US726989A - Dumping-wagon. - Google Patents

Description

No. 726,989. PATENTED MAY 5, 1903. G. W. ROBERTS. DUMPING WAGON.

APPLIOATION FILED OUT. 17, 1902.

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No. 726,989. PATENTED MAY 5, 1903. v

G. W. ROBERTS.

DUMPING WAGON.

APPLICATION FILED OUT. 17. 1902.

' 4 SHEETS-SHEET 2.

N0 MODEL.

Attorney No. 726,989. PATENTED MAY 5, 1903.

- G. W. ROBERTS. v

DUMPING WAGON.

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PATENT OFFTQE.

GEORGE W. ROBERTS, OF WILMINGTON, DELAIVARE.

DUMPlNG-WAGON.

SPECIFICATION forming part of Letters Patent No. 726,989, dated May 5, 1903.

Application filed October 17, 19 2. Serial No. 127,664. on model.)

To all whom. it may concern:

Be it known that I, GEORGE W. ROBERTS, a citizen of the United States, residing at Wilmington, in the county of Newcastle and State of Delaware, have invented certain new and useful Improvements in Dumping- WVagons, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to an improvement in dumping-wagons, and it is embodied in the construction and arrangement of parts presently to be described, and defined in the claims.

The object of the invention primarily is to provide a dumping-wagon with mechanism or means for so positioning the body or box that the same can be readily turned at right angles to dump the load from the side, as distinguished from that class of Wagons wherein the load is dumped endwise. In structures of this character it is necessary to move the entire load in efiecting the change of the position of the wagon-body, and my present invention is designed largely to facilitate this movement; and as distinguished from other inventions of this character it consists in means normally supporting the" wagon-body in a stationary position and against movement, and which means are withdrawn, transferring the body, with its load, from the stationary supporting means onto suitable rolls or a turn-table. In the prior art it has been suggested to elevate the load by forcing the rollers or turn-table upward until the load rests thereon and is moved bodily upward above the frame. In my invention I contemplate mechanism of the opposite naturethat is, I provide a frame which will normally support the load and which-is normally elevated. The box or body is then filled, and when to be dumped the supporting frame is lowered, lowering the load onto the antifriction-Wheels or turntable, the frame moving beyond a position of contact with the body.

With the above general description of the nature and principle of the invention I shall proceed to describe more in detail the general features of construction.

In the accompanying drawings I have shown an embodiment of the invention; but it is to be distinctly understood that the principles of the invention can be embodied in structures widely diiferentfrom that shown and also that various features of the mechanism can be changed or altered without departing from the nature and principle of the invention.

Figure 1 is a side elevation of a dumpingwagon embodying the invention, showing parts broken away and the elevating means in one position being shown in dotted lines. Fig. 2 is an end view showing the body in its position for dumping. Fig. 3 is a bottom plan view of the body. Fig. 4 is a top plan of the frame, the wheels, axles, and springs being omitted. Figs." 5 and 6 are longitudinal sections showing the supporting-frame in difierent positions. Fig. 7 is a central cross-section showing parts broken away. Fig. Sis a perspective view showing one of the cams and the actuating-handle. Fig. 9 is a perspective view of one of the liftingbars; and Figs. 10 and 11 are detail views of the ends of the lifting-bars, showing their normal position when firstengaging the body and the position after engagement.

The base or frame consists conveniently of two rectangular members A and B, the latter surrounding the former and loosely positioned, so as to be moved up and down. The frame A is mounted on suitable bolsters and springs and constitutes the body of the running-gearofthewagon. Oentrallysupported in the frame A is a turn-table structure comprising transverse cross-bars A and longitudinal bars A with intermediate transverse bars A, which are braced by a center bar A, as shown in Fig. 4. This center bar has a central opening a, which may have'separate side walls or inclined walls, as desired. Mounted on suitable shafts on the four sides 'of the turn-table frame are rollers C, positioned, respectively, between the bars A A and the frame A and bars A These rollers are conveniently inclined or frusto-conical and are in line with the opening a. The structure thus described is rigid with the frame A and is conveniently slightly elevated above the upper face of the frame A, as shown in Figs. 2, 5, and 6.

The movable frame B, fitting around the frame A, is of a vertical width or depth greater than that of the frame A and is provided conveniently at four points along its sides with rocking cams D, D, D and D pivoted on suitable cross-shafts, the former two being pivoted on suitable cross-shafts d d, the latter being pivoted on stub-shafts mounted in the frame B. The cams are duplicated on opposite sides and, as shown, have their larger or more extended portions arranged to come in contact with the upper surfaces or edge of the frame A. These cams are actu-v arm of cam D from whence it extends to .to an arm on the cam D, thence over an idler F and back, connected with the arm of the cam D from whence it is returned to the arm of the cam D The cams on opposite sides of the frame are coupled up in substantially the same manner, and the cams are actuated through a hand-lever G, secured to the outer end of the shaft d at the side of the wagon. By moving the lever G the outer cams will be rotated in opposite directions, while the inner cams are rotated in an opposite direction to that of the adjacent end cams, respectively, so that a perpendicular movement is secured for the frame B when the cams are operated, as distinguished from a compound movement, which would result from the cams movingin thesame direction that is, a movement upward as well as endwise. As the lever G is moved the face of the largerdiameters of the cams are brought into contact with the upper surface of the frame A, thereby lifting the frame B upward, and in this connection it is to be observed that while I have not shown wear-plates on the frame A suitable plates may obviously be placed there. When the frame B is elevated by the cams, the act of elevating is alike on both sides of the frame by virtue of the connecting-shafts dd, so that the entire frame Bis conveniently elevated to a position shown in Fig. 5. In this position, which is substantially the maximum, the lower edge of the frame B will still overlap the frame A. To retain the parts in this position, any suitable clip or catch can be applied to the handle G. I have not shown such a clip, for the reason that the position of the cams will be such as to supportthe load without danger of rotation.

H designates the wagon-body, having on its centertransversesupporting-bars handacentral transverse bar h. .on these barsis mount ed a circular track-plate J, the same being at tached in any convenient manner. This trackplate has a sloping under face, the inclination being opposite that of the wheels 0 and C, so that when in engagement with the wheels the body is largely prevented from getting out of proper position. From the center cross-beam it extends a central pin K, which may be sloping or of conical shape, if desired. This pin fits in the opening a. of the bar A and acts on the pivoted center around which the body moves. The pin may be cast integral with the bar h or otherwise secured in position. The body H is provided with a doorframe L, of a dimension to fit the upper face of the frame B, on which it rests when the frame B is elevated, there being a wide contactin g area between the two members. This raising of the body upon the frame B will generally be sufficient to retain the body in its position, especially in connection with the central pin K. It is, however, obvious that any suitable means may be employed for effecting a rigid connection between the two,

if desired.

M designates a longitudinal shaft mounted in the frame A and a cross-bar A, its inner end having a pinion m thereon meshing with a gear N on the shaft N, mounted in suitable bearings O on the bottom edges of the crosspieces A. The outer ends of the shaft N carry drums P, on which suitable chains Q are wound. These chains are extended transversely and pass over suitable idlers p, mounted in a side bar on the frame A. The ends of the chains Q are clipped to the cross-bar R, located at the side of the wagon, and which cross-bar carries at opposite ends two uprights R, loosely working through clips 0" on the frame B and r on the body H. On the outer end of the shaft M is a crank m, which by turning either winds or unwinds the chains on the drums P to elevate or lower the uprights R, for purposes presently to be stated.

In operation the body of the wagon is positioned on the frame B as shown in Fig. l, in which position the load is filled into the body. When thewagon is to be dumped, the same is driven up parallel with the curb.' The shaft M is then turned, permitting the bar R, with its upright R, to descend to a position shown by dotted lines, Fig. l, carrying the ends of the upright below the plane of the bottom of the body. The lever G, having been actuated to carry the cams into engagement with the frame A to maintain the load on the frame 13, is now actuated to a-reverse position, lowering the frame to the position shown in Fig. 6, allowing the entire load to rest on the turn-table or wheel 0. It will then require but little force or efiort to turn the body around at right angles. This move: ment is facilitated by antifriction-wheels S at the ends of the frame A. To insure of the proper positioning of the body at right angles, a suitable projection is may be employed to lit in the angular spaces between the diagonal plate A and the bars A A On the side of the frame B are secured brackets or IZC bearing-pieces T, While the body is provided with plates U, having cylindrical bearing extensions 20, adapted to fit in the bearings T when the body is tilted, as shown in Fig. 2. hen the body is in its proper crosswise position, the ends of the uprights R will be located directly below the sides of the body, their ends resting in sockets V, Figs. 3, 10, and 11. In these sockets are cross-pins o, and on the ends of the uprights are transverse projections 4' which normally, when the body is in a horizontal position, are beyond the pin 0. In this position the crank m is turned, elevating the uprights R, which in turn carry the body upward to the position shown in Fig. 2. In that position the hooked ends of the bars R will be over the pin o and pre vent any tendency of the body to overtilt or tip. The operator may then look the crank m and the shaft M in position by any convenient means, such as a pivoted dog located at any convenient point on the frame A, as at W. The load is then discharged through the tail-gate, after which the body is lowered, readjusted, the frame B elevated, and the uprights R carried back into the position shown in Fig. 1.

In addition to the above-described features of the invention it may be found necessary to lock the body on the frame, which can conveniently be accomplished by having the heel of the cams D. D enter recesses X in the under frame of the body, as shown in Fig. 5. It is of course to be understood that in lowering the frame B provision will be made to permit the edge of the same to pass belowthe protruding end of the shaft M. This will be done by cutting out a small portion of the end bar of the frame. It is also'desirable that in elevating the uprights R they be properly guided, and with this in view suitable guide-yokes It are secured directly below the clips 1'.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is-

l. In a dumping-wagon, the combination with afixed frame, of a movable frame, a body loosely supported by and carried on the movable frame, antifriction devices carried by the fixed frame, and means for changing the relative position between the movable frame and the fixed frame bringing the body into contact with the antifriction devices.

2. In a dumping-wagon, the combination with a fixed frame carrying a turn-table device, of a movable frame surrounding the fixed frame, means for elevating and lowering the movable frame, and a body loosely supported by and carried by the movable frame when the latter is in its elevated position.

3. In a dumping-wagon, the combination with a fixed frame, of a body pivotally supported,antifriction means interposed between the body and frame, an interposed frame movable relative to the fixed frame and independent ofthe body for positioning the body out of contact with the antifriction devices, and means for moving the movable frame vertically.

4.. In a dumping-wagon, the combination with a fixed frame, of a body pivotally supported,antifriction means interposed between the body and frame, an interposed frame movable relative to the fixed frame for positioning the body out of contact with the antifriction devices, and cams for moving the movable frame vertically.

5. In a dumping-wagon, the combination with a fixed frame, of a body pivotally supported,antifriction means interposed between the body and frame, an interposed frame movable relative to the fixed frame for positioning the body out of contact with the antifriction devices, and oppositely movable cams for moving the movable-frame vertically. 6. In a dumping-wagon, the combination with a main frame, of a surrounding movable frame, a body, a turn-table, means for moving the movable frame and the body upward until the body is out of contact with the turntable, a series of cams on one of the frames, actuating mechanism for actuating the cams simultaneously to elevate and lower the movable frame and means for tilting the body, substantially as described.

7. In a dumping-wagon, the combination with a fixed frame and a body, of a series of inclined rollers on the frame, an inclined track on the body, a central pin, and means for positioning the track and rollers out of contact.

8. In a dumping-wagon, the combination with a fixed frame, of a movable frame surrounding the same, a body, antifriction devices below the body, cams for elevating the movable frame,means for actuating the cams, and a connection between the cams and the body for preventing movement of the body on the movable frame.

9. In a dumping-wagon, the combination with a frame, a turn-table and a body, of means for elevating the body out of contact with the turn-table, a device for tilting the body comprising a standard at the side of the frame having a sliding detached connection with the body, and mechanism for raising and lowering the standard. I

10. In a dumping-wagon, the combination with a body movable across the Wagon, of means for tilting the body comprising a movable standard having a sliding and detached connection with the body, a rotatable drum, and a flexible connection between the drum and the standard.

11. In a dumping-wagon, the combination of a frame, of a body adapted to be moved transversely across the frame, brackets on the side of the frame, projections on the body engaging the brackets, means on the opposite side of the frame for tilting the body,

engaged during the movement of the body, 10 substantially as described.

In testimony whereof I aftix my signature in presence of two witnesses.

GEORGE XV. ROBERTS.

Witnesses:

FRANCIS S. BRADLEY, HENRY O. CONRAD.

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