US2334010A - Loader - Google Patents

Description

Nov. 9, 1943. 1.. JONES ETAL LOADER Filed Nov. 15, 1941 2 Sheets-Sheet 2 INVENTORJ LrNN JUNEE v Em Emma Patented -Nov. 9, 1943 LOADER Lynn Jones and Guy Blake. Indianola, Iowa, as signors, by mesne assignments, to New Method Equipment Company, a corporation or Iowa Application November 15, 1941, Serial No. 419,311

7 Claims. (Cl. 214-439) The principal object of this invention is to provide a loader that may be secured to a tractor or the like, that is light in weight, eillcient in operation and positive in action.

A further object of our invention is to provide a loader having a scoop or shovel portion thereon that will, when in operation, receive a straight thrust from the rear axle ofthe tractor for a greater power and one which utilizes the inclined plane principle for hoisting the loaded scoop, thereby requiring a minimum of power arrangement and combination of the various parts of the device, whereby the objects contem plated are attained as hereinafter more fully set forth, pointed out in my claims and illustrated in the accompanying drawings, in which:

Fig. l is a side elevational view of our loader secured to a tractor and in a semi-raised posinon.

Fig. 2 is an enlarged top plan view of the forward portion or the loader mechanism and scoop.

Fig. 3 is an enlarged front cross sectional view of the loader taken on line 3-3 of Fig. 2 showing the structure of the slide-lift mechanism.

Fig. 4 is an enlarged side cross sectional view of the dump scoop latch assembly mechanism and is taken on line 4-4 of Fig. 2. I

Fig. 5 is an enlarged front elevational view of the winch and drive assembly of the loader mechanism.

Fig. 6 is an enlarged side elevational view oi thelscoop element in a dumped position.

Fig. 7 is an enlarged iront elevational view of the latch assembly showing the adjustable latch plate.

Fig. 8 is an enlarged side elevational view of the winch-drive assembly.

Fig. 9 is an enlarged perspective View oi the head portion placed on top of the vertical guide tracks i'or permitting an addition to the top of vertical guide tracks.

Heretofoi'e loading mechanisms have been or" generally a type such as the steam shovel, or

the common hand-operated loading scoops. These types were difficult to use and did not lend themselves well to all-around use, being only good for large operations or tor removing dirt or the like. These scoops did not aid a farmer in the everyday problems arising for the removal of dirt, for trenching, for loading manure and the like, and they required readycut dirt by not having sufilcient power, or by not being eflicient enough to cut their own path for the loading of material onto the scoop or container. We have overcome such disadvan tages as will hereinaiter be more fully set forth.

Referring to the drawings, we have used the numeral 80 to indicate a tractor having the rear: wheels ii and rear axle i2 as shown by dotted lines in Fig. 1 of the drawings. It is to such a vehicle that we attach our device which we will now describe. The numerals I3 and i4 indicate two vertical guide track bars parallel to each other and secured to the frame of the tractor. through the medium of the beams it and is respectively. The numerals El and i8 indicate two vertical slides capable of slideiciy engaging the track members it and i5 and having secured thereto a, horizontal cross beam is as shown in Fig. 3 of the drawings. These slide members i! and i8 are further braced by the beams 20 and braces 2!. 0n either end of the beam i3 are the hanger members 22 and 23 having rotaably mounted in the lower portion thereof the rollers 24 and 215 respectively. This whole assembly is capable of sliding on the vertical track members 63 and is. The numerals26 and 2? indicate two beams each having their rearward ends pivotaliy secured to the axle i2 of the tractor it through the medium of the bearing members 28 as shown in Fig. 1. These beams extend through the hangers 22 and 23 rescectively, and are supported by the rofiers and 25 respectively. Pivotally secured to the forward ends of the beams 28 and 27 is a scoop or shovel 29 which may be fitted with tines iii. or a shovel bottom portion 3|. This shovel bottom portion 3i may be extended by the use of removable plates or the like 32 as shown by dotted lines in Fig. 2 of the drawings. Rigidly secured to the rearward portion or" the scoop 2a is a latch bar or like it. The numeral 36 sates a lever member rigidly secured v 3 rearward end. of the secop 23, whose function will hereinaiter be described. We have used the numeral as to a latch hanger pivotaliy secured to a cross beam 36 whi h err-tends between the channel brace members 26 and This latch mechanism has thereon an adjustable plate element 91 which may be vertically adjusted, and which is capable of receiving the latch bar 93 when the scoop is in a normal operative position. The numeral 99 indicates a slide-way rigidlysecured to the side of the member 35 and capable of receiving an operating lever 99 as shown in the drawings. This operting the operator to release the latch 99 and permitting the scoop member to drop down, thereby depositing its load. We have used the numeral 44 to indicate ahead plate capable of being detachably secured to the upper ends of the vertical guide tracks I 3 and I4 and having mounted thereon a pulley wheel 49, an arm 48, and an arm 41 as shown in Fig. 9, of the drawings. The numeral 49 indicates a chain, cable' or like having one end secured to the lever member 34, passing downwardly and around the beam 39 through a suitable housing and thence passing upwardly and having its other end secured to the lower portion of a tension spring 49. The other end of this tension spring 49 issecured to the arm 41. Thenumeral 50 indicates a stop plate capableof being placed on any one of the lengths of the chain 49 and provides a stop when the chain has reached a Dre-determined position.

By this structure, when the scoop 29 is in a raised position, and the rope 49 is pulled, the latch member 39 will disengage the latch bar II, permitting the'scoop to empty its load and assume the position shown in Fig. 6 of the drawings; As the beams 29 and 21 are lowered, the chain member 49 will again pull the scoop 29 to such a position that the latch bar 99 will engage the hole in the plate 31 for retaining the scoop in its normal position.

To provide the functioning means for the device, we have provided a winch assembly which will be described. The numeral indicates a frame member secured to the rearward portion- 0f the vertical guide rails l3 and I4 as shown in Fig. -5. The numeral 52 indicatesa pulley wheel capable of being operated by,the power take-off of a tractor through the medium of a belt or the like. This pulley wheel isrigidly secured to ashaft" which is rotatably mounted in the frame II. The numeral 54indicate's a friction wheel rigidly secured to the shaft 53 within the frame ii. I have usedthe numeral 55 to indicate ashaft. having one end rotatably mounted in the frame BI and its other end extending a brake shoe 6| capable of contacting and holding the transmission wheel 59 when the lever 51 is moved, so that the end of the shaft 55 is in a raised position. When the shaft 55 is in a raised position, the transmission wheel 59 is out of engagement withithe friction wheel 54. The

numeral 92 indicates a sprocket gear rigidly secured to the shaft 59. The numeral 63 indicates a winch or drum mounted on an axle or shaft which is rotatably supported in the frame ii. The numeral 94 indicates a sprocket wheel secured to the winch-drum assembly, permitting this drum to be operated by a chain 65 which extends over the sprocket gear 64 and 62. The numeral 66 indicates a cable having one end secured to the drum 93, extending up and over the pulley member on the top member 44,-

thence downwardly and about a pulley wheel 61 'rotatably mounted on the beam l9, and thence upwardly to the arm 49. The numerals 89 indicate guide members secured to the beam l9 for preventing the-displacement of the cable 81.

Thus, when power is applied to the pulley wheel 52 and the lever 51 is moved, so that the wheel 59 is in contact with the friction wheel 54, the

drum 0: will be rotated, thereby winding the 1 cable about the drum and pulling the slide member or cross beam 19 upwardly. This raises the forward ends of the beams 29 and 21, thereby raising the scoop member 29 to its upper position. As the lever 51 is moved in the other direction,

the transmission wheel 59 will be out of engage-' ment with the friction wheel 54, permitting the weight of the scoop 29 to lower the whole assembly until the lever 58 is moved further in its forward direction, which permits the wheel 59 to contact the brake shoe 8|, thereby permitting the slowing down or stopping of the scoop assembly at any point of itsv elevation.

The practical operation of our device is as follows:

The beams 26 and 21 are'secured at their-rearward ends to the pivotal connection 28, and the beams I 5 and it are secured to the tractor.

'7 These beams are then lowered to the ground so that the scoop portion 29 is adjacent to or touches the earth or the material to be loaded.

The tractor is then run forwardly picking up the material, and when the scoop 29 is loaded, the operator will pull rearwardly on the rod 59, putting the transmission wheel 59 in contact with the friction wheel 94, thereby operating the winch 69, which, through the medium of, the cable 66, will pull upwardly on'the beam l9, causing the slides l1 and It to slide upwardly I on the vertical guides l8 and I4 respectivelyto a position such as shown in Fig. l of the drawings. The operator then pulls on the cable or through a ertical slot 59 and rotatably'secured to a lever member 51 as shown in Fig- 8 of the drawings. This "lever member has one end pivoted to the frame BI, and its other end extending upwardly and having an operating bar 59 secured to its upper end, which extends back to a point adjacent the driver of the tractor for pulley wheel 52. Supported on a cross arm 90 is cord 43, thereby pulling the latch plate 91 out of engagement with the latch bar 83 and permitting the scoop to dump by virtue of the load carried therein to a position as shown in Fig. 6 of the drawings. If the scoop is in its extreme top position or thereabouts, the plate 50 will prevent the chain from going too far through the tunnel loop on the beam 99. To lower the device to its operating position, it is then merely necessary to push-forwardly on the rod 59 so that the transmission wheel 59 is out of .engagement with the friction wheel 54. The weight of the scoop assembly and latching mechanism will cause the whole assembly'to drop until the chain 49 tightens, thereby pulling the scoop back to its normal operating position and forcing the latch, bar 39 into a locked position within the hole inthe plate 31. The assembly 35 has been .retumed to position by the spring 42 when the cable 43 is released by the operator. The entire assembly can be stopped at any point of its downward movement by pushing forwardly on the rod 58, thereby bringing the transmission wheel 59 into engagement with the brake shoe BI and stopping the entire action. While the assembly is being raised, the beams 26 and 21 ride on the rollers 24 and 25, and the pulley wheel 52 is operatively connected to the power take-01f of the tractor through a belt or like. By providing the cross beam I9, guide tracks I! and I8, and the brace rods 20 and 2|, the entire assembly is made rigid with a minimum of weight. The transmission assembly between the power take-off and the winch drum needs only one control to provide the functions of a power driven shaft, a free running clutch, and a brake assembly all within a forward and rearward movement of the rod 58.

When it is desired to extend the height of the assembly, it is merely necessary to add an additional section of guide track l3 and I4 to the upper end. Sufficient cable 66 can be carried on the drum 63 to anticipate such an extension, and the member 44 can be placed on top of the added section to provide the arms 46 and 41 and pulley wheel 45. By using an angular top rail with the vertical guide sections and by using angular supports on the beam 44, the whole device will be centered and held rigidly on the top of the vertical guide tracks.

Thus, it will be seen that I have provided a loader which fulfills all of my objects and presents many more obvious advantages. The device is versatile in its many adaptations, is easily placed on or removed from a tractor, has but two controls to operate, and will perform the function of apower scoop or loader, a carrier and any other operations of a similar nature. The device possesses great power, is extremely light in weight, and is readily adaptable to changing conditions or types of work. In this connection, the latch plate 31 may be adjusted to provide any desired angle to the forward portion of the scoop 29 and obviously any type of scoop or shovel may be employed in place of the type we have shown.

Hereinafter, the assembly shown in Fig. 3 of the drawings and consistingof the guides l1 and 18, the beam I9, cross braces 20 and 2|, hangers 22 and 23, and rollers 24 and 25 will be referred to as the carrier. The friction clutch arrangement 59, Winch'63, friction wheel 54, and attendant mechanism will hereinafter be called the winch operating mechanism. The loader, scoop or shovel assembly 25 will hereinafter be referred to as a bucket element. The chain element 48, spring 49 and plate 50 will hereinafter be called a bucket returning means.

Some changes may be made in the construction and arrangement of our improved loader without departing from the real spirit and pur-- pose of our invention, and it is our intention to cover by our claims any modified forms of structure or use of mechanical equivalents which may be reasonably included within their scope.

We claim:

1. In a' loader, a beam element having its rearward end pivotally secured to the rear axle of a tractor, a vertical guide track secured to the forward portion of the tractor, a carrier member consisting of a cross bar operatively mounted on said guide track and having hangers capable of operatively engaging said beam element, a bucket element pivotally secured to the forward end of said beam, an engaging means operatively secured to said beam, a latch bar on said bucket capable of being engaged by said engaging means at times, a means for manually disengaging said engaging means from said latch bar at times, a winch mechanism operatively secured to said vertical guide element and having a drum thereon, a cable operatively secured to said drum extending through a pulley adjacent the top of said vertical guide element and having its other end secured to said carrier member, a means for operatively selectively connecting said winch mechanism to the power take-off of a tractor by means of a manual control, and a bucket return mechanism including a lever on the bucket and a flexible member and spring secured to the lever and to a stationary part of the loader to cause the bucket to return to loading position when lowered, the bucket return mechanism being capable of returning said bucket so that said latch bar is in engagement with said engaging means when said beam element is lowered by said carrier after said bucket has been released from said engaging means.

2. In a device of the class described, a vertical guide track secured to the forward end of a, tractor or like, a carrier mechanism consisting of a cross bar slidably mounted on said vertical guide track, hanger members on said cross bar, a beam element pivotally secured to the tractor to the rear of said vertical guide tracks and operatively engaged by said hanger members on said carrier, a scoop element pivotally secured to the forward end of said beam forwardly of said hanger element, a winch assembly secured to said vertical guide track in operative engagement with the power take-off of a tractor, a transmission assembly, a means for manually selectively engaging said transmission assembly to said winch drum assembly at times, a cable operatively mounted on the drum of said winch assembly extending up and over the end of said vertical guide track and having its other end secured to said cross bar for permitting the raising of said cross bar onsaid vertical guide track when said winch drum assembly is connected through the transmission to the power take-off of a tractor, a latch mechanism operatively mounted on said beam and capable of holding said scoop element in rigid alignment at times, means for manually disengaging said latch mechanism from saidscoop for permitting said scoop to pivot at times, and a return mechanism having one end operatively secured by spring means to said vertical guide track and its other end secured to said scoop element through a fixed pulley for returning said scoop element into engagement with said latch element while said beam and said scoop are being brought to a lowered position by said carrier.

3. In a device of the class described, a vertical guide track secured to the forward end of a tractor or like, a carrier mechanism slidably mounted on said vertical guide track, hanger members on said carrier, a beam element pivotally secured to the tractor to the rear of said vertical guide tracks and operatively engaged by said hanger members on said carrier, a scoop element pivotally secured -to the forward end of said beam forwardly of said hanger element, a winch assembly secured to said vertical guide track in operative engagement with the power take-oi! of a tractor, a transmission assembly, a means for manually selectively engaging said transmission assembly to said winch drum assembly at times,

a cable operatively mountedon the drum of said winch assembly extending up and over the end of said vertical guide track and having its other end secured to said carrier for permitting the raising of said carrier on said vertical guide track when said winch dmm assembly is connected through the transmission to the power take-of! of a tractor, a latch means secured to said scoop element, an engaging means operatively mounted on said beam, an adjustable catch element on said engaging means capable of contacting said latch assembly on said scoop for holding it"in rigid alignment at times, an operating lever secured to said engaging means for permitting the manual disengagement of the engaging means from said latch assembly, a means for yieldingly returning said engaging means to an operating position, and a means for returning said scoop element to a position where it will be engaged by said engaging means when said beam and said scoop are brought to a lowered position.

4. In a device of the class described, a vertical guide track designed to be secured to the forward portion of a tractor, a carrier mechanism opera tively mounted on said vertical guide track, beam members having their rearward ends pivotally secured to the rear of a tractor and capable of being raised by said carrier at times, a bucket scoop operatively secured to the forward end of said beam members, a winch assembly secured adiacent said vertical guide tracks and comprising, a friction wheel capable of being operatively connected to the power take-off of a tractor, a transmission wheel rotatably mounted adjacent said friction wheel, a lever member pivotally secured to the shaft of said transmission wheel, a brake shoe adjacent said transmission wheel, a drum element in operative engagement with said transmission wheel, and a cable having one end secured to said drum element and the other end in operative engagement with said carrier;

said transmission element being placed in engagement with said friction wheel when said lever member is moved in one direction being out of engagement with said friction wheel when said lever is in a neutral position and said transmission wheel being braked by said brake shoe when said lever is in its other extreme position for controlling the movement of said drum.

5. In a device of the class described, a vertical guide track designed to be secured to the forward portion of a tractor, a carrier mechanism operatively mounted on said vertical guide track, beam members having their rearward ends pivotally secured to the rear of a tractor and capable of being raised by said carrier at times, a bucket scoop operatively secured to, the forward end of said beam members, a winch assembly operatively secured adjacent said vertical guide tracks and selectively operatively engaging the power take-off of a tractor, a means connecting said winch assembly to said carrier for moving said carrier on said vertical guide tracks, a means' for rigidly securing said bucket scoop .in position relative to said beam members at times, a lever for manually disengaging said securing means for permitting said bucket scoop to Pivot on said beams at times,.andareturn mechanism consisting of a lever on the bucket scoop and a flexible member anchored to the tractor capable of returning said bucket into engagement with said securement means when said carrier is brought to a lowered position. 6. In a device of the class described, a vertical guide track designed to be secured to .the

forward portion of a tractor, a carrier mechanism operatively mounted on said vertical guide track, beam members having their rearward ends pivotally secured to the rear of a tractor and capable of being raised by said carrier at times, a bucket scoop operatively secured to the forward end of said beam members, a transmission element adjacent said vertical guide members and capable of being selectively engaged by the power take-off of a tractor at times, a means for operatively securing said transmission element to said carrier for permitting said carrier to be raised on said vertical guide tracks when said transmission element is in operative communication with the power take-off of a tractor; a means for releasing said transmission at times,

a releasable latch mechanism for securing said to said bucket scoop for returning said bucket scoop to a latched position when said beams are lowered by said carrier.

7. In a tractor mounted loader, a side frame secured to the sides of the tractor and extending forwardly therefrom, a vertical frame secured to the forward end of the side frame, a winch mounted in the verticalframe, the winch including a drive pulley mounted for vertical movement, a brake shoe mounted on one side of the winch frame, a pulley for driving the drive pulley mounted opposite the brake shoef. control means for positively moving the drive pulley up and down to selectively drive the drive pulley or apply the brake-shoe to the drive pulley, a scoop mounted for vertical movement with reference to the side frame and vertical frame, a cable

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