US1090001A - Dump-car. - Google Patents

Description

J. M.'WILGOX.

DUMP CAR.-

APPLICATION FILED 00T.23, 1912.

Pateusecl Mar.'10, 191* a SHEETS-BHEBT 1.

A21 zornemt;

JjM. WILGOX.

DUMP GAR.

APPLICATION FILED OCT. 23, 1912.

Patented Mar. 10, 1914.

3 SHEETS-SHEET 2.

J. M. WILGOX.

DUMP OAR.

- APPLIOATION IIL BD 00"1'.2 3, 1912 k 1,090.001. Patented Mar. 10, 1914 3 SHEETS-SHEET 3. PI 6. 4.

MUM/5556's Pi llillll llilf tllil lCliL JOHN M. WILCOX, or CLEVELAND, 01110.

DUMP-CAR.

Specification of Letters Patent.

' atented Mar. :10. 1 91 Application filed October 23, 1912.. Serial No 727.427.

To all wriioni it may con/(rm lie it; known that 1, JOHN M. \Vnict'ix, a citizen of the United States of Arncri 'a, residing at Cleveland, in the county of Cuya hog-a and State of Ohio, have invented ccrtain new and useful Improvements in l)umpCars; and I hereby declare the following to be a full, clear, and exact descrip tion of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

This invention relates to new and useful improvements in dump cars, and particularly to cars in which the dumping, and righting actions are ctlected by the agency o't n-cssurc 'tluid.

The objects of the invention are the pro vision ot'" a device of this character which will be of more simple and rugged construction, more ctlicicnt in operation, more easily and accurately controlled, more economical in the use of compressed fluid, and less prone to unauthorised operation at the hands of vandals or in'ipropcr operation at the hands of careless or incompetent worlc men than other devices of this character heretofore employed; the, provision of an arrangement of dimming apparatus whereby the dumping operation may be accurately and exactly controlled, may be arrested or reversed at any point. and may be ctl'cctcd without the jar and racking oi, the supportin structure at present observable in most cars; the provision of a nmchanism of this character which may be placed entirely under the control of the engineer or of some other authorized person stationed at a single central point, thereby preventing the operation of thesame by careless persons or vandais; the provision of a device of this char acter wherein the operative mechanism may be located at such distance above the track as to be shielded from all danger of injury through derailment or contact with ohstruc tions and without at the same time necessitating the raising, of the car body; the provision of new and improved means :for locking the car body in horizontal position; the provision of new and improved means for unlocking the car body previous to the dumping action; the provision of means whereby the functions of unlocking and dumping shall be performed by the movemeat of a single part; the provision of means whereby upon the accidental failure l of th inching me hanism, the dumpii'ig of the car can be absolutely prevented by the pressure lluid means, thus tlVOltllllgI danger to other trains on the road; the provision of a dumping mechanism "a hcrchy a single cylindcr is cmplrn'cd both for th dumping and the righting oi the car body, thus simplifying: the construction and lessening the strain upon the car; the provision of a dumping construction wherein the Forces tending to incline and right the car are opposed and applied entirely through the mechanisi'n of the dumping apparatus, and not through the structure of the car itself, thereby pre venting undue strains upon the car body and the supported strm'rture; \vhile i'urthcr objects and adtantages will become apparent as the description proceeds.

(icncrally speaking, my invention may he dctined as (:OllSlStiIlg of the features or construction and combination recited in the claims hereto annexed and illustrated in the drawings accon'ipanying and forming a part; hereof, wherein:

.l i we 1 an end elevation of a dump car ci'ihodying my invention; l 2 is aside view of the central portion o the car; and Fig. 3 is a cross sectional view taken upon the line 3 of Fig. 1; Fig. 4 is a transverse croswscctional view taken on the line 4 and looking in the direc- 1 ol Fig. I) tion oi the arrows. the car body being shown in inclined position; Fig. 5 is a 'longitudiilal cross sectional view taken through the centor of the cylinder and of the operating parts of the car; and Figs. (rand Tare detail views of the clutches employed; Fig. 8 is a detail view of a form of valve which may be employed; and Figs. S) and 10 are dctailvsectional views of the cylinders 33 and respectively.

The car platform as shown comprises dinally arranged sills 12-12 spaced apart upon opposite sides of the car axis and secured to the end members in the usual manner. Tiltahly supported above the platform so produced is the car body 13 having trunon thecar platform so that the said car body can be inclined to either side in the usual manner. The car body is provided with movable sides or doors, shown at 16, which are mounted on the car body by means of arms 17, the said armsbeing rignions 1.4 journaled in standards 15 mounted cud members lt-1l and a pair of longituof the bifurcated lever 30.

idly secured to said doors and pivot-ally secured t0 the ends of the car body. Between held against endwise movement by being;

extended through the standards '24 clearly shown in Figs. 1 and The inner end of each sleeve is formed with clutch teeth 27 Or similar engaging means, the ad jacent ends of these sleeves being spaced apart by a considerable distance as shown in Figs. 1 and 3. Slidably mounted upon the shaft 23 between these sleeves are two slidable clutch- spools 28 and 28, each of which has its outer end formed with teeth or. other suitable engaging means adapted to engage with the end of that sleeve toward which it may be shifted. Relative to tatiou between the spools and shaft is prevented by means of splines or feathers 29. Also the teeth carried by the spools are narrower than the spaces between the teeth 27 of the sleeves (or it other engaging devices are employed the same are suitably formed so as to permit small amount of play or lost motion), thus allowing the spools to be moved through a small angle before the arms are actuated. Theinner ends of the spools are spaced apart a considerable distance as shown in Figs. 1 and each spool being swiveled to one of the arms 31 The opposite end of this lever is suitably connected to the piston rod 0i small cylinder 33 so as to permit the clutch-spools to be shifted along the shaft 23 by the actuation of this piston. Preferably the devices are arranged so that the piston 34: will normally rest at the center of this cylinder, the means here illustrated consisting of balanced springs" arranged betweenv each end of the cylinder and said piston. Other expcdients may obviously be employed to effect this' ter of: the shatt 23 is rigidly secured a crank arm 43, the listanco between, the arms 3131 of the lever bemgsuliicicnt to permit the same to straddle this crank arm and to allow such movement of the spools merely inasmuch as neither horizohtality nor rigidity of mounting is essential to my invention, it being merely essential that such connection be had between the piston and the moving part to which it is attached as will effect the movement of the one by the other.

In order to preventthe tipping of the car body and premature dumping of its contents. the following arrangement is provided: Pivotally secured to each of the arms 17 is a depending leg 71 formed upon one' side with a downwardly facing shoulder 72 and at the opposite side with an upwardly facing shoulder 73. These legs being pivoted at the end of the car, hang down closely adjacent to the-end members 11, which end members carry stops adapted to cooperate with the shoulders 72, 73 to limit the movement of those legs. The stop for cotiperation with the downwardly facing shoulder 72 illustrated at 7 l and is spaced an appreciable distance below this shoulder during the time that the car body is maintained in horizontal position. The stop which cooperates with the upwardly facing shoulder 73 is shown at 75 (Fig. 3), and is attached to the end of a pivotcdstrap 76 so as to be displaceable into and out of the path of movement of the leg. This stop engages closely the shoulder of its corresponding leg when the car body is horizontal, thereby preventing; the tipping oi the same. A spring 77 secured to the strap 76 normally holds the stop 75 in engaging position. This arrangement is preferably duplicated ateach end and each side of the car.

Journaled to the car platform substantially longitudinally of the car are a pair of rock shafts 78- 78, one outside of each of the sills 12--12, and to each end of each of those shafts is attached an arm 79 having articulated to its free end a link 80 the opposite end of which is pivoted to the end of the strap 76. Secured to each of the shafts 78--78 at a point adjacent to the rock shaft 23 is a normally horizontal arm 81 to the- 'spective spools are in engagement with the to the handle :37 of the valve corresponding sleeves to overlap the end of the lever 82 to which they are nearest.

The actuation of the various parts hereinbefore described is ell'ectcd and controlled by pressure liuid obtained from any suitable source. Under normal conditions the fluid will be compressed-air and the same will be obtained from the locoi'notive, and through-- out the remainder of the specification I shall describe the operation of the device by such compressed air, although it will. be understood that I do not thereby-confine myself to the use of such fluid.

Preferably each car is provided with a storage tank 18 wherein may be contained the fluid necessary to the operation of the car body. While it of course, possible from a theoretical point of view that the car might be operated by air pumped d i- I'ectly to the various cylinders from the locomotive, such an arrangement would en tircly prevent the operation ot-the cars if the locomotive should be detached, as is sometimes done before the cars are dumped,

and would also greatly delay the dumpingof a long traiminasmuch as the locomotive unless specially equipped, could not deliver air rapidly enough to operate more than a limited number of cars at one time, whereas the provision of a tank with each car permits all of the cars to be operated siinultauemisly and these tanks replenished at leisure; also the provision of a tank with each car permits the operation of the dumping mechanism with the least possible amount of (:lisarrangement of the air brake system. From this tank a pipe -il9 convrws the air to the working cylinder. said pipe having eov'imi-ction with the diunpine end of the cylii'ulcr by means of the branch :71) and threeovay valve 52 and with the righting end (If said cylinder by n'ioans ol the branch 51 and tln'ee vay valve 53. Mounted adjacent to the valve 52 is a. cylinder at having a piston 55 therein provided with the usual piston rod 56 which latter is connected 52. A spring (30 coiiperating' with this piston serves to hold the same near one end of the cylinder and to hold the valve in such position as shall interrupt communicalion between the branch 50 and the cylinder. while lumping: open the con'n'nunical'ion between the interior ol the cylinder and the outside air. Likewise supported adjacent to the valve 5:; is a similar cylinder (i3 having ther in a piston (iet provided with t e usual piston rod as which latter is attached to the handle (,6 ol the valve 52 A spring (if) likewise holds this piston toward one end ol' the cylinder thereby uutintainino the valve in a position to prevent communication between the rcseu voii' L8 and the cylinder 20 and to establish comn'iunication between the interior of the cylinder-and the outside air.

For governing the operation of the mechanism I have illustrated four train pipes 86, 87, 88, and 89 respectively. The train pipe 86 is connected by means ofthe branch 90 with one end of the cylinder 33, while the train pipe 87 is connected by means of the branch 91 with the opposite end of that cylinder. The train means of the branch 92 with the cylinder 54, while the train pipe 89 is connected by means 01 the branch 92-3 with the cylinder 63. I-

have not shown any particular means for conveying air to the tank 18 inasmuch as such means is well known in the prior art. Said tanks can be supplied with air either from one or more of the train lines herein illustrated, or by means of a separate train. line, or from the brake system, or in any other convenient manner as will be well undm'stood by those skilled in the art.

The operation of the device is as follows: sun:ing' the car body to be in horizontal position as illustrated. in Fig, l, the piston l to be retracted and the clutch spools 2S and 2H to be in neutral position as shown in Fig. 3, and the air reservoir -18 to be full of compressed air; the engineer knowing in which direction the cars are to be dumped tttl)ll ll($ such variation of pressure in the pipes Staud 87 as to shift the piston 3i and thereby the clutch spools -l and BS" in such u ise as to engage the clutch members upon the opposite side oi the car from the side upon which. the load is to be dumped. i\ccordinulv. it we assume that it is desired to dump the load upon the lcl'l-hand side of the car shown in Figs. l and 3, the clutch will be hifted so as to bring the spool 28" into cng'aguanent with the sleeve adjacent th reto and simultaucously to bring the arm F93 above the end ol' the adjacent lever it is obvious that at this time the other clutch spool 28 and the MM arm 85 will be able to swing l'rcely without comin into contact with any obstruction whatever. If now the engineer shall admit pressure to the train line 88 the piston 55. will be actuated to shift the valve and admit pressure lluid from the reservoir 18 to the cylin' dcr 20 displacing the piston 21. The lost motion between the clutch spool 28" and the [oath of the adjacent sleeve permits the arm R5 to be swung through a small angle prior to any movement of the arm 26. This move lncnl ol the arm 83* displaces the lever 82 and rocks the shaft 78 thereby witlulrawing the stops 75 from the shoulders 73 of the legs Tl of that side of the car which is to be elevated. As soon as these stops have been properly withdrawn the engagement hctwccn the teeth of the clutch spool and the sleeve will raise the arm 26 thereby elevating the right hand side of the car body and depressing the left-hand side as shown by the dotted lines in Fig. 1. The deprespipe 88 is connected by,

. throwingof the guarded against. During this return movc-.

advancing side of the piston.

' communication sion of the left. hand side of the car carries the legs 71 at that side downwardly until the shoulders 7'2 thereof come in contact with the stops Tet after which the further movement of the legs is prevented. This then prevents the further movement of the arms 17 and sides 16 without obstructing the movement of the car body, which still continues to move downwardly opening a gap between the sides and bottom for the discharge of the load. Thus far ithas been assumed that no pressure has been introduced into the train pipe 89, the valve being left, inposition to permit the free escape to the atmosphere of the air at the It now it is desired to right the car, the pres ure in the train line 88 is reduced, permitting the spring (10 to retract the piston and close between the. tank l8 and cylinder 20, opening nnmunication between that cylinder and the atmosphere. Xow it pressure he admitted to the pipe 89, the tank l8 will be placed in communication with the opposite side of the piston 21 whereby the shaft 25 will be rocked in the opposite direction. The lost-'motion con nection beta cen the clutch spool 28 and the adjacent sleeve now causes the arm 26 to lag in the opposite direction thus permittin; the lever tion in advance of the return of the car body to the horizontal. In fact this lost n'iotion may render it impossible for the car body to be brought clear back to its position by means of the piston 21, althouglnthe momentum of the body will be sufficient to carry it the last few degrees of its return movement, whereupon the stops 75 will be drawn by the spring 77 into engagement with the shoulders 73 ot the legs 71, and the car body securely locked in position. It will be noted that the opposite side of the car body has been unlocked ing the dumping operation, wherefore overcar body is absolutely inent, the air by which the dumping operation was effected has been-discharged from the cylinder 20 to the outer air'through the discharge port of the valve 52.

In the above description of the operation it was assumed that the valve was set in discharging position during all of the time that the dumping was being effected; In practice this not the condition, and therein lies one of the important features of my invention. It is obvious from an inspection of Fi a 1 that the inclination of the car body involves a lowering of the center of gravity of the same and its contents which causcs the same to fall to the limit of its movement with a very forcible shock unless some means be adopted for restraining the same. Accordingly it is preferrcdto preface the ca r body and Y convenient in ballastino; a road bed.

the car body has been righted and has been 82 to resume its initial POSlat no time duiw theliumping operation by opening the valve so as to admit pressure air to the forward side of the piston 21, thereafter admitting air to the opposite side thereof by means of the valve By properly controlling the pressure within the train pipe 89, the operator can then regulate the rate of leakage of airthrough the alve 53, thereby absolutely controlling the rate of inclination of preventing any of the hammering and aching of the car body and its supporting structure which has hitherto been so objectionable. In fact, the control is so exact as to permit the partially dumped ears to be restored to horizontal position at wilLit' need should arise, or to regulate the ate of discharge of contents to the speed mostsuitable to the handling of thesame as After lockcdby the stops 73, the pressure in the train lines 8687 may again be equalized, permitting the return of the piston 3 k to its initial central position and thereby disengaging the clutch spool '28 or 28". The op eration of dumping the cars cannot now be performed by vandals inasmuch as the operation of the piston 21 would serve merely to rotate the shaft. 23 without unlocking the car or exerting any strain whatever upon the mechanism. Preferably the mechanism is arranged so as to permit the dumping, of the train only from" some central point which may be either the cngincefis cab or some position along the train. However, for the purpose of permitting; the operation of the cars as independent units, 1 have 'llustrated cross connections between the various train lines, the same being provided with valves so that air can be transferred from one to the other or to and from the tan: l8 thus permitting the operation of each car separately.

While I haveneccssarily described my invention in detail, it is obvious that a great many changes in point of construction, arrangement, and operation can be ellected without: departing from the general operativc idea or lOSll'lf to any material degree the advantages 0. my invention. I All of such changes I therefore claim as within the scope of my protection, except as the same may be anticipated in the prior art.

Having thus described my invention what I claim is 1. In a dump car, the combination, with a supporting structure and a car body pivoted to said structure upon a horizontal axis so as to be tiltable upon either side of said axis, of a fixed cylinder carried by said sup-' porting structure, means for admitting fluid under pressure to said cylinder, a piston in said cylinder, and means whereby a single movement of said piston in one direction may be utiliaed to cause the inclination of said car body in either direction, and'the return movement of said said car body.

2. In a dump car, the combination, with a supporting structure and an elongated car body pivoted thereto upon a sulastantially horizontal axis and adapted to be inclined in either direction about said axis, the bottom of said car body being spaced above said supporting structure, of a cylini ler ca rried by said supporting structure beneath piston will right piston in the same direction, the other of 5 said tilting devices being meanwhile disconr l l 4 said our body, a piston in said cylindcr,l means for admitting pressure fluid to one end of said cylinder t displace the piston therein, means TEOL crmnecting said piston to said. car body intermediate the ends thereof so as to incline the same in either direction 'by such displacement of said piston, and means for admitting pressure fluid to the opposite end of said cylinder for restoring said car body to its initial position.

In a dump car, the combination, with a supporting structure and a car body pivoted thereto upon a fixed horizontal axis so as to be inclined thereabout in either direction, of means comprising a stationary cylinder and a movable piston therein for inclining said car body about its axis, pressure fluid connections to the opposite ends of said cylinder whereby said piston may be operated in dill'erent directions, and means secured to said car body i iterlnediatc its ends and adapted to be attached in operative relation to said piston whereby a movement of said piston in one given direction may be employed to ell'ectthe dumping of the car body to either side.

. 4-. In a dump car, the combination, with a supporting structure, and a flat, elongated car body pivoted to said structure upon a horizontal axis so as to be tiltable upon either side of said axis, of a cylinder carried by said supporting structure beneath said our body, means for admitting fluid under pressure to said cylinder, a piston in said cylinder, means whereby the movement of said piston in one direction may be utilized to cause the inclination of said car body in either direction, and means for retarding the escape ol? fluid from the other end of: the cylinder whereby the inclination of the car body may be cushioned in either d ire '2 ti on 5. In a dump car, the combination, with a supporting structure and a car body pivoted to said nll'llClllIO upon a horizontal axis so as to be Liltable upon either side of said axis, of a single cylinder carried by said supportingstructurc, a piston in said cylinder, movable devices opcratively connected lo said piston so as to be movable therewill tilting devices carried by the car bodvi and means for connecting said movable devices to either of said tilting devices so as to ellcct the in lination of saidcar body in either direction upon the movement of said nectcd from said movable devices.

6. In a dump car, the combination, with a supporting structure and a car body pivoted to said structure upon a horizontal axis so as to be tiltable upon either side of said axis, oi. a single cylinder carried by said sll] 301'tl11g structure, a piston in said cylinder, movable devices opcratively connected to said piston so as to be movable therewith, tilting devices carried by the car body, and means for connecting said movable devices to said lilting devices so as to effect the inclinatirm of said our body in either di reclicn upon the movement of said piston in the same direction, said tilting devices being normally disconnected from said piston.

T. In a dump car, the combination, with a supporting structure and a car body pivoted thereto upon a substantially horizontal axis and adapted to be inclined in either dircction about said axis, of a cylinder carried by said supporting structure, a piston in said cylinder, means for admitting pressure fluid tmeither end of said cylinder to displace the piston therein to the other end, means for connecting said piston to said our body so that the forward movement may incline or tilt the same and its return movement may right or restore the same, locking devices whereby the car body is normally held horizontal, and means operative during the first part of the dumping movement of the piston for disconnecting said locking devices, said locking devices being arranged for re'e ngagement by not later than the conclusion of said righting, movement.

8. In a dump car, the combimltion, with a. supporting structure and a car body pivoted thereto upon a substantially horizontal axis and adapted to be inclined in either direction about said axis, of a cylinder carried by said supporting strlwture, a piston in said cylinder, means for admitting pressure fluid to either end of said cylinder to displace the piston therein toward the opposite end, rigid members secured at opposite sides of said our body, said piston in operative relation to either one of said rigid members, whereby said car body can be inclined in either direction by the operation of said piston in the same direction. I

9. In a dump car, the combination, with a supporting structure and a car body pivoted thereto upon a substantially horizontal axis and adapted to be inclined. in either direction about said axis, of a bylinder carried by said supporting structure, a piston in aid cylinder, means for admitting pres sure fluid behind said piston to displace the same, tilting members secured at opposite sides of said our body and normally disengaged from said piston and means for conand means for connecting .oted thereto upon a substantially necting said piston in operative relation to either one of said tilting members at will,

bers being inextensible and incompressible whereby said body can be restored to horizontal position by the actuation of said piston in the opposite direction.

10. In a dump car, the combination, With a supporting structure and a car body pivoted thereto upon a substantially horizontal axis and adapted to be inclined in either direction from the horizontal about said axis, of a cylinder carried bysaid supporting structure, a piston reciprocable Within. said cylinder, means for admitting pressure fluid to either end of said cylinder whereby said piston may be moved from either end of the cylinder to the other end, mechanism for connecting said )iston to said car body so as to oscillate the same in either direction from the horizontal, said mechanism being normally disconnected whereby the unauthorized operation of the dumping means is prevented, and means under the cony'rol of the engineer for determining the posi ion of said mechanism.

11. In a dump car, the combination, withv a supporting structure and a car body pivhorizontal axis and adapted to be inclined in either di rection from the horizontal about said axis, of a cylinder carried by said supporting structure, a piston reciprocable within said cylinder, means for admitting pressure ,tluid to either end of said cylinder whereby said piston may be moved from either end of the cylinder to the other end, a movable member operatively connected to said piston and movable to and fro therewith, tilting members secured to said car body at opposite sides ofits axis, and means for connecting either of said tilting members to said mor able member whereby said our body may be inclined in either direction by the movement of said piston from one end of said cylinder to the other, the other of said tilting members being meanwhile free i to follow the movement of the car body.

12. In a dump car, the combination, with a supporting structure and a car body piv oted thereto upon a substantially horizon tal axis and adapted to be inclined in either direction from the horizontal about said axis, of a cylinder carried by said supportin structure, a piston reciprocable within said cylinder, means for admitting pressure fluid to either end of said cylinder whereby said piston may be reciprocated, a movable member operatively connected to said piston and movable to and fro therewith, tilting members secured to said car body at opposite sides of its axis, and fluid-pressure-operated devices whereby either of said tilting members may be connected with said movable member whereby said car body may be inclined in either direction by the operation of the piston in the same direction. I

13. In a dump car, the combination, with a supporting structure and a car body pivoted thereto upon a substantially horizontal axis and adapted to be inclined in either direction from the horizontal about said axis, of locking means connected to said car body and to said supporting structure whereby the casual inclination of the car body is prevented, a cylinder carr' d by said supporting structure, a piston in 1e within said cylinder, means including a lost-motion connection for connecting said piston to said car body whereby the continued for- Ward movement of said piston may incline the same, tripping mechanism for-said looking means, and devices movable coincidentally with said piston and adapted to .operate said trip ing mechanism and release said locking mec ianism prior to tlhe/ inclination of said car body through the medium of said lost-motion connection.

14-. In a dump car, the combination, with axis and adapted to be inclined in either di rection from the horizontal about said axis of locking means connected to said car bodv and to said supporting structure whereby the casual inclination of the car body is prevented, a cylinder carried by' said sup-- porting structure, a piston movable within said cylinder, a rigid link articulatedtosaid car body at each side of its axis, means for connecting either of said linksto said piston, means for admitting-fluid pressure to said cylinder at either side of said piston, tripping mechanism for said locking means,

'and means whereby the early part of the movement of said piston may operate saidtripping mechanism and release said locking mechanism prior to any materialflincli nation of said car body.

15. In a dump car, the combination, with a supporting structure and a car body pivoted thereto upon a substantially horizontal a supporting structure and a car bodypivoted thereto upon a substantially horizontal axis and adapted to be inclined in either I direction about said axis, of a cylinder carried by said supporting structure, a piston in said cylinder, a substantiallyhorizontal rock shaft journaled in said supporting structure, an arm-carried by said rock shaft, connections between said arm and said-piston, fluid pressure connectionato said cylinder whereby said piston may be displaced and said shaft rocked, oscillable members supported adjacent to said sln t, ried bysaid oscilh ble membersl tilting; mom bcrs secured to said car body and to said arms, and means for connecting said shaft to either of said oscillable members so as to eiiect the inclination of said (likdff llfifilx in arms eareither direction upon the movement of said rock shaft in the same direction.

16. In a dump car, the combination, with a supporting structure and a car body pivot ed thereto upon a substantially horizontal axis and adapted to be inclined in either direction about said axis, of a cylinder carried by said supporting structure, a piston in said cylinder, means for admitting pressure fluid to either end of said cylinder to reciprocate the piston therein, an arm pivoted for movement about an axis substantially transverse to said cylinder, connections between said arm and said piston, oscillable members substantially in alinement with the axis of said arm, tilting members secured to said car body, and to said oscillable members, means including a lost-motion connection for connecting'said arm to either of said oscillable members, devices secured to said car body and to said supporting structure whereby said car body is held against casual inclination, tripping mechanism whereby said locking devices may be rendered inoperative, and means movable with said arm aud.adapted to actuate said tripping mechanism prior to the operation of said tilting devices by the agency of said lost-motion connection.

17. In a dump car, the con'ibination, with a supportingstructure and a car body pivoted thereto upon a substantially horizontal axis and adapted to be inclined incither direction about said axis, of a cylinder car ried by said supporting structure, a piston in said cylinder, a movable member operatively connected to said piston and movable to and fro therewith, fluid pressure connections to said cylinder whereby said piston and member may be displaced, tilting members secured to said car body, clutch devices for connecting said movable member to one of said tilting members so as to clfcct the inclination of said car body in either direction upon the movement of said. rock shaft in the same direction, and means [or normally maintaining said clutch devices in disen gaged position.

18. In a dump car, the combination, with a supporting structure and a car body pivoted thereto upon a substantially horizontal axis and adapted to be inclined in either direction about said axis, of a cylinder carricd by said supporting structure, 'a piston in said cylinder, a movable member operatively connected to said piston and movable to and fro therewith, fluid pressure c0nneclions to said cylinder whereby said piston and member may be displaced, tilting mem-r bcrs secured to said our body, clutch means whereby said. til'ting mcmbers can be con? ,nectcd to said movable member, and fluitgoperatcd mechanism. for the operatlon at said clutch means. y"

19. In a dump car, the combination, wfth a supporting structure and a car body pivoted thereto upon a substantially horizontal axis and adapted to be inclined in either direction about said axis, of a cylinder carried by said supporting structure, a piston in said cylinder, a movable member operatively connected to said piston and movable to and fro thereudth, fluid pressure connections to said cylinder whereby said piston and member may be displaced, lilting members secured to said our body, an auxiliary .cylinder carried by said supporting structure, a piston therein, means operated by said lastmentioned piston for connecting, said movable member to said tilting members. and fluid pressure connections to said auxiliary cylinder whereby the operation of said means can be controlled.

20. In a dump car, the combination, with a smpporting structure and a car'body pivoted thereto upon a substantially horizontal axis and adapted to be inclined in either direction about said axis, of a cylinder carricd by said supporting structure, a piston in said cylinder, a movable member operatively connected to said piston and movable to and fro therewith, fluid pressure connections to said cylinder whereby said piston and member may be displaced, tilting members secured to said car body, an auxiliary cylinder carried by said. supportin structure, a piston therein, clutch means connected to said auxiliary piston for connecting said movable member to eitheroi said tilting members, said clutch means being disengaged from both members when said auxiliary piston .is in the middle of its cylinder and arranged to determine the opera lion oi either of said tilting members depending upon the direction of its displacement, balanced springs normally maintaining said auxiliary piston at the middle of its cylinder, and fluid pressure connections whereby said piston can be displaced in either direction.

21. In a dump car, the combination, with a supporting structure and a car body pivoted thereto upon a substantially horizoptal and adapted to be inclined in either direction about said axis, oi? u cylimlcr rarricd by said supporting structure. a piston,

in said cylinder, a substantially horizontal rock shaft journaled in said supporting structure, an arm carried by said rock shaft, comtections between said arm and said piston, fluid pressure connections to said cyl- Jhuler whereby said piston may be displaced and said sha'l't rocked, tilting members sccured to saul car body, and means for connerting said tilting members to said shaft,

so that said our body will be inclined upon the roclunn ol the said shaft.

In a dump car, the combination, with a supporting structure and a car body rplv t d th r to upon a substantiallvborizontal axis, and adapted to be inclined in either direction about said axis, oi a cylinder carried by said ,siuvpoii-ting structure, a piston in said cylinder, means for admitting pressure fluid to either end of said cylinder to reciprocate said piston, a movable member carried by said supporting structure, connections between said movable member and said piston, whereby the same may be forced to move coincidentally therewith, a tilting member secured. to said car body at each side of its pivot axis, means including a lost-motion connection for connecting said movable member to either one of said tilting members, a locking device so ured to said our body at each side of its pivot axis, connections between one of said locking devices and. the supporting structure arranged to prevent the movement of said our body in one direction, connections between the other of said. locking devices and the sup porting structure arranged to prevent the movement of said car body in the opposite direction, a tripping device for each of said locking devices, and means movable coincidentally with said piston and adapted to actuate said tripping mechanism and disengage said locking devices, whereby the appropriate locking means is disengaged prior to the inclination of the car body through the agency of said lost-motion connection.

23. In a dumpcar, the'coml'iination, With a supporting structure and a car body pivoted thereto upon a substantially horizontal axis and adapted to be inclined in either directionabout said axis, of a cylinder carried by said supporting structure, a piston in said cylinder, means for admitting pressure fluid to either end of said cylinder to reciprocate said piston, a movable member carried" by said supporting structure, connections between said movable member, and

said piston, whereby the same may be forced.

devices, and means movable coincidcntally. with said piston and in ad ance of any niatc'lial moven'ient of said car body 2111 adapted to actuate said tripping incchani i and disengage those locking devices which are associated with the 'iarticulai' tilting mechanism under actuation, the remaining lOCklILQf devices being unaiircted.

I 24;. In a dump car, the combination, with a supporting structure and a car body pivoted thereto upon a substantially horizontal axis andadapted to be inclined in either di rection about said axis, of a cylinder carried by said supporting structure, a piston in said cylinder, means for admitting pressure fluid toeither end of cylinder to reciprocatesaid piston, a movable member carried by said supporting structure, connections between said movable member and said piston, whereby the same may be forced to move to and fro therewith, a tilting member secured to said car body at each side of its pivot axis, depending means carried by said car body, stop devices car ried by said supporting structure and cooperating With said depending means, there being a stop device for each of said tilting members, whereby said car body is normally held against inclination in-the direction in Which said tilting member would tend to incline the same, tripping mechanism for-each of said step devices, engaging devices operated by the movement of saidpiston, and means for connecting said movable member to either one of said tilting members and simultaneously arranging saidengaging devices in a manner to permit it to operate the associated tripping mechanism.

25. In a dump car, the combination, 'With a supporting structure and a car body pivoted thereto upon a substantially horizontal axis and adapted to be inclined in either direction about said axis, of a cylinder carried by said supporting structure beneath said car body and having its axis substantially parallel with the length of the car, a piston in said cylinder, rigid tilting members securedto said cdi body, means for connecting said tilting members to said piston so that the angle between said our botly and said supporting structure may bear a:

dbtinite relation to the displacement oi the said piston from the end otsaid cylinders, a source of fluid pressure supply, connections between said source and each end of said cylinder, and a three-way valve in each of said connections arranged to connect said cylinder either with saidsource of fluid pressure or with the ol'itside air.

26. in a dump car, the qpmbination, With a supporting structure ,r'nd a car body pivoted thereto upon a silibstantially horizontal axis and adapted Etc be inclined vin either direction about sai axis, of a cylinder carried bysaid suppg rting structure, a piston in said cylinder, a s urce of pressure iluid, means including a thrcc-Vay valve for admitting ')ressurc fluid from said source to either end of said cylinder to reciprocate the piston therein, tilting members secured to said car body, means "ir connecting said piston to said tilting members,springsnormally maintaining said valfve's nia position to establish con'nnunicatioir betvi'een the interior of the cylinder and the open air and to prevent communication between said cylinder and source, a cylin er adjacent to eachof said valves and having a piston therein, connections between each of said pistons and one of said valves, and pressure fluid connections to each of said cylinders whereby the engineer or other central otlicer can govern the operation of the dumping mechanism.

27. In a dump car, the combination, with a supporting structure and a car body pivoted thereon upon a horizontal axis, of a cylinder carried by said supporting structure, means for admitting air to each end of said cylinder, a piston in said cylinder, a shaft operatively connected to said piston so that the movement of the same will rock said shaft, arms loosely mounted on said shaft, clutch members carried by said arms, clutch members on said shaft and adapted to be brought into engagement with the clutch members on said arms alternately, and means operatively connecting said arms with the car body so that the rocking of said shaft will produce a tilting of the car body in the appropriate direction when either of said arms is locked to said shaft.

28. In a dump car, the combination, with a supporting structure and a car body pivoted thereto, of a cylinder supported below said car body, means for admitting air to' each end of said cylinder, a piston in said cylinder, a piston rod connected to said piston, a shaft extending transversely of said supporting structure, means connecting said piston rod to said shaft so that the movement of said piston rod will rock 'said shaft, an arm loosely mounted on each end of said shaft, means for connecting either of said arms with said shaft, and link means connecting each arm with the portion of said car body thereabove.

'29. In a dump car, the combination, with a supporting structure and a car body pivoted thereto upon a longitudinal axis, of a shaft supported transversely of said supporting structure, means for rocking sald shaft, an arm pivoted for movement about each end of said shaft, clutch means whereby either of said arms may be secured to said shaft, a clutch shifting lever, an air cylinder operativcly connected to said lever so that the movement of the piston of said cylinder in one direction will shift the clutch lever in one direction and the movement of the piston in the opposite direction will shift the clutch lever in the opposite direction, and train lines communicating with the ends of said cylinder whereby the operation of said clutch may be determined by the differences of pressure in said lines.

In testimony whereof, I sign the fore going specification, in the presence of two witnesses.

JOHN M. \VILCOX,

\Vitnesses:

V. C. LYNCH, N. L. MCDONNELL.

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