Патент USA US2411939код для вставки
Dec. 3, 1946. 2,411,939 R. A. sHlELDs HIGH CAPACITY MINE CAR f 5 Sheets-Sheet 1 Filed March V22, 1939 ` ____ __ __ __ __ __ INVENT‘OR Reha? Ä ,512 zeZds 4 u* M ATTORNEY ` Dec. 3, '1946. R. A. sHxELDs 2,41 1,939 HIGH CAPACITY MINE CAR ' `Filed. March 22; 1959 .O O O "N VI.l O O 0A 5 Sheets-Sheet 2 Dec. 3, 1946. _ R. A. sH|ELDs~ 2,411,939 HIGH CAPACITY MINE CAR . Filed March 22, 1939 5 Sheetsf-Shee'c 3 De¢.3,-1946. ‘ RASHIÉLDS l „ - 2,411,939 HIGH cA?AcITY MINE- CAR Filed March 22, 1939’ 5 sheets-sheet 4 ’ ATTORNEY/ Deals, 1946.l R A, SHIELDS 2,411,939 HIGH CAPACITY MINE CAR 35-111 I INVENTOR ATTORNEY Patented Dec. 3, 1946 ‘ 2,411,939 UNITED. STATES "IPATENT OFFICE , ' ' . ' A „ . f ` ’519s . . _Í ‘ 2,411,939;v ' ì , Y . ~ ,me Mmmm@ Robert A. » Shields,r Berwick,` Paw.-` assignor to American ~ Carî .andïfil Foundry 1~Company, New York, N. YY.,l ay corporation fof: New ersey Y YAl'mliícauon'ivralr’cli 22, 1939, serial No. 263,336 n 1s claims.. (cries-’sen 2 i ~ . Í _Figurel is an elevational View of substantially . This invention relates to" raìlwaycars in gen » eral and in particular to mine or industrial cars of the high capacity type. f one-half the car; l v Fig~ 2' is a sectional View of the otherhalf of the car and when taken with Figure 1 showsthe corn The majority of mine cars have in the past been " constructed with a heavy traction frame which of -l Y plete car; f Figr 3`is a plan View of substantially the half car . itselfv was sufliciently strong to `carry the entire c lading 10aa for .which the 'car was designed. This ~ Fig. ‘l is an end View of the car with one-half " heavyframe had attached thereto th'eìbox like .'gbeing shown in s'ection‘," substantially at the' axle structure intended to retain'the ladingand trans plane;`~ n mit the -load'to the frame. ‘It was, of course, nec-- ‘ f ‘ -, Fig; ‘5.1 is an enlarged sectional viewtakenffsub essary to bracethe box like structure and make it stanti'ally'on line 5-5 of Figure l; . sufficiently strong to carry the lading and load ' .` l ‘ "l Í Figicô is anuelevational View of one end "of'a modi'ñed lform of car with parts broken away to Vto the‘frame, Which‘resulted inv a car far stronger than necessary and with> the metal placed so'that better show the end construction; its fullvalue was not developed. . Certain of these , . .' „ Fig. 7 is an inverted plan viewof the modified. cars were many times too strong in certain places, lWhile being barelystrong enough in‘others to carry ' car shown inv Fig. 6; ì lother_obstructions to the ready discharge of the ` i; îFig.' 1'0~V is an >enlarged sectional View showing' a - ímodiñed' form of longitudinalstilïener construc .Fig 8 is an'enlarged sectional View taken sub--v the load >and inY practically all cases were ex stanti'ally online 8_8 yof Fi'g.i6; ’ ' tremely rough on the interior, presenting. a large , Fig. 9îis an enlarged sectional View taken sub .numb-er of rivet heads, sill ñanges`,_braces and ' stantially on line 9-9 of Fig. 6, ' v lading. It is of primeimportance that a mine car have'the interior as smooth as rpossible for ythe tion which may be used either with the construc tionshown'in Figuresv 1 to.5 inclusive or in Fig ñnely-divi-ded coal sifts to the bottom or is Washed . there by the Water loaded with thev coal'and packs V' :uresô to'9` inclusive. . JReferring now to the.> drawingsl in ldetail A and ` in particular’ to Figures Íl to 5 inclusive, it will be lading and to eliminate» projections against which finely divided coal or other material may pack.r A further object vof vthe inventionis the 'pro-` . . vious': thatv the` car may be `supported onl through 'seen »that the c‘ar has'- been-constructed with the' vision of a minecar‘constructed mainly of plate "?lo‘or as low asy possible .andwithí the `c‘arïloody supported on stub axles, although it'will Ibe‘olc .axles or that the sideportions may be carried ' at> a.- different level than the center or main "Tfloor section.V As shown the car is> constructed ' ~ metal and Without theiuse of separate ysill mem Withjfajcentral or main‘ floor section 2,' having. its `bers butY with sulîJ-stantiallyv -box section longitu . side edgésï?langed upwardly as at 4, then' laterally . dinal stiffeners .formedby integral parts of Íthe f car'structure. , - - in the bottom against any obstruction to such an extent that it becomes rock like and almost im possible toremove..l It is an object, thereforaof the present invention to providea mine car hav ing a smooth interior >for the ready discharge of „ ~ >>outward as-"atiy 6, *thus forming a pïanj shaped ` ` ‘ central'y section with'V the ends open. Thenside k A' stillfurther vo‘bject'of -the invention is they 40, ¿provision ofv amine car or other industrial car' win'gsl Torf.sideblladiïngl portionsk Vof ‘tnefxcar are . ~ fòrm'edbyìplate .metal sections 8,v lliavingv their ~ 'having substantially box section longitudinal stif :feners intermediate theside walls landfformecl by " overlapping. flanges of the floor plates, thus caus ing themetal to serve both` a load carrying> . and load retaining function. - ' ' their .inner side edges are' flanged upwardly as Aat I’llgfth‘é'ri> laterally'inward‘as at i4. The up 'wardly directed ñangesl I24 are inthezpresent in ‘star'rce'4 madeïofsuñicient depth to' permitthe " 'l »A-I'still‘ further Vobject of the invention . is »the ' : yila'nge `It to -overlap the flange (i` of the central f fsection. while" retainingzthe Wing portions' ß` and provision of a mine c-ar of simple construction in ’ which*` full value is obtained.A from the component ‘v metal parts, -thus giving fa '_car> ofl maximum strength and capacity with a minimum of Weight. These and other lobjects _of the inventionwill be apparent to persons skilled in thev art from a study ì f of the following ~description Y vand accompanying "centrali floor section 2 A`in af substantially c_’omm'orl .-plané‘.,Y The jove'rlapping'iflanges i4 ‘and’ v6 are VFsuitably secured togetherffeither -by rivetingfïor welding; although' the~ latter is'4 preferable since itipre's'ents a srnootl'ler> surface to1 thepjlading. ".It Will thus' be seen thatïaY substantially b'oxlsection longitudinal' stilîener' is :formed bythe vertical 4 3 ñanges 4 and I2 and horizontal flanges -6 and I4 of the center and side sections respectively. The maximum strength of this box section may be developed by closing the bottom thereof but in practice it has been found sufficient in most cases to attach tie plates I6 at frequent intervals closing the bottom of the box and tying the center and side sections together. The side seo tions have openings cut therein to receive the plate 44 and the center iioor section. As clearly shown in Fig. 3 the bottom plate 44 and the main portions of the top plate are extended be yond the center section in order that the flanges 45 may be riveted directly to the ñanges I2 of the outer floor sections, while the vertical flange 49 of the top plate may -abut the ends of the “iianges 4 and 6 of the 4center floor section. It will thus be seen that in this manner a strong wheels W and these wheels may be mounted on 10 connection is made between the .bumper and through axles or on stub axles I8 as shown."" drawhead housing and the longitudinal stiliener The ends of the stub axles support inner boxes . or sill member with the housing backed up by 20 inserted within the box section stiffener and ' acting not only as a carl support, but also asa ' forces which are the maximum transit shocks to >the entire center ñoor section to receive buñing tie between the ñanges 4. and.l.2',.sincerthe «box 15` which a car is subjected. The housing may -receive any type of bumper and drawhead con is rigidly attached within the box section by rivets or bolts 2|, thus materially strengthening struction desired, but in the present instance a doublel yacting spring bumper and drawhead 52 the stiffener or sill member at the area'of great-' has been shown as inserted within the housing est load concentration. This journal'boxplace ment of necessity causes upright portions of the 20 and held in place by vertical bolts 53. stifiener or sill member to be intersected by the stub axles and preferably these upright portions The central iioor section is stiii'ened inter mediate the bumper and drawhead housings by l means of angles 54 vplaced with the edges of the are located close to the wheel hoods, as clearly legs in contact with the iioor sectionA 2 for at shown. The outer ends of the stub axles sup port outer journal boxes 22 riveted or otherwise 25 tachment thereto `by welding 4or other means. The ends of these angles are also. welded or attached to a load distributing structure 24'. A . otherwise attached to the vertical flange 4 of portion of the load distributing structure is pref the center floor section and will, due to the inner erably of Z section having the lower flange 25 journal box, form a ready tie between the entire attached to the side section 8 and with the web extending vertically, while the top flange 26 is 30 box section stiflîeners at either side of the car, thus in elîect continuing the stub axles across directed inwardly for support upon the outer the center floor section','while at the same time journal box and to provide a ledge upon which preventing any sagging thereof. It will be seen the wheel hood 28 may rest and be secured by that the longitudinal stiffeners or sill members any suitable means. The Z member is bent to provide an end and outer side adjacent each 35 together with their reinforcements carry a por tion of the load to the stub axles, while a portion wheel, while the other side is closed by a gusset of the load will be carried by the end walls and plate 3D flanged at its lower edge as at 3| for side walls through the gussets of the load dis attachment to the side floor section and secured tributing structure to the wheels. In this man to the Z member `by vertically extending angle 32. The inner portion of the gusset is reduced 40 ner substantially every component part of the in height and extends horizontally into contact and attachment with the ñange I2 of the box section stiflener and has attached thereto at the 1 upper edge an angle 33 with the one leg located inthe planeof the ñanges I4 and 26. It'will thus be seen that the load distributingstructure consistsof‘ a box rlike arrangement 'formed of a'Z land .gusset plate rigidly attached to the box - section stiiïener and enclosing the wheel and dis tributing the load from the side floor section to the outer journal box. _. - Y. The outer edges ofeach gusset 30 are attached to angle stakes or stiffeners 34 secured to the car structureserves to retain the lading in posi tion and to carry the load of the ladingto the wheels and axles. It will also be seen- that a large capacity car has been provided with sub stantially the entire floor area at a -low `plane below the level of the axles and with a minimum 4of projections ~into the lading zone. Each of the necessary projections into the lading Zone present a smooth surface to the lading eliminat ing pockets or other obstructions to the discharge of lading as the car is dumped. f Referring now to the modiiied car shown in Figs. 6 to 9 inclusive it will be seen that the center floor section 6I) is formed at the central part thereof with a car haulage channel B2 adapted to receive Atherein ka car haulage lug The side edgesïof the center floor section ‘side wall. 36 which is attached at its lower edge to the flange Iû of the side floor section, while the top is deflected >inwardly and upwardly for attachment .to a Z` section top chord 38. The ends' of the side- sheets are rigidly attached to > are iianged upwardly as at 64, then outwardly as at G5. The vertical flanges 64 are .pierced the car end walls 40 in any suitablemanner and the top edges ofthe end sheets are preferably 60 in order to receive'the throughaxle B6' which supports the box 63A andv inv turn'. is.. supported reinforced Vby angle structures 42 .which in effect by the car wheels W. V)In this car'the side floor continue the side‘top‘chords 38 `across the ends sections. are provided with l.two levels;l one at each ofthe car. .The end walls are, of course, rigidly end substantially in alignment with the center connected .not only to the sideY walls, but also » t'o the side ñoor sectionsy >longitudinal stiffeners or floor section and one at .the central vzone -at a sill members and to the center .floor sec-tion Iby level substantially parallel 'to the ñanges G5 of . the bumper and draft housings of any suitable the center ñoor section. The _end side floor sec ~ tions 'I0 have their inner edgesflanged upwardly vas at 1i, thence inwardly as at 12 »to underlie the'flanges 55 of the center'ñoor section. Suit able cross ties ‘I3 join the lend side sections and center iloor sections, `thus tying the box section construction.- As clearly shown in Figures 1,;2, . 3 andz‘i the end bumper and îdraft housings. are formed of a substantially ñat bottom plate 44 n hanged 'upwardly at its side edges- as at 45 ,(Fig. 4) foriattachment by means of an angle ,46 to -the top Íplate `48,;whichv topplate has its inner iedgeïdeflected downwardlyas at 49,' thence rear `-lwardly-ras atl 50î..for"attachmentito thefbottom, ~ longitudinalstiiieners or sill members together by attachment of iianges 65 and 12; The in termediate or higher level side floor section 15 annees has the inner edge ñanged 7downwardlyfasat 16 -ïto overlap ¿and? beïsecured lto the 'fflange V64 of thevcenter-se'ction, thus forming a strong stiffener UAbetween .the box-section Aends and a convenient Í arrangement for attachment oi the boxes 68 pre vliously referred" to. As shown in the present ' vconstruction the'ñangef‘lìâ ofthe center section ` has been burned awayiin the area occupied by *tl'íei floor section 15,'b-ut it is,“ofY course, obvious Èdead.' »In-‘this car as in the car previously de~ scribed, it will'be seen that eachcomponent part f serves not only to Vretain the load in position but î “to transfer the weight of such load to the aides 5 ffor support by the Wheels. ï‘ , y I « . It Will, of course,v be obvious that if desired the ’ side »ñoor section may be located at a single level ‘ 'above'the center ñoor section, in which case the angular? `form of stiffener present'l between the ' -m‘at'tms Side' section maybe 1owered slightly 10 'aides will bev extended completely to the fend of _ the car. It may be desirable under some circum ~ and placed beneath the vflange 65'if it is so desired. The’endfedges of the central side iioor section are stances to’provide additional strength between ‘ supported by angles' 16’ attached to gussets 8U - theaxles, in which case the intermediate> side which' in turn arefrigidly connected to the .car side wall and to the flanges 64 and ‘II- of the center and end side sections respectively. The lower edges of these gussets are >flanged. as at 82 vfloor section T5 may be flanged downwardly as at H0 (Fig. 10) thence inwardly as at ll2,'thus providing in effect a box section longitudinal lstii’fenerthroughout the length of the car. The to'underlie and support ‘the'inner edges of the end side floor portions asclearly shown in Figs. 7 I í'langes 65- and H2 'may be securely attached by ' f ïa'nd'ß. It‘will thus be seen that the .gussets tie to such attachment the boxes H4 will be attached ` ` -the side walls to the longitudinal stilîe'ners or sill ' members and support the edges of both the in any suitable means, such as welding, but prior securely to the flanges 64 and 65 of the center In this form the gussets 8,0 pre -floor section. ~ Viously referred to will, of course, occupy vtheir termediate and end side door portions, while at ' same position, while the flanges Ilû will. abut the same time serving asa tie between the flanges #such gussets and be attacheclthereto, thus in ` Yf‘lïl and 64 of the box section longitudinal stilîener. It: will also be seen thatany loads picked upby „ ' elîect making the ñanges 1| and IIO continuous :the `short box sectionu'stiiîeners will be trans mitted atleast in part through the gussetl to `throughout the length-.oi the car. >It will, of - course, be obvious that if it is desired that the entire side floor section be'carried atthey same @the stiffener flanges 64 and-16 which will in turn y ¿carry the loads to the wheels-’and axles. ¿TheV 30 level the 'construction shown `in Fig. 10 >is ex tremely suitable and will give a completer box «intermediate side floorsections have a part there lsection longitudinal stiffener throughout the ‘lof cut out in" order to permit vrotation of ‘the length of the car. It will also be obvious .that wheels and withdrawalof the same from the` axle and such openings'are coveredebywheelhoods . such an arrangementis equally applicable to the 1.. till.vr attachedr to the longitudinalv> stiffeners, in .Vtermediateside floorfsection and carl side wall. i'The .car wall `86 .inthe instance shown extends constructions shown in Figs. l to 5 since it is only >necessary to turn the side ñoor sheet yend for f end to obtain the construction shown in Fig. 10, - although in turning the side ñoor sections> it _ between the end walls 81 to which they are rigidly ., attached and has itslower edge ilanged as at 88 > to. support the> outer edges of both the end and intermediate side vhoor sections. VThe upper edge . of the car side walls is stiffened vand'reinforced ' may be desirable to either eliminate theñange :|01v or turn such ñange in the opposite direction [to receive the side wall sheets. ' ' It will ‘be obvious from the preceding descrip by an angular topy ehordîformed by an upwardlyv f-tions of the various constructions that in every ’inclined portion 89 joined by a roll .Sillv toa vertical ' . yiiange Si, which in turn is. integral with a hori » instancea smooth interior vis provided for the `. z_ontal .flange 92 andgvertical :flange 93.` The -' `plate metal securely attachedtogether and so ’- »car' and' that substantially all> parts are made of ?lange93 overlapsandis spaced from the -edge I formed ’that the’full value of the metal is de~ of the inclined portion 89 and-is adapted to Are Yceive therebetween the upper edge oicthe side >"velop'edQ îIn- other' words, each part of the car servesv not only to retain the lading in position, , sheets to which they are attached by any suitable . e but alsoto' transfer the load ofsuch lading to _ ' means such as welding.. ' ’ y ~ > Any desirable form'of bumper and drawhead the wheels.` It will be equally obvious that various modifications in form andarrangement of parts this housing vis formed by 4a lower: Z 'shaped .plate "95 and» ani upper distorted Z‘f'section plate-196 joined together directly at their `»rear edgesvand other' than those described willsuggest them selves to persons skilled in the art, but all >such fmodiñcations and rearrangements of parts are .contemplated as wi-llv come Within the scope. of à « intermediate their edges by an. angle plate 91. . the following claims which deñne my invention. housing maybe used.y but in the> present instance »This structure is attached to the horizontalfpor 'tion o-f the centerk ñoor section-as well as to the ' f1. What 'In is a claimed mine or is: otherlindustrial car , having The center ñoor'section is stiffened by means ‘side .Walls and, end walls the combination of. a . .pan-shapedV :central floor portion, .substantially . .pan-'shaped side floor portions adjacent each side " of tie plates 99 iwelded toy the sectiony 60 and f >flange» 6'4lof kthe centerrfloor-sectionand having vfloor. portions extendingV substantially continuous flanges 64 thereof and carries any's'uit’ableïtype4 its ends `extendedvas ’atwlIJLi-forattachment'tòïl » edge?of .said central floor portion, said pan-shaped fromfend wall‘to end wall oi` the car and having ~ f lbe‘seen that a portionof the ñoor loads> will be their adjacent side edges secured together in 1 'spaced relationship by means joined to the upper directly carried to the journal boxes,~ while other portionsv willbe carried by the side walls through f l'edges of the adjacent side edges and closing' the hspace therebetween to thereby form the entire ' 'the' side floor sections andr gusset 80. ` It willfthus ' > -guSSets `il!! to the longitudinal stifîeners` andaeross‘; ïiloor of the car as well as upwardlyprojecting 'ties .Which‘will in,v turn distribute the load to'the vca'raxle's. The gussets andl cross tiesl also serve ¿substantially box~section >longitudinal .stiffeners ' to prevent bulging’ofk the car'side walls’or sagging «of .the ycenter floor section andalso‘> prevent any *wall to end Wall ci the-car and ~forming the main 'extending substantially continuously from` end longitudinally extending load carrying velem-_ent Yfdistortic'mo'ofthev longitudinal stiñeners> under'i- 75 located between the side walls. caallifìêß 7 « ' 8 2. :In a mineor other,industrialïcarfsilpported snacerzì‘wheels,- and axles the combination4 of4 a ipan‘shaped central floor portion,~ substantially "pan shaped side plate> floor portions adjacent each side edge of said central floor portion, said Y."panshaped floor portions being-secured together ,i ¿located 'finta-»plane .spaced .upwardlvfi from, .the ¿plane ofthe central noorportion and formed With «zdownwardlyfdirected flanges, andmeans joining ï-allfof the» adjacent flanges together towsimul „_,taneously Vform _the car; ñoor A`and longitudinal rrstiifeners-therefor. , „ ¿along their adjacent edgesk by meansvholding the ¿117.5111 a mine or. othery industrial car` having , sidesy of l the `pan shaped portions in Vspaced rela Vside ‘wallsgthe combination of_ a central floor por tionship, said ' means closing theV space , between tionhaving gupwardlyrdirected flanges on the side . the ,sides and being joined tothe upper edgesçof 10_ edgesV thereof, side'ñoor portions adjacent .each » ¿thesides to vthereby simultaneously formÀ the floor „ ...sideedgeof the central floor portions, saidside -zofthe car as well as'subst-antially continuous floorj; portions having the VVends thereof located substantially inthe plane of the central iloor ¿portions and formed withd upwardly- directed Vandadapted toV receive the axles for supporting 15„flanges, the intermediate portion of said side the car, said journal boxes cooperatingwithsaid floors being located _in a plane spaced upwardly 1 boxcsection.longitudinal stiiïeners, andjournal . boxes secured within said box-section stiffeners -, means- in connecting and holding vthe sides ofthe from the Vplane of the central floor portion and x'pan- shaped floor portions in spaced relation ~_ formed withgdownwardly directedflanges, _means „thereby mutually bracing each other._ _ y 3‘. In a mine or other industrial car the com '_ bination of a central floor portion, side lfloor v ’portions adjacent each side edge .of the central ‘ floor portion, upwardly extending flanges formed on the adjacent edges of said floor portions, and y joiningv all ¿of the vadjacent ñanges together to 20 simultaneously» formthe car Vfloor and longitudi ' `nalstiffeners therefor, and gussets joined to said side walls and joining the end and intermediate portions of` said side floory portions». » w8;` In a mine-orr other industrial car having side ' reñanges formedonthe free edges of said flanges, 25 ~Ywalls theA combination vofv acentral floor portion said reflanges being directly secured4 together to hold said flanges inspaced relationship andV to simultaneously forni 'the -car ñoor and substan x tially box-section longitudinal stiffeners there for, said reñanges overlapping each other to pro-s q duce a double thickness of material acting `in tension on the upper edge of said box section . stiffeners to thereby reinforce the same. .fhagvingyupwardly >directed flanges on the side edges thereof, side ñoorportions adjacent each iside edge’of thegcen'tral ñoorportions, said side ,fpiloor'portions having .the ends thereof` located :substantially in the-plane voi’ the `central floor - f‘ portions and ’ formed: with ’ upwardly directed ;.flanges,1the intermediate portion of-,said side `floors being located in a plane spaced upwardly from the planev of the central floor portion and 4. In' a mine or other industrial carY supported on spaced wheels and axles and havingspaced 135 formed with downwardly‘directed flanges, means joining all `of the gadjacent flanges together to = end walls the combination of a central floor por simultaneously form the car floor and longitudi tion extending substantially from end wall to end wall of the car, side floor portions adjacent each nal'stiffeners therefor, and gussetsr joined lto said side edge of the central ñoor portion, `flanges sidewalls and joining the'end and intermediate formed on the adjacent edges of said floor por-_ .40 portions of said side floor portions, said gussets being also joined to the flanges of said end and tions and between said wheels, and means directly securing said ñoor portions together to simul intermediate side floor portions and to the ñanges taneously form the car floor Yand longitudinal - of said central ñoor portion. ` stiffeners therefor, which stiffeners are integral §` 9.. In a mine or other industrialcar having side with the floor portions and extend substantially 45 walls the .combination of a central floor portion continuously froml end wall to end .wall of the „having upwardlyçdirected flangesV on >the side car, said means retaining at least portionsof said _edges thereof, sideY floor portions adjacent each flanges in spaced relationship, thereby forming at VAleast portions of said stiifeners of box-section. 5. In a mine or other industrial car lthe com .Y side edge `of the centralfloor portions, said side door portions. vhaving the ends thereof located 50 substantially in the `plane of the central floor portions and formed with >upwardly directed bination of a central floor portion having up wardly‘directed flanges on the side edges thereof, flanges, the intermediate portion of said side side floor portions adjacent each side edge of floors being located ina plane spaced upwardly theV central floor portion, upwardly directed from vthe plane of the central iioor portion and flanges on the side edges thereof, means ‘join 55 formed with downwardly directed> flanges, means ing the adjacent upwardly directed flanges joining all .of the adjacent flanges together to together to simultaneously form the car floor simultaneously form the car floor and longitudi and integral longitudinal stiffeners therefor, - said means retaining at least portions of said . nal'stiifeners therefor, said means joining the intermediate side floor portion flanges and cen flanges in spaced relationship thereby forming at 60 tral floor flanges in abutting relation and joining least portions of said stiifeners substantially of box-section, journal boxes securedV within the box section portion of said stiffeners and addi the end side iioor portion flanges and central ñoor ñanges in spaced relation thereby forming f the ends of the stiffeners of ‘box section, and tionally securing-said ñanges together, and ‘axles vgussets joining the end and intermediate side supporting said journal boxes and located at least 65 floor portions to the side walls, said gussets also in part above said floor. -closing the inner -ends of the box-section portions 6. In a mine or other industrial car having side walls the combination of a central floor por ofthe stiffeners and connecting the same to the 'intermediate side floor flanges., ~ tion having upwardly directed flanges on the side 10. In a mine or other 'industrial car having edges thereof, side floor portions adjacent each 70 side walls the combination of a central door `por side edge of the central licor portions/said side tion side ñoor portions adjacent'each side edge floor portions having the ends thereof located Aof the central ñoor portion, flanges formed on substantially in the plane of the centraliioor por the adjacent edges of said floor portions, means tions and formed with upwardly directed flanges, securingV said floor. portions together with the the intermediate portion of said side floors being , 75 :flanges held in spaced ,relationship lto ’simultane 2,411,939 . tures, inner journal boxes secured to said box section stiffeners, stub axles supporting said jour nal boxes, wheels carrying said axles and pro ' jecting through said side floor portions, wheel hoods connected to the box-section stifíeners and box-section stifieners therefor, journal boxes se cured within ’ the box-section stiffeners and mutually bracing each other, load distributing structures secured to said stiíieners, to said side floor portions and to said side walls, additional journal boxes secured to load distributing struc tures, stub axles supporting said'journal boxes, wheels on said stub axles, and wheel hoods con nected tothe box-section stiffeners and load dis tributing structures. 10 nal boxes secured uto said load distributing struc ously form the car floor and integral 'substantiallyl , load distributing structures, gussets comprising a -part of said load distributing structures and « connecting the side walls and box-section stif 10 feners, and cross ties joined to certain of said ‘ .iianges and central iioor portions to prevent dis tortion of the floor and to form in effect a vcon 11. In a mine or other industrial car having side walls the combination of a central floor por tinuation of the stub axles transversely of the tion, side ñoor portions adjacent each side edge car. » of the central floor portion, flanges formed on the adjacent edges of said floor portions, means 14. In a mine or other industrial car having side walls the combination of a central iioor p0r `securing said floor portions together with the iianges held in spaced relationship to simultane of the central floor portion, flanges formed on ' tion, side ñoor portions adjacent each side edge the adjacent edgesv of said floor portions, means said floor portions together with the section stiiîeners therefor, journal boxes secured 20 _ securing flanges held in spaced relationship to simultane within the box-section stiiîeners and mutually ously form the car floor and substantially box bracing each other, load distributing structures section stii’feners therefor, portions oi the flanges secured to said stiffeners, to said side floor por of said central floor portion being cut away tions and to said side walls, additional journal whereby the box-section terminates inwardly of boxes secured to load distributing structures, stub ously form the car floor and substantially box axles supporting said journal boxes, wheels on said stub axles, wheel hoods connected to V'the box-section stiffeners and load distributing struc tures, and cross ties of inverted angle form con nected to the central floor portion and box section stiffeners and positioned substantially in alignment with the stub axles. 12. In a mine or other industrial car having side walls the combination of a central ño'or por tion, side floor portions adjacent each side edge of the central floor portion, ñanges formed on the adjacent edges of saidfloor portions, means the car end, and end structures secured to the central ñoor portion and to the iianges of said side iìoor portions, said end structures overlap pingly .abutting and being secured to the ends of said flanges of the central floor portion thereby closing the ends of the box-section stiiîeners and bracing the end structures. » 15. In a mine car, wheels and individual _wheel supporting stub axles at each side of the car, _wheel hooding structures overlying the wheels, .-means supported on each stub axle, a sill member extending longitudinally of the car along each side of the car, each said sill member including securing said ñoor portions together with the flanges held in spaced relationship to simultane .an upright wall portion disposed at least in part to the box-section stiiîeners and load distributing structures. supporting means, longitudinally extending sill elements inside oppositely disposed car wheels and forming at least partial support for the said supporting means, each said sill-element includ ously form the car floor and integral substantially 40 beneath the horizontal plane occupied by the wheel axes and so close to the adjacent wheels box-section stiflïeners therefor, said box-section as to lie in a vertical plane which intersects the stiffeners forming the main longitudinally ex stub axles at that side of the car, and a central tending load carrying elements between the side lading bottom substantially Vclosing the space walls, load distributing structures located wholly above the ñoor level and secured to said stiffeners 4.5 between the sill members, said means supported on each stub axle being carried in part by a and to said side floor portions, outer journal sill member and in part by other parts of the boxes secured to said load distributing structures, car structure. inner journal boxes secured to said box section 16. In a mine oar, car wheels and individual sti?feners, stub axles located wholly above the wheel supporting stub car axles at each side of floor level formed by said central and side floor-` the car, wheel hooding structures closely over portions and supporting said journal boxes, wheels 'lying the car wheels and with inside longitudinal carrying said axles-and projecting through said closure walls close to adjacent wheels, stub axle side floor portions, and wheel hoods connected 13. In' a mine or other industrial car having side walls the combination of a central floor por tion, ‘side floor portions adjacent each side edge ing an upwardly extending wall portion disposed .of the central floor portion, ñanges formed on at least in part beneath the horizontal plane oc ously form the car íioor and substantially box side of the car, and a central lading bottom section stiiïeners therefor, said box-section stif feners forming the main longitudinally extending load carrying elements between the vside walls, fof the axes of the car wheels and substantially closing the space between the sill members. the adjacent edges of said iioor portions, means 60 cupied by the wheel axes and located so close to adjacent wheels as to lie in a substantially verti securing said iioor portions together with the cal plane which intersects the stub axles at that ñanges held in spaced relationship to simultane load distributing structuressecured to said stif feners and to said side floor portions, outer jour lying at least in part below the horizontal plane ROBERT A. sinnlos.