US1811382A - Dumping truck - Google Patents

Description

June 23, 1931. E. P. BOYRDEAUX DUMPING TRUCK 4 Sheets-Sheet Filed Dec. 15, 1930 51 mam bo a raeaaxf June 23, 1931.

E BORDEAUX DUMPING TRUCK Fild Dec. 4 Sheets-Sheet 2 Z. R Bordea ax.

' June 23, 1931. E. RBORDEAUX DUMPING TRUCK Filed Dec. 15,. 1950 4 Sheets-Sheet 3 E. Bordeaux I June 23, 1931. E. P. BORDEAUX DUMPING TRUCK Filed bee 15, 1930 4 Sheets-Sheet 4 27 E Bordeaux.

I nz W Patented June 23, 1931 if NirED VSTTES PATET orrice EP I- IRIAM P. BORDEAUX, OF GALION, OHIO, ASSIGNOR TO PERFECTION STEEL BODY 1 COMPANY, OF GALION, OHIO, A CORPORATION OF OHIO DUMPING TRUCK Application filed December 15, 1930. Serial No. 502,521.

I An object of this invention is to provide a I dumping body mounted upon the chassis of a motor truck in such manner that it will be nicely. balanced and may be easily tilted into dumping posit-ion and will be held against movement upon and off the chassis at all times.

7 Another object of the invention is to pro I movement of the body will be automatically stopped when it has reached the upper limit of its dumping position and when it has returned to'the reposing or carrying position. The invention also has for its object the provision of novel means for controlling the hoisting movement, and a novel mounting for the body whereby it may be easily tilted and will be guided in its tilting movement so that it will always be in the proper relation to the truck chassis.

These stated objects, and other objects which will incidentally appear in the course ofthe following description, are'attained in i such a mechanism as is illustrated in the accompanying drawings, and the invention resides in'certain novel features which will be hereinafter fully described and then more particularly pointed out in the appended claims- In thedrawings:

Figure 1 is a side elevation with parts in section of a dumping body truck having my invention embodied therein,.

" Fig. 2 is a plan View of the chassis and the Fig. 8 is a section on the line 88 of Fig. 7.

In the drawings, the reference numeral 1 indicates the chassis of a motor truck which may be of any known or approved form. The numeral 2 designates the drivers cab. The numeral 3 designates the dumping body, and the numeral 4 indicates the transmission case in which is housed a train of gearing whereby power from the engine is transmitted to the rear wheels of the truck for propelling the same, the propeller shaft being omitted,

but a portion of the same being indicated at 5, as will be understood.

. In carrying out the present invention, there is secured upon the chassis of the truck an auxiliary frame comprising sills 6, which are placed directly upon the sills or side beams of the chassis, and cross bars 7, 8 and 9 resting on said sills 6, the front and intermediate bars 7 and 8 being angle bars, while the rear cross bar 9 is shown as a channel bar. These sills and cross bars are secured to the chassis beams by securing bolts, indicated at 10 in Fig. 3. Abutting the rear side of the intermediate bar 8, at the ends of the same, are brackets 11 which are formed of angle bars, and resting upon and secured to these brackets and the base of the rear beam 9 are track bars or guides 12 which are also angle bars having their vertical flanges disposed at the inner edges of their respective horizontal webs or flanges. The horizontal webs ofthese track bars are providedwith proj ections 13 in their rear portions, the purpose of which will presently appear, and these projections may be conveniently provided by inserting headed rivets through openings formed through the horizontal flanges of the track and upsetting the rivets so as to secure them in place. The projections may be formed integral with the track, or otherwise provided, as will be obvious. Disposed inwardly from the side beams of the truck chassis and the sills 6 and at opposite sides of the medial longitudinal line of the chassis are longitudinal beams 14 which extend between and are secured to the beams 7 and 8 so as to be supported thereby, as shown in Fig. 2. The purpose of these beams will presently appear. The dumping body 3 may be of any shape or preferred form and is shown in the present drawings as havingits bottom rein forced by beams extending from end to end thereof; Secured to the bottom of the dumpingbody adjacent opposite sides of the same and slightly to the rear of the center thereof are rockers 16 which may be castings or may be formed of channel bars bent into an arcuate form, the ends of the bars being permanently attached to thebottom of the body by brazing,welding or other means. The rockers are disposed to rest upon the tracks 12, as shown in Figs. 3 and 4, and in the rear portions of the rockers are provided openings 17 which correspond inrnumberto the projections 13 whereby, as the body is tilted to the position shown by dottedlines in Fig. I, the openings will successively engage the said projections and slipping ofthe body will be thereby prevented. The engage- '19 at its end portions which are disposed respectively above the rockers and below the tracks, these heads having convex surfaces presente'dto the rockers and the tracks so that :the retaining links orbolts may readily accommodate themselves to the varying positions of the dumping body and will beprevented from being drawn through either opening. The heads 19 may be removable elements fitted upon the ends of the coupling.

links orbolts and held in place'by nuts 20 mounted upon the bolts at the outer sides of the heads. j p I In accordance with my invention, an opening 2l is formed in the bottom of the transmission housing 4 and to the bottom of said housing, beneath said opening, is secured a gearca'sing 22 in which is mounted power take-off mechanism. Supported by end walls of the casing 22 is a rod or stationary shaft 23 upon which is loosely mounted a gear24 which may rotate on said rod or shaft and which is fixed to a gear 25, said gears 24 and 25 being disposed adjacent opposite ends of the casing. The gear 24 is so located as to mesh with a gear 26,,forming an element of the transmission, when the take-off mechanism is assembled in place and remains constantly in mesh with said gear 26 which always rotates in one direction. When the motor is running, the gear 26, and consequently the gears 24 and 25, will constantly rotate; Disposedin the casing 22 I below ndat opposite sides of the vertical plane of the shaft 23 are gears 27 and 28, the gear 27 being splined upon a drive shaft 29 where by it may he slid along said shaft but is constrained to impart rotation thereto whenever it is, itself, rotated. The gear 2 8 iszmounted upon a shaft "30, which is-fitted 'into end walls'of the casing 22, and meshes-continuously with the gear 25, while the gear 27 may be'shifted so as to mesh with the gear '24 or with the gear 28. The hub of the gear 27 is formed'with a circumferentially extending groove 31 in which is engaged the forked end 32 of anarm 33 which is secured upon a shifting rod-34, said rod 34 projecting through the rear end of an extension of the gear case and having its rear end pivoted to the lower end of a hand lever 35 whichextends up. into the cab 2 and is .pivotally mounted upon a side of thetransmission housing 4, or upon abracket 36 secured to said housing. It. will now be'understood that if the lever 35 be setin a vertical position, the gear 27 will be shifted to a position intermediate of thegearsk24 and 28 andconsequentlywill be in neutralposition and no movementwill be imparted to thedriv'e-shaft 29. If the lever is shifted so as to cause the gear. 27 to mesh with the gear 24, the shaft will-be rotated ina clockwise direction, whileif the gear 27 be shifted to mesh withthe gear 28, the-shaft will be rotated in a counterclockwise direction. .The shifting rod 34 -may be yieldably he'ldiin' y'p in which it may be set bya spring detent, indicated; atg37', mounted in the. bottom of the gear casing 22, and arranged to engage in annulargrooves, indicated at 38, in the shaft. j The .driveshaft 29 constitutes the front end of a tumbler shaft which comprises an intermediate coupling rod 39 connectedwith therear end of the shaft 29 by a universal joint as shown at'40, and connected to-the frontend of a worm shaft. 41 by a universal coupling '42. The worm shaft 41 extends into and is rotatably mountedin a gear casing 43- which .1S secured in'-'-any convenient manner-ito the auxiliary frame, and within said casing the shaft carries a worm 44 meshing with a worm gear 45 which is housed wlthin' the'casing 43 and fixed upon a. shaft 46. Said shaft 46 is 49 and meshes with a gear 51secured upon a 1 rock shaft 52whieh is journaled in the beams 14, and extends outwardly from said beams,

the ends of this shaft 52 having crank arms 53 rigidly. secured thereto. -Tolthe outer or free ends'of-the crank arms 53 are pivotally attached; lifting arms or links 54' which extend upwardly I and "rearwardly therefrom and have their upper rear ends pivoted to the upwardly and the motion transmitted through the links 54 to the dumping body so that the body will be tilted into the dumping position indicated by dotted lines in Fig. 1, and when the rotation of the shaft 29 is in the opposite direction, the body will be lowered and returned to the position shown in full lines in Fig. 1. It will also be understood that by properly shifting the hand lever 35, the power-take-oif gearing may be held in neutral position so that the dumping body will be supported in its tilting position until all of its load has been discharged, whereupon said gearing may be set to reverse and then return the dumping body to the load-carrying position. It should be noted at this time that the rockers 16, when in load-carrying position, rest upon the tracks at points in advance of the vertical plane of the rear wheels of the truck and are nearly centrally secured midway the length of the dumping body so that the body is nicely balanced, and the load in the rear portion of the body will aid in carrying the body to the dumping position, and strain upon the hoisting mechanism and the gearing for driving said mechanism will be minimized. In order to enable the rockers to more efficiently support the load to which they are subjected, bracing posts 55 extend between the bottom of the dumping body and the centers of the respective rockers, as shown in Fig. 1.

While the hoisting or dumping movement and the lowering movement of the dumping body may be easily controlled by the manipulation of the hand lever 35, I provide means for automatically stopping the movement at either of its limits so that clashing and consequent damage to the gears will be avoided, and the liability of the mechanism to operate continuously and cause breakage will be eliminated. To accomplish this result, I provide upon the shaft 52, at diametrically opposite points, lugs or projections 56, and below said shaft I pivotally mount upon the supplemental frame a lever 57 the upper end of which is formed into a fork 58 spanning the shaft 52 and provided at its ends upon its inner faces with lugs or projections 59 which may be engaged by the projections 56 on the shaft 52. A shifting rod 60 is pivoted at its front end to the lever 35 and at its rear end fitted through an opening 61 provided in the lower end of the lever 57. Buffer springs 62 may be carried by the rod 60 at opposite sides of the lever 57 and between said lever and adjustable abutments 63 on the shifting rod,

movement of the hand lever 35 and; the springs 62 will permit some play of the lever 57 independent of the hand lever. When the hand lever 35 is in the neutral position, the lever 57 will be held in a vertical position and the projections 59 will be out oft'he paths of the projections 56. WVhen, however, the hand lever is shifted to set the shaft 29- in motion, the rod 60 transmits the movement to the lever 57, which is likewise shifted so that one or the other projection 59 is brought into the path of the projections 56, according to the direction in which the shaft 52 is to rotate. When the shaft 52 has rotated through one-half of a revolution, one projection 56 will be brought against the nearest projection 59 and the motion of the shaft will be automatically arrested inasmuch as the lever 57 will then be rocked by the engagement of the projection 56 with the corresponding projection 59, and the rocking of the lever 57 will be transmitted through the abutments on the shifting rod 60 to shift the hand lever and the gear 27 of the power-takeoff. It will thus be seen that I have provided a very simple mechanism whereby the action of the hoisting mechanism will be automatically arrested when the dumping body has reached the limit of its dumping movement, or when it has been lowered to the load-carrying position.

It is a general practice, at present, to mount the dumping body upon the truck chassis by pivotally connected brackets located at or close to the rear end of the chassis and body, the result being that the load is disposed almost entirely in front of the pivots and considerable power is required to tilt the loaded body. By providing the rockers herein described, I am enabled to shift the pivot point appreciably forward of its usual location while, at the same time, accomplishing the tilting of the body without any bumping contact between the same and the rear end of the chassis. Moreover, the load is so distributed as to be nicely balanced and the tiltingof the body is easily accomplished.

By referring to Fig. 1, it will be noted that, when the body is in carrying position, the cranks 53 extend downwardly and forwardly at an angle of about 45 and that the lifting arms 54 are disposed at the same angle, crossing the shaft 52 and, consequently, be ing on a dead center. The body is thus held down in horizontal position without the use of any hooks, latches or similar fastenings, and accidental tilting of the same cannot occur as the train of gearing, including the worm 44, will not respond to movement unless it is initiated at the power-take-off. When power is applied from the take-off to rotate the shaft 52 for tilting the body, the cranks 53 swing rearwardly and start the tilting movement with a short leverage. As the tilting movement proceeds and the load is raised, the center of gravity shifts rear Wardly and the lifting strain decreases, and during this .transi'tionthe ends of the cranks move rearwardly and upwardly and approach alinement with the lifting arms so that the speed of the tilting action'is increased. In the fully tilted position, the cranks and lifting arms are in alined extended position-and exert the maximum leverage, giving .positive'control of the body, Having thus described the invention, I claim:-- 1 V I 1. In a'dumpi'ng truck comprising a-chassis, and a dumping body mounted for tilting movement on the chassis, the combination of hoisting, mechanism-operatively connected with the dumping body and including a shaft having diametrically opposed projections thereon, means for rotating said shaft,

a powertake-off for driving said means, a

lever pivotally mounted adjacent said shaft and provided at one end with a fork spanning the shaft and provided on its inner surfaces at its'ends with projections to contact with i the projections on the shaft, connections between the opposite end of said lever and the power take-off whereby to arrest the'action of the take-off, and means for shifting said lever whereby to dispose either projection thereof inthe .path of the projections on the shaft. I

2. Ina dumping truck comprising a chassis and a dumping body mounted for tilting movement on the chassis, thecombination of a body'hoistingmechanismincluding a shaft rotatably mounted J on the chassis, projections on said shaft, a lever mounted adjacent said shaft and vprovided at one end with v a forkspanning-the shaft and having pro- 10 jections on its innersurfaces'adaptedtohe I interposed in the path 0f theprojections on the shaft, a shifting rod engaged through the opposite end of said lever and connected with the power take-off, projections on the I rod at opposite sides of the lever, power-takeofli means for rotating the shaft, and means for shifting said rod to simultaneously set the lever and I the power-take-off mechanism'to control the direction 'of rotation of the shaft.

In testimony whereof'I affix my signature. I EPHRIAM 'P, BORDEAUX.

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