US1397956A - Loader - Google Patents

Description

0.1. GILLILAND.

LOADER.

APPLICATION FILED NOV. 2,19I1.

Patented Nov. 22, 1921.

4 SHEETS-snm 2.

w u\\\ mr/M W L. NQ ii JWM MQW. W w

0. L. GILLILAND.

LOADER.

APPLICATION FILED NOV. 2,1917- Pawnd Nov. 22, 1921.

4 SHEETS-SHEET 4.

T n NN .l. M. muv N l 5 KH; l ,l .MN t. 4 QN mm QN Mm W o QN EN MN @MQW UNITED STATES PATENT OFFICE.

OBRA L. GILLILANID,` 0F MINNEAPOLIS MINNESOTA, ASSIGNOR TO NATIONAL SHOCK LOADER CO., OF MINNEAPOLIS, MINNESOTA, A CORPORATION OF SOUTH DAKOTA.

LOADER.

Speccation of Letters faterrt.

Patented Nov. 22, 1921.

Application led November 2, 1917. Serial No. 199,955.

T 0 all t0 hom t may concern Be it known that l, ORFs-x L. GILLILAND, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Loaders and I do hereby declare the following to be a Jfull, clear. and exact description ot the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to loaders for use in loading bundles, shocks, hay, and the like, and is in the nature ot' an improvement on my copending application entitled Loaderf iled July 17, 1916, under S. N. 109,628.

To the above end, the invention consists of the novel devices and combinations of devices hereinafter described and delined in the claims.

In the accompanying drawings, which illustrate the invention, like characters inf dicate like parts throughout the several views.

Referring to the drawings,

Figure 1 is -a longitudinal vertical section taken on the line 1 1 of Fig. 2 and illustrating the front end portion of the loader, some parts of which are shown in different positions by means of broken lines;

Fig. 2 is a view, principally in plan, illustrating the parts shown in Fig. 1, with some parts removed and other parts sectioned;

Fig. 3 is a fragmentary detail view in section taken on the irregular line 3-3 of Fig. 2, on an enlarged scale;

Fig. 4 is a perspective view of one of the side plates and connecting tie bars;

Fig. 5 is a fragmentary detail perspective view ot' the pickup device;

Fig. G is a front end elevation of substanT tially one-halt of the loader, on an enlarged scale; and i Fig. 7 is a plan view ot the parts shown in Fig. 6.

The main frame of the loader, at its rear portion, is supported on a pair of traction wheels, not shown, and includes a pair of forwardly and downwardly projecting side channel bars, the front end portions of which are bent to project substantially horizontal. These side bars 7 are rigidly con nected at their angles by an angle tie bar 8. (.)ther tie bars and braces will be provided i'or further rigidly connecting the side bars rearward of the tie bar 8. but, for the purpose oi this case, it is not thought necessary to illustrate the same.

A supplemental frame, located directly under the front horizontal end of the main trame, comprises a pair ot' channel side bars 9, the rear ends of which are pivoted at l0 to plates 11, formed by bending the ends ot the tie bar 8 and rigidly securing the same to the side bars 7 ot the main frame. These pivots 10 permit raising and lowering movement of the rear end of the supplemental frame, with respect to the main frame, and to be supported in ditl'erent elevations above the ground.

Rigidly secured to the forward end of each side bar 9 of the supplemental frame,

yis a wheel bracket 12 having integrally formed therewith a vertical sleeve-bearing 13, in which is rotatively mounted an upright front wheel steering post 14. These steering posts 14 have their lower ends rigidly securedV to the inner ends of stub axles 15 on which are jonrnaled a pair of front wheels 1G. The lower ends ot the bearings 13 rest on shoulders 17 on the stub axles 15 and support the wheel brackets 12, and hence, the front end of the loader `trom the iront wheels 16.

To each wheel bracket 12, is rigidly secured the lower ends of a pair of laterally spaced upright angle posts 18. These four posts 18 are laterally spaced transversely of the loader and rigidly connected at their upper ends by a channel tie bar 19. The ends of this tie bar 19 extend outward of the pairs of posts 18 and have rigidly secured thereto brackets 20, in which the upper ends oi" the wheel posts 11 are journaled. These brackets 20 are also rigidly secured to the posts 18. Diagonal anglebrace bars 21 rigidly connect the inner posts 18 to the tie bar 19.

To each wheel post 14, above the respective bracket 20, is rigidly secured a rearwardly projecting arm 22 and to the right hand wheel post 1-1. is also rigidly secured an inwardly projecting toothed segment 23. A tie rod 24 connects the two arms 22 for simultaneous movement. Steering movement is imparted to the front wheels 16 by a Worm 25 meshing with the segment 23 and which worm also locks the wheels 16 where set. The worm 25 is secured to the front end of a long steering rod 26, which extends to the rear of the loader and is preferably operated by a hand wheel, not shown. Obviously, the shoulders 17 and hubs of the arms 22 hold the wheel posts 14 against endwse movement in their bearings 13 and 20.

A neck yoke evener is carried by the wheel posts 14 and comprises a pair of angle brackets 27, having their horizontal members turned outward and their vertical members turned upward. The vertical members of the brackets 27 are in the form of long sleeves 28, through which the wheel posts 14 project. Collars 29, on the wheel posts 14, engage the lower ends of the sleeves 28 and support the brackets 27 with freedom for swinging movementin a horizontal plane and with theupper ends of said sleeves in engagement with the bearing brackets 20. llorizontally elongated apertures 3() are formed in the outer ends of the horizontal members of the brackets 27 to receive neck yoke straps, not shown. Integrally formed with the upper ends of the sleeves 28, is a pair of forwardly projecting arms 31 connected by a tie or equalizing rod 32.

The forward ends of the side bars 7 of the main frame project between the pairs of posts 18 and are supported therefrom, for raising and lowering movement, with respect to the forward end of the supplemental frame, by bell crank levers 33, links 34 and operating rods 35. The bell crank levers 33 are located between the pairs of posts 18 and secured thereto by pivot bolts 36. One of the arms .ofthe bell crank levers 33 projects forwardlyand upwardly and has the forward ends of the operating rods 35 pivoted thereto. rlhe other ends of the bell crank levers 33 project forwardly and downwardly and have the upper ends of the links 34 pivotally attached thereto. The other or lower ends of the links 34 are connected to the side bars 7 by'eye-bolts 37. Suitable mechanism, includingV a latch lever, not shown, will be provided for connecting the rear ends of the rods 35, for imparting simultaneous endwise movement thereto and for holding the saine where set. Y

To facilitate the raising of the front end of the main frame, counterbalancing springs 38 are provided. The lower endsof these springs 38 are anchored to the wheel brackets 12 of the supplemental frame and their upper ends are connected by links to rearwardly and upwardly projecting arms 4G integrally formed with the bell crank levers 33.

Mounted within the main and supplemental frames, are two vertically disposed and laterally spaced cast side plates 41 rigidly connected `and held properly spaced, at theirrearends, by an angle tie bar 42 and,

at their intermediate portions, by angle tie bars 43. The side plates 41 are intermedi ately and pivotally supported for vertical swinging movement by a pair of axially alined tubular trunnions 44, integrally formed with the' outer faces thereof and journaled in bearings 45 on the side bars 9 of the supplemental frame. It will be noted that the trunnions 44 are located considerably rearward of the longitudinal centers of the side plates 41,' so that the forward ends thereof will tend to tip downward.

The forward ends ofthe side plates 41 are supported, at the desired elevation above the ground, by a pair of short chains 46 and a pair of rods 47. One of the ends of the chains 46 is anchored to the front ends of the side plates 41 and their other or upper ends are attached to the forward ends of the rods 47. The intermediate portions of the chains 46 are arranged to-run over grooved guide wheels 48 journal-ed Von the inner faces of the side bars 7 of the main frame. Suitable 'mechanism, preferably foot-actuated, not shown,will be provided for connecting the rear ends of the rods 47, imparting -endwise movement thereto and holding the same where set. It may be here stated, that one of the purposes of the short chains 46 is to provide a flexible connection, whereby the forward ends of the side plates 41 may lift, in case either one thereof engages an obstruction. Y

. AFormed with eac-h side plate 41 and spaced inward therefrom is an endless flat track 4Q positioned in a vertical plane with its outer edges connected by a vertical web 50. The upper and lower sections of thetrack 49, at their forward ends, come together in the forni of a downwardly inclined V. The upper section of the track 49 has on its inner face a `forwardly and downwardly inel'ued camV surface 51, the lower end of which is connected to the upper member of the V. by a horizontal surface 52. Also formed in the upper section of the track 49. is a. downwardly andv rearwardly inclined cain surface ln the lower section of the track 49, under the track suriace 52, is a cam surface 54. I v

Betr-.Teen the side plate 41 and web 50, is a wheel pocket :that is concentric with the @n the. loweredgeof the side plate41, is an inwardly projecting horizontal flange 55', the rear end ofA which runs Vinto the bottom and rear wall of the wheel pocket 55 and forms an extension thereof.` Extending transversely through the upper and lower sections lof Vtheytrack 49 and through the Aweb 50.7is a passageway 56.

A. track section 57 forms a forward continuation of the-rear portion of the ,lower section of the tracl 49. The track 57, where the same lioinsthe track 49, is curved and formed by widening the flange 55. ...The

i-,amua

outer portion of the track 57 is straight and extends forwardly and downwardly in a plane below the adjacent portion of the flange 55', and is substantially parallel therewith. Between the curved and straight portions of the track 57, is a right angle drop or depression 58.

Mounted in each wheel pocket 55, is a pair of integrally formed sprocket wheels 59 and 60 journaled on a short shaft 61, having its outer end journaled in the hollow trunnion 44 and its inner end in a seat 62 formed in the web 50. Alined with each sprocket wheel 59, is a relatively small sprocket wheel 63 journaled on a movable bearing 64, adjustably secured to the front end of the side plate 41, and which bearing acts as a chain tightener for a sprocket chain 65 arranged to run over the alined sprocket wheels 59 and 63. The upper and lower laps of each sprocket chain 65 are held spaced apart by a large smooth faced wheel 66, located between the side plate 41 and web 50 and journaled on a short shaft 67 mounted in seats formed in the side plate 41 and web 50.

Several sets of pickup devices or forks, as shown three, are mounted on the loader and moved in an endless course by the sprocket chains 65. Each set of pickup devices comprises a plurality of tines 68, a horizontal tubular bar 69 and a pair of arms 70, to the intermediate portions of which are rigidly secured the ends of said bar. The tines 68 are detachably but rigidly secured to the bar 69 by laterally spaced holders 71 integrally formed therewith and have curved channel-shaped front end portions and tubular rear end portions to receive the rear ends of the tines. Cotter pins 72 are, as shown, provided for holding the tines 68 in their holders 71, but, of course, nuts or other securing means may be provided.

The short or frontends of the arms are secured to the sprocketchains 65 by long pivot pins 73, on the intermediate portions of which are journaled rollers 74. These rollers 74 also act as spacing devices for the chains 65 and arms 70. Relatively short rollers 75 are journaled on trunnions secured to the rear or long ends of the arms 70, project in the same direction as the rollers 74, and are arranged to run over the inner face of the endless track 49. Integrallv formed with the rear portion of each arm 'O, is an offset and upwardly projecting cam fiange 76. These cam flanges 76 are offset inward from the arms 70, project thereabove and are provided for a purpose that will presently appear.

During the rearward travel of the pickup devices or forks, the rollers 75 move over a track surface afforded by the upper face of the upper section of the track 49 and are held in contact therewith, except at the passageway 56, under the action of the weight or load on said forks. While the rollers 75 are moving through the passageways 56, the free or rear ends of the arms 70 are held by the engagement of the cam fianges7 6 with small rollers 77. These rollers are journaled on brackets 78 carried by an angle tie bar 79 rigidly secured at its end to the upper edges and intermediate portions of the side plates 41. This tie bar 79 also assists the tie bars 42 and 43 in rigidly connecting the side plates 41. The engagement of the cam flanges 76 with the rollers 77 prevent the forks from tipping downward, under the weight of the load thereon.

A deck, comprising a plurality of edgewise spaced plates 80, extends from the front ends of the side plates 41 to the tie bar 79. The lower ends of the deck plates 8O are folded backward and extend, for a considerable distance, toward the tie bar 43. Each deck plate 80 is independently secured in position by having its longitudinal edges folded around rods 81, the upper ends of which are anchored to the tie bar 79 and the lower ends of which are attached to the tie bar 43. It will be noted ythat the end portions of the rods 81, from points where they leave the deck plates 80, are spread horizontally to brace said deck plates. The spacing of the deck plates 80 is such that the tines 68 of the pickup devices work freely therebetween.

The pickup devices are preferably positioned to move over the surface of the ground, substantially at the same elevation in which the cut of the grain or hay is made. To gather the materials below this elevation, I provide a multiplicity of laterally spaced rake fingers 82, which extend transversely across the loader, at the extreme front ends of the side plates 41. There is a pair of these rake fingers 82 secured to each deck plate 8O and the tines 68 passed between the several pairs thereof and pick up the materials, such as straw and hay accumulated thereby. To permit the rake fingers 82 to yield, in case they engage obstructions, such as stones, stumps, or rough places in the field, the same are provided with spring coils 83 located in the curved front ends of the deck plate 80. From these coils 83, the rake fingers 82 extend downwardly and rearwardly, and hence, curve forwardly, so that their sharp ends are positioned quite close to the surface of the field.

An elevator is provided for receiving the bundles or other materials delivered thereto by the pickup devices. This elevator comprises a pair of endless sprocket chains 84 and a multiplicity of spaced slats 85, in the form of angle bars, with one of their flanges secured to the sprocket chains and projecting in the direction of the travel thereof,

and their other flanges projecting inwardly, The inwardly projecting flanges of the slats 85, on the upper lap of the sprocket chains 84, scrape over a fiat deck 86 secured to side boards 87. The lower ends of the side boards 87 are rigidly secured by castings 88 to the upper flanges of the side bars 7 of the main frame and the Vupper, ends thereof are supported on framework, not shown, carried by the main frame. The sprocket chains 84 run over upper and lower pairs of sprocket wheels, only the lower of which are shown and indicated by the reference numeral 89. These sprocket wheels 89 are journaled on a transverse shaft 90, having its ends mounted in the castings 88.

The sprocket chains 65 of the pickup devices are driven from the elevator by a pair of short sprocket chains 91, which run over the sprocket wheels 60 and alined relatively small sprocket wheels 92 integrally formed with the sprocket wheels 89 and journaled on the shaft 90. Y The elevator is driven, in the direction of the 'arrows marked thereon in Fig. l, by suitable connections,

not shown, from the traction wheels of thev loader to the upper sprocket wheels of said elevator. The loader may be propelled by a gas engine mounted thereon, or pushed or pulled by a tractor or draft animals. j

Longitudinal brace angle bars93 connect the upper ends of the posts 18 with the intermediate portions of the side bars 87. These brace bars 98 securely hold the upper ends of the posts 18 against forward and backward movement, but to permit ,the required raising and lowering movement ofV the supplemental frame, their forward ends are pivotally attached to the castings 20 and their rear ends are pivotally attached to the side boards 87. l i 1 The operation of the improvedV loader maybe briefly described as followsze- By manipulating the rods 35, the operator may raise orlower the forward end of the main frame and thereby simultaneously impart a like movement to the rear end of the supplemental frame, as indicated by broken lines in Fig. 1,." TvVith this adjustment of the supplementalframe, the side plates 4l are bodily carried therewith, together with the pickup devices or forks. It willthus be seen that the pickup devices may be set, so that their tines 68, during the lower lap of their travel, will be at the desired elevation above the ground. Then by manipulating the rods 47, the operator may oscillate thev side plates 4l to properly position the tines 68. Obviously, by drawing rearward on theA rods 47, the forward ends ofthe side plates 4l may be raised, so that they, or the tines 68, and rake fingers 82, will clear an ob-A struction. As previously stated, the flexible connections or chains 46 will permit the on the inner faces of the lower sections of the tracks 49 and, when makingV their upper lap of travel, said rollers move on the inner' faces of the upper sectionsof said tracks. Also, duringthe lower lap of travel of the sprocket chains 65, the rollers 74 move on the flanges 55 and, during their upper lap of travel, said rollers move on the. upper faces of the upper sections of the tracks 49.`

lt will alsoV be noted that the rollers 74 move in thejsame' endless diamond-shaped courses with the sprocket chains 65 and carry the front ends of the arms 70 there-A with, while the rollers 75 move `back and forth in substantially a horizontal course, but at different elevations.Y It will thus be seen that the rearwardly moving pickup devices move bodily over the forwardly moving pickup devices. e

At the beginning of the forward movement ofthe pickup devices, the arms `70 are in substantially horizontal positions and the tines 68 are4 completely vwithdrawn from between thefdeck plates 8O and. their points project upwardly.` As the sprocket chains 65 Amove under the sprocket wheels 59. and toward` `the wheels 66, the tines 68 are brought into substantially horizontal positions.` Further `movement of the sprocket chains 65 will cause the tines 68 to move bodily between the rearwardly projecting endsof the deck plates and progressively tip toward the ground, until they pass under the wheels 66, at which.` points said tines pass between the, pairs of rake lingers 82 and pick up the teprof the load accumulated thereby. Under the advance movement of the sprocket 'chains 68V from the wheels 66,

the tines 68'. are bodily and gradually lifted and just before the rollers 74 reach the sprocket wheels 68, the rollers 75 engage the cam surfaces 54, which abruptly throw the points of the tines 68 `downward and further advancemovement thereof causes said tines to enter a bundle or shock or pick up loose lmaterials on .thek ground. As the rollers 74 pass around the sprocket Vwheels 63, the rollers 75 stand substantially still, while the points of the tines 68 are gradually lifted withv the load. The upward movement of therollers 75 on the cams 54 carries the sameronto the track surfaces 52.

During the upper lap of travel of the sprocket chains 65, the weight of the load will tend to tip the tines 68 downward, and thereby hold the rollers 75 onto the upper sections of the tracks 49. 1While the rollers 74 are moving upward from the sprocket wheels 63 to the wheels 66, the points of the tines are still gradually lifted to insure the safe delivery of the load over the deck plates 8O to the elevator. After the rollers 74 have passed over the wheels 66, the tines 68 start to recede and are gradually withdrawn from the load and from between the deck plates 80.

The purpose of the passageways 56 is, of course, to permit the connections between the sprocket chains 65 and arms 70, to wit z-the pivot pins 7 3 and rollers 74, to pass through the tracks 49. To carry the rollers 75 across the passageways 56, during their rearward movement, there are provided the rollers 77, with which the cam flanges 76, on the arms 70, engage and hold the rear ends of said arms against lifting' movement. In the forward movement of the rollers 75, they are carried across the passageways 56 by the track extensions 57, including the bottom of the depressions 58. These track extensions 57 project inward from the tracks 49, suiliciently to be engaged by the curved lower edges of the arms at points directly under the barsv 69. Obviously, with the intermediate portion of the arms 70 on the track extensions 57 and the rollers 74 on the tracks 49, said arms will be held against vertical swinging movement, and thereby carry the rollers across the passageways 56. llfhen the pickup devices are traveling without a load, the overbalanced rear ends thereof will tend to tip downward.

To further guide the rear ends of the arms 7 0 over the tracks 49 and across the passageways 56, the spacing of the upper and lower sections of said track are such that the oppositely moving arms 70, during the intermediate portion of their travel each way, slide, the one upon the other, and act as track sections, which hold the rollers 7 5 and the tracks 49 and prevent swinging movement of the arms 70 in crossing the passagewa s 56. Y

y positioning the tines 68, so as to pick up only the top of the load accumulated by the rake fingers 82, all stones gathered by said ingerswill be left on the ground and work their way through the rake lingers, or, in case the stones are too large to pass therebetween, said fingers will yield and pass over the same.

In picking up a shock, the advance set of tines 68 will enter the nearest bundle or bundles and force the butt end or ends thereof into the shock and, at the same time, lift the same, which will tend to tip the tops of the bundles toward the loader. The next advancng set of tines 68 will enter the bundle or bundles of the next nearest shock and force their butt ends into the shock and, at the same time, lift the same and tip their top or tops onto the first lifted shock. This action is repeated until all of the bundles of a shock are picked up. The importance of first forcing the butts of the bundles into a shock is to hold any loose grain therein, or which may be shelled, during the picking up of a shock. In case any loose grain falls onto the deck S6, at the time the bundles are delivered from the pickup devices to the elevator, or while the bundles are being moved upward by the elevator, the same will be collected bythe slats 85 and scraped upward thereby on the deck S6 and delivered onto a conveyer, not shown. Such a conveyor would preferably be arranged to carry the materials delivered thereto, by the elevator. into a basket rack on a vehicle driven at one side of the loader. The elevator will, of course, handle also all kinds of materials delivered thereto, whether loose or in bundles, and bundles projecting between the slats of the eleva-tor will sweep the deck 86, and thereby assist in carrying all loose materials thereon to the conveyer.

It will be noted that the trunnions 44 are so positioned that the forward ends of the side plates 41 tip downward, when the pickup devices are traveling idle without a load. It will also be noted that the pull on the sprocket chains 91 over the sprocket wheels 60 is in a direction, which tends to lift the forward ends of the side plates 41 and thereby Substantially balance the same, so that there is very little pull on the connections 46 and 47. In case the tines 68 engage an obstruction, or the load being accumulated thereby is such as to cause the sprocket chains 65 to drag, the increased pull on the sprocket chains 91 will lift the forward ends of the side plates 41, and hence, the respective tines 68, and thereby cause the same to clear the obstruction or move out of the load being accumulated.

The above described loader has, in actual usage in the field, proven highly efficient for the purpose had in view. By the use of the rake fingers S2, the field is raked clean, thus preventingr any waste. From actual inspection of the field, under a multiplicity of shocks, after they had been picked up, practically no loose grain was found.

Vhat I claim is 1. In a loader of the kind described, the combination with a truck, of a pair of endless chains mounted on the truck and means for driving the same, a pickup device including a pair of carrying arms, connections attaching one end of the carrying arms to the chains, upper and lower tracks vertically spaced to afford channels in which the other or free ends of the carrying arms extend for travel on the tracks, upper and lower track surfaces on which said connections travel, and vertical passageways in the channels through which the connections move Afrom the upper track surfaces to the lowei` track surfaces.

Q. Ina loader' ot the kind described, the combination with a truck, of a pair of endless chains mounted on the truck and means for driving the same, a pickup device including a pair of carrying arms, connections attaching one end of the carrying arms to the chains, upper and lower tracks vertically spaced to afford channels in which the other or free ends of the carrying arms extend for travel on the tracks, upper and lower track surfaces on which said connections travel,

- vertical passageways in the channels through sageways.

which the connections move from the upper track surfaces to the lower track surfaces, and means for guiding the free ends of the arms across the passageways.

3. In a loader of the kind described, the combination with a truck, of a pair of endless chains mounted on the t-ruck and means for driving the same, a plurality of sets of pickup devices each having a pair oi carrying arms, connections attaching one end of the arms to the chains, upper and lowei` tracks vertically spaced to ail'ord channels in which the other or free ends of the carrying arms extend for travel on the tracks, upper and lower track surfaces on which Y said connections travel, and vertical passageways in the channels through which the connections move from the upper track surfaces to the lower track surfaces, said pairs of carrying arms alternately acting as track sections for the other of said arms during certain portions of their travel.

4. In a loader of the kind described, the combination with a truck, of a pair of endless chains mounted on the truck and means 'for driving the same, a plurality of sets of pickup devices each having a pair of carrying arms, connections attaching one end of the arms to the chains, upper and lower tracks vertically spaced to ailord channels in which the other or free ends of the carrying arms extend for travel on the tracks, upper and lower track surfaces `on which said connections travel, vertical passageways in the channels through which the connections move from the upper track surfaces to the lower track surfaces, said pairs of carrying arms alternately acting as track sections for the other of said arms during certain portions of their travel, cam flanges on the carrying arms, and rollers with which said cam flanges engage for holding said arms during their travel through the pas- In a loader of the kind described,the

g combination with a truck, of a pair of side AAplates intermediately pivoted on the truck for vertical swinging movement, means for moving the side plates and holding the same in different'positions, anda pickup device mounted on the side plates to travel an endless course.

' 6. In a loader of the kind described, the combination with a truck having a frame, of side plates intermediately pivoted to the frame for vertical swinging movement, a pickup device carried by the side plates, liexible connections for moving the side plates on their pivots and for holding the same in different set positions, said connections arranged to permit the side plates to move on their pivots to clear an obstruction.

f7. In a loader of the kind described, the combination with a truck having a frame, of side plates pivoted to the frames, means for holding the side plates on their pivots, whereby their front ends are free to lift and then return to normal position, a pair of endless chains mounted on the side frames,

means for driving the chains, including a wheel at the axis of the pivots of the side `frames and a belt arranged to'run over said wheel, the pull on the belt tending to swing the side plates on their pivots and lift their front ends, and tine-equipped bars carried' termediate portion of the main frame, said front wheels being journaled on the supplemental frame, posts on the supplemental frame, a lifting device including a rocking element pivoted to the post and operative to lift the main frame, and a pickup device carried by the supplemental frame.

9. In a loader'of the kind described, the combination with a truck including front wheels, a main frame :and a supplemental frame having its rear end hinged to the intermediate portion of the main frame, said front wheels being journaled on the supplemental frame, posts onV the supplemental frame, a lifting device including a rocking element pivoted to the post and operative to lift themain frame, side plates pivoted to the supplemental frame for vertical swine'- ing movement, means supporting the si e plates from the main frame'in different positions on their pivots, and a pickup device carried by the side plates. i y

l0. In a loader of the kind described, the combination with a truck including front wheels, a main frame and a supplemental frame having its rearV end hinged to the intermediate portion ofthe main frame, said front wheels being journal'edion the supplethe supplemental frame for vertical swng- In testimony whereof I afx my signature lng movement, means supportlng the slde m presence of two wltnesses. plates from the mam frame 1n dlferent p0- .v OHRA L. GILLILAND. sltlons on thelr plwots, a plckup devlce carried by the side plates, and a deck 0n the Witnesses:

supplemental frame with which the pickup CLARA DEMAREST,

device cooperates. HARRY D. KILGORE.

Images