US957616A - Dump-car. - Google Patents

Description

A. LIP$CHUTZ.

DUMP UAR.

APPLICATION FILED APR. 1, 1904.

957,61 6, Patented May 10,1910.

3 SHEETS-8HEET 1.

dcizzasses A. LIPSGHUTZ.

DUMP GAR.-

APPLIOATION FILED 'APR. 1, 1904.

3 SHEETS-SHBET 2.

Patented May 10, 1910.

A.'LIPSUHUTZ.

DUMP OAR.

APPLICATION FILED APR. 1

Patented May 10, 1910.

3 SHEETS-SHEET 3.

l v I,

UTED STATES PATENT orr es.

salmon. msonu'rz, or sr. Lours mrssoum, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO narrower. DUMP can COMPANY, A conrona'rron or MAINE.

. DUMP-CAR.

Specification of Letters Patent.

Patented May 10, 1910.

Application filed April 1, 1904. Serial No. 201,047.

' have invented certain new and useful' Improvements "in Dump Cars, of which the following is a specification.

M invention relates to freight cars, and particularly to that class of cars known as dump, or dumping cars, which have doors forming their floors and adapted to be dropped to discharge a load.

It has been the practiceto cars having inclosed ends and with doors only at the middle section of the car. The tendency ofthe present time is toward a car which shall have vertical ends as well as sides and which shall be self cleaning from end to end, that is, adapted to disbuild at. ing

' charge every part of its load when the doors are opened. A car of the new class, if provided with a level floor, may be used in ordinary traifiqor as a dump car, as conditions may necessitate; but whilethedemand for such cars has been recognized and attempts have been made to meet the requirements of railroads in this regard, much difiiculty has been experienced through failure to properly support the great number of doors formin the bottom of such a car and to rovi e means .for quickly 'openingand closing the drop doors. Theweight carried by a hori zontal drop door' is so great that the ordinary winding shafts and chains heretoforeused with inclined doors cannot be relied upon. When these supports were discarded and rollim and sliding )arts were substituted to loclr and support t e doors, the great obstacle of friction was encountered, and it was found that too much power was re- With this object in view, my' inventionconsists of a metallic or wooden car p v, having its floor elther wholly or partial y. composed of doors occupying either horizontal or inclined positions and hinged at either their inner or outer edges incoinbination Twit-h a. plurality of.= we ,tgqediige or rop \vedging devices or members beneath said doors, and means for operating said devices to raise said doors and to lock them, or per nnt them tofall. And further, my invent1on consists in various details of construction and in combinations of parts all as hereinafter described-and particularly pointed out in the claims.-

portion of a I are details of the ever-restraining device, or

temporary pivot, used upon the side of'the car; Fig.4 1s an enlarged end view of the car; Fig. 5 is acorn'ppund section, on the lines at, y of Fig. 1; ig. 6 is a pers ective detail of one 'ofthe,wedge-operating evers;.'

Fig. .7 is a plan view of the car, on a plane beneath the floor thereof, showing the door lifting mechanism; Fig. 8 is a detail, transverse, vertical-section, taken from the rightv hand side of 'Fig, 5; Fig. 9 is a similar view, showing the door operating mechanism as it appears after being started from its looking position. Figs; 10 and 11 similarly show the door mechanism in the intermediate and fully dropped positions, and Fig. 12 is a perspective detail of the mechanism minus the o crating levers.

The chie objection to themethods hitherto proposed'for operating the doors of dump cars, namely, the great force required to move the door-restorin and looking devices, results,'I apprehen from the fact that in all of these plans it has been proposed to begin the lifting of the doors by engaging or attacking them at a point e oseto their hinges or at equivalent lev- 'erage; Furthermore, the friction betweenat a point remoteflfrom its hinge, and which shall lock'the door in its raised position, without being firmly bound in lace, either b the weight of the door, or y en. 'meeiianieal restraining device, the en that the doors maybe raised and locked with ease and as easily unlocked and permittedto fall.

A. further and distinct object of my invention is, to provide a door-operatin and locking mechamsm that may be employed.

with practically any kind of underframe. In 0t er words, a mechanism which may be adapted and applied to a car without altering its underframe, or necessitating the building of a special underfram'e.

The body of the'car shown in the drawin'gs is composed of the sides, 2, 2, the ends, 3, and underframe, 4, having a floor formed by a plurality of drop doors, 5, 5. The under frame is provided with a plurality-of transverse members or beams, 6, including the twobolsters, '7, these parts being arranged between the several doors and serving in part to frame the door openings.

The doors are arranged in two rows and are preferably hmged'substantially at the cen-.

ter line of the car floor, 8, 8, being the hinges thereon. The four drop doors, adjacent to each bolster, are preferably and usually of less width than the other doors in the floor of the car and as a rule do not drop as far as the intermediate doors, that is, to as great an angle. 'It is preferable that the intermediate doors shall be so arranged that they may drop to an angle of substantially 4:5 to 50 degrees to the horizontal, but it is. rare that the doors immediately above the trucks-of the car can be 1 dropped to a greater angle than degrees.

A particular object of my invention that may well be mentioned at this point is, to provide a drop-door mechanism which, save for alteration in dimensions, may be employed upon both the end and intermediate drop doors of a dump car with equally good results. The manner in which this desirable end is accomplished will appear hereinafter.

' The door-lifting, locking and dropping mechanism which I employ, is composed of a-number of parts or sets of parts duplicated at the edge of each drop door, and save for a few particulars pertaining to connecting devices, a' description of the mechanism for represents the iron or 10 represents. the inclined tra her way; 11, the roller orequivalcnt; and 12, 13 and 14:, the folding lever or system of levers referred to. One of these complete contrivances may be arranged at each transverse edge of each door, or one of the same may serve for the adjacent edges of two doors, according to the construction and arrangement of the ways, 10, and the roller; or, as shown in the drawings, the rollers of one door, or of two adjacent doors, may be connected by a shaft, 15, for equalizing their movement and to give the structure increased rigidity. Details of this character, involved in my invention, may be modified by a skilful the principle or idea 0 my invention, and

I therefore shall not confine my invention to any such details of construction or arrangement. Furthermore, sliding parts or members may be substituted for the rolling parts herein shown, it being to a great extent immaterial to my invention whether sliding or rolling parts be arranged between the doors and the inclined tracks, so long as positively: acting means, such as folding or collapsing levers are employed for actuating the mov-' able lifting or wedging members. I refer person possessed of that the inclined way or track, l0, sha take:

the form of a hangenhaving upright arms, 10, that are riveted to the overlying or ad-' jacenttransverse member or element of the underframe. The lower end of the incline merges into the vertical by a curve, l0", and the upper end of the incline terminates in a flat or level portion, 10", adapted to serve as a rest for the actuating or wedging part, 11. The straight or level portion of the incline or track may be of any desired length, and need not be wider than the member, 11. As the space between the bottom of the car and the top of the truck is limited, I,

prefer to arrange the inclines or tracks, 10, of the four end doors of the car, at the level of the bolster, it being seldom advisable to allow the door-sustaining tracks to hang below the level of the bot-tom of the body bolstcr at points directly above the trucks. Tracks or inclines of this construction or arrangement are illustrated at the left-hand side of-Fig. 5 of the drawings. Tracks of the same dimensions are arranged upon the end sill of the car and upon the body crossmembcr, 6, adjacent to the bolster. In these cases the wedging roll, 11, may engage the bottom flanges, 5', of the drodoorsdirectly, or through the medium 0 the strai ht lifting irons, 9. There is more, availa le space beneath the mid ortions of the car, and in the case of the mi dle doors, 5, I p efer to lower the lqcking1 positidns of the r ers. 11, and, provide t e' doors with cam-like lifting-irons, 9, having inclined rear edges, 9, and a straight bottom section, 9", to rest upon the roller, 11, as shown 'at the right end of'Fig 5 and in Figs. 8 to 15! inclusive.

The deep lifting-cam serves to compensate for the lower position of the incline or track ;and the roller thereon, causing the door to be lifted to the full height when the operating roller is drawn forward or outward upon the incline, 10.

It is obvious that the cam, 9, and the track, 10, cannot be in the same vertical plane, and that this fact necessitates the employment of a roller or rollers of sufiicient length to engage both parts; otherwise the construction of this element of my mechanism is in no wise peculiar or difficult. But to sim lify the construction and arrangement of the rollers, I refer to connect adjacent rolls, or pairs 0 rolls, by means of a light shaft or rod, 15. There may be one of these shafts for each door; this is the preferable arrangement over the trucks, or a single shaft may be used for two or more doors, preferably not more thantwo. When the rollers of more than two doors are connected by a single shaft, there .is,,danger that this light connecting rod or shaft w ll be flexed, thereby throwing the connected parts out of line and rendering their operation diflicult, The employment of a number of the light shafts, 15, is not objectionable because all those, on either side of the car," maybe worked 'simultaneously, as will be hereinafter explained.

The lever, 12, is attached to the roll or rolls, 11, in any suitable manner, as by connecting it to the shaft, 15. Its outer end is pivotally connected to the lower end of the link or lever, 13. The joined ends of the lovers or links, 12' and 13, are preferably olft, as indicated in Fi s. .5 and 6, but this features is not essentia to the success of my invention; The upper end of the link or lever, 13, is pivotally connected to the upper or free end of the lever or arm, 14. The arm, 14, is securcdn on the main operating shaft, 16. This shaft is supported in bearor boxes, l'l, formed upon the brackets, 17 that are attached to the side of the'car, or to some portion f the underframe, depending upon the car design.

The restraining "device or temporary pivot, before allud edto, is preferably made a part of the bear-lug, 17, and its bracket. It comprises the extension, 17", provlded with the curved, vertical slot or recess, 18, substantially concentric with the bearlng and open at its lower end. The link or lever, 13, is provided with a lug, 13, extending from its side. This lug is preferably curved, as indicated in Figs. 6, 9, 10 and 11. The link is slightly bent, and whenin its substantially vertical position, is raised to such point that its curved lug, 13, passes into the recess or slot, 18, on the, bearing bracket, ready to serve as a fulcrum for the lever, 13, as will be explained later.

The shaft, 16, may be continuous from end to end of the car, and this is the way in which it is applied to short cars; but when a long car is e ui I ped I prefer to divide the shaft, to avoi t e detrimental "results ocby the enga emen &

casioned by load deflection of the car. The shaft, 16, is operated from the end of the car, and when it is turned, will either drop or lift all of the doors to which it is connected by the folding levers. The operating mechanism of the shaft, 16, may be of any desired or suitable construction, but I prefer a simple jack lever and pawl 19, 20, arranged on the end sill and engaging the -ratchet wheel, 21, on the shaft, 16. The ratchet wheel and sha'ftmay be-operated in either direction by this means.

22 represents a lock' or pawl, whereof, 23, is a button, by which the pawl may beheld out of en agement with the ratchet wheel when the doors are to be dropped. The button, 23, is always disengaged, and the pawl, 22, permitted to engage with the ratchet wheel when the shaft is being turned to close the doors. k

The operation of my door mechanism is as follows :-The normal or-closed position of the door and of the operating mechanism is, shown in Figs. 1, 5, 7 and 8. In this position the wedging part or roller, 11, ,is at the top of the incline, 10, and rests upon the flat or level part thereof, the door, through the medium of cam, 9, resting upon the roller, 11. Alt this time, also, the arm, 14, is in its vertical position, directly against the side of the car, while the lever, 13, is thereby cramped overthe shaft, 16, and has its lug, 13 in the slot, 18, in the bearing,

17. If it is now desired to drop or open the-door the shaft 16, will be turned by means of the jack lever, 19, at the end of l the slot, 18, the lower end of said lever, 13,

will be thrown inwardly, thereby thrusting the link, 12, and the roller inward, unseating the. roller from the flats upon the track,

10, and the door cam. .Assoon as the roller passes on to the inclined part of the track, the weight of the door will cause it to travel down the track, thereby drawin down the levers, as shown in Figs. 10, an movement continues until the roller strikes the upwardly curved part of the track, which will stop both the roller and the door resting thereon; see Fig. 11. Meantime, the load formerly resting upon the door will 11. This have been discharged therefrom. It will be noted that the-links forming a compound or folding lever are rel'e nad from-great strain t of the roller with the lower curve' end of the 'track before the lever as a whole is com letel straightened; This may be accomplis ed p y proportiontin the parts in the manner shown, ;and very ligdit parts will serve all purposes andbe lived because of the slight forces exthereon and the fact that they will be The door is raised and curs, the lifting force of the arm, 14,- will be transmitted through the link, 13, fulcrmning upon the shaft, 16, at a point near the lower end of the lever, 13, so that great force is exerted to accomplish the final lifting movement of the roller and its return to the fiat or level portion of the track. The final movement of the shaft, 16, causes the lever,

"13, to house its curved lug in the slot, 18, of

the bearing bracket and also causes its upper center to snap by the plane of its , lower center,.making it possible to hold the compound lever in the position of Fig. 8 by the exertion of a very slight restraining force at the end of the operating shaft 16. The throw of the drop doors over the trucks of the car is notso great as the throw of the intermediate doors, but the difficulty presented by this fact is easily overcome by simply reducing the lengths of the parts of the compound levers belonging to such doors. For comparison of dimensions, see Fig. 5. The prlncipal reduction is in the length of the arm let. By this simple eX- pedient I am able to secure the operating arms, 14, of all of the door-mechanisms, to a single shaft, 16, and have the different mechanisms operate simultaneously, although to difierent degrees, concerning their relative movements.

It is obvious that numerous modifications of my invention will readily suggest themselves to one skilled in the art and I therefore do not confine my invention to the specific constructions herein shown and described.

-Having thus described my invention, I claim as new and desire to secure by Letters Patent,

1. A car provided with a drop door, in combination with an inclined track or tracks beneath said door, a part or parts movable upon said trac'kxor tracks, and a compound lever connected to said part and to said car, for actuating said movable part, substantially as described.

2. A car provided with a drop door, in combination with a wedge-like device beneathsaid door, a part for it to travel on and a plurality; of levers extending beneath said door for operating said device to raise and lock said door or permit it to fall, substantially as described.

the shaft, 16, in the re-- 13, will; engage with thennder side of the shaft 16. When this oc- 3. car provided with a drop door, in combination with inclined hangers beneath said door, and a wedgepart movable on said hangers to raise and lock said door or permit it to fall, a plurality of compound levers for actuating said wedge part substantially as described.

4. A car provided with a drop door, in combination with an inclined hanger beneath said door, and a Wedge part movable on said hanger to raise and lock said door or permit it to fall, a compound lever for positively operating said part in both directions, and a. rocking shaft for operating said lever, substantially as described.

5. A car provided with a drop door, in combination with an inclined track beneath said door and provided with a fiat or level portion, a part movable on said track and whereon said door rests, means for moving said part, and said track having an upwardly curved lower end, substantially as described.

6. A car provided with a drop door, in combination with an inclined track beneath said door and provided with a ffiat or level portion, a part movable on said track and whereon said door rests, and a system of levers interposed between said part and a fixed point on said car, for actuating said movable part, substantially asdesc'ribed.

7. A car provided with a drop door, a lifting and locking device beneath said door, a rotary part on said car, a compound lever connecting the same with said device, and 'a temporary pivot for said lever, substantially as and for the purposes specified.

8. A car provided with a plurality of drop doors in its bottom, in combination with a plurality of door-lifting and'locking devices, a plurality of compound. levers connecting said devices .with the side. of the car, and a single means upon said car, for simultaneously operating said compound levers to simultaneously raise and lock said doors or permit them to fall, substantially as described. 7

9. A car provided with a, drop door, in

combination with a lifting and locking device beneath said door, a rotary part on said car, a three-part compound lever connecting the same with said device and an intermittently operating pivot for the middle part of :said lever, substantially as described.

10. A car provided with a drop door, in

.combination with means beneath the door for operating it, a rotary part on the side of the car and suitable operating levers, ex tending therefrom 0 said means beneath said door, substantially as described.

11.-A car provided with a plurality of drop doors in its bottom, in' combination with a door lifting mechanism beneath each door, a single door operating member on movable on said tracks, a rocking shaft at the side of the car and'levers connecting said shaft and said door lifting means, substantially as described.

13. A car provided with a drop door in its bottom, in combination with door looking means beneath the door, a rocking shaft, a three-part lever connecting same 15 with said rocking means and a temporary pivot or restraining part for the middle section of said lever, substantially as described.

14. A car provided with a drop door, in combination with a track beneath said door, a door operating part movable on said track and a three-part compound lever operating from the side of the car, connected with said part upon said track and capable of greater movement than that which said part is allowed upon said track, substantially as described.

15. A car provided with a drop door, in combination with a door locking device beneath said door and a shifting-levera e mechanism for operating said device, su stantially as described.

16. A car provided with a drop door, in combination with a door lifting and locking device beneath said door and a shiftingleverage mechanism for operating said device, substantially as described.

17. In a dump car, the combination of a I car frame, dumping doors pivotally mount ed in such car frame movable to open and closed positions, a shaft reciprocatingly mounted beneath and supporting such doors, and supporting mechanism secured to the car frame having an upwardly and outwardly inclined su'p orting surface portion provided with a hooli or loop portion at its lower endfor limiting the inward and downward movement of the shaft and thereby the door andhaving a substantially horizontal supporting portion at the upper and outer end of such inclined portion for supporting the shaft in its outer raised position and thereby supporting the door in its closed position, substantially as described.

18. In a dump car, the combination of a dumping door, with a reciprocatory door supporting member in operative engagement with such door and movable upward and outward at an incline to close the door, and mechanism for operating said member transversely of the car, said'mechanism comprising a rock shaft extending longitudinally of the car and a crank and links substantially in alinement with the transverse path of movement of said reciprocatory member for operating it and thereby the door.

19. In a dump car, the combination of a dumping door, with a reciprocatory door supporting and operating member in operative engagement with such door and 'movable upward and outward transversely of the car'to close the door, and an operating shaft on the car and provided with cranks having their swinging ends connected with said door supporting member for operating the same; 5

20. In' a dump car, having a. frame comprising a center sill and cross sills, in combination with a dumping door, a door-operating member inoperative engagement with and movable relative to. the door, and an operating shaft mounted at the outer ends of the cross sills extending alongthe side of its bottom, in combination with a track or tracks beneath said door, said track or tracks bein inclined downwardly from the free edge 0 the door toward the pivotal axis of said do r, a part or parts movable on said track or tracks, a winding shaft extending. along the side of the-oar, means for operating said shaft, and mechanism or mechanisms connecting the'said shaft with said part or parts, and adapted to force the latter down or draw the. same upward upon said track or tracks, substantially as described.

22. A car provided with a drop d oor'in its bottom,- in combination with downwardly and inwardly inclined hangers or tracks arranged beneath said door, a wedge art or parts movable upon said tracks, a apted, when moved out and raised, to close said door, a rota the side of t e car, and a compound lever or levers positively connecting said wedge part or parts to the said rotary mechanism, substantially as described.

23. A car provided with a drop door, in combination with tracks arranged beneath point-adjacent; to the free end of the door, the door and inclined downwardly from a wedge devices for operation upon said tracks to raise and lock. said door or permit it to fall, and a compound lever or levers operatedfrom a point adjacent to the free end of said door, and adapted to move said weige devices, as and for the purpose specifie Q LA car provided with a drop door, in

combination with door raising and locking power mechanism at or upon mechanism located beneath said door, an o 25. A car. provided with a drop door, in combination with a downwardly and inwardly inclined track beneath the door, said track being provided with a level portion at its upper end in alinement with the inclined part of the track, a part movable upon the track and whereon the said door rests in all of its positions .and a suitable draft device for drawin said part upward and outward upon sai track to lift and lock said door, substantially as described.

26. A car provided with a drop door, in combination with wedge parts onwhich said door rests, tracks supporting said wedge parts and inclined downwardly in the direction of, the hinge of said door, a

, rotary part adjacent to the free-end of said door, compound levers actuated by said rotary part and in turn actuating said wedge arts and said compound levers being self-locking, substantially as described.

27. A'ca'r provided with a drop door, in combination with a suitable track arranged beneath the door and inclined downwardly from a point adjacent to the free end of said door, a wedge member movable on said 'track, for operating and supporting said door, a compound lever, means adjacent to the free end of said door for actuating said compound lever, to positively move said wedge device outwardly and upwardly to close the door, and inwardly and downwardl to open. the door, substantially as descri ed.

28. A car provided with a drop door, in combination with a winding or power shaft at the side of said car, tracks beneath said door and inclined downwardly from a point adjacent to the free end of the door, said tracks having fiat ortions at their upper ends in alinement with the inclined portions,

' a wedge device or roller interposed between each track and said door, and means in connection with said shaft for positively forcing said wedge devices ofi the fiat portions of said tracks, and also adapted to posi-' tively draw said devices outwardly and up wardly to close and lock said door, substantially as described.

29. A car provided with a plurality of drop doors, in combination with tracks arranged beneath said doors and inclined downwardly from points adjacent to the free ends of said doors, wedge devices interposed between said tracks and doors, a winding or power shaft at the side of said car, and a lurality of compound-levers connecting t e individual wedge devices with said shaft, for operation thereby, substantially as described.

30. A car provided With a plurality of drop doors, in combination with tracks arranged beneath the doors andinclined downwardly from' points adjacent to the free ends of said doors, wedge devices interposed between said tracks and doors, a winding or power shaft at the side of said car and approximately in the normal plane of said doors, and a plurality of compound levers connecting the individual wedge devices with said shaft, for operation thereby, substantially as described.

'31. A car provided with a lurality of drop doors, some of which are ocated over the car trucks, in combination with a winding or power shaft at the side of the car, inclined tracks arranged beneath said doors, wedge members movable thereon, a plurality of compound levers connecting said wedge members with said shaft, the dimensions of said levers and of said tracks varyingto correspond with the relative locations of said doors and said trucks, substantially as described.

32. A car provided with a drop door, having depending cams upon its under surface, in combination with tracks arranged beneath said door and inclined downwardly from apoint adjacent to the free end of said door, wedge devices revoluble upon said tracks, and'means upon the side of the car for actuating said wedge devices, substantially as described.

83. A car provided with a drop door, hav- I ingdepending cams upon its under surface,

in combination with tracks arranged beneath said door and inclined downwardly from a point adjacent to the free end of said door, wedge devices operable u on said tracks, and means 11 on the side 0 the car for positively actuatmg said wedge devices, in both directions, substantially as described. 34. A dump car having its floor mainly composed of a plurality of groups of drop doors, each door being hinged closely adjacent to the center line of the floor, in combination with door supporting and operating mechanisms arranged beneath said door's, means supporting said mechanisms, in such manner that the same are'vertically movable, and also movable toward and from the hinges of said doors, and crank shafts extending along the car sides for actuating said door supporting and operating mechanisms in groups corresponding to the groups of doors. I

35. A dump car having its floor mainly composed of a plurality of groups of drop doors each door being hinged closely adjacent to' the center line of the floor, in combination with door supporting and operating mechanisms arranged beneath said doors, means supporting said mechanisms. and adapting the same for movement V81-.' tically and toward and from the hinges of said doors, a crank shaft for each group of doors, and links forming a positive connection between said crank shaft and the group.

. supporting and operating mechanisms of its 36. A dump car havin its floor mainly composed of a plurality o groups of hinged drop doors in combination with door operating mechanisms, always engaged with the bottoms of respective doors for supporting the same in opened and closed positions, means supporting said mechanisms and adapting the same for vertical movement, and for movement toward and from the hin es of respective doors, and means exten ing alon the sides of the car for actuating 'said mec anisms.

37. A dump car havin its floor mainly composed of a plurality of groups of hinged drop doors, having their free ends normally in substantial abutment with the sides of the car, a door supporting and operating mechanism arranged beneath each said door, said mechanism com rising a reciprocating shaft, an inclined-tracfi supporting said shaft, and an operatingshaft extending lengthwise of the car for each group of doors for actuating respective groups of mechanisms.

38. A dump car havin its floor mainly composed of a plurality 0 groups of hinged drop doors, each door being hinged closely adjacent to the center line of the floor, having their ends normally in substantial abutment with the sides of the car, a door supporting and operating mechanism arranged beneath each said door, and a shaft extending along the side of the car and having independent connections with the mechanism beneath each door.

39. A dump car having a plurality of groups of drop doors, in combination with a supporting and operating mechanism beneat and movable relatively to each door, shafts extendin longitudinally at the sides of the car, one or each group of doors, and means connecting each said shaft with respective doorsupporting and operating mechanisms.

40. A dump car havin itsfloor mainly composed of a plurality of groups of hinged drop doors having their free ends in a substantial abutment with the sides of the car, each door being hinged closely adjacent to the center line of the floor, in combination with door operating mechanisms whereon said doors rest, and a crank shaft extending along the car side in connection with each group of doors for moving the mechanisms thereof vertically and transversely to raise and lower said doors.

ll. A dump car having its floor mainly composed of a plurality of groups of hinged drop'doors having their free ends in a substantial abutment with the sides of the car,

versely to raise and lower said doors, said mechanisms in one position being adapted to positively lock respective doors in closed position.

42. A dump car having its floor mainly composed of drop doors in combination with door operating means beneath and movable relative to each door and supportingthe same in both closed and extreme opened positions, shafts suitably journaled adjacent the sides of the car and extending longitudinally the car adjacent the free edges of said doors, and means connecting said shafts with individual door operating means, to raise and lower the same, and to move them beneath the free ends of the doors to lock them in closed position. i

43. A dump car having its floor mainly composed of a plurality of groups of hinged doors arran ed on opposite sides of the center line, an when closed, having their free ends in substantial abutment with the sides of the car, each door being hinged closely adjacent to the center line of the floor, in combination with door supporting and operating mechanisms arranged beneath said doors, means supporting each said mechanism in such manner that it is adapted for vertical movement, and for movement toward and from the centerline of the car, and crank shafts extending along the sides of the car for actuating said mechanisms in groups correspondin to the groups of doors.

44. A dump car, iaving sides and ends and an underframe the latter composed of longitudinal members and cross sills or bearers, in combination with doors hinged in the openlngs of said underframe and extending substantially to the ends of said cross bearers, an operating mechanism beneath each said door and longitudinally extending operating shafts at the ends of said cross bearers, said shafts being each connected with the mechanisms of its respective group of doors to operate the same simultaneously.

45. A dump car havin an underframe composed of longitudina and transverse members, in combination with drop doors filling the o enings in said underframe, the

free ends 0 said doors extending substantially to the ends of said transversemem hers, said doors forming portions of the car floor, a longitudinally extending shaft arranged at the ends of said transverse memhers beneath the floor line of the car, operating mechanisms su porting said doors and movable toward an from the longitudinal axis of the car and suitable devices connecting said mechanisms with said shaft for operation thereby, substantially as described.

46. A dump car having a plurality of door openings in its-bottom, in combination with dumping doors normall closing said openings and forming part 0 the car floor,

the same in closed and opened positions and means extending lengthwise at the side of the car for operating said shaftto raise and.

lower said doors simultaneously.

47. A car having a plurality .of dumping doors in its bottom, in' combination with hangers depending from the car under-- frame, each hanger comprising an intermediate inclined portion and terminal vertical portions, a shaft supported by said hangers for operating said doors, said shaft being movable from and toward the axis of the car and also vertically and means for thus moving said shaft.

48. A car having a plurality of dumping doors in its bottom, in combination with hangers depending from the car, a shaft supported by said hangersfor operating said doors, said shaft being movable from and toward the axis of the car and also .vertically and longitudinally extending means at the side of the car for thus moving said shaft.

49. A dump car having an opening in its bottom, in combination with a dumping door forming part of the car floor said door being hinged on a line parallel with the longitudinal axis of the car, and extending to the side of the car; hangers depending from the car underframe, each hanger com rising an intermediate inclined portion an terminal vertical portions, a door-operating shaft supported by said hangers and carrying parts in rolling contact with the bottom of said door, and means for operating said shaft in said hangers, to lower said door and to raise the same.

50. A dump car having an opening in its bottom, in combination wlth a dumping door formingpart of the car floor, said door being hinged on a line parallel with the longitudinalaxis of the car, and extending 'to the side of the car; hangers depending from the car underframe,-a door operating shaft sup-. ported by said hangers .and carrying parts in rolling contact with the bottom of said door, each hangercomprising an intermediate inclined portion-and terminal vertical portions and means for operatin said shaft in said hangers to lower said oor and to raise and lock the same in raised position.

. 51. A dump car comprising an underframe composed of members disposed at right an- :gles and having a floor mainly composed of two sets of dumping doors hinged adjacent to the longitudinal axis of the car and extending to the car sides and from end to end of the car, the doors at the ends ofthe car being hinged at a greater distance from the longitudinal axis of the car than are doors in the middle portion of the car, in combinafor the doors, and means for operating the shaft.

52. A dump c'ar comprising an underframe composed of members disposed at right angles and having a floor comprising two sets of dumping doors hinged adjacent to the longitudinal axis of the car and extending to the car sides and from end to-end of the car, the doors at the ends of the car being hinged at a greater distance from the longitudinal axis of the car than, are the doors in the middle portion of the car, in combination with door-operating mechanisms sus pended from said underframe and adapted to support said doors in both opened and composed of members disposed at rightantion with a supporting and operating shaft gles and having a floor mainly composed-pf two sets" of dumping doors hinged adjacent to the longitudinal axis of the car. and' extending'to the car sides and from endtoz'end' of the car, .he doors at the ends of the car being hing -at a greater distance from the longitudinal axis of the car than are the doors at the middle portion of the car, in

combination with-a supporting and operating shaft for said doors and shafts at the sides of the car adapted to operate the supporting shafts. a

54. dump car having an underframe composed of members disposed at right angles and having a floor mainly composed of two sets of dumping doors hinged adjacent to the longitudinal axis of thecar and extending to the car sides and from end to endof the car, the doors at the ends of the car being hinged at a greater distance from the longitudinal axis of thecar thanare the doors'at the middle portion of the car, in combination'with inclined hangers depending from said underframe, the hangers beneath the end doors of the car being smaller than the others, Wedge devices adapted for ranged at the sides of the car for actuating said wedge'devices.

55. "A dump car comprising an underframe composed of members disposed at right anglefaand having a floor mainly composed of two'sets of dumping doors hinged adjacent to the longitudinal axis of the car and extending to the carsides and from end to end of the car, the doors at the ends of the car being hing'ed'at a greater distance from the longitudinal axis of the car than are the doors at the middle portion of the car, in

movement on said hangers and supporting respective doors; and operating shafts arcombination with inclined tracks or hangers beneath said doors, wedge devices movable thereon, connecting shafts which are common td the wedge devices ofthe end doors, other connecting shafts common to the wedge devices of the middle doors and means at the sides of the car for moving said shafts transversely of the car to raise and lower said doors.

56. A dump car comprising an underframe composed of members disposed at right angles and having a floor mainly composed of two sets of dumping doors hinged adjacent to the longitudinal axis of the car and extending to the car sides and from end to end 'of the car, the doors at the ends of the car 57. A dump car comprising an underframe compose of members disposed at right angles and aving a floor mainly composed of two sets of dumping doors hinged adjacent to the longitudinal axis of the car and extending to the car sides and from end to end of the car, in combination with inclined tracks or hangers beneath said doors, door supporting wedge devices movable thereon, connecting shafts which are common to the wedge devices of the end doors, other connectmg shafts cormnon to the wedge devices of the middle doors, operating shafts disposed at the ends of the transverse members of the underframe and each connected with and common to a plurality of end and middle door connecting shafts '&I1d mechanisms.

58. In a dump car an underframe, in combination with a plurality of doors constituting a port-ion of the floor of the car, inclined ways suspended from said nnderframe be tween each pair of doors, wedging members movable on said ways and supporting respective doors, and a shaft arranged at the side of the car and coextensive with the series of doors thus supported.

59. A dump car comprising an underframe, sides and ends, in combination with two sets of dumping doors extending from end to end bf the car and to the sides thereof, shafts arranged at the sides of the car, means connected with. said shafts for raising and locking said doors and for unlocking and lowering said doors, the first portion of the porting and operatin movement of said shaft in one direction being utilizedto unlock said doors, and the last portion of the movement of the shaft in the opposite direction being utilized to lock said doors.

60. dump car having a floor forming- -door in combination with a door operating -member adapted for lateral non-rotative reciprocation beneath said door to support the same inopened and closed positions, a track supporting sa1d member, parts on said member in rolling contact with said door and means for operating said member.

61. A dump car having a floor forming door, in combination with a door operating. member adapted for lateral non-rotative reciprocation beneath said door to support the same in opened and closed positions, parts on said members in rolling contact with said doorand an actuatin shaft located adjacent to the free end of said door for reciprocating said member.

62. A dump car having a floor forming door, in combination with inclined hangers arranged beneath said door, a member adapted for lateral non-rotative reciprocation on said hangers and carrying rotary parts which support said door in opened and closed positions and an actuating shaft at the side of the car for reciprocating said member. v

, ,63. A dump car having a door opening in its fioor,'in combination with a dumping door hinged therein, a reciprocatory door supporting and operating member in operative engagement with said door to raise and -lower the same and an operating shaft on the side of the car and provided with cranks having their swinging ends connected with said member for operating the same, substantially as described.

64. A dump car having a door opening in its floor, in combination with a dumping door hinged therein, a reciprocatory door supportingand operating members in operative engagement with said door to raise and lower the same, an operating shaft on the side of the car and provided with cranks having their swinging ends connected with said members for operating the same, said cranks in one position operating to lock said members in raised position thereb locking said door substantially as describe 65. A dump car having a door opening in its floor, in combination with a dumping door hinged therein, a reciprocatory sup- 0 member in rolling engagement with said d oor, an operating shaft at the side of the car, cranks thereon, said cranks being connected withsaid member and in one position "0 crating to lock the same and thereby said oor.

86. A dump car having a plurality of floor forming dro doors hinged adjacent to the longitudina axis of the car and extending into sabstantial engagement with the side of the car, in combination with a raising and locking them;

- spective doors,

67. A dump carhaving a plurality of floor forming drop doors-hinged adjacent to the longitudinal axis of the car, in combination with a door supporting and operating shaft, a rocking shaft arranged at the side of the car beneath the floor, lever means operatively connecting said shaft with said supporting shaft, means for turning said rocking shaft and the first part of the movement of said shaft in one direction being adapted to unlock said door and the last part of the movement thereofin the other direction being adapted to lock said door.

68. A car provided with drop doors, in combination with vertically and laterally bodily movable devices operating individually upon each of said doors after the manner of a wedge to raise and lower the same, and means extending along the side ofthe car and connected separately to each of said devices.

69. A car provided with a drop door, in combination with a part or member whereon said door rests when open, and means at the sideof the car for movingsaid part outwardly and 70. A dump car comprising sides and ends and'an underframe, the latter containing a plurality of door openings, in combination with doors arranged in said openings and hinged parallel with the longitudinal axis of the underframe, each said door extending into substantial abutment with the side of the car, door actuating mechanisms comprising movable members and supporting tracks suspended from the'underframe beneath reand means at theside of the car for actuating said mechanisms to simultaneously open and close said doors.

71. A dinnp car,-=; .comprising sides and ends and an underframe, the latter containing a plurality ofjddor openings, in combination with drop'doorshinged in said openings and normally'constituting parts of the car floor, .mechanism"s comprising movable members and supportingtracks arranged beneath said doors and continuously supporting the same and a shaft at the side of the car connected with said mechanisms for actuating the same to open'and close said doors.

'(2. A dump car, comprising sides and ends and an underframe, thelatter containing a plurality of door openings, in combination. with drop doors hinged in said openlugs and normally constituting parts of the car floor, -mechani sms comprising movable membersv and supporting 73. A- dump floor forming doors said underframe tracks and members in rolling contact w th respective doors said upwardly to raise'said door.

adapted to tracks arranged beheath said doors and continuously supporting the same and a shaft at the side of the and an underframe, 1n combination with frame, door supporting and operating mechanisms hanging-by vertical supports from and comprising stationary and means for simultaneously operating said mechanisms to raise and lower said doors.

74. A dump car comprising sides and ends and an underframe, in combination with floor forming doors hinged-in said underframe, door supporting tracks hanglng from said underframes and operating mechanisms for each door in rolling contact with respective doors and means extending along the side of the car for simultaneously operating said mechanisms to raise and. lower doors. Y I 4 75. A dump car having its floor mainly composed of drop with the longitudinal axis of the car and extending into substantial abutment with the sides of the car, in combination with door supporting shafts arranged beneath hinged in said under-' doors hinged parallel A car com IISIHO sides and ends said doors on the opposit esides of the axis of thecar, rollers thereon directly supporting respective doors supporting tracks for said shafts hanging lay-vertical supports from the underframe of the car and means for operating saidshafts to move said rollers transversely of the car to raise and lower said doors.

A dumping, car having an under-frame comprising a center sill and transverse members, drop doors hinged longitudinally of the caradjacent the center sill, and extend ing substantially to the ends of said transverse members, door beneath the doors and hav1ng",:a-movement of translation relative thereto,-kand rocking shafts at the ends of said transverse members connected to the-door'sup porting mechanism, link connections between said rocking shafts and supporting mechanism operative 76. A dumping car having an underframe said doors, a rocking shaft-- supporting mechanism under tension and compression for raisin and lowering the doors by reclp'rocatlng said supporting mechanism.

78. A dump car provided with a plurality of floor forming drop doors, in combination with tracks hanging from the car and extending downwardly in thedirection of the hinged ends of said doors, a door supporting member movable on said tracks to raise and lower said door said tracks being at all points relatively remote from the hinged ends of the doors. l

7 9. A dump carprovided with av plurality of floor forming drop doors, in combination with tracks hanging from the car and extending downwardly in thedirectiou of the hinged ends of said doors, a door sup orting member havin rollers engaged wit re-., spective doors and to raise and lowersaid door said tracks being at all points relatively remote from the hinged ends of the doors.

80. In a dump car, a downwardly opening door, hinges connectin said door to the car, tracks beneath said door inclining downwardly toward thehinge axis thereof, a door support movable between said-tracks and door toclose said demand to permit it to drop, and stops at the lowerends of said tracks, said stops being sufficiently remote from said hinges to arrest thedownward movement of said door without injurious strain to said hinges.

81.A dump car having a plurality of groups of drop doors, in combination with a supporting and operating mechanism beneath each door, a dependlngcam on each door, longitudinally. rotatable shafts at the sides of the car,one for each group of doors, and means connecting each said shaft with respective door supporting and *operating mechanisms.

82. A dump car having its floor mainly composed of drop doors extending into substantial abutment with the sides of the car and rocking shafts arranged at the sides of the car, inclined tracks beneath said doors, operating members betweensaidtracks and doors for raising, lowering and locking the same, and connections between said rock shafts and operating members.

.83. A dump car having a plurality of floor farming drop doors, in combination with incwned tracks arranged beneath said doors, parts movable on said tracks and sup orting said doors in both opened and"close d p081? tions, .rocking shafts arranged at the sides of the car and means connecting said shafts with individual parts on said tracks for opmovable on said trackserating the same to raise'and lower said doors.

7 84.111 a car of the class described, a dumping door provided on its under surface with an inclined track, a co-acting inclined track secured to the car frame, a re ciprocatory shaft co-acting with said tracks, and means for actuating said shaft.

.85. In a car of the class described, an underframe comprising a center sill and cross members, dump doors, inclined tracks depending from and secured to said cross members, and operating means coacting with said tracks and' doors. a

86. In a car-of the class described, an underframe comprising a center sill and cross members, dump doors, supporting tracks each comprising an inclined intermediate part, and substantially vertical end parts secured to said cross members, and operating. means coactingwith said tracks'and doors. I

87. In a dump car," a center sill, cross members, floor forming doors hinged adja- .cent the center sill, supports beneath said doors and movable transversely of the hinge axis thereof, a longitudinally extending shaft journaled adjacent the car side, crank arms onsaid shaft, and links extending from said crank arms to said supports for moving them toward and from thehinge axis of said. doors,'the parts being so proportioned and arranged that when said doors are-closed said crank arms and the links directly connected thereto lie adjacent the car side.

a 88. In a car, floor formin doors, suports beneath and movable re ative to said core, a rocking shaft adjacent the free edges of said doors, and link connections between saidshaft and supports "operative ,under compression and tension for moving sald supports respectively toward and from the hinge axis of'said doors.

89. In a dump km, a downwardly opening hinged door, and tracks beneath said door, each of said tracks comprising aninclined section upturned at its lower end to form a stop, said stop bein sufficiently remote from thehinge of sai door to arrest its downward movement Without injurious strain to the hingew In testimony whereof, I have hereunto set .my hand 'this'lst day of March A. D., 1904,

at'St. Louis, Missouri, in the presence of two witnesses.

. ARTHUR LIPSOHUTZ.

Witnesses:

Hnnnnnr W. WoLrr, WM. STEVENSON.

Corrections m Lettets P atent No. 957,616

g It is hereby certified that in Letters Patnt No. 957,616, granted May 10,1910;

E upon the application of A1'thur Lipschutz, of St. Louis, Missouri, for an improvei ment in DumpCars errops appear in the printed specification requiring correction Letters Patent should beread with these currectiuns threin that the sam may conform tuthe record pf the case inthe Patent O fl ice.

Signed and sealed this 21stday 0f June, A. 1).;1910.

' I F. A. TENNANT,

.[SEAL] Acting Commissioner of Patnts,

us follows: Page 5, lines 112 and 11 3 st ould be trimsposed; and page fL-line 77 Before the words the car the word of should be inserted; and that the saiti,

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