US2494171A - Self-loading truck - Google Patents

Description

Jane 10, 1950' J. F. GOODMAN SELF-LOADING TRUCK 5 Shee'ts-Sheet 1 Filed June 28. 1946 ELQMMJ mil!" INVENTOR. JOSEPH E GOODMAN Ma WSQ: W

ATTORNEYS.

Jan. 10, 1950 J. F. GQQDMAN 2,494,171

SELF LOADING TRUCK Filed. June 28, @946 5 Sheets-Sheet 2 INVENTORF JOSEPH E GOODMAN ATTORNEYS.

Jan. 10, 1950 J. F. GOODMAN I 7 SELF-LOADING TRUCK Filed June 28, 1946 5 Sheets-Sheet 3 INVENTOR. JOSEPH F: GOODMAN ATTORNEYS.

Jan. 10, 1950 J. F. GOODMAN 2,494,171

SELF-LOADING TRUCK Filed June 28, 1946 5 Sheets-Sheet 4 INVENTOR.

JOSEPH EGOODMAN ATTORNEYS.

J. F. GOODMAN SELF-LOADING TRUCK 5 Sheets-Sheet 5 Filed June 28. 1946 INVENTOR. JOSEPH l-'. GOODMAN ATTORNEYS.

Patented Jan. 10, 1950 Y 1 siamosr ormiqn V .IosephErGoodmamINew York, N. Ya, assignouto. Automatic; Truck Loa r Gornonoticn; N

:' Ya aemv ne allelawars Apu icatioplucs281. Serial q-fifi fi l 9 claims; (01. s r-r61) veyors adapted to convey material to the body 'ofgthe truck and'to the constructionotsuch conveyo-rs. The conveyor ispreferably attachedto the rear end of a dump truck. Trucks; of this character are adapted for handling anyloo'se materials such as earth, sand, gravel and theli-ke-,'but-- are particularlyuseful for collecting refuse in. cities, including ashes, cinders'and refuse of all and many trucks of this general type are nowings'o used.

' The objects of this invention are:

(a) To provide a truck of the haracter described in which the capacity of the body may be utilized more fully by so constructing the'conveyor that it occupies a minimum or space within the body;

(b) To provide a conveyor assembly of novel construction with improved means for eliminating the jamming of'the conveyor when its blades or flights meet with obstructions in the form of bulky objects or the like;

To provide a conveyor which is entirely devoid of driving'shafts-or'other obstacles inthe path of the material being loaded so as to elim-tnate difiiculties dueto the wrapping around such shafts and the catchingon obstacles of-such items of refuse as wires, ragsand the'l'ike;"

' (d) To provide a unitary conveyor assembly of simplified construction which is substantiallyselfcontained and therefore readily adaptable for attachment to dumptruck bodies without substantial alteration of the body structure and without requiring special bodies;

. -(;e) To provide a conveyor driving system which isoperative in any position of the truck body relatiy e to its chassis, permitting the conveyor tobe run while the body-.isbeing elevated as well as when it is in dumping position;

(1) To provide novel means for adjusting the length of the track carrying the endless chains forming a part of the conveyor; and

2;.-...-2 .of;Fig-. 1, looking upward through the central portionofthe conveyor and conveyor housing;

3: is a. rear elevation of the truck partly'in section. and partly broken away, taken for themostpar-t on the line 3-:-3: of Fig. 1, some parts beingomitted;

Fig. 4.: is a perspective detail on a larger scale, partly in section, showing the pivotal connection between the. body of the truckand various parts o-.the-. conveyor housing, showing part of the meansfor-eleyating the conveyor when'thev truck iseumped and part of the means for driving the conveyor; f

Fig. 5.: is, a side; elevation of the truck with the body and the conveyor in their normal positions;

Fig. 6 is a viewsimilar to Fig. bu-t showing: the truck body-in dumping position with the conveyor elevatedtoopen the. rear ordischarge. end of the body;-

Fig. 7 is. a. detail of the pivot between the body. anctthe chassis ofthe truck, showing-the mountingo the. power shaft. for driving the conveyor;

Eig-. 8; is an elevation of the upper end. ofthe con ey r ch in uide member;

Eig. 9 is a sectional elevation taken on the line of Fig. 8v and including an adjacent portion 2f: he tr ck. bo y;

Ijig, 10 is; an expanded perspective view illus- Eating the relationship of some of the parts in F e 4.;

- 1-1 is a perspective detail of the lower end or-one. of-the conveyor guide members, illustratingmeans for adjusting the length of the track for the conveyo cha n;

12is a perspective, view of the loading hop- 1 .6

Eig. 131s a side elevation of a modified form of the invention in which the conveyor assembly is QiJ Qttdto e truck-b d at its top;

Big. 14, 15 a partial rear elevation on the line 1.4% of: F 13; and

(g) To provide improved means for elevating th o v or assembly away from thedischarge end of; the truck body'as it is elevated into dumping osition.

Other objects and advantages-willin part appear and in part be obvious from .the following detailed description of the present preferred em-l bodiment I or the invention taken in. conjunction Wi hedrawi n hic -1 Y Fi 1 is asc ti nal. levat on throu h the V rear portion o a elfo din ump uck;

Fig. '2 is a condensed'sectipn taken on the line ing ztisecured to the chassisframe '20 and a bear- I '15,..shows the structure of Fig. 13 in dumpns-position.

Referring. to Figs. 1, 3, 5 and 6, the invention is shown as embodied in a dump truck having" the usual chassis frame with automotive drive; including a transmission 2 l I Pivotally mounted on the frame 20 is an enclosed body 22 supported on longitudinal beams 24 and cross bearn'sZ S." This body may have a door 23 in its side, asis usual,

for manual loading and inspection or the'interior ofthe body.

mtin'e t Fi t e ivota connect on be: tween thechassis and the body comprises ab'ear;

ing 28 secured to the body supporting beam 24. Extending through the bearings 26 and 28 is a bushing 29. It will be understood that two such pivotal connections are provided, one on each side of the chassis. Through the bushings 29 extends a rotatable shaft 38 which extends a short distance beyond the sides of the body 22 and car-- ries at each end a sprocket 3|. It will thus bewhich may drive, through shaft 32 and universal I joint 34, an auxiliary reversible transmission 35 having a control shaft 36 and secured in any suitable manner (not shown) to the chassis frame. Shaft 36 extends through the chassis frame to a point beyond the body for connection to a lever 38 and operating rod 39 (Figs. 5 and 6). The rod 38 extends rearwardly to a convenient position where it may be operated by a man standing beside'the rear of the truck. The end of the rod 39 may be: bent to form a handle 48 and the supported by a bracket 4| attached to some fixed part such as chassis frame 20.

The transmission 35, which is controlled by rod 39, contains reversing gears so that by moving said rod the transmission may be caused to drive its output shaft 44 in either direction, and in neutral position the shaft 44 will remain stationary. The shaft 44 drives a direction-changing gear contained in the housing 45 (Fig. 3) which gear drives the transverse shaft which passes through the body pivots as above described. The transmission is preferably of known type wherein the driving connections are made through clutches adapted to release on overload. 5

7 At the rear end of the truck body 22, as generally indicated at 46, is a combined tail gate and conveyor housing which serves, in its normal position, as a closure for the discharge end of the body. At the bottom of this housing is a loading hopper 48 provided with a hinged cover 49 having an opening 56 through which the material to be loaded into the truck can be dumped. In' -the case of articles too large to go through the opening 58 the cover may be raised as shown in dotted lines in Fig. 12. This housing 46, as may best be seen in Fig. 3, is preferably nearly as wide as the truck body 22.

Referring to Figs. 1, 2 and 3,. an endless conveyor travels within the housing 46, moving, during loading of the truck, in the direction shown by the' arrows in Fig. 1. This conveyor comprises a pair of roller chains 5! to which are attached at intervals brackets 52 carrying horizontal blades or flights 54. The conveyor extends from the loading hopper upwardly through the housing 46 and turns in a short loop just inside of the upper rear end of the truck body, thus leaving practically the entire space within the body available for the deposit of material.

Referring to Fig. 2, the particular construction of the housing 46, which is a feature of the invention, will now be described. The rear end of the body is provided with outwardly extending flanges 55 against which rests the tail gate 56 which forms the under side of the housing 46 and joins or is integral at its lower end with the loading hopper 48. In their upward travel the flights 54 carry material from hopper 48 upwardly along the sloping surface of the tail gate 56. So that the marod' is slidably terial need not be carried any higher than is necessary by the conveyor, the central portion of this tail gate terminates about midway between the top and bottom of the body at the point 58 (Fig. 1) so that when the body is empty or only partially filled, material may be deposited into the body directly over this upper edge of the tail gate.

:The two outer sides of the housing 46 consist of upstanding side walls 59 and 60 which are at tached to the tail gate 56, as by welding, whereby the underside of the housing 46 is in the form of awide trough, of which the tail gate 56 forms the bottom and the walls 59 and 60 form the sides. Extending across the top of this trough and normally resting on the upper edges of the side walls 59 and 68 is a cover plate 6| attached to whichare the two depending side plates 64 and 65, which carry the tracks for the conveyor chains 5|. These conveyor chain tracks, as may best be seen from Figs. 2, 8, 9 and ll, are in the form of channels 66, the upper edges of which are integral with or joined to webs 68, which extend between the more or less parallel channels, and webs 68 which extend outwardly from the channels. The upper webs 69 may be welded to cover 6! and the lower webs 69 are turned outwardly at right angles and welded to the plates 64 and 65. This track construction may conveniently be made by forming and welding together suitable shapes of sheet metal which are in turn welded to their supporting members to form a rigid structure. The flights 54 of the conveyor, at their outer ends where they are attached to the brackets 52, are flush with the flat surfaces of the webs 68 and 69 so that the inside of the conveyor housing is smooth, except for the channels occupied by the chains 5|, and without obstructions or spaces upon or in which materials can become lodged. From the foregoing description it Will be seen that the housing 46 comprises two main parts which fit within one another. The first main part consists of the tail gate 56 and the walls 59 and 60 and the second main part consists of the cover plate 61 and the walls 64 and 65. These two main parts are movable relative to each other and to the'body of the truck and are pivotally mounted thereon in a manner which will now be described with reference particularly to Figs. 4 and 10, showing the mounting at one side, it being understood that it is duplicated on the opposite side but in reverse.

Mounted on the flange of the body 22 is a two-piece journal box or pillow block comprising a lower half 10 and an upper half ll bolted together and to the body and lined with any suitable bearing metal 12, preferably split for assembly in the usual way. Rotatably mounted in the latter bearing is a housing-elevating member in the form of an ofiset bell-crank consisting of the outer arm 14 and the inner arm 75 joined together by the hub 16, the latter having a longitudinal bore serving as a bearing for a stub shaft 18 which rotates therein. On the inner end of shaft 18 is a sprocket 19 adapted to drive the conveyor roller chain 5! and on the outer end of the shaft is a sprocket 80 adapted to be driven by a chain 8! which passes downwardly and around the sprocket 3| afiixed to the end of the shaft 30. The inner arm 75 is attached as by rivets 82 to the side wall which also contains an aperture alined with the bore of hub 16 to permit passage of the shaft 18. The side plate contains an alined aperture in which is mounted a flanged bushing 84 which is rotatably mounted on shaft 1 18 inwardly of the side wall60.

For elevating housing 40 .the tcuter "end: of vth arm- H is attached'to a (Cable .05 which passes downwardly (Figs. 5 and 6;) unde'r a. first roller 85" and over a second roller .88,"both of? which rollers are attached to thesupporting frame of the body, and thence to an anchoragetu affixed tothe chassis frame 20. For'adju'sting the length of cable 85' a turnbuckle =90may be provided. Aswill beseen from comparison ofFigszfi and '6, the arm Iv-4 will be drawn down by thecable 85- when the truck body is elevated into dumping position and the inner arm attached to the wall 00, together with corresponding parts on the opposite side of the body, will lift up the lower half of thehousing 46 which'will carry with itthe upper half inwhi'ch the conveyor" is mounted. When-desired,.as in making adjustments" or for inspection, theupper half of the housing 46 may be manually lifted out of the lower half which remains in place.

In Fig. 1 0 the upper and lower halves of the housing are shown, for illustrative purposes only, as displaced laterally from one another and from the body 22 to show how they are pivotally mounted for rotation about the axis of shaft '18. Fromthis it will be seen how the upper half of the housing comprising the cover plate BI and side wall 65 is capable of rotation about this axis relative to the tail gate 50-and side wall 60. Referring to'Figs. 1 and 2, it will be seen howthe upper half of the housing 45 and the conveyor carried thereby are thus capable of rotation about shaft T8 in such a manner that it can be lifted away from tailgate 56 and can move at its lower end (to the left in Fig. 1) within the'loading hopper 48 in case the flights 54 hit obstructions in theform of chunksof material or bulky objects within "the conveyor housing and particularly within the loading hopper 48. This capacity for movement on the part of the conveyor and the parts by which it is carried serves to release or eliminate excessive tension on the conveyor parts which might otherwise damage it or jam the conveyor when obstructions are encountered.

Between the meeting surfaces of the body flanges 55 and tail gate 56, and likewise between the side walls 59 and 60 and the cover plate SI,

suitable resilient gasket material is preferably inserted so as-to make a dust-tight closure and. to eliminate noise when the aforesaid parts come into contact with one another. Strips of rubber or rubberized fabric material are suitable for this purpose.

Adjoining the top of housing 46 the body is provided with a hinged cover 9! which rests on the cover plate BI and is free to move when the. housing 46 is elevated. It may be pressed toward the cover plate 61 by spring hinges or other suitable means, the hinge point of "the cover being shown at 92.

The body 22 may beelevated into dumping position by any of the usual means, there being shown in Fig. 6 a cam plate 94 afiixed'to the bottom of the body under which the roller 95 is pushed by the rod 96' operated by a hydraulic jack or the like.

Referring to Fig. 8, which shows the inner end of the left-hand conveyor chain track shown at the top of Fig. 1, the lower side. wall of channel 66 and the web 69 are cutaway to accommodate the sprocket'lB-which extends into the channel 66 and into engagement with the roller chain 5I (not shown) which is. located in this channel. Rotation of the sprocket'IB moves the chain and. its'attached flights-through the channelBG which 6 guides the roller chain-and determines its path. It wilt be observed that in this structure" there are no drivin-g'shafts or other obstructions any-- Fig. 11 shows means for adjusting the effective length of the conveyor chain track to compensate for wear in the chain and toadjust its tension. this means being inserted at the lower end of the track which is located in the loading hopper. Afixed to'the back of the web 08 is a block 98 having a bore to receive a threaded rod 99- adjustably held in the block by means of nuts [00, IOI. Rod 9-9 bears against the inner surface of an arcuate track section [:02 which is hinged at I04 to the outer side wall of a channel 66. The track I02 preferably has an integral flange I05 against which the side of the conveyor chain bears. The side plate 64 terminates short of the ends of channels 60 and of the members in which they are formed so that by lifting the upper part of housing 40 including the sideplate 64 above the top edge of side Wall 59' of the lower part of housing 46, access may be had from the outside to the nuts I00 and IOI, for changing th eiiective length of rod 99 andthe position of track section I02. The outer ends of the side walls of the channels 66 facing the section I02 are preferably flared outwardly as shown at I00 and I09 so as to' avoid corners on which theconveyor chains might catch. While the track adjusting means just described has been shown as placed at'the lower end of the conveyor, it-may' be placed elsewhere, for example atthe upperend along a part of the curved channel shown in Fig. 8.

In the embodiment so far described, the pivots connecting the conveyor housing parts to the body are shown as located at the under side of the upper looped portion of the conveyor. However, the invention contemplates that this pivotal connection may be otherwise located, for

example at the upper side of the conveyor where- 'by the housing :46 would swing away from the body on pivots further above the bottom of the body than in the construction illustrated as will now be described.

Referring to Figs. 13-15, the modified structure shown provides a higher pivot point for the conveyor assembly 40, shown as at the roof line of body 22, so as to give more clear space at the open end of the body when in dumping position to facilitate the free discharge of the load, particularly when it consists of atangled mass of rubbish which tends to come out as. a unit.

The-same drive shaft 30, coaxial with the body pivots, may be used as a source of power for the conveyor, the power being transmitted through chain 8|, as above described, to a. sprocket I20 fixed to a shaft- IZ I, which also serves as the pivotal connection of the conveyor assembly to the body by being rotatably mounted on the body in suitable bearings, the tail-gate portion of the conveyor housing being pivotally connected to the shaft. Shaft I2I may extend across the truck body as it will not be in the path I24 to the. sprockets which-drive the internal.

76 sprockets I9 which'move the conveyor. The stub shafts 18a connecting sprockets l9 and 80 in this embodiment are somewhat shorter than the corresponding shafts l8 and are supported in bearings which are mounted on the conveyor housing instead of on the truck body so that they move with the housing as shown in Fig. 15. In :both embodiments the stub shafts 18 or 18a provide the pivotal connection between the two relatively movable main parts of the conveyor housing. When the upper part comprising cover plate 6! and walls 64 and 65 moves away from the lower part comprising the tail-gate and Walls 59 and 60, the top loop of the track 66 will pass beneath shaft I 2| a .As in the embodiment first above described, the conveyor assembly is elevated, when the body is raised to dumping position, by cable 85 which is attached to a lever arm 14 rotatable about shaft l2l as a fulcrum, the lever being attached to the conveyor housing.

As may be seen from a comparison of Figs. 6

and 15, the higher pivotal mounting of the conveyor assembly results in more free space at the open end of the truck when in dumping position and may advantageously be used when the nature of the materials to be handled requires it. It will be understood that with shaft l2] extending from side to side of the body and driving sprockets 80 on each side it will be sufficient to drive shaft 12! from one end and the sprocket 3i and chain 8| at one side of the truck may be eliminated.

It is within the scope of the invention to substitute for the various chain and sprocket drives shown equivalent structures adapted to perform the same function such as drive shafts and bevel gears. It will be understood that exposed moving parts such as chains, sprockets, gears and the like will normally be enclosed in suitable housings which have been omitted from .the drawings for simplicity.

While the operation of the illustrative structures above described should be evident, there are certain aspects of the invention and its operation to which it is desired to call particular attention. It will be seen that the invention provides a unitary conveyor structure carried wholly by the upper portion of housing 46 and cooperating with the lower portion of said housing, in particular with the tail gate 56, to carry material upwardly and deposit it in the truck body 22. Since the conveyor assembly has no connecticn with the body other than its pivotal attachment to the body, the conveyor assembly is one which may easily be installed on numerous toward the sides and into the channels 65 where makes of dump truck bodies with but slight modification.

The means for driving the conveyor is such that it remains wholly operative regardless of the position of the body relative to the chassis and the position of the conveyor assembly relative to the body, since movement between these three structures does not alter the relationship between the driving shaft 30 and the stub shafts 18 or shaft 12! being driven thereby.

The conveyor of the invention is adaptable to be driven otherwise than from the engine of the vehicle on which it is mounted, as for example reverses its direction following the path determined by the channels 66, occupies but a small space within the body and makes possible quite complete utilization of the body space for the carrying of a load. The material being conveyed into the body will initially be deposited therein over the top edge 58 of the tail gate 56 and as the load fills up above the point 58 the conveyor will carry the material upwardly above the top of the load and shove it forward, packing the material into the truck body in advance of the upper looped end of the conveyor until the body is filled up to the path traveled by the flights 52.

Through the medium of the controlling handle 40 on the rod 39, the conveyor is at all times under the control of an operator standing adjacent the loading hopper 48 where he is in a position to observe the loading operation.

When the truck is to be emptied, the body is elevated as shown in Fig. 6, in which illustration it is somewhat below its full dumping position, and if in sliding out of the body the load is retarded by contact with the flights of the conveyor at the upper looped end thereof, in the position they occupy in this embodiment, the load may be ejected from the body by running the conveyor in reverse so that the flights will dig into that part of the load in contact with the conveyor and forcibly push it out of the truck body.

During loading, if the conveyor flights encounter objects which would tend to jam it if it were a rigid structure, the movement of the conveyor against the object will cause it to push itself outwardly away from the tail gate by reason of the freedom of the upper half of the housing 46, in which the conveyor is carried, to move with relation to the lower half of the housing. If under these conditions the conveyor fails to lift the obstruction up along the tail gate and into the body, the conveyor may be stopped and reversed if necessary and the obstruction removed.

The conveyor structure on the whole is one characterized by simplicity with a minimum of driving parts, bearings and the like requiring adjustment, lubrication or other attention.

Extending, as it does, across nearly the whole width of the loading and discharge end of the truck body, material dumped into the center of by an auxiliary engine which may be mounted upon the conveyor itself, or elsewhere, and connected by suitable driving means with sprockets 8D or other driving connections on the shafts 18 or 18a.

It will be observed that the conveyor, at its upper end where it enters the truck body and the loading hopper 58 through the opening 56 will for the most part be carried into the truck on the central portions of the flights 54 so that the material is not pushed by its own weight out the conveyor chains are running. "Suchmaterial as does come in contact with the inner surfaces of the conveyor housing slides along on the smooth webs B8 and 69 without meeting any ob- I structions.

It will be understood that the embodiment of the invention particularly described herein is merely illustrative and that modifications, some of which have been indicated, may be made therein without departing from the invention as defined in the claims.

What is claimed is:

1. In a self-loading dump truck having its body pivoted to its chassis for rear-end discharge and provided with an endless conveyor including a pair of chains and flights adapted to elevate material across the discharge end of the body and discharge it into the body, a conveyor drive system comprising two stub shafts having sprockets on their inner ends adapted to drive the chains of the conveyor, bearing means on said body supporting said shafts in axial alinement, a lower drive shaft extending transversely of the body and coaxial with the pivots between it and the chassis, means for driving said lower shaft, and means operatively connecting the ends of said lower shaft with the outer ends of said stub shafts whereby they are synchronously driven by rotation of the lower shaft.

2. In a self-loading truck, in combination, a body having an open end for discharge of its contents, an upwardly sloping tail gate positioned across said open end and extending downwardly below the bottom of the body, a loading hopper at the lower end of said tail gate, upstanding parallel side walls on said tail gate, a cover plate extending across said side walls, conveyor chain guide members secured to said cover plate and positioned inside and adjacent to said side walls and having chain-receiving channels extending upwardly from said hopper along said tail gate thence in a short loop inside the upper part of said body thence downwardly under said cover plate and back to said hopper, endless conveyor chains in each of said channels, material moving flights attached at intervals between said chains, means for driving said chains, and means for pivotally mounting said tail gate and said guide members relative to said body adjacent their upper ends whereby they may be swung away from the open end of said body.

3. In a self-loading dump truck, a body adapted to discharge from its rear end, a conveyor assembly including two endless chains carrying a plurality of horizontal flights attached at their ends to said chains, a housing for said assembly including a pair of vertical chain-guiding members having channels to receive and direct said chains, a sloping wall extending upwardly across said rear end, said chain-guiding members extending upwardly perpendicular to said wall and over the end thereof, the channels in said members forming short loops directing the conveyor in a curved path over the end of said wall, and means for mounting said housing upon the rear end of said body with said short loops extending into the upper part thereof.

4. In a self-loading truck, an endless conveyor assembly comprising two parallel side walls having channels therein defining the path traveled by the conveyor, endless roller-chains running in and supported by said channels, a single sprocket extending into the channel in each of said walls to drive the chain therein, means external to said walls for driving said sprockets in synchro nism, and flights attached at their ends to said chains and holding them in said channels.

5. In a self-loading dump truck, a body having a discharge end, a conveyor housing extending across said end, a chain-type conveyor in said housing, a crank having a hub provided with an axial bore and arms at either end, one of said arms being attached to said housing, means attached to the other of said arms and operative upon elevation of said body to rotate said crank, means rotatably supporting said hub on said body whereby it forms a supporting pivot for said housing, a shaft rotatably mounted in said bore, a sprocket on one end of said shaft and having a driving connection with the chain of said conveyor, and means for rotating said shaft to effect said drive.

6. In a self-loading truck, in combination, a body having a side open for the discharge of its load, a housing extending across said side and forming a closure therefor, an endless conveyor supported wholly upon said housing and extending therefrom into the upper part of said body in a short loop, means for pivotally mounting said housing on said body, and means for driving said conveyor.

'7. In a self-loading truck having a conveyor comprising an endless roller-chain and a looped normally stationary track for said chain, means for adjusting the effective length of saidtrack comprising a movable arcuate track section at a looped portion of the track, said section being hinged to the track at one end and in overlapping relation to the track at its other end, and means for adjusting the position of said section whereby the track may be lengthened or shortened.

8. A self-loading truck comprising, a body having an open rear end, a tail gate extending across said end and terminating at its lower end in a loading hopper, a conveyor comprising spaced apart endless roller chains having horizontal flights connected at intervals to said chains, and track means for said conveyor carried wholly by said tail gate and extending from said hopper upwardly along said tail gate and looped over the top thereof in the upper rear portion of said body.

9. A self-loading truck comprising, a body having side walls and an open rear end, parallel track-carrying members pivoted to said body adjacent the top of said rear end opening and extending at the top into said body a short distance adjacent the inner surfaces of said side walls, a conveyor extending across said open rear end and comprising a pair of endless roller chains carried by said track carrying members, horizontal flights attached to said chains, and a housing for said conveyor adapted to serve as a closure for said rear end.

JOSEPH F. GOODMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,915,927 Goodman June 27, 1933 2,151,894 Cambessedes Mar. 28, 1939 2,219,166 Schaefer Oct. 22, 1940 2,316,826 Wachter Apr. 20, 1943 2,339,938 Meyer Jan. 25, 1944 2,393,732 Balbi Jan. 29, 1946 FOREIGN PATENT Number Country Date 3,916 France Jan. 18, 1905 553,601 Germany Aug. 29, 1930

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