US1392448A

US1392448A - Dumping device

Info

Publication number: US1392448A
Application number: US325163A
Authority: US
Inventors: Charles F Randall
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-09-20
Filing date: 1919-09-20
Publication date: 1921-10-04
Anticipated expiration: 1938-10-04

Description

0.. F. RANDALL.

DUMPING DEVICE. APPLICATION FILED SEPT. 0, I9l9.

Patented Oct. 4, 1921.

4 SHEETS-SHEET 1- foul C.F.RANDALL.

DUMPING DEVICE. APPLICATION FILED SEPT. 20, 1919.

Patented Oct. 4, 1921.

4 SHEETS-SHEET 2.

C. F. RANDALL.

oumrme DEVICE.

APPLICATION FILED SEPT-'20; i919. 1,392,448. Patented Oct. 4, 1921.

4 SHEETS-SHEET 3- C. F. RANDALL.

DUMPING DEVICE- nrupmou mp0 SEPT- 20. 1919.

Patented. Oct. 4, 1921.

4 SHEETS-SHEET 4.

UNITED STATES. PATE CHARLES F. RANDALL, or cHIcAGo ILLINOIS.

I f DU MPING DEVICE. I,

Toall whomit may concern. A Be it known thatI, CHARLES F. RANDALL, a citizen of the Dominion of Canada,.residing at Chicago, in the county of Cook and State of Illinois, have invented certain. new

and useful Improvements in Dumping Devices, of which the following is a specification.

This invention vices.

It is particularly applicable to dumping vehicles, such as trucks and the like.

An object of the invention is to provide an improveddumping device.

Another' object is to provide a dumping device which may be readily applied to ordinary vehicles. 7 1

Another object is to provide a dumping device with a body from which material may be readily dumped.

relates to dumping de Another object is to provide a dumping device having a body With a material retaining obstruction Whieh-is automatically removed when the'body is in dumping position. 1

Another object is to provide a dumping device readily adapted for spreading material.

Another object is ;to provide a dumping device having a body also adapted for general service.

Another object is to provide a dumping device which is simple, reliable 'and easily operable.

Other object and advantages will appear from the specification and claims.

An embodimentof the invention, applied to a motor truck, is illustrated in the accompanying drawings, in whichin carrying position. 7

Fig. 2 is a side elevation thereofin dumping position.

Fig; 3 is a section on line 33 of Fig. 1.

Fig. 4 1s a'section on line 44 of Fig. 1'.

Fig. 5 1s a perspective of the underframe, showing the latches for holding the body in carrying and dumping positions,and

inter-connecting angle irons 27 and'28. 'their forward ends irons 14 and 24-are Figure 1 is a side elevation of the device Specification of Letters Patent. P t nted Oct. 4, 1921 Application filed September 20, 1919. Serial No. 325,163. i

' marilysupported in carrying position upon a pairfof forward rollers 6. and .a pair of .Rollers 7 are carriedby a shaft 9 jour- I naled in bearings 10, and rollers 6 are simi ,larly carried by a shaft 11 j ournaled in bearings12. The bearings-for shafts 9 and 11' are mounted upon a frame work which may be secured to some part of the chassis of Supported upon and rigidly secured to' the vehicle, such as the channel bars 13 'found in the ordinary motor truck. The

plates 17 are a pair of racks 20, which extend 'rearwardly: from the front of body 5 when the body is in carrying position. Each rack is engaged by a pinion 21 rigidly secured to a shaft 22; Shaft 22 also has journaled thereto a pair of rollers 23.

The rollers 23 are positioned between the angle irons-14 and a cooperating pair of angle irons 24. Angle irons l4 and 24 are and secured together at their and 26 and At spaced apart rear ends by angle posts 25 spaced apart and secured together by a pair of

angle posts

30 and 31 and interconnecting

angle irons

32 and 33. The horizontal flanges of angle irons 14 and'24 thus-provide a double track for each of the rollers 23 to position shaft 22 and'maintain'p'inions -21 in engagement with rack 20. Shaft 22 is extended at each end beyond the line of the body for the application of a suitable crank 33 for turning the shaftand the pinions carried thereby.

When shaft 22 i turned by the crank the pinions travel along their'respective racks and slide and tilt body to dumping posi-.

tion or carrying position, as will be hereinafter described. 7

A pair of levers 35, one on each side of the body, are each pivotally "carried at one end by shaft 22 and at the other end are secured to some part of body 5 by suitable pivots 36. Levers 35 are'braced'and interconnected by a brace 37 which insures their operating to- I wardly, due to the action of crank 33, racks the forwardmovement of the bodybe limited bythevyokes. As the body is movedrear- 20, pinions 21 and levers 35, the yokes also move rearwardly, the forward vertical walls thereof finally engaging shaft9. The sliding movement of the body is thus arrested. Further rotation of crank 33 thereupon be gins to elevate the forward end of the body, shaft 9 and rollers 7 actino as pivots, as shown in Fig. 2. The body 1s thus first slid rearwardly and then tilted to dumping position. The body is prevented from being thrown or jarred from its proper position by the opposing forces of rollers 7 against the bottom and shaft 9 against yokes 38.

Reverse rotation ofcrank 33 first tilts the body back to its horizontal position and then slides the same forwardly upon rollers7 and 6 to 'the' carrying position shown in Fig. 1.

7 Body 5 is retained in carrying position by a manually released'holding device or latch. This device comprises av catch 40 adapted to engage and hold shaft 22. Catch 40 is carried by a rod 41 which'is journaled in the end posts 30 and 31 and a central bracket 42 carried by angle iron 32. Bracket 42 is bifurcated, as shown in Figs. 3 and 5, catch 40 being located between the bifurcations. Rod-41 has both its ends extending beyond end posts 30 and 31 and bent at right "angles to'form a handle 43 on each side.

Bracket 42 isprovided with a ledge between its bifurcations to engage the under sideo'f catch 40and prevent the same from rotating too far-when shaft 22 is not in a position'to be engaged and heldthereby. .To facilitate the positioning of rod 42 and allow the handles to be formed before assembly, the rodmay be'made in two sections, joined by a suitable coupling 45.

As the body is moved to carrying position, shaft 22 strikes the forward cam surface of catch 40 and raises the catch. When shaft 22 passes the .hook of thecatch, the catch drops back, holding the body in carrying position.

In this condition the body can not slip backward and crank 33 and pinions'21 are locked against rotation. This prevents the accidental displacement of the body from jars or shifting loads or the premature dumping of the same by inadvertent operation of crank 33.

. the bottom of The body of the dumping device is closed at its rear end by a movable tail-gate 50. The tail-gate is provided near its top with a pivot retaining-rod 51. The ends of rod 51 project beyond the body on each side where they are adapted to be held in the position beyond the body, on each side, where they may be engaged and held by pivoted catches 56. Each catch is pivoted to the body by a bracket 57 and has its forward end inclined and provided with an elongated opening 58. lVithin these openings are pins or stud bolts 60 which connect the catches with a' pair of slidable trip bars 61, one on each side of body 5. i

When at the bottom, as shown in Fig. 1, the hooks of catches 56 overlie the ends of rod 54'and the tail-gate is pivotally retained. v J 7 Each trip bar 61 isprovided with a pivotal latch 62, which, when the body is in carrying-.positiom'drops behind a stop 63, attached to the body. The bottom of the tail-gate is thus held closed until automatically tripped the tailgate is in closed position when the body is movedto dumping position,

as will'be hereinafter described.

To insure that catches 56 properly overlie rod-54, to securely lock the bottom of the tail-gate when it returns, upon the return of the bodyto carrying position, each'of the levers 35 is provided with alatch actuating cam 64. Cams 64 are in aposition to be engaged'by outwardly extending projections 65 of the trip bars 61. When the body is tilted from dumping to horizontal position, and upon the forward movement of the body and levers 35 to carrying position, cams 64 and pro ections 65 come into operative engagement and trip bars 61 are moved in a forward direction. The forward movement of-trip bars 61, through the action of pins 60 and inclined slots 58., causes latches .56 to be positively moved about their pivotsto look I ing position over the ends of rod 54.

The bottom tail-gate latches 56 are'operated to release the bottom ofthe tail-gate when the body is tilted to dumping position, by levers 35 acting upon latches 62. The levers first engage the tails of their respective latches and raise the-forward ends of the latches out of engagement with stops 63. This unlocks the tripbars 61 and further movement of the body and :levers '35 acts through thepivots of latches62, to move the trip bars rearwardly. This movement of the trip bars, through the co6peration of pins 60 and inclined slots 58, raise the lockbeing ing ends of catches 56 and the bottom of the tail-gate is released. By automatically releasing the tail-gate only, after the body has been tllted to substantially its full dumping position the weight of the load in the rear of the body is maintained, and this load, back of the pivot about which the body tilts aids in the tilting operation.

In order to facilitate the spreading of the material dumped from the body, position of the tail-gate may be limited to give the proper spread by adjustable stops 70. Stops 70, of which there may be one on each side, are mounted on the rear of the side walls of the body by removable pins 71. When a full opening of the tail board is desired, stops 70 are moved to the full line position shown in-Figs. 1 and 2. If, however, the opening of the tail board is to be limited, stops 70 are moved to the dotted line position of Fig. 2, where they may be engaged by the ends of a bar 72. which is secured to the tail-gate by'straps 55. Theopening of the tail-gate may be limited to the desired amount by inserting pins 71 through the proper openings 7 3 in stops 70.

When the material carried by the body is being dumped, particularly if it is being spread slowly, the load in the forward end of the body may remain, although the load at the rear is considerably-reduced. This unbalance of the load causes considerable back pressure in levers 35, tending to rotate pinions 22 in the reverse direction and allow the body to return to horizontal position. Such premature return movement is prevented by automatically locking the body in its tilted position.

The body is locked in its tilted position by a latch or catch 7 5, which engages and holds shaft 22 in its rearmost position. Hooked catch 75 is secured to a rod 76 which is pivotally carried by a angle cross bar 28. Rod 76 is made in two pieces, held together by a coupling 7 8 and has its outer ends bent at an angle to form handles 79. These handles are within easy reach of the operator from the side of the vehicle. As shaft 22 and its pinion 21 are moved rearwardly to tilt the body to dumping position shaft 22 contacting with the lower cam surface of the hooks of catches 7 5, raises the catches and passes beyond the same. Then the shaft passes beyond the hooks of the catches, the catches drop and the body is locked in tilted position until shaft 22 is released by the raising of catches 75, through the action of the operator turning one of the handles 79. When the catches are raised, the reverse rotation of crank 33 will return the body to carrying position.

hen it desired to use the body for transporting merchandise or materials which cannot or should not be dumped, the tail-gate may be swung outwardly at the top to prothe open bracket 77, secured to the sition 'of Fig. 1. The extent of this movevment is controlled and. the top of the tailgate is held by chains 80, secured at one end to rod 51 and at any other desired point throughout their length by hooks 81, which pass through or between the links to anchor the-chain tothe body.

In order to insure the proper centering of-the body when it'returns from tilted position and to prevent jars or shifting loads from shifting the body from its proper central position the bottom of brace 37'is provided with a pair of centering members 82. These members'have inclined downward projections adapted to engage the upper outer corners of the underf-rame. The inclined surfaces of these projections engaging the corners of the under frame insure the proper centering of the body when it is tilted back to horizontal position and provide oppositely directed wedging actions which firmly retain the body in central position.

Having described my invention, claim is 1. A dumping device having in combination, a body with a pivoted tail-gate, a roller supporting said body, a rack and pinion, a lever connected to the axis of said pinion and pivotally secured to said body what I for sliding and tilting saidbody upon said bination with a pair of rollers connected to opposite ends of a transversely positioned shaft mounted in fixed bearings on the] chassis, near the longitudinal median portion of the body when the latter is on the chassis; another pair of rollers mounted on a similar shaft near the rear portion ofthe body, the ends of the rear shaft extending beyond the rollers; an elongated stirrup fixed to each side of the body inclosing the extended ends of the rear shaft and serving as stops when the body is dumped; a pair of racks fixed to the chassis extending rearwardly from the front end thereof; a pair of pinions, one for each rack; a" transversely extending shaft carrying the pinions; a pair of bars pivotally connecting said shaft to the body; a crank to rotate the pinions and a pair ofbars parallel with the racks to maintain the pinions in mesh with the racks.

3. A dumping wagon having a body and 41 mam-14a a chassis in'combination with two airs of rollers upon which the body normal y rests, one pair being located near the rear end'and on the shaft of which the bed pivots when being dumped; a rack extending rearwardly from the front end of the chassis; a transversely extending shaft connected to the body by a link; a pinion on said shaft meshing with the rack; a handle to rotate the pinion; a guard bar parallel with the rack and spaced above the shaft; an automatically engaging latch mounted on the chassis arranged to hold the front end of the body down and to prevent its rearward movement on the rollers by its engagement with said shaft and another transversely extending shaft to release the latch.

4:. A dumping wagon having a body and a chassis in combination with two pairs of rollers mounted on the chassis upon which the body normally rests, one pair being cated near the rear end and on the shaft of which the body pivots when being dumped;

a pair of racks extending rearwardly from the front end of the chassis and fixed thereto; a transversely extending shaft; a pair of pinions on the shaft in mesh with the respective racks and movable along the racks; a pair of guard bars parallel with the respective racks and spaced above the shaft; a pair of links pivoted to said shaft neareach end thereof and to each side of the body respectively; an automatically operatable latch near the front ends of the racks engaging the pinion shaft to hold the body down and to prevent its rearward movement; another similar latch near the rear ends of the racks automatically to engage said pinion shaft to lock the body in dumped positions, and tansversely extending shafts, one for each latch, to open the respective latch.

In testimony whereof I hereunto subscribe my name.

CHARLES F. RANDALL.