US2199554A - Dump car - Google Patents

Description

May 7, 1940. J. P. ANDERSON DUMP CAR Filed May 17, 1938 3 Sheets-Sheet 1 :s- I ATTO EY INVENTOR BY May7, 1940.

J. P. ANDERSON DUMP CAR Filed May 17, 1938 v3 Sheets-Sheet 2 INVENTOR (a 'j BY as. ATTO EY May 7, 1940. p ANDERSON 2,199,554

DUMP CAR Filed May 17, 1953 3 Sheets-Sheet 5 INVESOR 6 BY a s. ATTO EY Patented May 7, 1940 ,f -jumrab STATES,

f 54.13 a DUMP John P. Anderson, Grafton, P a assignor -to-= I 'Pressed Steel Car Company, Inc}, Pittsburgh, Pa., a corporation of Pennsylvania Application May 17, 19 8i: serial- No; 208,444 11 p H 'vfolain s. (outsam) The invention pertains generally to dump ve-.

hicles having doors forming the side walls of the body and opening outwardly and downwardly as the body is tilted for dumping. The invention pertains specifically to a mechanism for controlling the opening and closing of the doors throughmovement of the body relative to the underframe.

Railway dump vehicles having tilting bodies v provided with doors forming end or side walls of the body are generally automatic in operation. Usually a body tilting mechanism actuated by fluid pressure is mounted upon the vehicle under-.

frame and in engagementwith the vehicle body. A separatemechanism for controlling the move ments of the side and end doors is connected to the doors and mounted on the body or the underframe. The body in normal position acts through the door controlling mechanism to maintain the doors locked in closed position and the bodyin moving from normal to tilted or'dumped position andback to normal position actuates the said mechanism to control the opening movements of the descending door by th'e rate of tilting of the 0 body and positively move the open door to closed position as the body moves to normal position. Usually the door mechanism includes a means for automatically retaining the door on the rising side of the body closed whilst the body is out body is exposed to the weather and oftentimes becomes wet and freezes to the side walls, or the lading may be of a damp sticky nature and naturally adheres to the wallsiof the body. It sometimes happens that the door on thedescending side of the body strikes an obstruction at the sidesof the tracks and cannot open when-the body is tilted. For these reasons it is preferable toprovidethe door controlling mechanism with o U anism of the character described which will hold the doors closed when the body isin normal position, whichwill release the descending doorfor opening as the body is tilted for dumping, and which will positively close the opened door when the body is returned to normal position.

Another object of the invention is toprovide a door mechanism of the character described with means whereby the opening movement -.-of-

co thedescending door ofthe tilting body is con sage of door mechanism."

of normal position. The lading within the car vehicle with an automatic door controlling meche trolled by movement of the 'body and the door is actuatedsolely by gravity and the Weight of lading against the doorw 'A furtherobject oi -the invention is toprovide such a'door mechanismwith'm'eans 'for'flmain taining thedooron the rising side of the body closed as the body moves fromnormal to position and-back tonormal position:

dump

v In the drawings forming partof this specifl'-- r cation, Figfl shows a vertical transverse section thI'QlEh a railway dump car embodying'the in: vention and having the bodyinnormal position;

Fig; 2shows a 'similarisection throughthe car" with the bodyin fully tilted position; Fig. 3 shows a section onl ines'3 '3 of Fig. 1; Fig.4 is as'ection on lines 4 4 of Fig.1; Fig.5 is a 'view on line 5-5 of Fig. 1 at the side of the carshowing the connections between the locking bars, the

body and the underframe; Fig; 6 is a, section taken on lines 6--6 of-Fig'. l'showing the end bracing of the body and the disposition of the doormechanism beneath the lading retaining sloping end wall of the body} Fig.7 shows a detail of the opening in the end'bracingfor pas- Referring now in'detail to the drawings, reference character 1 indicates the car underframe comprising a center sill structure 2 having later-'- ally disposed members -3'secured toeach-side thereof and spaced longitudinally;thereof; Said members 3 have bearing-*surfacefs adjacent the outer ends thereof for supporting'the body in normalposition and ;in dumpingposition. The

outermost surfacesA are preferably concave "to providea pivotal support-for the dumping body.

Thebody is indicated generally by the reference character 5' an d. comprises longitudinally disposed sills B and side sills T'with transverse diaphragms 8-'connecting the sills 6. andtransversediaphragms 9 connecting the adjacentsills 6 and side sills I. -"I'he'"side walls Ofith Ei body are formed of doors I0 pivotally mounted on hinge pins ll'journa'led in bearings secured to the side sills "I. Aladingyretaining fioor l2 extends over the longitudinal sills 6 and 1 and extends beyond '-the' innerlower face of the side doors Ill." The end lading retaining walls [3 of the body are preferably inclined inwardly of the bodyandc'o'nnected tothe floor I2. These walls Bare braced longitudinally of the body by means arena posts H connected to the longitudinal sills 6 andangle posts secured to the other'sills of the body. ,The outer flanges of posts 14 are joined by plate liforming a cover-for the doorcontrolling mechanism'to be hereinafter 'described.- This plate 1| 5' has an outwardly extending offset, I 6 i which overlaps a toe plate ll secured to the un- -derframe' 2 to prevent injury to an operator standing on the end platform'of the car.

Each door controlling mechanism comprises a crank l8 pivotally mounted on a shaft l9 journaled in bearings preferably secured to the end posts. 54. Each end post has an opening 32 in the web'thereof to permitthe'passage of the crank 18. The outer end of the crank l8 h'asa pin 29 journaled therein for the purpose of connecting thecrank to the link 21 pivotally mount ed on a pin 22 journaled in a downward extenr y sion 2.3 of the door stake 24. It will be noted that the link 2! is in two parts, the outer part being threaded into the inner part for the purpose of longitudinal adjustment of link 21. The inner end of the crank I8 is bifurcated adjacent the,

the preferred form of connection comprises a link 23 disposed transversely of the underframe.

One end of link 28 is pivotally connected to the opposite side ;of the underframe by means of the pin 2S-and the other end-of link 28 is pivotally connected by means of the pin 30 to a bracket 3| mounted on the body adjacent the shaft I9. It will be observed upon referenceto Fig. 1 of the drawings that each door forming the respective side walls of the car has two such door controlling mechanisms connected thereto, said mechanisms being disposed beyond the end wall l3 of the body and housed between the end wall 13 and the end plate l5.

Upon reference to Fig. 3 of .the drawings, it will be observed that cranks 18 on opposite sides of the same end" of the body are in substantially the same transverse vertical plane and that the inner end of the crank 13 at one side of the car is offset inwardly andthe inner end of the opposite crank is offset outwardly of the'said plane. This offsetting is. for the'purpose of connecting the links 27 and 28 so as to prevent interference, whenthe body is dumping, between the. links 28 having their ends alternately connected to the body and to the underframe.

Referring now to Fig; 1 of the drawings showing the body in normal position, the forces of the lading-withinthe body-and gravity acting on each door It tends to rotate the associated crank l8 inwardly of the car which rotationis resisted by the link 21 and its associated link 28 acting through the crank 25 in engagement with the-bifurcation in crank I81. "Therefore, link 21 is in compression whilst the body is in normal position.

When, the body is tilted about the right side of the underframe and the body bearing; moves on to the underframe bearing surface 4, cranks l8 and 25, mounted on shaft l9 secured to the body, move away from the underframe, placing link 21 in tension and causing crank 2 5 to rotate inwardly of the "car andaway from crank l8. Crank l3 being'then free to move can rotate inwardly of the'caras the door Ill opens under the forces of gravity and the lading within the body. From the above it is obvious that the rate of opening of the door, I0 is dependent upon the 'rate at which thetilting body moves crank 25 away from crank l8 and that the .sole means actuating the door is the force of gravity. and weight of lading upon the door. If for any reason the door should be stopped intermediate its closed and fully opened positions, the body can continue its dumping movement without injury to the door mechanism. .The door mechanism as disclosed in the drawings is so proportioned that the door reaches a fully opened position before I the body reaches its maximum dumping angle. For-the purpose of stopping the door after it'reaches its fully opened position, which is a position at or below the plane of the floor of the body, the stop 32 engages the door stake extension 23 and prevents further rotation of the door on its hinge pin I l.

When the body is righted so as to be returned from the position shown in Fig. 2, to that shown in Fig. 1, the link 21 is placed in compression, rotating cranks 25 and It in a direction toward the adjacent side of the car, thereby causing door ID to rotate to closed position as the body reaches normal position. On the left or rising side of the body, during the. above described movements of the body, link 28 through its attachment to the car body, by means of bracket 3! and pin 30, moves with the body and maintains the mechanism associated with the rising side of the body in the same position relative to the door and body as when the body is in normal position, thereby retaining the door in closed position,

When the car body is tilted about the left side ofthe 'underframe, the same movements of the door mechanism attached to the door on the left side take place as previously described for the mechanism attached to the door on the right side of the body.

It will be observed upon reference to Fig. 2 of the drawings that the body in tilting has a small lateral movement relative to the underframe and that the links 28 are not pivoted to the underthe links 28 have a slotted connection to the underframe. Obviously these slotted connections will be unnecessary if the body moves about fixed trunnions or the links are pivoted to the underframe on the tilting'axis of the body.

This application is a substitute for aban- H doned application, Serial No. 115,966, filed December 15, 1936, and is a continuation in part of my co,pending application, Serial No. 390,731, filed September 6, 1929.

I'o those skilled in the art of designing and I building door controlling mechanisms for tilting body dump vehicles many changes in the detail construction of the various members and within the scope of the appended claims will suggest themselves. It is to be understood I do not wish to limit myself to details of construction as =i1- lustrated by the drawings except as made necessary by the scope of the appended claims.

Having thus described the invention what I claim as new. and desire to secure by Letters Patent is:

' -1.In a dump vehicle in combination, an underframe, a bodysupported thereon in stable equilibrium and tilting to opposite sides thereof,

, doors forming opposite side walls of the body and hinged adjacent the floor thereof, an arm depending from each door at each end thereof, a crank and link connection between each door arm and theadjacent'end of the body and of such design as to rotate inwardlyand upwardly with w the opening of the door, a link pivoted'to the body adjacent the end of each door and extending transversely of the underframe to a pivotal connection therewith so as to move with the bodywhen the lattertilts about thesideof the underframe to which the transverse link is connected, a crank and link connection between each said transverse link and the body adjacent said connection of the transverse link and body, and means on adjacent cranks engaging to restrain rotation of the first-named crank when the body is in normal position and when the adjacent side of the body is elevated above the underframe, said crank and link connection to the transverse link being controlled thereby so as to rotate relatively to the body and underframe when the body moves relative to said transverse link.

2. In a dump vehicle, an underframe, a body supported on the underframe in stable equilibrium when in normal position and pivoting toward either side of the underframe when out of normal position, doors forming side walls of the body and hinged adjacent the floor thereof, a crank on the body adjacent each end of each door, a link connection between each said crank and door, said crank and link forming a compression lock for the respective door when the body is in normal position, and means associated with each crank, the adjacent side of the body and the opposite side of the underframe for maintaining said compression lock when the body is in normal position and when the side of the body adjacent the door is out of engagement with the underframe, each said means including a member pivotally mounted on the body and normally in engagement with said crank and an operable connection between said means and underframe whereby movement of the body in dumping about the adjacent side of the underframe actuates said means to release the said crank for rotation to permit opening of the door and positively actuates the crank to close the door when the body is returned to normal position.

3. In a dump vehicle, an underframe, a body supported on bearings spaced laterally of the underframe and selectively tiltable on said bearings to either side of the underframe, doors forming the side walls of the body and hinged adjacent the floor thereof, independent mechanisms at each side of the body and spaced longitudinally of the doors for controlling the respective doors, each said mechanism including a shaft mounted on the body adjacent the respective door, a crank pivoting on said shaft, a link connecting said crank and door below said hinge connection thereof, a second crank pivoting on said shaft, a link disposed transversely of the underframe and having one end connected to the body adjacent the respective door and the other end connected to the opposite side of the underframe, a link connection between said second crank and the said transversely disposed link and an abutment on one of said cranks engaging the other crank for limiting relative pivotal movement in one direction between said cranks. 4. In a dump vehicle, in combination, an underframe, a lading body tiltable thereon and provided with doors hinged adjacent the floor of the body to form side walls thereof, each door being provided with a portion adjacent each end thereof depending below the hinge connection and moving beneath the plane ofthe floor of the body when the door swings on the hinge connec tion, a crank mounted on the body adjacent each end of each door, a link connection between each crank and the adjacent depending portion of the door, an abutment member rotatably mounted on the body adjacent each crank andmovable relative thereto and means associated with the opposite side of the underframe, the adjacent side of the body and the abutment member for rotating the abutment member alternately away from and toward the adjacent door when the body is tilted and then righted about the adjacent side of the underframe and for maintaining the abutment member fixed relative to the associated crank to prevent rotation thereof when the body is dumping to the opposite side of the underframe.

5. In a dump vehicle of the character described, in combination, an underframe, a body supported thereon and tiltable toward either side thereof, said body including end walls rigid with the body and reinforced by upright posts secured to the body adjacent each side of the end wall,

side walls for said body comprising doors hinged adjacent the floor of the body and extending between said rigid end walls, and door controlling mechanisms mounted on the end posts adjacent each door, each mechanism having a suitable portion extending through an aperture in the sup porting post and connected with the door.

6. In adump vehicle in combination, an underframe, albody supported thereon for selective tilting movement about each side of said under- I frame, doors forming opposite side walls of said body and hinged adjacent the floor thereof, a door controllin mechanism mounted on the body adjacent each door for locking the doors in closed position when the body is horizontal, for selectively releasing the door at the discharging side of the body for opening and for returning the 5 opened door to closed position as the body moves in dumping, each mechanism including a crank pivoted to the, body, a link connection between each crank and adjacent door, an abutment pivoted to the body adjacent each crank and normally engaging therewith and an operable connection between each abutment, the adjacent side of the body and the opposite side of the underframe for selectively moving the abutment from and to normal position in controlling the door at the discharging side of the body as the body moves in dumping.

'7. In a dump vehicle in combination, an underframe, a body comprising longitudinally disposed side sills extending substantially the length of the body, intermediate longitudinal sills, transverse sills connecting said longitudinal sills, end posts extending above each said intermediate sill at each end thereof and secured thereto, each said end post having asubstantiallyl vertical outer face portion and an inner facev extending outwardly and upwardly from the associated sill, a floor plate supported by said longitudinal sills, end walls supported by said inner faces of the end posts and connected with said posts and floor plate, doors forming body side walls and hinged to said side sills, controlling mechanisms for each door disposed between the inner and outer faces of said end posts, each mechanism including a member pivotally supported upon the adjacent end post and extending through an aperture in the post, and means supporting said body upon said underframe for tilting towards the opposite sides thereof. i

JOHN P. ANDERSON.

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