US2428156A - Loading machine - Google Patents

Description

' Se t. 30, 1947.

F. E. HARTSFIELD LOADING MACHINE Filed July 14, 1945 3 She ets-Sheet 1 1321111 I. Ha rtsfi'e/c/ INENTOR.

ATTORNEYS Sept. 30, 1947. v F. E. HARTSFIELD LOADING MACHINE Filed @1514, 1945 5 Sheets-Sheet 2 INVENTOR. Frank [.Hartsfie/ ATTORNEYS Sept. 30, 1947. F. E. HARTSFIELD I 2,423,156

I LOADING MACHINE Filed July 14, 1945 3 Sheets-Sheet 5 Frank 1:. Ha rmfiel A TTORJVEYS' Patented Sept. 30, 1947 LOADING MACHINE Frank E. Hartsfield, McKinney, Tex., assignor of one-fourth to C. M. Matney and one-fourth to R. S. Raper, both of McKinney, Tex.

Application July 14, 1945, Serial No. 605,016

15 Claims. 1

This invention relates to new and useful im- I provements in loading machines.

One object of the invention is to provide an improved vehicle loader of the type employing the ground as a fulcrum point and operated by backing the vehicle toward the load to be lifted and dumped into the truck.

A particular object of the invention is to provide an improved loader of the character described which is complete within itself and adapted to be detachably connected with the rear end of a vehicle so as to be operated thereby, but otherwise without attachment or connection of any of its other elements with the vehicle, whereby no elements are added to the vehicle or its wheels, other than a simple coupling or attaching means at the rear end thereof, thus leaving the vehicle free for other uses.

A further object of the invention is to provide an improved loader having a scoop arranged so that the direct rearward thrust of the vehicle frame is imparted thereto so as to produce a better scooping action when the Vehicle is moved rearwardly.

Another object of the invention is to provide an improved loader including a portable carriage having ground wheels for supporting it, when moved rearwardly and forwardly, by the vehicle to which the carriage is attached and a groundengaging fulcrum member connected with a linkage frame suspended from the carriage and carrying a receptacle whereby more efficient scooping and loading may be accomplished.

A construction designed to carry out the invention will be hereinafter described together with other features of the invention.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings, wherein an example of the invention is shown, and wherein:

Fig. l is a side elevation of a loader, constructed in accordance with the invention, attached to the rear end of a truck and in loading or scooping position,

Fig. 2 is a similar view showing the loader in full dumping position, and

Fig. 3 is a rear elevation of the loader as illustrated in Fig. 2.

In the drawings, the numeral l0 designates a substantially horizontal frame of a carriage, indi-v cated generally by the letter A. The frame includes longitudinal side bars I I which are angular in cross-section and. are provided with depending angular standards l2 suitably secured to the side bars near their rear ends in any suitable manner, as by welding. A transverse axle I3 is fastened to the lower ends of the standards and ground wheels M are suitably journaled onsaid axle out-- Wardly of said standards. These wheels may be equipped with rubber tires if desired. Near the forward end of the frame upright plates l5 have their'lower ends suitably secured to the inner sides of the bars H, as by welding. At the forward ends of the bars ll, bearing brackets IE are secured on the upper sides thereof and the ends of an angular cross bar H are secured to the brackets so that said bar overhangs the same. The combination of the side bars I l and the cross bar H provides a U-shaped frame.

A rock shaft l8 extends between the side plates and has its ends suitably secured therein. This shaft pivotally supports the upper and forward end of a linkage frame indicated generally by the letter B, which frame extends rearwardly between and beyond the side bars II. On the rear end of the frame B, a receptacle. C is pivotally mounted. A fulcrum member D having ground penetrating prongs E at its forward end inclines upwardly and is pivotally connected at its rear end to the lower forward end of the frame B. Links F pivotally attached at their forward ends to the upper rear end of the member D extend longitudinally and rearwardly in the frame B, with their rear ends pivotally attached to the upper portion of the receptacle C.

tions the prongs would immediately dig into the ground and possibly give a slight rocking movement to the receptacle which would aid in getting under the load. In view of the fact that the frame Ii] of the carriage is disposed substantially horizontal, and the linkage frame B extending longitudinally thereof, the direct rearward thrust of the frame G of the motor vehicle is imparted to the loader and thus in co-action with the dragging fulcrum member D, more efficient loading is performed.

When the receptacle 0 has been loaded, the rearward movement of the truck H is stopped the links F support and swing the receptacle (2 so that when it overhangs the body K of the truck...

it will be in dumping position and thus depositthe load in said body.

It is to be observed that; it is not. necessary; to extend the fulcrum member a great: distance..- under the body of the truck because in, the loading position the prongs E will be substantially under the rear axle of the truck. The SWiIIgIOf' the frame B will be sufiicient to cause the receptacle Citooverhang the-body Kto such anextent that. the load will bedischarged into. the. medial portion of said body, therebygiving it. an opportunity to spread over. the. entire. area. of such a body.

The. linkage frame Bfwillinow. be described in detail. Hangers '19; each. composed. of twinspaced bars, depend. from. the rock shaft. I8. and have their upper endslwelded or otherwise fastened on a transverse sleeve l9l', lo.osely mounted on said shaft. Between each pair of. bars, an elongate collar 20. isjournaled. on a. bolt 21 enaging in holes ZZ'insaidbars, at. the medial portions. thereof. Aplurality, of. said hol'esare provided so that the collars. may be vertically ad- .iusted.v These collars. are. welded or. otherwise scoured tothe forward ends .ofjlongitudinal main, bars 23.. which. extend rearwardly and, are bent. downwardly. at. 24 so as toincline. rearwardly and again bentrearwardly at. 25; The. scoop. Cfis of the usual. construction, having a. flat bottom 26. andan upright backzT connected by angular side plates. 28.. The. scoop'is. pivoted by means of studs 29 projectingfrom the lower portions of the. side. plates adjacent. the open end of said scoop. and. engaging in the. extended rear ends of the. bars 23; Itwill, be observed that the upper portion of the scoop normally lies between the bends 24 and. thus the. downwardly bent portions of the mainbars lie on each side of saidscoop- Elongate collars: 30. are. journaledpn a swing shaft. 3.! between the lower ends of the individual bars. of each hanger IS, in which bars said shaft is suitablymounted. The collars 30 are welded or otherwise secured to the forwardends of struts 32jwhich. underlie the main barsand incline upwardly andrearwardly toward saidbars. Shackles 33 are secured to the rear ends of'the struts so as to straddle the mainbars. Each shackle carries a cross bolt on pin 34 which rides on the. upper edge of the correlated. main bar, whereby the rear ends of the struts are slideably suppfllftedl on the mainv bars. Elongate guides 35 are secured to. the upper edgesof the main bars and extend through the shackles so as to confine the bolts 34.

The'fulcrum member 13 includes a sleeve 36 which is journaled on the. swing shaft 3| between the hangers: IS; The rear ends of" a pair of cylindrical bars 31' are'suitably secured to the. sleeve near each end thereof, whereby they are spaced apart on each side of the longitudinal center of the apparatus. These bars telescope elongate sleeves 38, the ends of which may be flattened, bent and pointed to form the prongs E. Near the prongs E, the sleeves are connected 4 and braced by a transverse bridle bar 39 fastened thereto. Near their upper ends, the sleeves are provided with a plurality of spaced holes 40 for receiving cotter keys 4| adapted to pass through apertures 42 in the bars 31, whereby the fulcrum member D may be longitudinally adjusted to extend it or retract it. Adjacent the sleeve 36; the bars 37 are provided with upstanding ears 43 which are provided with a plurality of spaced holes 44 for receiving pivoted bolts 45. The links F are sinuous in shape and have spaced holBs. 46v at their forward ends receiving the bolts between the ears, whereby the parts are adlustahly connected. The rear ends of the links are bent? upwardly; and rearwardly and have their rear endspivoted to cars 41 secured to the outer faceof theback 21 of the scoop C near the top thereof.

A, telescoping reach bar 48 is secured at its forward end to a transverse sleeve 49 loosely mounted. on a bar 50 extending between the sleeves 38 and securedthereto. The elementsof this bar are provided. with spaced holes 5! and 52- for receiving a cotter key 53 whereby the telescoping bar may be longitudinally adjusted. The bar 48 issecured at its rear end to the medial portion of a cross bar 54 slideably confined in the guide 35', on the upper edges of the main bars 23, by means of. keepers 55 at its outer ends. When. the linkage frame B is swung, the cross bar will travel longitudinally of themain bars in said guide.

For supporting the carriage frame H) at the proper elevation to aline it with the truck frame G, a- U-shaped prop56 rests upon th reach bar 48 and has itsupper ends secured to a rock shaft 51 journaled in the brackets IS on the forward ends of the bars II. A hand lever 58 is fastened to one end of this shaft and is provided with a dog 59, of the usual construction, for engaging a toothed locking segment 60 fastened on the adjacent side bar H, whereby said shaft and prop may be locked in adjusted positions. By this means, the forward end of the carriage frame may be supported and'vertically adjusted as desired. Onthe forward end of each side bar I l a yoke-shaped coupler BI is fastened. Each coupler is slotted. vertically and has a hook 62 pivoted therein. A draw bar 63 is transversely disposed across the rear end of the frame G and has its ends bent inwardly and flattened to form brackets 64 whereby it may be secured to the sides of the frame. By adjusting the lever 58 the couplers may be brought to the proper elevation so that the draw bar 63'wil1 enter the jaws of said couplers, displace the books 62 and catch behind the latter when the truck H is backed into the loader,v to effect a coupling. Merely by lifting the hooks, the truck may be driven forwardly and disengaged from the loader, the carriage of'whichwill remain supported by the prop 58.

Asxbefore statedthe truck'and carriage are moved rearwardly to load the scoop C. In order to brace the scoop and impart the rearward thrust of the truck frame through the carriage frame to the scoop, triangular braces 65 are secured to the main bars adjacent the bends 24 and 25 so that the lower portions of the upright members of these braces will abut the axle 13 when the carriage is moved rearwardly, thereby imparting the thrust to the bottom of the scoop. The scoop may be used to move under a load, as apile of material; or'it may be disposed at such an angle as to dig into the ground and scoop up a load of dirt. The angular adjustment of the scoop is controlled by adjusting the bolts 44 of the links F in the holes 45 and 46.

It is believed that the co-action of the various elements will be clear from the drawings and the description previously given. However, it is pointed out that when the carriage A is pulled forwardly and the fulcrum bar is swung, that the hangers are swung rearwardly and upwardly, which also causes the main bars 23 to be swung likewise. Since the shackles 33 are slid rearwardly by the struts 32, it is necessary to weld a transverse bar 3% to the undersides of the main bars 23 to arrest the sliding movement of said shackles when the frame is swun upwardly. It will be observed that owing to the fact that the pivot points of the links F on the bolts 44 being offset from the pivot points of the main bars on the bolts 2|, the scoop C will be swung to a dumping position when the linkage frame is elevated.

It is pointed out that the loader when once attached to a truck may be quickly backed into a load which will be expeditiously picked up and elevated and dumped into the truck body K, when the truck is driven forward. The scoop C may be made of sufficient capacity to load the body K at a single dumping operation. When the truck is loaded, it may be quickly detached from the loader simply by lifting the hook 62 and driving the truck away. If the capacity of the truck body is greater than that of the scoop, the loader can be left attached to the truck until the latter is loaded. After the loader is once attached to the truck, it will be operated solely by moving said truck backward and forward and without manual aid.

The foregoing description of the invention is explanatory thereof and various changes in the size, shape and materials, as well as in the details 'of the illustrated construction may be made, within the scope of the appended claims, without departing from the spirit of the invention.

What I claim and desire to secure by Letters Patent is:

1. A loader including, a swingable linkage frame having jointed angular members and longitudinal bars pivoted to the angular members, means for pivotally suspending the angular members of the frame, a loading receptacle carried by the bars of the frame, and a ground-engaging member pivoted to the angular members of the frame and adapted to swing to an upright position to swing said angular members when the suspending means is moved forwardly.

2. A loader as set forth in claim 1, wherein the receptacle is pivoted to the frame bars, and means pivoted to the receptacle and the fulcrum member for swinging the receptacle when the fulcrum member is actuated.

3. A loader including, a swingin frame, means for plvotally supporting the frame whereby it may be swung from a loading position upwardly to a dumping position, a receptacle carried by the frame, a fulcrum member pivoted to the frame and having ground-engaging elements for swinging the frame, and a member adjustably connecting the frame and the fulcrum member for regulating the elevation to which the receptacle is swung upwardly.

4. A loader including, a carriage having a frame supported on ground wheels, means at one end of the frame for detachably connecting it to a vehicle, uprights on the carriage frame, a linkage frame pivotally supported at one end by said uprights, a receptacle at the opposite end of the linkage frame, and a ground-engaging fulcrum member pivoted to the. linkage frame adapted to swing to an upright position for swinging said frame to dump the receptacle when the carriage is moved forwardly.

5. A loader as set forth in claim 4, and means carried by the frame including a prop engaging the fulcrum member for vertically adjusting the carriage frame and supporting it.

6. A loader including, a portable carriage, a linkage frame mounted to swing in a vertical arc on said carriage and carryin a receptacle, a ground-engaging fulcrum member pivoted to the frame adapted to swing to an upright position while remaining in engagement with the ground, means for vertically adjusting supporting the forward end of the carriage, and couplers on the forward end of the carriage adapted to engage the draw bar of a truck when the latter is backed to the loader.

'7. A loader including, a portable carriage, hangers pivotally suspended by said carriage, main bars pivoted to said hangers and extending rearwardly of the carriage, a receptacle carried by the rear ends of the main bars, a groundengaging fulcrum member extending forwardly of the carriage and pivoted at its rear end to said hangers, and links pivotally connecting the receptacle with the fulcrum member.

8. A loader as set forth in claim 7, and struts pivotally connected with the hangers and slideably connected with the main bars.

9. A loader including, a portable carriage, hangers pivotally suspended by said carriage, main bars pivoted to said hangers and extending rearwardly of the carriage, a receptacle carried by the rear ends of the main bars, a groundengaging fulcrum member extending forwardly of the carriage and pivoted at its rear end to said hangers, links pivotally connecting the receptacle with the fulcrum member, struts pivotally connected with the hangers and slideably connected with the main bars, and reach bars pivoted to the fulcrum member at one end and slideably confined on the main bars at its opposite end.

10. A loader as set forth in claim 9 and an adjustable prop carried by the carriage engaging on the reach bar.

11. A loader including, a portable carriage having a wheel-supported frame provided with means for attaching it to the rear end of a vehicle, a swinging linkage frame including elongate side members, means for pivotally supporting the side members of the linkage frame at one end from the carriage frame, a receptacle connected directly to the opposite end of the swinging frame, a ground engaging fulcrum member pivoted at one end to the pivotally supporting means, and side bars pivotally connecting the upper portion of the receptacle with the pivotally supporting means.

12. A loader as set forth in claim 11, and means on the carriage for limitin the upward swing of the linkage frame.

13. A loader as set forth in claim 11, and means mounted on the carriage frame co-acting with the fulcrum member for adjusting the carriage to an elevation to attach it to a vehicle.

14, A loader including, a swingable linkage frame having longitudinal main bars and side links, a receptacle attached at vertically spaced portions to the: bars and links of the frame, a swinging support to which the main bars are pivoted, a. ground-engaging'fulcrum member pivoted at one end to the swinging support at a point spaced from/the pivotal connection of the main bars to saidsupport, and means for pivotally connecting the links with the pivoted end of the groundengaging member.

15. A loader as set forth in claim 14, wherein the receptacle is pivoted to the bars and links of the linkage frame, and means pivoted to the fulcrum member having sliding connection with the main bars for swinging said bars upwardly.

FRANK E. I-IARTSFIELD.

REFERENCES CITED UNITED STATES PATENTS Number Name Date 162,221 Craig Apr. 20, 1875 518,487 Collins Apr. 17, 1894 852,919 Whittemore May 7, 1907 1,341,904 Hubbard June 1, 1920 2,056,476 McDermott Oct. 6, 1936 2,225,787 McDermott et a1. Dec. 24, 1940 2,360,341 Herrick Oct, 17, 1944 2,377,786 Johnson et a1 June 5, 1945

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