Патент USA US2107120код для вставки
Feb. 1, 1938. 2,107,120 w. H. YOUNT EARTH vMOVING DEVICE Filed Sept. 16, 1956 2 Sheets-Sheet l INVENTOR. W/'///'5 /—/. You/7f ‘ w 1. W - ATTORNEY. Feb. 1, 1938. W. H. YOUNT ‘ 2,107,120 EARTH MOV‘iNG DEVICE Filed Sept. 16, 1956 2 Sheets-Sheet 2 Q INVENTOR. //Z//'///'5 /'/. Vaun/ ATTORNEY. v 2,107,120" Patented Feb. 1, 1938 - UNITED STATES PATENT orrlcs» 2.107.120 EARTH MOVING DEVICE Willis 11. Yount, Oakland, Calif., assignor to American Tractor Equipment Corporatioma corporation of California Application September 1c, 1936, Serial No. 101,113 5 Claims. This invention relates to a new, and improved scraper structure and, more particularly, .to an improvement upon that large earth carrier and scraper structure shown in the copending appli cation of'John F. Knapp, Serial No. 58,552 of ‘January 10, 1936, and Robert B. Price, Serial No. 80,726, of May 20, 1936. 1 _ . I The present invention is concerned with an im proved mechanism for controlling the scraper blade elevation and‘ for operating the bowl clo sure- means. While the machines of the afore mentioned applications were successful, the pres ent structure is much more rugged. and, at the same time, simpler in construction. I It is an object of the present invention to sim plify further the operating mechanism for the hearing it connects the other link ends to mem ber it. Another pair of links II are connected at the top of the post by shaft SI and to the upright H by shaft 32. The links 2‘! and "pro vide a parallel linkage connection between the scraper frame and the front truck post 26. _ Wheels 36 are provided at the rear of the frame in pairs, each pair being mounted upon an axis 31, each axle being carried in. the supporting members ll. ‘ 10' ' The‘ bowl ‘ Secured to the frame members i! are suitable side plates 4| . Between these side plates are ex. tended a bottom plate 42 and an arcuate plate 43. 15 At their forward ends these plates are joined to gether and thus provide a lip “to which is at tached a suitable cutting blade 46, bolts 41 being bowl closure means, particularly to the end that the bowl closure means can beoperated by only , usually utilized forthis purpose so that the cut a single cable in a large capacity carrier-scraper. ting blade can bereadily changed or replaced. It is an object of the present invention to sim Upon advancing the scraper over the ground 20 plify the elevating mechanism on a cable oper the cutting blade 48 will cut on and pick up earth, ated scraper structure, to provide a simple and - this earth being deposited upon the arcuate plate yet rugged structure. 2 ' ‘ 43 to be retained therein. ‘ . The invention includes other objects and fea-, Since the‘ point at which it is desired to dump tures of advantage, some of which, together with a load from the scraper may bea considerable 25 the foregoing, will appear hereinafter, wherein distance from the point at which the load is , ' the present preferred scraper structure of my invention is disclosed. In the drawings accom 30 '20 picked up, since transportation of the load may ) result in accidental discharge of a part thereof, panying and forming a part of this speci?cation. I provide means for retainingthe earth in the Figure 1 is a side elevation partly in section of ' howl.‘ This means is shown as comprising two 30 a scraper structure embodying my invention. Figure 2 is a plan view, partly in section. ' . Figure 3 is a section illustrating the detail of construction at the ‘hinge forming point. 35 The frame The scraper of the present invention includes a strong steel frame H made up of a plurality _ of members, usually secured together. by spot 40 welding. This frame includes side member l2, end members It, and aforward'member 14.. This member joins the side members I! and extends forwardly to‘provide a support for hearing It and forwardly extending uprights I ‘l. arms 55 carried upon stub shafts '58 which are in turn carried by brackets 49 on side frame members l2. 'i'hesev arms extend forwardly and provide a hoe-like door structure with transverse plates II and II which are welded between the arms II. It is to be noted that plate 5| engages the cutting blade and thus insures a tight closure _ for the bowl. - To provide for removal ‘of earth carried upon the bowl I support another pair of arms 6! from stub shafts l8 and extend between these arms an ' and gate in the form of a plate .2. His to be noted that the center of curvature of the arcuate plate 43 is the center of'the stub sh'afts 48 and A front truck ll, including an axle ll upon ' that plate 62 will sweep over and wipe-off- earth 45 45. which are positioned wheels 2!, is provided to permit steering of the scraper. A draw bar 22 extends forwardly to ,be attached to a suitable bitch on such a vehicle as a tractor used to propel the scraper. The axle l0 carries a ball member 28 which is received in a socket 24 at the bottom > of a post it. This post extends upwardly and is connected to member It by a pair of links 21 engaged with the post by shaft 28 intermediate 55theendsofthepost. Ashaftllinsertedin upon the plate 43 so that the bowl can be readily ' emptied. The blade elevating mechanism ‘ Means are provided for ‘raising and lowering the frame it so that the position of the cutting blade 46, relative to the earth, can be adjusted; In the form disclosed this means comprises a” pulley structure ll supported upon a pin 12 car 55/ 2 8,107,180 1 ried by rearwardly extending arm ‘II on the post .26. A second pulley structure indicated at." is supported upon the end of member H. A cable II is secured to the frame of pulley ‘II and is extended about the several'pulleys to secure a multiplication in the power applied on cable 18. This‘cable extends over a. guide pulley ‘I‘I carried on one side of post It and about a guide pulley 19 positioned by support II for universal move-_ ment. The pulley extends to a suitable hoist ; 1o which it appears in Pig. 1 with the scraper blade in contact with the earth, the door being raised to the position shown in the dash lines. When the closure means is to be lowered, the operator simply releases. the tension upon cable 85, the weight of the closure means causing it to drop into the full line position and plates ii ‘will be in engagement with the cutting blade 46 while' mechanism, usually a hoist at the rear of a arms I! are above the dirt in the bowl.v If cable tractor. 18 be pulled to bring link pairs 21 and 30 to gether, the blade will be raised above the earth - . The closure and end gate operating mechanism '15 ill and Si being lowered into position. Normally the scraperis operated in about that position in In accordance with this invention, a very sim ple and yet practical form. of cable operating mechanism'is provided for the door and the end sate structure. An offset arm 82 extends rear wardly from the upright I‘! which is carried by 20 the forward part of the frame portion H. The and the load carried. 4 when it is desired to dump the load the opera 15 tor operates the hoist pulling-on cable 85. This results initially in a. lifting of the door or closure means. During the initial movement of the clo sure means the end gate will not be moved. How ever, continued pulling on cable 85 results in 20 arm 82 carries a multi-groove pulley 88 carrying . continued rotation of the arms 45 and rotation a cable 85 which extends ‘forwardly over guide pulley 88 on extension I‘! and through a guide pulley I‘! on the other side of post I! to another guide pulley 88 on extension 8! tea suitable ca ble operating mechanism on the tractor. The cable .85 is extended between the multi-groove pulley 83 and a like pulley It, the end of the cable being secured to the frame adjacent pulley 30 II. The pulley 89 is supported in a link struc ture 80 which in turn is carried by a shaft II on ,the end closure or door. Plates II and ii are so connected that a recess is provided between them. The link structure permits raising of the door 35 to the maximum height, enabling the pulley ll ' to swing out clear of the door as it is raised. It is to be noted that arms ii each include an outwardly extending extension ill thereon and that from each of arms 45 an ear Ill projects 40 over each of the extensions Ill so that arms I! 7 can only be moved a limited distance before ears III engage the extension ill. Thereafter, fur ther rotational movement of arms " about the stub shafts will result in a rocking of the end 45 gate ‘I! over the base of the bowl until ?nally the end gate is in the dot line position shown in Figure l, and the closure means, including arms II, have been moved to the extreme or upper most position in which they appear in dotted so lines in Figure 1. . , of closure 62. This ‘gradual raising of the clo sure means brings it into that position in which it appears in Figure l, well elevated above the bowl and the-closure 82 into a position wherein all-dirt has been swept oil the bowl. During the movement of the end gate the spring has of course been placed under "tension so that, upon the operator releasing the 1cable II, the end gate 62 is returned while the1 weight of the closure means causes it to rotate about the ‘stub shafts and return to the full line position in which it appears in Fig. 1_. The operator usu ally stops the fall of the door when it is in an in termediate position and spaced from the bowl so that earth can be scraped up and gathered in the bowl.‘ _ It is to be pointed out that the load on the dirt moving gate is substantially uniform. Thus when the gate is first moved the load is made up of dirt on the bowl and little if any power is de 40’ manded by the spring. As the dirt is forced out over the cutting edge the dirt load decreases but more power is demanded by the spring. This results in a uniform loading on the cables. The door position enables the operator to judge the operation of cleaning the bowl accurately. I claim: . _ 1. A scraper comprising a bowl, means for dis ' charging dirt therefrom including a gate sup To provide for the return of the end gate I ported above said bowl and movable thereover extend a spring Ill in the frame it transversely . to dischargedirt, thereon, closure means for said on the scraper bowl so as to secure a goodly length bowl hinged above said bowl and movable from thereof. A piston “I engages an end of this abowl closing‘ position to a raised position above spring and to this piston is attached a cable I N. the bowl, said closure means including arms ad 55 This cable isextended to theend gate about suit jacent each side of said bowl, means extending able guide pulleys I" so that when the end gate is from said gate and engaging said arms only after moved forward it is only against the bias of the opening movement. of said closure means, and ' spring so that the spring always urges the and means for moving said gate including a pulley gate to return to that position in whichv it ap carried by said gate, a pulley supported above pears in Figure 1. ' said gate and a cable extended between said Operation , While it is‘ believed that the operation of the ~pulleys. - 2. In a scraper, a frame providing an opening, wheels at the rear end thereof, means supporting structure is relatively clear from the foregoing the front end of said frame, a bowl carried by description, it will be again pointed out upon a - vsaid frame and extending from in front of said pulling of cable ‘ii, a raising and lowering of the wheels toward said frame front end, an end gate cutting blade relative to the edge can be secured for ejecting dirt from'said bowl, a door for clos the cable passing over suitable pulleys provided ing said bowl supported for hinged travel from a > 70 between the frame of the scraper and the post 26, vbowl closing position to a raised position, means 70 to raise and lower the two pairs of links relative supporting said gate over said bowl, a pulley on to each other. ‘ _ _ ' said door, a second pulley carried adjacent said As to operation of the bowl, once the bowl is‘ frame front end, a, cable extended between said filled itis raised relative to the earth, the door pulleys for lifting said door, and means connect 15 or closure means provided by anns II and plates ing‘said gate to said door to move said gate con-J 75 2,107,120 currently with said door at least during a por tion of the travel of said door. 3. In a scraper, a frame having a front end, a bowl mounted on said frame to the rear of said front end, a door for closing said bowl including a bowl engaging portion and a forwardly and up ward‘ly extending portion supplementing said bowl as a dirt carrier, a first pulley on said door adjacent said forward end, a second pulley car ried on said front end above said bowl, a cable 10 extended between said pulleys, and a link hinged on said door adjacent said bowl engaging por tion and interposed between said door and the ?rst pulley to swing said pulley free of said door upon lifting of said door. 7 4. In a scraper, a frame having a front end, a bowl mounted on said frame to the rear of said front end, a door for closing said bowl and mov able from a bowl closing to a bowl opening posi 20 tion, a ?rst pulley carried by said door, a second pulley carried on said front end, a cable extend “ing between said pulleys to lift said door, a gate positioned above said'bowl, and means inter 3 engaging said gate and said door to move said gate with said door-only after initial movement ‘ of said door away from said bowl. 5. In a scraper, a dirt carrying bowl having a cutting blade to cut and deliver dirt to said bowl, 9. door supplementing said bowl and including a blade engaging portion and an extending por tion providing a supplemental bowl portion when said door is in blade engaging position, a gate movable over said bowl to eject dirt therefrom, 10 means connecting said gate to said’door for con current movement with said door at least during a portion of the travel of said door, a link hinged on said door adjacent the blade engaging'portion of the door, said link extending along said door in’a recessed portion of the door, a pulley on the link, a second pulley, means supporting said second pulley elevated above said door in blade engaging position, and a ?exible element trained over said pulleys and movable to lift said door until said link swings out of said recessed por tion. WILLIS H. YOUNT.