Патент USA US2406300код для вставки
All‘g- 20, 1946. R. 6. LE TOURNEAU 2,406,300 S‘CRAPER Filed June 18, 1945 4 Sheets-Sheet 1 > INVENTOR R. G .LeZbunacau BY M V'iUZl-L I ATTORNEYS’ Aug‘. 20, 1946. .R. G. LE TOURNEAU SCRAPER 2,406,300 ' Filed June 18, 1945 4 Sheets-Sheet 2 NNMN Wm. INVENTOR ‘ R, G’. LéTaurneau. :m'onusys Aug? 20, 1946- R. 6. LE "TOURNEAU - 2,406,309 SCRAPER Filed June 418, 1945 4_ Sheets-Sheét 3 ' INVE'NTOR R. G ZleTourneau $114.15; m Aug- 20, 1945- R. G. ‘LE TOUIYQNEIAU 2,406,300 ‘ SCRAPER Filed June 18, 1945 4 Sheets-Sheet 4 4 ‘INVENTOR 2?. G LeTouz-neaw M" 11ml; ATTORNEYS 2,400,300 Patented Aug’. 20,1946 UNITED STATES PATENT OFFICE SCRAPER Robert G. Le Tourneau, Peoria, 111., assignor to R. G. Le Tourneau, Inc., Stockton, Calif., a cor poration of California Application June 18, 1945, Serial No. 600,154 6 Claims. (Cl. 37-126) 1 Z lengthwise of the direction of travel, and includes This invention is directed to an earth working implement, particularly an earth scraper of the carry type, i. e. a scraper operative to dig, load, carry, and discharge earth. One of the objects of this invention is to provide a carry-type scraper which is self-propelled. transversely spaced, substantially horizontal side beams S. The side beams 6 are inwardly facing channels, and a substantially rectangular car riage 1 is supported from the side beams 6 for movement lengthwise of the main frame, by means of rollers 8 which engage and ride in the channels of said side beams 6, Side thrust rollers 9 maintain proper ‘alinement of the carriage, 'l and It is also an object of this, invention to con struct a self-powered carry-type scraper which is designed to be loaded, selectively, by movement of prevent binding thereof in the channeled side the implement resulting from wheel'traction, or 10 by independent powered-movement of the bowl The main frame 5 is of substantially greater assembly relative to a main supporting frame, or length than the carriage 1, whereby the latter is‘ loaded by a combination of wheel traction and capable of a relatively long travel within said beams. ' I ‘ - ‘ said independent powered movement of the bowl 15 assembly, Another object of the invention is to provide a self-propelled carry type scraper which com prises, with a tractor coupled in unitary draft ' * ' ing frame’ assembly II which carries an axle l2, mounted on and movable lengthwise of the main frame; a wheel supported bowl assembly ?xed beneath and movable with the carriage; power means operative to move the carriage alongr the main frame; and a front apron suspended from the main frame and adapted to cooperate with . ' A forwardly opening earth receiving-bowl’ I0 is i’ disposed beneath the carriage 1-, and at its rear ' end said bowl is ?tted with a rearwardly'project- ‘ relation to a trailing main frame, a carriage the bowl assembly at the front. main frame. ' on opposite ends of which are mounted the rear ground engaging, transversely spaced wheels, l3 ' of the‘ implement.‘ The frame assembly H in cludes an upstanding portion 54 pivotally con nected at its upper end to the. carriage ‘I at the rear for ‘swinging movement about‘the axis of the rear rollers 8. ' ‘ _ ' ‘Adjacent its forward end and on opposite sides the bowl I0 is suspended from the corresponding ‘end of the carriage 'l by lift cables 15 which are 30 reeved between sheave blocks IE on the carriage for which it is designed. , and sheave blocks H on the outsides of the bowl. These objects are accomplished by means of From the sheaves IS the pull leads l8 of. the cables such structure and relative arrangement of parts l5 extend rearwardly, pass about direction as will fully appear by a perusal of the following ohanging sheaves I9, and thence extend laterally A further object of the invention is to produce a simple and inexpensive device, and yet one which will be exceedingly effective for the purpose speci?cation and claims. inwardly to oppositely wound connection with In the drawings similar characters of reference 35 the cable drum 2!! of an electrically actuated re indicate corresponding parts in the several views: versible power winch, indicated generally at 2|,‘ Figure l is a side elevation ‘of the implement in mounted on the carriage 1 adjacent its forward carrying position. ~ end and substantially centrally of its sides.» The Figure 2 is a longitudinal sectional elevation of 40 electric power winch 2| is actuated, as are the the implement in diggingand loading position. other hereinafter described electric power winches " Figure‘ 3 is a similar view but shows the imple jof the implement, by means of an operatorcon ment in discharging position," » v Figure 4 is a plan view of the implement. Referring now more particularly to the char acters of reference on the drawings, the imple ment comprises a tractor, indicated in part at l, in Fig, 1, and which tractor is preferably of the two-wheel “Tournapull” type, supported by a pair of transversely spaced ground engaging driving trolled circuit.v The electric power winch :21, together with the other ‘similar winches included vin the'implement, are not onlyreversible but are ,‘nor'mally brakedagainst rotation of'the drumie. . The structural details‘ of the electric power winches form no part of the present invention' 1 and any suitable type may be employed, f ' The unit comprising the carriage ‘l and the wheels 2. Adjacent its rear end the tractor l is 50 wheel mounted bowl assembly pivotally con ?tted with a combination draft coupling and nected thereto, as above described, are arranged power steering unit, indicated generally’ at 3, to be power actuated in a forward direction and» which is connected, as at 4, centrally with the forward end of a trailing mainframe 5. The main frame 5 is of open type, elongated 56 ,lengthwise‘of’ the frame 5_by means of the fol lowingmechanismzr . - > .. , V‘ . 2,408,300 3 A pair ofv reversible electric power winches, in dicated at 22, are mounted on the main frame 5 may selectively brake the tractor wheels 2, or the rear wheels i3. ‘ at the front and include‘ cable drums 23 each dis Operation ‘posed on a transverse axis and substantially galined with the corresponding side beam 6. In operation of the above described scraper it Cablesft lead from the drums 23 rearwardly ‘ about upstanding‘sheaves may be'loaded independently of wheel traction, on the carriage at as follows: ' . the front and I adjacent the corners. After pass ‘ ing about the sheaves 25 the cables Zc'l extend for ‘ i The apron 255 is partially ‘raised by the cable 33 and the bowl “flowered by the cables !5 until wardly to an anchor on the frame. While the the blade 3! is in ground engagement. There above cable system is shown for the purpose of . 10 : the tractor l is driven. forwardly to a cer clarity as including only two lines’, a multiple; ' ‘ '- after tain extent, w'hichcauses the carriage '5, together line block and tackle system may be employed if greater power is desired.‘ When the carriage with the bowl Id, to move rearwardly relativelyv ‘to the main frame 5; the power winches 22 being actuated at such time to permit the'cables 24 to pay out as s'aidcarriage retracts. With the bowl It in such retracted and lowered position, the apron 25 is dropped into ground. engagement, as shown in dotted lines in Fig. 2, and in which fig 1'! is adjacent the rear end of the main frame 5 ‘the electric power units 22 can be actuated to cause forceful forward movement of said car' ‘ lriage, together with the bowl Hi, relativeto said fzmain frame. ' Ahead of the bowl to ' adjacent the forward ure the bowl is also shown in its retracted and ierndr‘o?'but below the main frame 5, the imple~ digging position. The operatorthen locks the ‘ment includes a‘ front apron 2E adapted'to co~ front wheels 2, permitting the rear wheels 3 to operate in closing relation with the forward end‘ remain unbraked, whereupon the electric power ,of the bowl iii when the latter is inian advanced winches 22 are actuated in a direction to pull in ‘position, as shown in Fig. 1;" themount for the‘ 25 the cablesiiil _This causes the carriage l to 1apron 26 comprising the following: > forcefully advance, carrying the bowl i9 with it. ‘ A pair of heavy-duty transversely spaced sup As the bowl advances the lads 3i digsinto the porting arms 2‘? are fired inyconnection with the earth andthe dug earth flows into said bowl; apron‘ 26 at opposite ends, and extend rearwardly the bowl continuing such advance until it comes therefrom alongside the bowl id. Adjacent the so into closingrelationship with the lowered apron rear end of the bowl, whenadvanced. and to the 2P5. Thereafter both, the bowl and apron are outsides thereof the supporting arms 2?’ are piv~ raised to loadcarrying position, as shown in Fig. ‘otedya-t their rear ends, as at 2%, to the lower l, that the load may be transported to the end of rigid bracketsZQ which are ?xed in con ‘- point of discharge. _'lt7l'1en the vimplement reaches nection with and’ decendfrom the side beams t; 1' such point the apron 25 is opened and the end of the main frame the: ends ‘ Intermediate their gate is advanced, as shown in Fig. 3, for the the supporting arms 2'?! pass between the lift' purposeof discharging‘the load. from the bowl. cables 15 and the adjacent sides of bowl ; ‘ ‘lij‘his discharge maybe accomplished with the ' lowering ‘movement of said below fully , scraper moving in order to properly ‘spreadithe closed position of the apron 2% relative to the an bowlv is being nreventedeb'y stop blocks as so». .' if his desired to load the scraper partly by cured to thesides of the bowl'aind onto which wheel ,‘traction and partly by ‘independent pow~ load. stop‘ blocks the sheaves i l are secured.- > ’ At its forward edge the‘ bottom of the bowl is: is ?tted with a cutting ordigging blade-ii, while 45 '1 The apron 2E . ' ' ' r r , .. ‘ ered movement of, the carriage l‘ and bowl it, the I e isas follows: the apron 215 is an elevated position, and ; the bowl iii retracted and lowered to dig-‘ at its lower and rear edge the apron 25 is ?tted with a complementary hladefilh . ngp'osition, the implement is driven forward vertically adjustably suspended through the medium of the drive wheels ' from the main 1 until frame: by means of a’cable 33' the blade 5i has ?lled the bowl if} to the extent apron at the front and adjacent 5o of the tractive capacity of said wheels .2. There-v its lower and thence extendin upwardly after the forward movement of the irnpiement is in guided'relation abouts, cab-1e 352 of a ‘stopped; the brakes on wheels 2 are set; the apron electric power winch mounted, on 25 lowered; and the carriage l’ and bowl to ad vthe main frame 5 adjacent‘ its forward end and vanced the remaining distance to'said apron" by. substantially centrally of the sides thereof. ’ ‘the independent power means comprising the V iThe bowl lEl'is provided ‘with a forwardly mov electric power winches 22 and’ cables-724i, which secured to 7 , reve ’ able end gate 36 normally disposed in the rear forcefully 'advance'the carriage ‘in ' the manner . end of. the bowl and forming the back wall thereof.‘ However, this end gate is mounted for previously described.‘ "When the load. has been acouiredit is transported and discharged in the powered forward movement in the bowl and to discharge ajload therefrom, generally as follows: ‘A frame ‘structure 31 extends rearwardly from the end'gate, 36 and includes ar'cluster of guide rollers 33 cooperating ‘with a7 horizontal guide I‘ beam 239' in'a frame assembly ii. . Theend gate» 36, together with its franie'structurciil, is ‘power same manner previously described. ' a ' It will, also be‘evident that with the bowl to in an advanced position, the apron and said ‘bowl 1 y also housed in thesame ‘manner as a conventional carry ‘ typescraper which loads '7 solely by wheel traction. ' advanced and retracted from a reversible electric 1 power Winchell mounted'in thev frame assembly i l. and including an end gate advancing cable sys- ‘ . tern 4i and an end gate ‘retracting cable system " t2, bo-th’of which‘ systems connect in operative e “from the foregoing description it will be read~ seen that there has been produced’such a de vice as substantially ful?lls the objects of the in ven 1 ‘ <1 set forth in‘ the appended claims. lethis specification describes in detail the pre nt'and preferred construction of the device, relation with the cable drumtiofthe. winch 4d.’ " ' st , ihfpractice such deviations from such detail ,The ‘wheels 2 of the tractor, as well as the ‘may he rose d to as do not form a departure rear wheels l3 of the implement, include brakes (not shown), by means of " which 5the operator as from the sp t of the invention, ‘as defined'by said claims; » J 7. . 2,406,300 5 , Having thus described the invention, the fol lowing is claimed as new and useful and upon which Letters Patent is desired: ' l. A self-propelled scraper comprising, in uni tary relation, a tractor, an elongated mainframe disposed above the ground coupled to the tractor in draft relation, an earth digging and carrying bowl unit extending below. the -main frame, means mounting the bowl unit in con nection with the main frame for relative length wise movement, power means between the frame and bowl unit operative to effect such movement of the latter, and a front apron mounted in con means extending between the carriage and bowl unit. 4. A self~propelled scraper oomprisingyin uni~ tary relation, a tractor, an elongated main frame disposed above the ground and coupled to the I tractor in draft relation, a carriage} mounted on the main frame for longitudinal sliding move ment, an earth digging and carrying ‘bowl unit extending below the carriage, a frame structure 10 on the bowl unit secured to the carriage whereby the bowl unit moves with said carriage, ground. engaging wheels on the bowl unit, and power means connected between the main frame and carriage to effect such movement thereof; said nection with the frame and disposed in coopera tive relation ahead of the bowl unit, the bowl 15 frame structure mounting the bowl unit for ver tical pivotal adjustment, and suspension means unit being open at the forward end and said end extending between the carriage and bowl unit. being closed by the apron when the bowl unit is 5,. A self-propelled scraper comprising, in uni moved lengthwise into engagement therewith; tary relation, a tractor, an elongated main frame said front apron including transversely, spaced side arms projecting rearwardly on opposite sides 20 disposed above the ground and coupled to the '7 tractor in draft relation, a carriage mounted on of the bowl, rigid depending brackets on the the main. frame for longitudinal sliding move— main frame to which said side arms are pivotally ment. an earth digging and carrying bowl unit ex attached at the rear, and, vertically adjustable tending below the carriage, means mounting the means suspending the apron from said main frame. 2. A scraper as in claim 1 in which the bowl unit is pivoted in connection with said mounting means for verticaladjustment, and liftcables depending from said mounting means for attach 25 bowl unit for lengthwise movement with the car rage, power means connected between the‘main frame and carriage operative to effect such sliding movement of the latter,’ a vertically adjustable front apron suspended from the main frame in cooperative relation ahead of said lengthwise ment with the bowl on opposite sides,‘ the side movable bowl unit, a forwardlymovable end gate arms of the apron extending between the liftca in the bowl unit, and end gate actuating means bles and adjacent sides of the bowl, and stop mounted for movement with the bowl unit. members on said sides of the bowl disposed to lim 6., A scraper comprising an elongated frame it relative lowering of the side arms below a pre 35 disposed above and for movement along the determined point. ground, a wheel-supported ‘earth digging and 3. A self-propelled scraper comprising, in uni carrying bowl unit extending below the frame, tary relation, a tractor, an elongated main frame means mounting the bowl unit in connection with disposedabove the ground and coupled to the the frame for relative lengthwise movement, pow tractor in draft relation, a carriage mounted on 40 91' means between the frame and bowl unit‘ opera the main-frame for longitudinal sliding move tive to effect such movement of the latter, and a ment, an earth digging and carrying bowl unit front apron mounted in connection with the extending below the carriage, a‘frame structure frame and disposed in cooperative relation ahead on the bowl unit secured to the carriage whereby of the bowl unit; the bowl unit being open at the ‘the bowl unit moves with said carriage, ground. 45 forward end and said end being closed by the apron when the bowl unit is moved lengthwise engaging wheels won the bowl unit, and power into engagement therewith; the bowl unit and means connected between the main frame and front apron being secured in connection with said carriage to effect such movement thereof; said mounting means and frame, respectively, for in frame structure being pivotally attached to the dependent and power actuated vertical adjust carriage whereby the bowl unit is vertically 50 ment. swingable, and vertically adjustable suspension ROBERT G. LE TOURNEAU.