US1985983A - Mine car - Google Patents

Description

H. P. FIELD Jan. 1, 1935.

MINEV CAR 3 Sheets-Sheet l Filed April ,20, 1951 H. P. FILD Jan. l, 1935.

MINE CAR 3 Sheets-Sheet 2 Filed April 20, 1931 O Q Q avi.

Jan, l, 1935. H. P. FIELD 1,985,983

"MINE vCAR Filed April 20, 1951 3 sheets-sheet s' RAMEN). Y. "wm TILSN @wm Rd f QN Q III" n Q N I G Il IHTIIIILKHHHIIIIVI yl 7.8 R L@ D D D DI.. l 0 1 Nr! l ruldidfi- E .r m@ m vv m W .l h f. T w W f nll Imvllmvu n 0b Il rm n 4 S I- .l1 .Nml QM. f n l O -MTF Patented Jan.v 1, 1935 ,H n mammie; pagasgignor tonnerre.'

arca-poration New Jersey y reinos-annif invent-ion reletesfto corsQnd lios" floor portionlwhichfor thegrester port is arrangedina plane spaced below theioar axles. A further object or thisinyention is thepro-j.v

vision` of e mine carhaving a body glmrie,5113.3,!` and' resting- HpQnwarLaXIeMthebodsliincludzms body sills;` and1 afbottom `lowing al longitudinally i'. extendinga.,contrlf-floorportionL formed@ Ai :plus f rality `of connectedsections {the load supportingv surfaces of` -which are for the greater o rj ranged in -aplanespaxze'd belowivor .lower than. the car axles andbody sills. j Y v n wStill anotherobject `of-thisinventionis the provision of a new andimproved car bottom-for mineecrsf;l A still furtherobject-of this inventionjis the provisionA `of end dump mine orfhayingl'a. body supportediby andrestng on car laxles, the body including a. bottomg-havingjamcentrcl floor portion and side floor-portions oneither side thereof; the centralv oortvportion being a. fixed hidingl bottom and having .portions vthereof fai'- ranged, in*` avplane lowery ytharrtheongles. and having other portions upwardlyvsloping toward the dumping end of Y the body nvzherebyltci permit the free dischargepf ladingrfromrthe body-upon end dumping of the-car. n Other objects -andfadvantages ofrthisinvention will vbe apparent from the following description taken in conjunctionrwith theoccompnnying drawings in which: "5 *Figure 1 is a, sectionalview through; one end portion-thereof. il t wFig.y 2; is Aa. sectional view kkthronghV Athe opposite Y end portion' of the canthe sailend portionshow-4 ing anend gabe: j lrFig. 3 isian end viewof the sarlat ythegnte end thereof.

Fig. 4 yis a- Fig. 5@

vn .x. -Fg;.5is a brokentop planvievg of ythe cor;l certain parts being shown in section and other lports being shown lcrokierrewafay.`

Fig` '6 is a.` sectional View `1ig-.3. 'u t .A l'Ms a sectional view showingemodied formofxwheel hood and itsconnection. to-the can;

sectional `view.v onj `of l'ings -V which similqrg `cafard generally at 13.L

v idr car Iat Y `iloorportions may be `substantigllyhorizontally- KFig.8;iis n sectionalyiew showingy 'a5 forml of wheel housing and its connectionftothe car'bodyndrJf `Fig-- @is ,a Sectional :viewl-fsimilarimlnf, -6 *but Sho ing the; .Side-floor portiQnSS-.beinhori- Zontallyf manfred. inf:r .contrdtinten Lto. 4- the Referring now more. parulerlv'mthe'slmw: characters of. reference designgte similar .parts the several viewsnthe Q, the Present' nYenton CQmPSS-ar bdy in y dicated generally at A which; is mounted .on ,and

supported by aides yi2 carried by wheels 545,5 fthe bodyjvinclndingrside walls; vflxed -end. Wall-18,

Vsecuredto.the-side walls', an endgate 1,0 pivoted fthe sfide walls at lizfand bqrom wnichiis indi:

,mdr 'molded with:Sideinimffwhii. as moreplearly-shown in Fig, .3, projectinto the.V

ladingrwne 0f th) bdy .and `elvrilerid'.fjrrlfi;@ndi'Q0 endifthersof andere Seweoby .suifablewnnef 1610. end; sills 11,81 whim www@ sans, @f .eneontructions herenaltir mrfsrici-l callyy described, As shown clearly in EigQS, the connectorswhich secure thesillsztogthe, nxed end.A vgoll ofthe bodyare cornernngle's while connectors-at the gate endnof'thejcan-are the Preferablylusew t o .1- Y 1side sills 1r4lareipreferably bl'ilbfngles'gthe lowerl flanges 19 of-whichvareopposvitely arronged o and extend outwardlytogservefas attachingelef ments for side-floorpportionsqlformnglpgrts of Y the bottom B. and .arranges 0h echfidefih centr floorl portionv 22; 'side Hoor portionsv resting onthe uppervsnrfaces of thelowerenges 19 ofthezsills and being" secnredvvtheretoiby snitj able fasteners- Such rivets .24g-Inffis-i .the sidefloorv portions are clearly'showns intersecting the Dl fof the topscf the arlwhslsb is merelyby wayxofdexample as obviouslythe side arranged, :The side rgportionsnreV provided H which may assume any *desiredy form.- Asffei-Q .amples of the construction of thevheelhood's--H` have theirronter edges upwardly flangedl'sapt provides a wheel housing or hood which is rein;

forced or stiffened by the pressed filler member. Fig. 7 discloses a modification of the wheel housing construction, and-in this figurethesideqfloor portions 20 are indicated'iassbeing substan: .l tially horizontal whereby they intersect the planeE of the hubs of the wheels. The housing H Fig. 7 has a flanged connection to' the side walls' 6 similar to that shown in Fig. 4, butithe innert portion of said housing is downwardly bent as at 44andthen vertically 4flanged as at 46fto`rest against they side of the ller vblock 48V to which 'it is secured by suitable fasteners49; the flange V46 extending to"a pointsbstantially in contact with the side floor'portion 20. It is not'necessary that the wheel hoods extend tothe sidewalls 6, andas shown inl Fig. 8, they maybe secured by-suitable fasteners directly to the side floor portions 20 and to the webs of the side sills. The sills 14 carrythe'V load and may rest di? recftly upon the axles 2 which are shown ass'qu'are in cross section'(see Figs. l and- 2) "and extend through'brackets 50 secured to the lower flanges 19 of the sills by fastenersA 52""and'hravingV "por-1 tions 54 underlying the sills as shown more, clearly in Fig. 4. "I'hef 4drawingsare villustrative only; and obviously the axles need not be square in cross section. Further, it is not absolutely o essential that sills-114irest directly on the axles a'sthey may be connectedjthereto in anysuitable ordesired b manner. A' For stiifening the structure at thejaxles, angles-56fma'y be provided which may be secured `to the sills by thebefore mentionedfasteners'52,

the angles being rrelatively short vand extending onlysubstantially the distance covered by the arms ofthe brackets, as shown' clearly in Fig. 5.

The free'edges of the side floor'portions are preferably'upwardly flanged as at v"58 t define attaching portions for the side wallsf which are secured' thereto by suitable'fastenerssuhl asr rivets or'the like, and the fixed end wall 8 laps the vends of the sidewalls v6 and theadjacent side floor portions andis riveted thereto, asA clearly shownin Fig. 5.' For stiifening the body, braces 60 are-e1nployedwhich are connected to the yside walls andside floor portions and extend vdown-'- wardly and are connected tothe sidesr of the central floor portion 22,` asy hereinafter described. 'At the gate endj ofthe cara' belt 62 is provided which extends alongjthesidewalls and side floor portionsl end under 'the "body, as more clearly described hereinafter. f V Y f' -nt the gate end fof the Vcar, the yendl constructionincludes a Z4 bar 64 which extends from-side to side. of the body, the lower flange 66 thereof projecting outwardly -to'serve as a support for a bumper filler block 68' supportedalso by a bottom bumperplate-'IO rivetedto the end sill, as at 72, and extending rearwardly beyond the'web 74y of the' sill tofurn'ish asupporting medium for spaced gussetsfl rivetedther'eto andto the upper flange 78 ofsaid sill.';"A`s clearly shown,- the lower flange 66 of the yZfbar end silllextends between the side sillsrand'a shortdistance therebeyond. the'` remainder ofsaid lowerflange being removed and the remaining portions of the Z bar, which define an angle, are upwardly sloped toward the sides of the body (see Fig. 3) as shown at '77. The belt 62 underlies the upper flange 78 of the end sill for the entire length thereof and the ends of the side floor portions lap the belt 62 and are 'arranged in substantially abutting relation with the #contiguous edges ofthesupper flangeof the end sill and are connected thereto 4as by welding, as shown at 79. The belt 62, therefore, serves Inot only as a stiffening element, but also as a ypositive supporting medium for the ends of the 'side floor portions. The opposite ends of the side floor portions,` lare `supported by the inturned flanges 81 of the fixed end wall 8 and are secured thereto by suitablefasteners such as rivets or they like..v The `bumper at the gate end of the car also includes a 'top plate 80 and a channel-shaped frontiplate:` 82 which laps the top and bottom plates 8O and 70, respectively; the former overlying the top ilar'ig'e178vr ofthe endfsill.' At' the opposite end ofthe carth'eend sill comprises a channel,- the"upperand lower'ang'es 82 and 84 thereofextending outwardly, as-fshow'n clearly 184'I 'and faf'to'p ,cover plate 944 riveted to the `endsill asvclearlyfshown. Achannel shaped 'front bumper plate`96'is provided, theflanges of rwhich'overlie fthe' l'oott'om-v and'top' cover: plates, -the bumper structure vso far described being providedwith an opening f which receives 'al coupling 'pin -98 supported by aplate 100 upwardly flanged as at 102 and riveted v"at the flange tothe end wall 8 and the beforementioned angles 16,1the plate 100 extending from side sill to side sill `and being supported by and secured tothe upper-flange 8V2`of the end sill and 'serving 'also as aconnecting medium for the end wall 8 and the end sill, as will be apparent. 'l The central'floor portion 22 is continuous from end to *end of Ithe body fand, in the instance shown, is formed of Aaplurality of connected panshaped units, 'substantially similar in shape, and supportedv by theaxle 2, side sills andthe channel end-'sill at'one `end ofthe car and by the belt 62 andthe beforernentioned gussets 76 at 'the gate end'of the VFcar.` vWhile the central floor portion is shown4 as yformed of a plurality of units, it is within the scope ofthe present invention to form a central' oor portion of fa single unit, 4pressed orl bent, Aor' otherwise suitably formed' to the desired shape. l

The central floor portion units may be termed hoppers and in the car illustrated three thereof y are shown,` vnarn'elyLfront and rear hoppers 104 and 106, respectively, land anv intermediate hopper 108. The drawings disclose one embodiment of the central floor'fportion and the individual units thereof are formed as integral structures vbent or otherwisel formed to`r comprise `a bottom 110,'a vertically extending rear wall 112 and an upwardly sloping Afront wall 114 "the forward edge portion'of which is flanged as at 116 to provide a supporting surface. Formed 'integral with the units are'side wal1s118 which extend over and are connected to the webs 40 of the side sills l4,.as shown clearly'in Fig. 4, It is obvious that .if desired the central floor portion units may be formed of connected sections or portions to denethe figssseas p `bottoni i110, irontVv rearywalls' E 1-14 and 1512, respectively, and the before'mentionedside walls 118"ani=the' present invention is nott'o con- .sidered' as restrictedto a hopper ,constructed ofia singlefpie'ceof material. j i Y- v the .5 assembly of the oar", the individual? K4poel-stare.offsuch size thatthe side walls VLISftherei Y olwilllclosel'yf en'gagetliewebsv wofftheside sills` to be secured thereto by suitable fastenexssuchas thel'i'lvots shown, and the rear:l'io'pperv 106-ha`sits rear/wall 112 fitted againstthe web ofthe channel 'end sill ('see Fig. 1)l to,v be secured thereto` in any desired manner. The drawings disclose theior ward end #of hopper 106; which; iis-heretofore Ide-L scribed,` is upwardly sloping, with its harige" 116 resting upon and supported'by theadiacent axle 2, 'ma forward edge' and the edges er the' eme wens 118 abutting thevedgel fthe'rside'wallsrimdhe 'edge' yoi' attaching flange 120 formedfwithjthe l 1132` ci" hopper '108 andvis 'weldetjtf1the abutting edges," -as showniatg'lzz' "Witlnthisi struction, the axlesqdireotl' :fsipportgthecontigua ons` org1lijafrefrit".ly `o'i,.adjacentfhoppers', but

` iiQdesirei-athesaid 'edgesimay-fbeconsupporting elementsconnected `to the 1 receiving their support tromlthe axles: Also,v the adjacent edges .offadjajcenthop- Y the lading capacity of the car. .Y

'Itvisir to be `understood thatzthe axles Ziare arpeisvmaywbe" lapped and connected','within the spirit.` of this liiv'entioi'ie'v .Hopper-,10815; similar 't0 hopper 106 -with the exceptionthat the -rear wall l112:.tliereofL is provided with beiorementioned flange `120, which angeytogether withlthefilahse v 316, formed: at theopposite or'iront endfot hopper 108';A and whieh'refsts on the other axle v2, supports hopper lofas clearly `shownl in T. "f Hopper l104 issupportedby axle 2 andis connected tofhop-vr per 108l iny a manner similar tothef'connectiono! the hoppersio and 108,' and its upwardly sloping forward. 'end/,114 terminates adjacentl the edge of the upper 4flange T8 lo the Z-bar end sill andis weldedithere'to, as shown at 124., Foi-'giving additional support to hopper lotthe before mentioned I6 'provided which underlie the up'-y wardlv sloping front end 114 of hopper 104 'and' are securedzthereto by suitable fasteners such as the rivets shdwniclearly inPlg; 2.y to the slopingii'ront endgllof hopper 104 is a; drawbar `126 which extends -outwardly beyond' gate 10 of thefbowlin spacedfrelation to the bumper and serves to support aicoupling raixr12lln3g,` f i Y The car described herein provides a body-.1 oi great 4lading capacity `having s central floorportionrl-comprising a plurality of hopper` elements having. portions thereof denning'means for guiding ,thi-.finding toward the'gate end ofrthe car when the car is dumped, thus eliminatingltheruse of. independentaxle ho'usings'sunli` as are well knowxrin the art, and providing a constructionin whichevthe horizontal bottom portions' 110; of the hopper members may be :arranged atza.4 low level carv provides ancons'tructionin whichby simply removing the :bolts 52 which4 connect .theelaxle brackets tothe sills the both' may be from permitlreplacement ot parts when vcle-- siredgrf; 1 l f v "l It is believed therme eenssruetumV etnier the-:prentiinvention will beiully apparent to those'- fskilledl inf-the arti 'Ihe='drawings one embodiment ofthe. invention, butthey are for illustrative purposes only 'arid'f'the 'invention ,is not f restrictedl to the -speciflcidetails shown thereinras obviously fw'various, lchanges mayAv lbe fmadez'in the form'andvproportionstofftheconstruction shown l within the scope of the appenddclaims without f lewin? from the spirit of the invention; f -AffWh'at'is'claimedisz-yi f,

1. In a mine car, the combination oi aladingA `nectedA'toftl'xey end sills and lprojecting into Athe toxn'portions: of jthefisillsy'and a fixed .lading yboth'aving portions'itliereoi below: the' carfairlesr Y otherjlportions inclined upwardly'v topartially of the` body'firornlendto end thereof/'side floor portions secured to'fthef lower flanges of vthe side sills;csrI axles below"tlie bottomV anges'of the tures arranged between andf'connectedto the side sills-with portionsof their' -bottoi'ns arrangedfbethe' sills and projecting finto the lading zone` lowthe'fc'ar axles and'otherportions thereoiin- I clined upwardly to partiallyoverlapthe upper' surfaces'of thefcar axlesfwhereb'yfsaid structuresare transversely supported.

'53; 2In' a rninekietr,vv a having a central* iioor portion vganci-side iloorportions one'ach side thereotgir'endgate, a2 bar'eridf'sillat-the gate-end of the car, said side oor portions-having' one end arrahgdsubstantiallysin abutting r`relation with theed'ge fftlieupp ilangeoi the Z bar, and said centrel'floor-portion havin'gone'end upwardly in' clined with* its'r Vedgev arrangedin substantially abutting relation to the edge of the" .upper y.flange 12,4; finie mine cer; e portion and side `floor portions on each side there en entend-13ste;szfbaf end lsin at the gate end of 'thecar,= said "side from*v portions"` having one end' arranged substantially inrv abutting relationA Wthfthe'edge of theupper flange of the Z bar, andrsad central ifloor portion lhaving one end pwardlyfiriclinedwith its edgearrange'd in substantially abutting` relation Lto the edge' of the upper flange of the Z bargan'd an end i belt extendingacross the junction dened by-tl'ie abutsecured; L saidl. bottom comprising'frside ilo'or poi"- tionslsecuredto the loweriiangesfof the side sills anda centralfloor 'portion formed of connected units suspended from the side sills and eachfincludin'go horizontal portion. arranged in a plane lower'tlian'f'the car axles and having the front end thereof upwardly inclined, the ends yoffthe in' body having''a'. central floor Y clined portions and rear end-:portions .of adjacent uiiitsof Vthe centraliloorportion beingadjacently arranged over and supported by, theV car axlesgf filneamine car,='a1body comprisingsidewalls,

are secured, saidebottom comprisingefside. :licor` portions securedtov .the lower vflanges Aof :the .side sills;V and a central Inoor. portion formed-lofiv connected :units suspended .from .the side-sills. and each including a horizontal vportion arrangedfin a plane lower thanthe caraxles Vand vhavingathe frontend thereof-upwardly inclined, .the ends of the inclined l.portions.beirig. weldedV togtherrear end portions of adjacent units and the 'said united portions being arranged over and. supported-by the car axles. q J

'7. In a 4mine car; a body,I side s'ills,;car` axles below the bottom portionV of the side sills, and a central floor portion formed of a pluralityof units each comprising a pan-shaped structure having side @walls rlapping and secured -to Athe side sills, a horizontal portion .arranged in a plane spaced below the side sills and axles and having itsflforward end portion upwardly inclined .and a; rear end wall, the forward edges ofthe inclined portionspand the rear edgesof the rear .end walls of adjacent units being.A contiguously .arrange and welded together over the car axles.y A

8. In amine car, a body, side sills,fcar axles below thebottom. portion of the side sills,jand. a central floor portionjiormed ofl a -plurality of units each comprising a pan-shaped structure havingside wallslapping and secured tothe webs of the side sills.. ahorizontalfportion arrangedin a plane spaced below. the side, sills and axles and having its forward end portion upwardly inclined and.- a rear end wall, `theedges,oLthe/inclined portions and rear end HWallsof adjacent `units being contiguously arranged and welded together over the caraxles.Av i

' 9. Ina minel car, an axleda bottom unit prising a'panshaped structure havingl side Wallys,

a. substantially vertical rear end wall connecting' said side walls; and having a vflange-,projectingv from the freeedge Ithereof so formedandtarq-y ranged as vto lie over and on said ax1e,andV a bottom Wall having a portion thereof upwardly inclined. i 10.- In an enddump minecar, sidewalls, an end gate pivoted thereto, an end sill, sidey sills, an axle below the bottom portion of theside sills, and a pan-*shapedbottom unit havingavertical rear wall with its free edge horizontally anged to be supported by the axle and havingits. front wall upwardly inclined with its edge arranged in ysub-A stantially abuttingrelation with thegendsillfand 11. In a,;mine car,1sidewalls-,v an end-gate pivoted to .the y side walls, aA Z* bari endsill having its lower iiange outwardly extended, laabumpjer connected to the end sill v'and including a. bottom bumper plate extending rearwardly, beyond'cthe web of the end -sill,.a c'araxle, and a bottomunit supported at oneendby the axle and halvngits opposite end upwardly inclined. with-:itsedge' arranged' adjacent the edge of the .upper ilange of the end sill and welded thereto, and gussets-.se. cured to the bottom bumper plate, ,the endsill andthe inclinedportion of the bottom unit..'

12. In a mine car, a body, side sillscar ,axlesbelow the bottom-portions of the sidesillsfand a bottom .comprising pan-shapedstructures .secured to ,the webs of thev side sills .and Yhaving their' adjacent edges l arranged in substantially abutting relation over and upon the car axles whereby adjacent end portions vof adjacent panshaped` structures are` directly supportedby saidaxles, a Z bar end sill, the pan-shaped 'structure adjacent/the Z bar endsill having vits'forward edge arranged contiguou'sto the upperange of the end-sill and welded thereto. I n

,.;-;13. In a minefcar,a,.body,bulbfangle'side sills,l

car axles arrangedbelowfthe bottom sportionsecf the side sills, wheelssupportingsaid axles, and a carfbottom 'comprising a `central vfloorl portion -and side floor portions, the latter vintersecting'the c oneend ofthe car; achannel vend sill at the oppory site end ofthe cana. fixed end wall,.cornerangles secured to. theaiixedendwall'and tothe side sills and channel end :sill forconnectingsa'id fixed end wall'to'the e'nd.sill, side floor vportions secured to the :bottom ilangesof. theside sills whereby the latter project intothe lading zoneofj the Abody from end jto end-thereof, Aa'nd a; central floor .portion secured vto the vwebs of `the side sills-and Ahaving portions .thereof in ,a plane -lower ythan thev axles and otherportionsiupwardly inclined to overlie and besupported by theaxles, an end gate,v the inclined portions of the central floor-,portion slopingfupwardlyftoward .theend gate andthe inclined portion-adjacent the endgate terminating adjacent the edgeof'theupperflange ofthe'Z bar end sill and being weldedthereto, and gussets con-v nected: ,stop-thee Z -gbar -end sill yand to .the f central oor f portionv f forfsupportingl the f latter I adjacent .the-end gate. i s

15: A, mine car floor Vcomprising ay plurality of units arranged end-.to end and having their adjacent,endportionsupwardly bent, each Ipair of said portions. .'.deining fan axle housing,l thel adjacent edgesfof adjacent.. units ybeing arranged in `:con-

nected abuttinggrelation-` and saidadjacent' end portionsbeingso formed as torest. directly upon car axlesat .theabutting connected portions.

f 1663A mine carlloor comprising tavpluralityof units arranged end -to end withtheir adjacent end portions'- upwardly bent :to 'define axlel housings;

and secured tothe sills and having a` lading sup.-

porting portion 'arranged in 'ai plane; spaced lbelow thesills and axles.v f

- w18. yInfaimine car, axles, klongii'fudinal sills Aarv` rangedin laplan'e 'above-and resting on the axles,

anda car floor secured tothe sills andlhaving por tions thereof. arranged. i'n planes lowerthan the sills and axles.. .f i. 119. In a.1nine.car,axles, longitudinal sills` arranged in asplaneaboye and restingfon the axles',

and a car' floor-secured. to the sills'andfarran'ged in a plane spaced below the sills and axles;

20. In amine cana body comprisingside walls, end walls, bulb angleI sidesills projecting into the lading zone ofthe body, car axles belowvthe bottorn` Iportions of-A the sidel sills,=and-a bottom, said bottom comprising a central oorportion and side iloor' portions onv eachzsidefthereof, said central floor portionincluding a'pluralityy of units'arranged end to end :with their adjacent end portions .deflected upwardly andfarrangedv 'over and supported by said axles* i v21. IIna mine car, afbody comprising sidewalls, end wallsandabottom, side-sillsprojecting into the lading zone of `the body, car axlesbelow the bottomportionsof vthe sidesills'a'n'd a bottom in-` cludingaentraI-oor portion secured to the sills Lacasse and formed of a pluralityof units arranged end to end with adjacent end portionsdeected from the main plane of said units and arranged over and supported by the axles.

22. In a mine car, a body, axles, side sills above the axles and supported thereby and projecting into the lading Zone of the body, an end sill, said side sills terminating short of said end sillmeans connecting the side sills and end sill, and a plurality of longitudinally alined floor units arranged between and connected to the said sills, said units having portions thereof arranged in a plane below the axles and having their adjacent end portions upwardly deected and connected to dene axle housings enclosing and supported by the axles. ,y

, 23. In a. mine car, the combination of a lading body having an end gate, end sills, side sills connectedto the end sills, car axles arranged below the bottom portions of the sills and on which the sills rest, and a stationary lading bottom having portionsv thereof spaced below the car yaxles and sills and integral vertical flanges connected to vsaid side sills and by which th bottom portions are supported. I

24. In a mine car, the combination of a lad.- ing body, end sills, bulb angle side sills connected to the end sills, side floor portions secured to the lower flanges of the side sills, car

axles below the bottom flanges of the side sills, and a plurality of pan-shaped structures arranged between and connected to the side sills with portions of their bottoms arranged below the car axles and having vertical flanges lapping and being connected to the side sills.

25. In a mine car, a body comprising side walls, end walls, bulb angle side sills, car axles below the bottom portions of the side sills and on which the sldetsills rest, .and a bottom comprising a central floor portion arranged in a plane spaced below the side sills andy integral `vertical side anges riveted directly to said sidesills.

26. In a mine car, a body comprising side walls,

a fixed end wall, an end gate and a bottom, bulb angle side sills spaced above the normal plane of said bottom, car axles below bottom portions of the side sills but above the normal i plane of the bottom, end sills to which the side sills are secured, said bottom comprising side floor portions secured to ,the lower fianges of the side sills and a central floor portion formed of vconnected units suspended from the side sills.

27. In a mine car, side si1ls, a Z bar end sill at one end of the car, av channel end sill at the opposite end `of the car, axles, a fixed end wall, and a central floor portion secured to the webs of the side sills and having portions thereof a plane spaced below the sills and axles and other portions upwardly inclined to overlie and be supported by the axles.

28. In a mine car, a. pair of axles arranged in spaced relation, a bottomunitcomprising a panshaped structure having side walls, a substantially vertical rear end wall connecting 'said side wallsV and having a ilange projecting from the free clined with its free edge portion arranged over and on the other axle.

29. In a mine car, a body, axles, Vlongitudinal body sills projecting into the lading zone ofthe body and arranged in a plane above and resting directly upon the axles, and a car oor suspended from the sills and having yportionsthereof varranged in a plane spaced below the axlesand body sills.

` HENRY P.) FIELD.

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