosei'd end holsters, snhtantmlly as described.

2. In, a six-Wheeled-certrnelt, the combination with the; side tremesyo'li end bolsters mounted in the sand frames, with tree'dom for up and down motion and a limited lateral n'iotion, and afcentrel; holster supported t'roni'said' end holsters and articulated thereto et threepoints of suspension in a com- "mon horizontzrlplane, for permitting: a 11mited'ene'nhtr motion ofseid central bolster in respect to said end bolsters, s1 ihstantially as descrihedf 3. In a six-Wheeled loivn-p and down motionend a limited lateral motionuid an; .central'bolster: sup ported from "siiid end holsters end nrt-icnlnted therem the prineim nes, with freedom or truck, the ((Jlliblw nation with the side framedol end bolsters IYIOllDtQQlxIII the sznd "trames with "Freedom sters, With-all of said trunnions in a common horizontal plane, substantially as described.

4. In a six-wheeled car truck, the combination with the side frames, wheel axles and boxes, of equalizing levers having their inner ends pivoted to yokes carried by the central boxes and their outer ends pivoted to said frames, end bolsters spring-supported from said equalizing levers, with freedom for up and down motion and a limited lateral motion on anti-friction devices, and a central bolster of less length than the space between said side frames, and which central bolster is supported from said end bolsters and articulated thereto by three horizontal trunnions, two of which are rigid with the said central bolster and are seated in horizontal trunnion bearings of one of said end bolsters and the other of which is rigid with said central bolster midway between the other two and is seated in a horizontal trunnion bearing of the other of said end bolsters, with all of said trunnions in a common horizontal plane and the central member on the central line of the truck, substantially as and for the purposes set forth.

5. In a six-wheeled car truck, the combination with the side frames, of end bolsters mounted in the said frames, with freedom for up and down motion and a limited lateral motion, and a central bolster of less length than the space between the side frames, and which central bolster is supported from. said end bolsters by two end yokes and a central arm, all rigid with the central bolster, which central arm has a horizontal trunnion seated in a horizontal trunnion bearing centrally located on one of said end bolsters, and which yokes are provided with horizontal trunnions seated in horizontal trunnion bearings on the other of said end bolsters with all of said trunnion bearings in a common horizontal plane and which yokes are provided with spanner lugs which over-reach the faces of said end bol sters, substantially as and. for the purposes set forth.

6. in a six-wheeled car truck, the combination with side frames of the pedestal type resting on the end boxes, of yokes carried by the central boxes, said central boxes being mounted for lateral movement relative to said yokes and said yokes being mounted with freedom for up and down motion therewith relative to said frames, and equalizing levers for carrying and distributing the load, and which equalizing levers have their inner ends pivoted to said yokes and their outer ends pivoted to links which, in turn, are pivoted to said side frames, substantially as described.

7. In a six-wheeled car truck, the combi nation with the side frames, wheel axles and boxes, of yokes carried by the central boxes, with freedom to move up and down with said central boxes, equalizing levers having their inner ends pivoted to said yokes and their outer ends pivoted to links which, in turn, are pivoted to said side frames, end bolsters s pring-supported from said equalizing levers,

with freedom for up and down motion in said frames, and a limited lateral motion on anti-friction devices, and a central bolster of less length than the space between the side frames and which central bolster is supported from said end bolsters and articulated thereto, for permitting a limited angular motion of said central bolster in respect to said end bolsters, substantially as described. 7

8. In a sixavheeled car truck, the combination with the side frames, wheel axles andboxes, of yokes carried by the central boxes, with freedom to move up and down with said central boxes, equalizing levers having their inner ends pivoted to said yokes and their outer ends pivoted to links which, in turn, are pivoted to said side frames, end bolsters spring-supported from said equalizing levers, with freedom for up and down motion in said frames, and a limited lateral motion 011 anti-friction devices, and a central bolster of less length than the space between the side frames, which central bolster is supported from said end bolsters and articulated thereto by three horizontal trunnions, all rigid with the central bolster, two of which are seated in trunnion bearings, one of said end bolsters, and the other which is seated in a trunnion bearing the other of said end bolsters, with all said trunnions in a common horizontal plane and the central member in the central line of the truck, substantially as and for the purposes set forth.

9. In a six-wheeled equalized car truck, wherein the inner ends of the equalizing levers are carried by yolces embracing the central journal boxes and which boxes and yokes are free for a limited up and down motion in respect to the side frames, but which yokes are held from any lateral motion in relation to said frames, of anti-trio tion lateral motion devices located between said yokes and said central journal boxes, for facilitating a limited lateral motion of the central axle and its wheels and boxes independent of the end axles and their wheels and boxes, substantially as described.

10. In a six-wheeled car truck, the combination with side frames of the pedestal type resting on the end boxes, of yokes carried by the central boxes, with freedom for up and down motion with said boxes relative to said frames but held against any lateral motion cross-wise of said frames, equalizing levers for carrying and distrilmting the load and which equalizing levels have their inward ends pivoted to said yokes and their outer ends pivoted to links which, in turn, are

lSO

pivoted to saidside frames, at cradlespring supported from said equalizinglevers, with freedom for up and down motionin relation to said frames and a limited lateral motion on anti-friction devices carried by said springs, and anti-friction lateral 111ot-io11=-d'evices located between .aid yokes and said central boxes and which yokes are so related to the central boxes as to permit a limited lateral motion of the central axle a-nd its wheels and bones,-independentof theend axles and their Wheels and independent oi? the lateral motion of said cradle,- all substantially and for the purposes'set forth.

11. In a SlX-WhGGlGCl car truck, the eombination with side frames, of end bolsters mounted in said tlraines with ili'ee'don'i for up and downmotiom'and a central bolster having supports received in said end bolsters and movable relatively thereto but maintaining the end bolsters at approximately right angles to the axes of said central bolster Supports.

12. In a six wheeled car truck, the eombi: nation with th'eside f allies; of endbolsters mountedin said frames-with freedom for up and down motion, and a-central bolster supported by a three-point suspension on saidend-bolsters and movable relatively thereto.

In testimony whereof I ailix mysignatnre.

EDWIN W. WEBB.

lVit'nesses:

F. L. BARBER, F. D; BARBER.

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