US870929A - Dumping-wagon. - Google Patents

Description

No. 870,929. PATENTED NOV. 12,1907. A. GAMERON.

DUMPING WAGON.

APPLICATION FILED 33.18, 1907.

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No. 870,929. PATENTED NOV. 12, 1907.

A. CAMERON.

DUMPING WAGON.

APPLICATION FILED T11R18, 1907.

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ARTHUR CAMERON, OF JACKSON, MICHIGAN.

DUMPING-WAGON.

Specification of Letters Patent.

Patented Nov. 12, 1907.

Application filed February 18.1907. Serial No. 357.990.

To all whom it may concern:

Be it known that I, ARTHUR CAMERON, a citizen of the United States, residing at Jackson, in the county of Jackson and State of Michigan, have invented certain new and useful Improvements in Dumping-Wagons, of which the following is a specification.

My invention relates to dumping wagons of the class in which the body portion comprises a load receptacle having doors under control of the driver for dumping and closing movements, and more particularly to dumping wagons of such class in which the doors swing downwardly and outwardly during the first portion of the dumping action, and then swing laterally outward and move bodily upward during the second or concluding portion of such dumping action.

My invention comprises the following several matters of improvements, to wit:

1. The doors are brought into closed position by closing chains under control of the driver. The downward and outward swing of the doors in dumping a load is checked by comparatively short hanger chains or equivalent cable portions or links at a moment suitable for compelling the doors to rise while continuing to swing outwardly, these flexible hangers being connected with the doors and suspended from the body above the doors and independently of the door closing chains or cables.

'2. The door closing chains or cables are connected with the doors outside of the load receptacle and are arranged so that when drawn to close the doors they can be tightened up so as to draw and hold together the inner meeting edges of the doors, and when thus held the hanger chains or cables will be slack or relieved from strain, while on the other hand at the movement for checking the downward and outward swing of the doors and compelling them to rise while continuing. to swing outwardly, the hanger chains will become taut and subject to strain, while the door closing chains or cables will be slack or relieved from strain.

3. The two closing chain portions opposite each end of the box or load receptacle relatively cross and have their lower terminals attached to the ends of the doors by cable portions which also connect with the lower ends of the hanger chains at points above the doors.

4. Portions of these door closing chains extend along opposite sides of the body and forward to a winding device, the pair of crossing door closing chain or cable portions being extended from the door ends to and uniting with said cable portions alongside the wagon body.

5. The outer marginal portions of the doors are hung on swinging, slotted links having shifting pivotal connections with the body and having during act-ion comclosing chains permits the hanger chains to hold up and prevent the door closing chains from dragging on the ground during the dumping action and particularly during the concluding portion thereof.

In the accompanying drawings: Figure 1 is a side elevation of a dumping wagon embodying my improvements, the bottom sections or doors being closed. Fig. 2 is a rear end elevation of the body portion of the wagon, the bottom doors being closed. Fig. 3 is a side elevation of the body portion of the wagon, the bottom doors being closed. Fig. 4 is a like side elevation of the body portion of the wagon with the doors open and raised to some extent outside of the box or body, one of said doors being shown in such raised condition. In Figs. 3 and 4, the forward end portions of the box or body sides are broken away for convenience of illustration. Fig. 5 is a front end elevation of the box portion of the wagon, the same being produced by a transverse section on a plane indicated by x-w in Fig. 1, itbeing observed that Fig. 1 is on a smaller scale than all of the other figures. In Fig. 5 the doors are raised outside of the body as in Fig. 4. Fig. 6 is a front end elevation similar to Fig. 5, but showing the bottom doors in position intermediate or substantially midway 01 their position shown in Fig. 5," and their closed position shown. Fig. 7 is a perspective View of one of the links.

A indicates the body constructed with an ordinary box or receptacle for receiving and containing a load. The body is mounted upon front and rear wheels in any suitable or desired way, and it is understood to be provided at its forward portion with a transversely arranged winding drum or shaft and with any ordinary or suitable means for turning the drum in a direction to wind a chain or chains thereon, and [or causing or permitting the drum or shaft to revolve in an opposite direction so as to permit the chain or chains to pay out, and as these winding shafts or drums for winding up and paying out chains or cables are exceedingly old and common in (lumping wagons, it is only necessary to indicate in end view a reversible rotary shalt B, under stood to be provided at each end with a winding drum portion or winding pulley secured thereon, one of such winding devices C being shown in Fig. 1. The open bottom of the box portion of the body is closed by hinged doors D, which are arranged to swing open for dumping the load. Each door D is provided on its underside with a pair of suitably strong metal straps or plates E, which are secured to the underside of the door and formed with upwardly bent portions 1, arranged opposite the outer edges of the door. At each side of the box two longitudinally slotted links F are respectively hinge-connected with one and the other of two of these ends of the hinge straps E the connections between the links F and the upturned ends of the hinged straps being any suitable articulated or hinge connections. When the door is closed, the two links F at either side of the box converge upwardly and at or about their points of meeting have their inner ends connected with a pivot G which is fixed upon the side of the wagon body and arranged to extend through longitudinal slots 2, in the relatively adjacent end portions of the two links, this arrangement being present at each side of the wagon. When each door is raised alongside the box as in Fig. 4, these links have a combined swinging end movement, that is to saytheir outer ends which connect with the hinge straps swing upwardly and at the same time said links move longitudinally toward each other upon the pivot or pivotal support G. The links F thus arranged in two pairs respectively at opposite sides of the body portion of the wagon are prevented from laterally outward displacement by means of straps or keepers 3, each having the major portion of its length set out from a vertical side of the wagon body so as to leave room for a swinging link F, the end portions of the strap being bent inwardly and secured to the wagon body, or if desired the lower ends of these straps or keepers can be bolted to oblong plates or stout straps t which are in turn secured to the wagon body.

The upper ends of the straps 3 are shown bent inwardly in Figs. 3 and 4, while their lower ends are shown unbent, and in such case in order to provide a desirable stop for limiting the downward swing of the outer ends of the links F, stops are provided by securing comparatively small blocks or plates between the lower ends of the straps 3 and the lower ends of the plates or straps 4, two of such blocks or stops 5 being best shown in Figs. 5 and 6, in the former of which the outer ends of the links F have been swung up to a considerable extent above these stops, while in Fig. 6 the outer ends of the links are at the limit of their downward movement by reason of the stops.

From the foregoing it will be seen that when the doors are closed as in Figs. 1 and 2, the outer ends of the links will be at the limit of their downward swing. At and outside of each end of the box body portion of the wagon is a pair of hanger chains H, H, attache d at their upper ends to the body or box, the two chains of each pair of said hanger chains being respectively attached at opposite sides of the body of the wagon, as indicated in several of the figures. These hanger chains are of such length that when the doors are partially opened so as to converge downwardly as or substantially as in Fig. 6, the hanger chains H and H become taut and will not permit the doors to further open unless the links F to which the doors are attached swing upwardly about the axis of pivots G. If therefore the bottom doors of the wagon in a loaded condition are released from their closed position shown in Figs. 1 and 2, the weight of the load upon the doors will cause them first to swing downwardly until they are partially open substantially as in Fig. 6, and then cause such doors to rise along the opposite sides of the wagon body substantially as in Fig. 5, the extent to which the doors thus rise being proportional to their acquired momentum due to the weight of the load. During the further opening of the doors from the position shown in Fig. 6, these comparatively short hanger chains H and H will of course bind against thehrnderside of the body sides which extend somewhat beyond each end of the box, it being observed however that as soon as the weight of the load tially from the position in Fig. 6, the doors will begin to rise owing to the short hanger chains or cables or links H and H: After the load has been dumped, the links F will swing down so as to lower the doors and permit the latter to swing downwardly and inwardly toward what may be termed their natural open position illustrated by Fig. 6.

In order to raise and close the doors, I provide two door closing chains 'or cables K, K, and 1 R opposite and outside of the ends of the box. The chains or cables K and R at the rear end of the box pass over sheaves 6 and 7, respectively, said sheaves being mounted upon the rear end of the box substantially as in Fig 2, and elevated relatively to the points at which the upper ends of the hanger chains H and H are attached to the box. The chains or cables K and 1\ are trained over these sheaves 6 and 7 respectively and extend downwardly along lines which converge to a point above the level of the closed doors, and then cross and diverge outwardly until they meet the door ends to which they are attached, in which way a cable n extending from one side of the box will cross cable 1& attached to a door at the opposite side of the box, and in similar manner the cable K extending from another side of the box will extend downwardly and cross the cable K so that it can be secured to a door at an opposite side of the box. The doors closing cables K and K opposite the forward end of the box are arranged in the same way as their companion cables R and K are arranged opposite the rear end of the box, the door raising cables opposite the forward end of the box being respectively trained over sheaves 6 and 7 which correspond to the sheaves 6 and 7 on the rear end of the box. It will be seen that when the cables are drawn upwardly and over their respective supporting sheaves 6 and '7, each cable willexert an oblique pull upon the door substantially in a direction toward the longitudinal middle of the box, and in this way the meeting inner edges of the closed doors will be drawn and held closely together when the door raising cables are operated for such purpose. These four door closing cables are all extended forward so as to connect with and thereby be wound upon and unwound from the winding drum portions on the rotary reversible winding shaft 13, it being understood that this winding device also comprises any known and suitable means for operating the winding device so as to wind up the door raising cables or cause or permit them to pay out as occasion may require, and also to temporarily lock the winding device against rotation when the doors are to be held closed, it being also well known that in dumping wagons it has been common to release the winding device when it is desired to allow the door .closing cables to pay out and thereby permit the weight of the load to swing open the pair of bottom hinged bottom doors.

As a specific arrangement shown the door closing chains or cables K and K at the rear end of the box rrspectively pass over the sheaves 6 and 7, and thence rcspectively pass about sheaves 8 and 9 which are mounted upon opposite sides of the box or body, and from these sheaves 8 and 9, the said door closing eables K and K extend forward and connect with the winding device, the forward extension portion of the causes the doors to swing further outwardly substandoor raising cable K being shown in Fig. 1 along side the body, and it is understood that the door raising cable K has a like forward extension alongside the opposite side of the body and extending forwardly to and connecting with the winding device. With reference to the door raising cables at the forward end of the box, said cables K and K extend laterally outward from the sheaves 6" and 7 and respectively pass about sheaves 10 and 11 which are mounted respectivelyupon opposite sides of the body similar to the rear cable guiding sheaves 8 and 9. The forward door raising cables K and K after passing about the sheaves 10 and 11 as illustrated in Figs. 5 and G extend inwardly so as to connectwith the long portions of the door closing chains which extend along opposite sides of the wagon, it being noticed that Fig. 1 shows the forward portion of the door raising cable K connected with the forward portion of the door raising cable K at a point forward of the sheave 10, and it is understood that at the opposite side of the wagon the cable K extends forward from the sheave 11 and connects with the forward portion of the door raising cable K such arrangement being an ordinary method'of connecting fore and aft door raising cables with a reversible winding device upon the forward end portion of the wagon.

The points of connection between the hanger cables and the door raising cables are made at points sufficiently abovethe doors so as to leave short cable portions between the doors and said points as or substantially as illustrated. When the doors of the unloaded wagon are permitted to open by gravity by unwinding the door raising cables or permitting them to pay out from the Winding device, the doors will drop until they assume the position or substantially the position illustrated in Fig. 6, in which it will be seen that the forward hanger chains are taut'and in straight lines, it being understood that the rear hanger chains will assume like positions. In Fig. (3 therefore the hanger chains have the appearance of single chains attached at their upper ends to the box or body and at their lower ends attached to plates 12 which are rigidly secured to the undersides of the doors and which project outwardly from the ends of the doors so as to provide connecting bearings to which eyes or links on the ends of the hanger chains or cables are attached. when the doors are in the position illustrated in Fig. 6 the door closing chains appear to be attached to the hanger chains at points above the doors, the hanger chains being .taut and subject to strain, while the hanger chains are not subject to such strain and are free to pay out should the doors be swung further outwardly and thereby be caused to rise by reason of the taut hanger chains.

When the doors are raised substantially as in Fig. 5 or while they are being raised from the position shown in Fig. 6 to the position shown in Fig. 5, the door raising chains will not be subject to strain and will sag substantially as illustrated, it being understood that While the door is swinging from a closed position as in Figs. 1 and 2 to the open elevated position illustrated in Fig. 5, the door closing cables K, K, K and K simultaneously and freely pay out from the winding device, whereby the doors will be operated by the weight of the load. After the doors have been opened and raised by the dumping action of the load, they Also i will drop down into the position illustrated by Fig. 6 after the load has been dumped, but if desired, the doors can be held in the position illustrated by Fig. 5, if the driver on the forward end of the wagon or any other attendant operates the winding device so as to wind up the door closing cables 'and render them taut before the doors have dropped too far down from their position illustrated by Fig. 5. It will be observed, however, that the dumping action of the wagon involving the outward swing of the doors and also their upward movement permits the load which is being dumped or discharged to spread and thereby materially reduce the height of the spoil pile, and for this reason the wagon may be made comparatively low down. It will also be understood that the momentum acquired by the doors assists in raising them to or near the position shown in Fig. 5 and that if the spread of the spoil pile temporarily prevents the doors from again dropping into the position shown in 'Fig. 6, as it will be apt to do, the doors will simply trail along the sides of the spoil or dump pile until after the wagon has been drawn beyond the same. It will also be observed that none of the chains or cables enter the box or receptacle for receiving the load, and that by my arrangement the doors are controlled by hanger chains outside of such receptacle.

As hereinbefore observed Fig. 6 gives the appearance of hanger chains in straight lines between and connecting the doors with points on the wagon body, the door raising chains being connected with the hanger chains little above the doors, for in this illustration the hanger chains are taut while the door raising chains are slack. But in Fig. 2 where the doors are tightly closed the hanger chains are slack while the door raising chains are taut, whereby the portions of the door raising chains between the sheaves 6 and 7 and the doors are in straight crossing lines, and it now appears as though the hanger chains are attached to the door raising chains at points above the door. From this explanation it will be seen that the particular form of connection between the cable chains and hanger chains is immaterial. As illustrated by Fig. 6, the lower portions of the hanger chains between the doors and their connection with the hanger chains are in service as lower end portions in the hanger chains, while in Fig. 2, for example, these lower portions of the hanger chains are now substantially lower end portions of the door closing chains, such portions being extended be tween the doors and the points of connection between the door closing chains and the hanger chains. It will be obvious that when the door closing chains are drawn up by the winding device from the position shown in Fig. 6, they will exert lateral pull on the hanger chains and thereby bend the latter until the lower parts of the hanger chains become practically taut portions of the door' closing chains as in Fig. 2, while the upper portions of the hanger chains will sag or be relieved from tension.

The connection of the lower end portions of the door closing chains with the hanger -chains substantially as illustrated in Figs. 5 and (5, does not effect the function of the hanger chains as means for checking the down swing of the bottom doors at a proper time and for then compelling the doors to move upwardly or rise during their further outward swing. But by attaehing the door closing chains to the hanger chains,

the latter will hold up the sagging portions of the door closing chains when the doors are moving from their position shown in Fig. 6 to their position shown in Fig. 5, and thereby prevent such hanger chain portions from dragging on or in'the spoil pile or dump.

What I claim as my invention is:

1. In a dumping wagon, the combination with the body comprising a load receptacle and a swinging bottom door therefor, of means connecting the door with the body and permitting the door to swing downwardly and outwardly and also to rise alongside the body; hanger-chains or cables suspended outside the load receptacle from points above the bottom level thereof and flexibly attached to end portions of the door, these hanger cables being slack when the bottom doors are closed and of a length for compelling" the door while being opened as by a load in dumping to rise outside the body during the concluding portion of its opening action; and means for closing the door and for permitting it to open at will.

2. In a dumping wagon, the combination with the body comprising a load receptacle and swinging bottom doors therefor, of means connecting; the doors with the body and permitting the doors to swing downwardly and out wardly and also to rise alongside the body; hanger-chains or cables suspended outside the load receptacle from points above the bottom level thereof and flexibly attached to end portions of the doors, these hanger cables being slack when the bottom doors are closed and of a length for compelling the doors while being opened as by a load in dumping to rise outside the body during the concluding portion of its opening action; and means for closing the doors and for permitting them to open at will.

3. In a dumping wagon, the combination with the body comprising a receptacle for having swinging bottom doors, of means connecting the doors with the body and permitting them to have a combined laterally outward swing and also a bodily upward movement during the concluding portion of their said opening movement; suspended hanger-chains or cables secured upon the wagon at points above the closed bottom level of the load receptacle and flexibly attached to the doors below their said points of suspension, the chains for said doors being outside of the load receptacle and respectively opposite the front and back ends thereof, said hanger-chains or cables beingalso of a length to hang slack when the doors are closed and to compel the doors while being opened as by a load in dumping, to rise outside the body during the aforesaid concluding portion of their opening movement; and door closing chains or cables connected with the doors and extended forward to and connected with suitable reversible winding and unwinding means.

4. In a dumping wagon, the combination of the body comprising a load receptacle having swinging bottom er ses doors, of means connecting the swinging doors with the b dy and permitting the doors to have a lateral swing and also to rise alongside the body; suspended hangerchains attached to the doors for compelling them to rise during the concluding portion of their laterally outward swing; door closing chains or cables also connected with the doors; and means for operating the door closing chains or cables, the said door closing chains or cables having relatively crossed portions forward and in rear of the load receptacle and united with the hanger chains or cables at points above the doors 5. In a dumping wagon, the combination with the body comprising a load receptacle having a swinging bottom door, of a connection between the door and body consisting of links supported for combined swing and end movement alongside the body and articulated connections between the links and the outer edge portion of the door.

6. In a dumping wagon, the combination with the body comprising a load receptacle, and a swinging bottom door therefor, of connection between the outer edge portion of the bottom door and the body and consisting of a pair of links hung to swing about the axis of a pivot pin on a side of the body and having longitudinal slots receiving such pivot pin whereby the links are also capable of end movement; and jointed connections between the outer ends of the links and the outer edge portions of the bottom doo1's.

7. In a dumping wagon, the combination with the body comprising a load receptacle, and a swinging bottom door therefor, of a link movement alongside the body and comprising links arranged for swinging and end movements on a plane parallel with the side of the body, suspended hanger-chains or cables attached to the wagon body and depending toward and attached to the door ends outside the ends of the load receptacle. and means for closing the door.

8. In a dumping wagon, the combination with the body comprising a load receptacle and swinging bottom doors therefor, of means for hinging the doors; door closing chains extending along opposite sides of the wagon, each chain along one side of the wagon being connected with a bottom door toward the opposite side thereof whereby the chains relatively cross at each end of the box 01' load receiving reeeptable; a pair of hanger chains at each end of the load receptacle and attached to the wagon at points above the bottom doors, the pair of hanger chains at each end of the load receiving receptacle being arranged to converge toward the two crossing door closing chains at such end, and to respectively connect with one and the other of said door closing chains above the level of the doors when the latter are closed.

. ARTHUR CAMERON.

Witnesses EMIL J. MUELLER, LEE A. HALLEY.

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