US1061818A - Dumping-car. - Google Patents

Description

6 SHEETS-SHEET 2.

Ptented May 13, 1913.

DUMPING GAR.

APPLICATION FILED JAN. a, 1911.

A. .GHRISTIANSON.

'Kwam mi@ A. w|TNEss|-:s. j W. fue@ VM A. CHRISTIANSON. DUMPING GAB. APPLIouIoN FILED n3. a,- 1911;.

1,061,818. v Patented May13,1913.

6 SHEETS-SHEET 3.

A. GHRISTIANSON. vDUMIING GAR. lAPPLIUATION FILED JAN. 3, 1911.

1,061,818; Pnted May 13, 11913.

' .l ssamm-usm 4.

- FIG. 4

A.- GHRISTIANSON'.

DUMPING GAR.

APPLICATION FILED JAN. l3, 1911.

Patented May 13, 1913.

6 SHEETS-SHEET 5.

WITN ESSES.

mvEN-ron.

A. CHRISIIANSON.`

DUMPING' CAB. LPPLIOATION FILED JAN. 3, 1911.

Patented May 13, 1913.

8 SHEETS-SHEET 8.

FIG, e

WITNESS-Es.

UNITED srArEs PATENT oFFicE.

Tp 'all 'whom t may concern.'

Y 'PENNSYLVANIA i ANDREW CHRISTIANSON, OF BUTLER, PENNSYLVANIA, ASIGNOR TO STANDARD STEEL CAR COMPANY, F PITTSBURGH,

PENNSYLVANIA, -A CORPORATION 0F DUMP:ive-CAR.k

`'Be -it known that I, ANDREW CHRISTIAN- in the county of Butler and State of Pennsylvania, have invented a new and useful Improvenu'mt in Dumping-Cars;,and I do hereby declare-the following to be a full, clear, and 'exact dei scrifption thereof.

My invention relates to dumping cars and particularly that class of such cars which jem'ploy tilting bodies and displaceablesldes. Its object is to provide an improved dliinping car having simple and improved fmeans'for raising the displaceablesides or doors-when the box or body 4is tilted, and

A*lnoref 'especially having an improved arfrangement` and construction of body tilting mechanism including fluid pressure cylinfders; andf to provide an improved Huid pressuresystem carried on each car of a train and adapted to both dump the tilting box and return it automatically to normal gposition, the said system being set in action either v0n each individual car, or collectively intlie cars of a train from a single point,

fetich as the engine.

fTo these ends my invention contemplates, generally, a tilting box or body of any detype carried pivotally on the trucks or preferably ona truck frame 'extending between the wheels at the opposite ends of, the

` car,\"and displaceable side members which are' pivotally carried on the ends of the box or bdyfby an arm pivoted thereto, each arm being raised in dumping by a link pivotedto the: arm andfsupported upon the truckframe, the link"'on the oppo-site side offthe car being guideti upwardly by a pin in- Aa""'slotted bracket;` attached to' the truck frame.

.""My, invention also'v contemplates, generf'ally, a box-tilting device comprisingfluid -pressure cylinders oppositely disposed on the truck framefsupportingand dumping arms pivoted to' the car body abovfthe' cylinders and eachr 'provided With engaging means'comprising preferably a slot having anwoif-set near itslower-end, and a pin or like elementca'rried' by the' piston and playing'in 'said :s'lfot''to-tilt 'the-'box toward the opposite sidegwhenthepi'n ispositioned in v.the oft-set by suitable; means,I orto allow for tilting towardf-thesame sideby the "oppoxsite cylinder' ywlenfthe ,dumping --arm is moved by suitable means hereinafter de Specicatlonfof Letters Patent. Applicationdlled Ianpary 3, 1911.\ vSerial IIa-600,563.

4'ertting therewith by which automatically returned to initial or lowered 70 'Patented May 13,1913.

wardly in the slot.

'My invention also comprises, generally,

such improved means connecting each` of the pistons to )the supporting and dumping mechanism carried by the opposite piston and adapted to be actuated to release,v the said* opposite dumping" mechanism tov per- Irlt of the dumping toward the opposite s e.

fSMy invention--also contemplates-an improved fluidi. pressure system for actuating the 'cylinders and novel mechanism copthe pistons are pxos'i-tionI when the box is dumped. This arrangement or construction includes preferably an air reservoir carried on the car, and adapted 'to be maintained at lthe required pressure automatically by a check valve contr'ollinga 'connection with the train air- A brake.' "pipe,i ajn .auxiliary trainair-pipe, a triplcf'valve-oonnectcdsto and operated by theisame,"jd=a connection leading from saidf'ai'r reservoir to the cylinder, and controlled'by-sad' triple valve,being set inl actifonolvhen4 it' is desired to' dump the car towardthe opposite side, and another valve Controlling'v said connection and automatically a'cti'l'ated by the `piston when the dump sol ing movementuscompleted to exhaust the air beneath the'piston, the. said valvebeing automaticallydnoved to restore the connection between th'tiple valve and the cylinder when the piston-returns to normal po-` sition.

In the accompanying drawings illustratingvoneembodiment ofmy invention, Fig ure l'ls'ia side elevation of a: railroad car partly in ,section illustrating diagrammatically vmy inventionas applied: thereto. Fig.,

'2 is a plan view of the'same.- Fig. 3is' an end 'View illustrating the car side "raising mechanism. Fig.` 4 is a 'vertical Asection taken near the center ofthe car vand illustrating the dumping mechanism in normal position. -Fig 5 is a transverse section loo-king downwardly 'on vthe line 5-#5 Fig.

4. Fig. 6 is av view similar to Flg. 4illustrat-ing the position of the dumping mechamsm whenv the tilting body isjin ,dumping4 position. F1g. 7 is a detail view/on an en#- larged scale, partly in vertical section, of a Y fluidp'pressure cylinder Vand itslcon'nections, and Fig. 8 is a like view illustrating the?r connecting Y and releasing mechanism 'extending across thev car between two cylinders.

much of the showing in the accompanylng.

ldrawings is .diagrammatic merely; and that the construction of car, its method of pivoting, and the device for raising the displaceable sides. canl be varied widely or at will without in any manner adecting the auomatic and \improved means employed or tilting the body.

The displaceable side members 5 extend lengthwise of the car body 1 at its side and are carried on brackets or arms 6 pivotally mounted on each end 7 of 'the car box 1. The arms 6 are preferably in the form of brackets of V-shape and rigidly carrying each car side or door 5, although any other form of arm may be employed if desired. Each. @preferably being. reinforced by a pocket iece anged to extend in a nearly'verticaldirection to the truckframe 2,- so that when the car body is in normal. horizontal position the link 8 will just fail to bear upon the said truck frame or any part rigid therewith,

Vand thereby tend to raise the door or side 5. Each link 8 is provided at its lower end with a pin 11 which plays in the slot 13 of vthe bracket, 14 lrigidly attachedl to 'the truck -frame 2 and extending upwardly at an in-` ward incline therefrom to actas a guide for the link 8 andpermit the dumping ofthe box toward the opposite side in, each case. Thus, as illustrated in dotted lines in Fig. 3, when the tilting body is turned over by the dumping mechanism to'be hereinafter described, the link 8 Von the side raised assumes the position illustrated in dotted lines to the right .of i the 'y center -of Fig. 3 or in Fig. 6. The lower end of the link 8 on the side depressed cannot move downwardly owing to its engagement with the end ofthe slot in the bracket 14, but is `free to pivot about said end in said slot, and

acts to raise the side member 5 as illustrated in said figure, so as to' permit of the dumping actioni When theA car body is returned to ppsition the displaced car side is allowed to return to normal position, the link 8 and inclined bracket. guide 14 tending to some extent to hold the sides in lplace againstac-- cidental displacement; although these parts 1 performno function whatever in maintain.

ing the car body, in alinement.

The dumping cylinders 16 vand 16 are' arm 6 is pivoted to a link 8, the pivot l 10 on the bracket 6. The link 8 is arpreferably positioned at or near themiddle of the car as illustrated in Figs. 1 and 2 and disposed oppositely to each other, although i't will be understood that a greater number of cylinders than the two illustrated might be employed if necessary, and that their relative position could be varied to some extent without in any manner affecting the spirit of my invention'. The dumping cylinders 16 and 16 are actuated from a fluid pressure reservoir. 17 carried preferably on the middle of the truck frame 2 as illustratedv in' Figs. 2 and 6 and connected by means of the pipe 18 provided with a check valve 19 to the main ytrain vair pipe or air brake pipe 20. The check valve 19 provides for the automatic maintaining o f the air pressure within the reservoir 17 when this pressure is lowered by using the air in the reservoir 17 to actuate the cylinders. The connecting pipe 21 leads from the reservoir 17 to the cross pipe 22 connected with the ytriple valves 23 and 23', which are connected respectively with the cylinders 16 and 16 by the pipes 24 and 24. The triple valves 23 and 23 (diagrammatically illustrated) are connected by means of the pipes 25 and 25', respectively, with the auxiliary train pipes 26 and 26. The said train pipes are provided at the ends. of each car with the couplings 27, 27, and with the exhaust valve 28, preferably at one end.

The cylinder 16 is provided with the piston 30, consisting of the piston head 31 and the piston rod 32. The pipe 24 is provided with the exhaust valve 33, and the pipe 24 with the valve 33. The valve 33 in normal position Vhas the pass 35 maintaining the lconnection between the pipe 24 and the port 36, and is controlled by the lever arm 37 adapted whenraised to openthe by pass 38 and put the port 36 in communication with the exhaust 39. The valve 33 is maintained 1n .nor-malposition .by the compression spring 40 around the valve rod 41, which is pivoted to the lever 37 and provided with the ofi' set-'or hooked arm 42 extending into thev cylinder 16.

Disregarding for the present the working of the box.A movingmechanism proper, the operation of the piston actuatingv and controlling device is as follows: When it is desiredto dump the car toward the left hand side in the drawing the pressure in the auxiliary train pipe 26 is 4reduced by opening the valve 27` at the end of the car; or if it is intended to dump all the cars of the train embodying my invention, the train pipe 26 may be exhausted by an engineers valve on the engine, in which case all the cars will be dumped simultaneously. rPhe -reduction of pressure within the train pipe 26Lset's in" action the triple valve 23, asis well openscommunication between the reservoir understood by those skilled in the art, andl 35 ately actuated to open the exhaust and cut oil the admission of air. -The valve in effect I -17 and the cylinder 16 below the piston heady f 31 and through the connecting passage, consisting in the embodiment shown -of the pipes 21, 22, and 24 and the port 36. The

.v piston is then Quickly raised, sufficient air pressure .being transferred to the cylinder` 16 to raise the piston itsfull stroke andl dump. the car. As soon as the piston head 31 strikes the arm 42l of thevalve rod. 41, the said valve rod is raised against the re- 'sistance vofthe spring 40 and the incomingV air at pressurel in the pipe 24 isshut off from the port 36, the said port bein'g connected with the exhaust 39. This results in quickly .exhausting the air within the cylinder 16.

The piston 30, however, is maintained in l raised position b the tilted body or box 1` and connecting umping mechanism to be described below. As soon as it is desired to return the box 1 to normal position, the dumping having been completed, the opposite cylinder 16 is actuated by reducing the pressure within the auxiliary train pipe 26 in either of the ways described above, and the box righted This permits. the pist-on 3-0 to return downwardly to its initial position, at the same time releasing the hook 42.

of the valve rod 41 and permitting the coil spring 401to return l,the valve 33 to the position illustrated in Fig. 7.'

It isevident from a' considerat-ion of the operation of the `valve33 that lonly somuch air is admitted inl dumping to the cylinder 16 as will suffice to raise the piston 30 its full stroke, as the valve 33 is then immediperforms a similar function automatically to that performedby an engineers check valve on the.locomot1ve. llVhencommuni- .cation is resumed between the pipe' 24 and the port 36 the said pipe will have been cut oli from the reservoir 17 bythe action of the triple valve 23,` as is well understood in this art.

By my invention I 4provide box tilting or ,dumping mechanism connecting the cylinders, or more properly the pistons with the tilting box 1, which performs ther double :function of tilting the box .1 and of sup-y porting it securely in horizontal position whennot tilted. It is apparent, therefore, that means mustV be provided for releasingthe supporting andi dumping connections between theopposite cylinder 16and. the box 1 when'the box is tilted through the actuation of the -cylinder 16. The piston rod 32 is of sleeveform, as/shown clearly in Fig. 7,

Y and contains the stern- 45v extending d,own,

wardly from the cross' head. 46. The come pression` spring 47 is coiled around .the stem :45 amilfl confined-by the piston rod 32 and @panama-'46. 'The @ross-head 4ta-travels upwardly-along the crossj.head guide -4'58 bolted to the. cylinder-head 70, andv adapted to take, the side thrusts of? Vthe wei'ghtof being provided with a guide 48 as illusof the dumpand 51 have the corresponding off- sets 53 and 53 extending substantially at right" angles tothelongitudinal portions of said slots and receiving the pins or 50", re. sp'ectively, in the normal position of the'` body las illust-rated in Figs. 4 and 7.

Y The pin 50 has a latch 54 rigid therewith and provided with a-cam 55 which abuts vagainst the inner cam face 56 of a lug 57 illustrated asboltedto the olf-set portion 53 of the dumping arm 52. The opposite arm 52 is in lowered position, by the spring 59 attached to the cylinder 16. The spring 59 acts to'maintain the dumpingarm 52 in nearly vertical posit-ion as illustrated when the dumping body is horizontal so that the pin 50 is in'engagement with the off-set 53 of the slot 51.

The bell crank lever 460 is pivotallyv supported upon the cylinder' 16 and has a lower larm 61 normally engaging the latch Its upper arm'62 lis pivotally connected to the' tension 'rod 63 extending across the car to pivotally connect with the lower arm 65 of the bell crank lever 66 The 11p-per arm 67 of the said leve-r 66 is provided preferably wit-ha roller or pin 68 engaged by the upwardly movable cam rod 69 of t-he cylinder 16. The-cylinder-l is of course'likewise provided with 'the cam rod 69', 'which is attached to the-piston head 31 and upwardly through the cylinder head 70, being provided' at its upper end with the cam face 71 engaging 'with the roller 68 carried by the upper arm-67 of the bell crank level' 66", which is pivotally supported, as upon the cylinder head 70, and has,its lower arm 65 pivotallyconnected to the tension rod 63 correspondin to the tension rod 63, and extends across t e car to engage with the upper arm 62"'01l the bell crank lever 460 having it's lower arm '61 in engagement with the latch 54.

" It willbe. noted that the above described parts are .symmetrical in the preferred form of' my invention, the two tension rods 63 andi 63 I'connecting conversely correspondingl bell. crank levers at their opposite ends.

The dumping arms 52 and 52 are pivotally connected to the dumping box l on op-. -posite sides'of the central, pivot bracket 3, being preferably arrangedfinlpairs as illustrated in Figs. 1 and.5,each arm of a lface 58 of the lug 57 is engaged, when the extends 35 downwardly.

pair being at opposite ends of a pivot pin 50.

5 dumping box body 1. The pivot brackets 3 are fastened tothe center sill 73 of the box 1 and the pivot brackets 4 to thelongitudinal member or hollow center sill 74 of` the truck frame 2, within which is carried the air4 reservoir 17. The cylinders 16 and 16 are conveniently carried by the bracket* 75 supported. by the suspender bracket 76l attached to the sill 74.

The operation of my improved dumping apparatus is as Ifollows:l When air' is admitted below the piston head 31, as described above, the said piston head is raised, carrying with it the sleeved piston rod 32 and' cam rod 69. The cam face 71 in engagement with the roller 68 immediately operates the bell crank lever 66 to vaotuate the tension rod 63.V This oper'ation is comple-te before the cross head 46 is moved upwardly, on account of the compressibility of the spring47`about the stem45. The tension rod 63 draws to the right in the figures, the upper arm 62 ofsthebell crank lever 60 thereby raising its lower arm 61 to move the latch 54. The dog or cam 55 is thereby depressed, and forces the lug 57 andwith it the dumping arm 52 outwardly. This eects the movement outwardly of the cti-set portion 53 of the slot 51.` to position the pin 50 within the lower end'of the longitudinal this time been compressed to the full extent provided for, and the stem -of the cross head 46 has reached the piston head 31 so that the dumping arm 52 is actuated upwardly by the moving piston 30 to dump the bo-x 1, assuming at the -endrof its travel the position illust-rated in Figs. 6 and 8. The dumping arm 52 is permitted to move `downwardly by the pin '50 traveling up- '.-5 wardly within the Vslot 51. The box 1- is now completely dumped and its contents` emptied, the Icylinder 16-beiug exhausted as ydescribed above. W'hen it is desired to right the box 1 the auxiliary train pipe 26 is ex- 50 hausted and 'air admitted to 'thev cylinder 16. to raise the pin 50 abutting-against the upper end of the slot 51. This returns the boxlto normal position, the opposite dump.-4 ing arm 52and cross'head 45 being carried; The cylinder 1 6 is exhausted automatically when the endl-,of its stroke,v

is reached and returnsby Vgravity to initial position. The partsV are then again in the posit-ion illustrated in Fig. 4, the :spring 59. .0 having returnedo the dumping arm 52 to position the pin 50 within the oli-set portion 53 of its slot. The cross head guides 48 and 48 take lthe .side thrusts of the cross head due tothe weight of the box 5 when the car is dumped toward the opposite portion 'of said slot. The spring 47 has by' side in each case, so that the construction is a durable and strong one as well as substantially automatic in operation, as the only manualloperation consists in exhausting the train pipes 26 and 26', respectivelv;

What I claim is:

1. In dumping cars havinga tilting body,

the combination of oppositely disposed iuid pressure cylinders provided with pistons, dumping mechanism connecting each of said pistons and the tilting body and adapted to normally support the same in horizontaly position and means actuated by each of said pistons when set in action to release the dumping mechanism of the opposite piston and permit dumping toward the opposite side.

2. In dumping cars having a tilting body, the combination of oppositely disposed iiuid pressure cylinders provided with Vpistons adapted to be independently set in action, dumping mechanism connecting each of said pistons to opposite sides ofthe tilting body and normally supporting said bodyin horizontaly position, and releasing mehanism between said cylinders and adapted to be actuated by the initial movement of each of said pistons when set in action to release the dumping mechanism of the opposite cylinder, the further movementof said piston operating to dump the body toward the opposite side.

3. In dumping carsthe combination with a truckframe and a tilting body thereon, of means' for supporting said body in horizontal position arranged on opposite sides of the truck frame, a tluid pressure cylinder provided with a piston coperating therewith and adapted to raise said supporting means onone sidev to tilt the body, and mechanism connectin lease the same on the initial movement ot said piston.

4. In dumping cars the combination with pressure cylinders 4provided with pistons, and dumping connections between each of Y said piston to the supporting means of t eopposite side to rey a tilting body, of oppositely disposed Huid said pistons-,andthe tilting body and adapted to support the same normally in horizontal position, a rod`carried by each ot/said pistons, bell crank levers -actuated 'thereby,

andtension rods connecting the same and adapted to release the dumping'mechanism of the opposite piston when one of the cylinj ders is set in action. 5. In dumping cars the combination with a tilting body and truck frame supporting the same, of dumping means oppositely disposed beneath said tilting body. and adapted to hold the same normally in horizontal po sition and including fluid pressure cylindersprovided with pistons, a cross head actuatedl by each of said pistonswhen separately set Vin action, but V movable relatively uthereto on4 .rod oarriedby each the initial movement of the piston, a cam pistomabell crank lever actuated thereby, i and .mechanism Connecting the sameto the ,opposite dumping meansf t0 release the same :oni the initialv movement of the said pistonl and permit thebody to be dumped y towardthe oppositesidejv f 64I-In dumping cars.,v the combination withv a` tilt-ing body and atruckt frame supporting the same, of supporting dumping means op -positely disposedbeneath said tilting body and yadapted to hold the Isamev normally in horizontal position, said dumping -means including a rfluid. pressure ycylinder provided WithfarI piston, 4a ycross head actuated by said ',pistombut movable relatively to said piston nthe initial movementthereof, a connecf tion between saidcrosshead andthe tilting body, a cam rodcarried by Sld Pistonfa y lever/actuated ther eby, a rod connected toy said lever, andan arm actuated by saidrod and adapted to release the oppositesupporting means on the initial movement' of afore` said piston to permit fthe tilting body to be dumpedtoward theoppositeside f y 7.'In dumpingcars the combination With a truck, a tilting body, and means vfor sup.- porting said .body, of at fluid pressure cylinder provided with a piston, a cross headl ace. tuated by said piston, 'a lspring between said cross head and said piston adapted to yield on the initial movement of the piston, and means connecting said piston to said supporting, means to release the same ,on said initial movement and permit the tilting of the body, the said cross head Abeing actuated by said piston on its `further movement to tilt ,the body. f

8. Iny dumping-cars the combination vvitlf` a tilting body and a truck carrying the same,"

of a fluid' pressure cylinder having a piston, dumping connections between said piston and said tilting body including a cross heady actuated by said piston,'said piston havinga hollow piston rod, and said cross head having alstcm movable vvithin saidv rod, a com-r pression spring arrangedbetween said stem and said rod, and permitting their relative movement on the initial movement ofthe piston, .supporting means cooperating With aforesald dumping connection to nmaintain the tilting body in normal `positiomand mechanism vconnecting said p1s'ton'tosaid supporting means to release the same .When the piston is actuated.

.9. In dumpingcafrs the-combinationwith a tilting bod-y and a truck frame carrying the same,

by said.v truckframe, supporting means con' necting. said cylinder-to said body andprovided-With Vay .cross head actuated by said cylinder, a piston-'within said cylinder pro'- vided with a sleeve,

-a rod rigidly attached to the piston head, a stem on said cross head porting means on r*a Struck, of a a tiltingbody and .porting the same,

frocally movable by said thereby and movable in ,a tilting body,

able thereby',

of .a Huid pressure cylinder carried Ymeansfor ment With said off-set when dumping the body toward the opposite side and permit-j ting said pin to travel insaid slot when dumping towardthe sam sside.

movable in said sleeve and a spring opposing said motion, supporting means oppositely arranged relative to thef point ofsupport of said body andadapted to maintain the' same 1n normal position, actuated by said rod and releasingmechanism i to` release 'said `sup` thev initial movement of".

thev piston, saidl stem yabuttingfagainst the Ward the opposite side on the --furthenmove ment ofthe piston.

'fluid y'pressure cylinder 'and a piston head to 'raise the supportingf'mecha-f-- nism above vthe same and-- dumpy the 'cartol i .10.l In dumping cars theicombination with ltilting body supported At-hereon,"a cross'fhead reciprocally `movable by said cylinder, and 'w80' an-arm pivote'd'to said body and pivotally connected to said cross head, substantially as described, 11. f In dumping 4carsthe combination with a truck pivotally suppositioned on opposite sides of the point of of fluid pressure cylinders l pivotal support and pr'ovi'dedvvith pistons,

an arm pivotally pistons andconnected to said tilting body,

connected t0 each-.of said eo 'andv means forl disengaging-said pivotalcolb nection of one of said'arms when' theI body tially as described.

l2.` In dumping cars the combinationwith a trucle of a body tiltably supported thereon, a fluid pressure cylinder,

iis. raised by the opposite cylinder, substan-^ across head recipe vcyllnder, an arm L pivoted at its upper end to said tilting body l' and provided with a disengaging connection with saidv cross head, and carried byfsaid cylinder and adapted to take the-f side thrust l of ,the

having a vpiston and -a pin reciprooally mov'- van arm pivotally 4connected to '.saidbody and provided -with a `longitud1- off a fluid pressure cylinder v a cross head yguide v cross head when .raised 1n engagement with saidv arm.

dumping arm piv-y of a fluid pressure cylindema y pivoted to the body and pronally' extending slot having an off-set adaptedto be .engaged by said pin, and maintaining said pinin engage 16.1'In dumping cars the combination with a' truck and a tilting body pivotally carried thereon, fluid pressure cylinders positioned on opposite sides of's'aid truck frame and provided with pistons, arms pivoted to opposite sides of said tilting body and provided near their lower ends, engaging means for engagement with said off-sets reciprocally movable by said pistons, and mechanism said pistons to move y from lthe off-set in its slot 'to permit the car adapted to be actuated by each vof said pistons for disengagin said engaging means carried bythe opposlte piston when the tilting body is dumped toward the opposite s1 e.

17. In dumping cars, the combinationv of a truck frame, a tilting body thereon, fluid pressure cylinders oppositely disposed relative to said body, dumping arms connected to said body, pistons in said cylinders and pinsltcarried by said pistons adapted to actuate 'said arms and provided with latches, bell crank levers movable' by said pistons respectively, and oppositely disposed pivoted/arms each connected to one of said vbell crank levers to actuate the ,oppositek latch and move its pin to permit the car to be dumped.

18. In dumping cars the combination with a tilting body of oppositely disposed fluid pressure cylinders .provided with pistons, dumping arms connected to said body and having longitudinally extending slots provided near their lower ends with oit sets, pins carried by said pistons movable in said slots and provided with latches and cams actuated by said latches, cam faces on said dumping arms adapted to engage with cams, and mechanism actuated by each of the latch carried by the opposite pin and thereby disengage the same to be dumped.

19. In dumping cars the combination with a tilting body of oppositely disposed fiuid pressure cylinders provided with pistons, dumping arms connected'to said body and having longitudinally extending slots each provided near its lower end with an off-set,

'pins carried by said pistons movable in said slotsand Vprovided with latches and cams actuated by said latches, cam faces on said dumping arms adapted to engage with said cams, resilient means for maintaining said pins within said off-sets when the body is in normal horizontal position, and mechanism actuated by each of said pistons to move the latch of the opposite pin and thereby move the opposite dumping arm to disengage its` pin from the off-set in its slot and thereby permit dumping by movement of said pin withinsaid slot.

20. In dumping cars the combination with a tilting body and oppositely disposed fluid pressurev cylinders, of arms pivoted to said body, pins reciprocally mova le by the cylwith longitudinal slots having off-setsY said inderpistons', camscarried bysaid arms and said pins respectively and adapted to interchange, means-for maintaining said pins in engagement with the lower portions 'of said arms, and mechanism actuated by each of said pistons to move the cams of the opposite piston and disengage said pins from the lower portion of said arms, substantially as described. y

21. In dumping cars the combination with a tilting bodyof fluid pressure cylinders oppositely disposed and rovided with pistons, arms pivoted to said ody and pins connected to said pistons and said arms respectively and adapted to normally support said body in horizontal position, cam faces carried by said armsV and pins, means for normally maintaining said pins in engagement with said arms, and mechanism actuated by said piston for moving said cam faces of the opposite arm and pin to disengage the same.

22. In a dumping car, the combination with a tilting body' and a truck centrally supporting the same, of means for supporting. said body on one side, a fluid pressure cylinder oppositely positioned relative to said supporting means and provided with a piston, a crosshead actuated thereby, a yielding'connection between said cross head and piston, mechanism` connecting said piston and said opposite supporting means and adapted to releasey the'same on the move.- ment of said piston, and connections between said cross head and tilting body to tilt the same on the further movement of said piston.

23. In a dumping car, the combination with a. tilting body and a truck centrally supporting the same, of fluid pressure cylinders'oppositely disposed relative to the point of support and having pistons, cross heads `actuated thereby respectively and having yielding connections therewith, dumping.

mechanism connecting each of said cross ieads with the tilting body, and releasing mechanism actuated by each lof said pistons to release the dumping mechanism of the opposite cross head and permit dumping toward the opposite side.

24:. In dumping cars the combination with a'tilting body of oppositely disposed fluid pressure cylinders, pistons therein and cross heads movable by said pistons, dumping arms connected to said body and engaging means connecting the arms to said cross heads, a yielding connectionlbetween each of said cross heads and pistons, a rod rigidly carried by one of said pistons, a bell crank lever engaged by each of said rods and means actuated thereby for disengaging the connection between the opposite cross head and dumping arm, substantially as described.

25. In dumping cars, the combination with a truck, and a car body tiltably supported thereon, of releasable means normally suppass, and means for automatically returning i porting said body on one side of its point said valve to open said nnection.

' tiltable support, and means connectingsaid the same when the piston is actuated to perotal connection with said piston and con- `a reciprocally movable .piston andl a dumpsubstantially as described.

controlling said valve, a cut-oli valve in i actuate the dumping device, of a connection i .said connection, a valve rod connected thereopen the cylinder exhaust through the byof tlltable support, a fluid pressure cylinder 30.'In a dumping car the -combination 55- having a piston connected to said tilting with 'a cylinder provided With a piston body on the opposite side of the point of adapted to actuate the dumping device, of a connection from the source of-air to the cylinder, means or controlling said connection to admit air 'therethrough and actuate 60 said piston, a by-pass valveiin said connec tion, a valve rod connected thereto and provided with an off-set in the path of said piston, and a spring adapted to -return said valve rod to normal position. i

.31. InA dumping cars, the combination lwith a tilting body and displaceable s ide members, of anarm carrying each of said side members and pivoted tothe bo y, a link pivotally connected to said arm, an a` guide fixed to the truck and controlling the motion of said link.

32. In dumping cars, the combinationwith va tilting' -body and dis'placeable side members, of an arm carrying each of said ,members and pivoted to the body, a link pivoted to said arm and provided with a pin, and an lupwardly Xtending bracket lixed to the truck and h ving a slot Within whichf'said pin is movable, substantially as 80 described.

In dumping cars, the4 combination with a tilting body having'displaceable side members, of arms pivoted to the bodyand i carrying said side members, links 'pivoted to 85 saidvarms and provided with pins at their. lower ends, and arms carried by the truck y provided with longitudinal slotsl engaging f with said pins. l

34. Ink dumping cars, the combination with a tilting body having displaceable side members, of arms pivoted to the body and carrying said side members, links pivoted to said arms and provided with pins, 'and arms fixed to the truck, each extending upwardly at an incline toward the tilting axisl ofv the body and provided With a longitudinal slot engaging with one of said pins.

In testimony whereof, I the'said ANDREW CHRISTIANSON have hereunto set my hand.

ANDREW CHRISTIAN SON Witnesses: I

ROBERT C. TorrnN,

4 JOHN F. WILL.

piston and said supporting means to release mit the tilting of the body. y

In dumping cars the combination with a tilting body of releasable, means normallv supporting said body, a fluidpressure cyliIiy der having a pist-on, an arm having a piv- 65 nected to said tilting body, and connections between said piston and said support-ing means, to release the same when the pistonis actuated, substantially as described.I

n dumping cars the combination witB a tilting body and a truck pivotally supporting t-he same, of a fluid pressure cylinder carried on said truck andV provided with ingarm pivoted to said tiltingbody, and .having aplvotal connection With said piston,

28. In dumping cars the combination with a source of air at pressure, a dumping cylinder provided with` a piston, a connection etween said air source and one end only of said cylinder, a valve controlling said connection, a valve controlled train air pipe said connection provided with a by-pass, and means actuated by said piston to cut oli t-he admission and open the exhaust through said by-pass at the desired point in the stroke, andmeans arranged to return said valve to initial position on the return of the piston. l

29. In a dumping car the combination with a-sourcev of air at pressure and a cylindei' provided with a piston' adapted to from the source of air to one end only ofA the cylinder, valve"'1eans for controlling said connection to admit air therethrough and actuate said piston, a by-pass valve in to and actuated by sald plston near the end of its stroke to cut off said connection and

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