US2207016A - Scraper - Google Patents

Description

C. LE BLEU July 9, 1940.

SCRAPER Filed Feb. 10. 1937 5 Sheets-Sheet 1 INVENTOR.

'ATTORNEYS July 9, 0.

C. LE BLEU SCRAPER Filed Feb. l0, 1937 5 Sheets-Sheet 2 v m K R E 2 2% www QB IN VEN TOR ATTORNEY July 9, 1940. c. L E BLEU SCRAPER Filed Feb. lO, 1957 5 Sheets-Sheet 5 july 9 w40- c. LE BLEU 2,207,0l6

SCRAPER Filed Feb. l0, 1937 5 Sheets-Sheet 4 FIG. S

/N VENTO/C m. 1/wf@ zi @c/J A TTU/(NE Y C. LE BLEU July 9, 1940.

S CRAPER Filed Feb. 10, 1937 5 Sheets-Sheet 5 Nm wm hk n Nv A TTORNEY Patented July 9, 1940 UNITED STATES PATENTv OFFICE sonnen charles Le Bleu, nos Angeles, onu. Application February 1o, 1937, .serial No. 125,036 13 claims. (ci. 379-126) This invention relates to scrapers for excavatv ing, transporting, leveling and grading.

This invention is an improvement upon the invention disclosed in my pending application Serial No. 111,884, filed November 20, 1936, in which I disclose; a scraper having a main carrier, an auxiliary carrier, and means operably associating said carriers whereby when means are applied to the main carrier to discharge same the main carrier will act upon the auxiliary carrier, through associating mechanism, to control the discharging of the auxiliary carrier.

An object of this present invention is the provision, in a scraper having a main carrier and an auxiliary carrier, of novel means applied to the carriers to control the discharging of same successively.

Another object of this invention is the provision, in a scraper having a main carrier and an auxiliary carrier, of an independent control means for each carrier and means for actuating said controls simultaneously for controlling the discharging of said carriers successively.

Another object is the provision, in a scraper having a main carrier and an auxiliary carrier,

' of an independent control means applied to each carrier, and a common means for actuating said controls simultaneously to control the discharging of said carriers successively.

Still another object of this invention is the provision, in a scraper having a main carrier and an auxiliary carrier, of a control cable for each carrier and a common winding means for winding up said cables simultaneously.

Another object is the provision of a scraper including a frame including side walls, a main bottom tlltably disposed between the side walls and a scraper rigid with said main bottom for scraping up materials, said bottom and said side walls combining to form an earth carrier adapted to receive scraped up materials.

Still other objects, features and advantages of this invention will be apparent .to those skilled in the art upon detailed perusal of the accompanying drawings and the following specifications wherein I exemplify and describe my invention, but it is to be understood that my invention is susceptible to modication in the combination, correlation and construction of parts, members and features, and has a Wide application in the design and construction of Scrapers without departing from the spirit of the invention as delined in the annexed claims.

In the drawings similar characters of reference designate corresponding parts in the several views.

In the drawings:

Figure 1 is a fragmentary plan view of my invention showing various parts in transporting postion.

Figure 2 is a longitudinal section, taken on broken line 2-2 of Fig. ,1, with parts in elevation.

Figure 3 is a side elevation partly in section showing the various parts in discharge position.

Figure 4 is a longitudinal section taken on line 4-4 of Figure l, showing the various parts in loading position.

Figure 5 is a fragmentary side elevation in the discharge position facing in opposite direction to Figure 4.

Figure 6 is an enlarged fragmentary plan view partly in section showing the winding drum on the rear end of the scraper. Figure 6 faces in the direction of Figure 5.

Figure 7 is an enlarged plan view, partially in section, of the large transverse beam and associated parts disposed forwardly of the carriers.

Figure 8 is a front elevation, partly in section, of Figure 7. v

Figures 9 and 10 show two views of the latch bar for securing the cable and sheave assembly against movement.

Referring now to the characters of reference on the drawings, the rigidly constructed frame is supported from the ground at itsrear end by rolling supports or wheels I0 journaled one on each end of an axle II secured to the underside of beam I2. The frame comprises short beams I 3 rigid at their rear ends with beam -I 2 and at their front ends with transversely extendingbeam I4.

Beam I4 is rigidly secured at its ends to side walls I5. Side walls I5 project rearwardly above beams I3 and a shaft I6 is rigidly secured at its ends each to a side wall I5 at the upper rear ends thereof. Uprights I'I are rigid at their lower ends with beam I3 and at their upper ends with shaft I8. A pair of forwardly extending members I8 are rigidly secured each to a side wall I5 and extend from the lower rear corner of the side walls to the upper front corners thereof and thence forwardly to rigid connection each with an end of a hollow transversely extendingbeam I9. Beam I9 is provided with a pair of forwardly extending spaced apart members 20. Rollers 2|, see Figure 2, are disposed between members 20 and suitably journaled on shafts thereon. Disposed between members 20 and in engagement at its front and rear edges with rollers 2l is an upstanding post 22, see Figure 2. Thus the front end of the frame is disposed for vertical movement on post 22. The lower end of post 22 is swivelly supported on a pony truck 23, said pony truck being provided with a draft beam 24 adapted in a conventional manner at its front end for connection to a draft device such as a tractor 25.

The front end of the main frame being supported for vertical movement on post 22, means are provided for imparting said movement as follows: members 20 are provided with a pin 28,

sheaves 21 and 29, thence forwardly from sheaves 29 to and then downwardly about sheave 30 to and about a direction change sheave 32 swivelly mounted in a conventional manneron the front ends of members 2U, and thence,forwardly to winding drum 33 to which it is secured, see Figure 1. Thus operation of drum 33 will actuatecable 3| `so as to raise `and lower the main supporting frame@A y 'e j Disposed between the spaced apartside Walls I5is'` a maincarrier 34. The mainkcarriercomprises' thebottom34- andthe back wall 35jwhich is a continuation 'of the'bottom 34 in an upwardly and -rearwardly direction to form the back wall wall 35 is aV 35. Secured tothetop edge of back transverse beam 36e'xtending across the width of themain carrier. vA pair of brace bars 31 are rigidly secured one to eachside of the main carrier and are secured at their upper endsto cross beam 36. The front ends of brace bars 31 are pivotally mounted each to a side wall I5'as indicated at 38, Figures 2, 3, 4 and 5. The front edge of bottom 34 is providedl with a scraper 39 which engages the surface to be removed, which material is loaded and dumped from the apparatus. The forward edges of brace bars 31 are beveled as indicated at 40 to facilitate the passage of materials into the carrier andthe discharge of material therefrom. The main carrier is provided with projections 41 which are adapted to rest on beam I4, see Figure 2, and support the rear` end` of the main carrier when the same is in lowered position.

An auxiliary carrier 4| is` associated .with the main carrier and comprises bottom plates 42, side walls 43 and bent arms 44 all assembled as a rigid structure, the rear ends of arms 44 being pivotally mounted on brackets 45 at 46,'said'brackets 45 being secured to the top edge of sidewalls I5. Thus the auxiliary carrier 4I is disposed for swinging movement in a1 vertical plane and adapted to be loadedin common with the main carrier.

`Means arev'provided for controlling the dis-V charge of the main carrier 34 as follows: Cross beam 36 is provided with brackets 48 carrying a pin 49 having sheaves 58 journaled thereon. The large beam I9 carries brackets 5| provided With a pin 52 having Jjournaled thereon sheaves 53, see FiguresV 1 and'5. The front end'of the members 20 are provided with a horizontally projecting trunnion, having journaled .thereon sheave 54, seeFigure 1. Shaft I6 at the rearv end of the scraper,is provided with screw threads 55 which terminate at 56. Mounted for limited rotation on shaft I6 is a winding drum 51 threaded which is interiorly grooved at vr58 so as-to receive the threads 55-956 formed `on the shaft, the thread vgrooves 58'in the winding drum terminating adjacent one end so as to form a stop 58' as illustrated in Figure `6. In Aviewing Figure 5 which'face'sM in the same direction as Figure 6, it will be seen that winding drum 51 rotates in a clockwise direction for winding up cable and in counterclockwise direction for `un` winding cable.l Figure 6 shows kthedrum 51'in wound-up position'fwith respect to' the: cableV thereon. Thereforeit will 'be' note'd that'wind" further facilitated by ing drum 51 has limited rotational movement on shaft I6 since when the drum has been screwed onto shaft I 6 to the point where the end of thread 56 contacts thestop 58 no further unwinding movement, can""take place.; lThe pitch -of the threads on shaftv I6 and 'in the grooves drum 51 is substantially equivalent to the pitch of the winding of cable on the drum 51. A coil spring 5,9.encircles shaft I6 and is secured at one end to the drum 51v at 60 and at the opposite end to the stationary frame member 6I at 62. Thus thespring 59 will' be compressed and wound up duringthe rotational movement of the drum 51, andy will -impart winding movement to drum 51 when said drumvis free, to turn in clockwise direction- Viewing Figures 1,-2, 3,' 5 andcja,

cable 63 is secured at oney end, to winding drum 511at and after being wound thereaboutpasses.

forwardly and then back andforth aboutsheaves 50 and 53 andthencel'forwardly to and downwardly about sheave 54 and'thence downwardly 26 and thence 4forwardly to`winding drum 65.

Thus windingdrum 65nmay be operated to wind up cable 463 to dispose the main carrier 34 in the discharge position of Figure 3. 'I'he function ofthe winding drum 51 and associated parts during the dumping operation will bedescribed after the arrangement of the auxiliary carrier has been described.

The auxiliary carrier 4| outer end with a bracket |56 having sheave means 68 journaled thereon. The large cross beam I9 carries brackets |59y through which extends a pin 'l'having journaled thereon a pair of sheaves 1I. Journaled on a stop pin in the front end of members 20 is a sheave 12. A pin 13 extending through cross beam I9, and carries a pin 13, see Figure 7, having journaled thereon a plurality of sheaves 14.*A movable yoke 15 is disposed within the cross pin I9 andis provided with a pin 16 having journaled there' on a plurality of sheaves 11. with a stem portion 18 having a stop member 19 rigid therewith.- A latch bar 80 straddles the stem 18 and is adapted toengage stop member 19 and secure said yoke against movement. Latch bar extends upwardly through a retainer r`8| secured to cross beam I9 and is pivotally connected at its upper end' to an arm 82 which in Lturn is pivotally connected at its front end at 83 to the'upper end of brackets 84 secured to cross beam lI 9." that the rear end of arm l|32 may be raised see Figure 3 and 5, to withdraw latch bar 80 from engagement with stem 18 and stop 19 to permit free movement of yoke 15. the lower endof latch bar 85 to facilitate re-'latching action when yoke 15 returns to Anormal is provided at its carrying a pin 61` Yoke 15 is formed Thus it is s een' It will be noted that".r 80 is beveled as at- 19. Figures 9 and 10 show two views` of latchI bar 80.

Secured to one end of the large ycross beam I9 are brackets 86 carrying a pin 81 having Secured to the"v journaled thereon a sheave 88. front wall of cross beam I9 is a tubular member |19.` Arranged in tubular member'89 is a coil spring 90. Disposed in one end of coil spring 98 is a plug 9|. Attached to plug 9| at this end is a cable 92 extending outwardly through an opening inthe end "oftubularmember 89 then passing about sheave wand thence through an opening in the end of cross beam I9 to a connection with yoke 15. Thus, the movement of yoke 15 toward sheaves 14 will result in compressing spring 90, and when yoke 15 is released spring 96 will return same to its normal position at the end of beam I9. A cable 93 is anchored at an end to pin 16, see Figures '7 and 8, and passes thence back and forth about sheaves 14 and 11, thence upwardly to sheave 1I, thence back and forth'about sheaves 1l and 68, thence forwardly to and downwardly about sheave 12 thence about a direction change sheave 94, and then forwardly to winding drum 65. Thus, it is seen that winding drum 65 may be operated to wind up cable v93 to control the discharging of the auxiliary carrier 4l.

The operation of the invention will now be described.

Note that cables 63 and 93 are both wound on winding drum 65 to control the operation of same successively. The auxiliary carrier is to be discharged rst, followed by the discharging of the main carrier.

Being in the loaded and transporting position indicated in Figure 2, winding drum 51 is in the position indicated in Figure 6, and movable yoke 15 and related parts are in the position indicated in Figures '1 and 8, and to discharge the carriers winding drum 65 is operated to wind up cables 63 and 93 simultaneously. Since yoke 15 is latched against movement toward sheaves 14 by latch bar 80 the auxiliary carrier will begin to move upwardly as soon as drum 65 begins to rotate. But this is not true regarding the main carrier even though cable 93 is also being wound simultaneously with cable 63, but instead, as the auxiliary carrier 4I is moved upwardly by cable 63, cable 93 will unwind iirst from drum 51 before the main carrier begins to move. This unwinding of drum 51 will bring the thread end 56 to the end of the groove 58 and since the drum can no longer unwind the main carrier will begin to tilt forwardly about pivot 38.

At this point in the operation, the auxiliary carrier 4l will have moved upwardly to the position indicated in Figure 3. In this position of the auxiliary carrier it will be noted that the rear end of arm 82,'see Figure 3, has been engaged by the auxiliary carrier and raised which action frees the yolk 15 and sheaves 11 for movement toward sheaves 14 which movement will now take place as the winding drum 65 continues to wind up cables 63 and 93, and the main carrier con- .inues to tilt forwardly. When the main carrier s has reached the position indicated in Figure 3 the dumping operation is completed.

From the position indicated in Figure 3 the carriers may be disposed in the relative positions indicated in Figure 4 by releasing the winding drum 65 and allowing cables 63 and 93 to unwind simultaneously therefrom until the carriers have assumed the position of Figure 4 at which point the drum 65 may be stopped. The carriers will move from the position of Figure 3 to that of Figure 4 when the cables 63 and 93 are allowed to unwind from drum 65 because the wound up tension of spring 59 is not sufficient to support the main carrier in the position of Figure 4, and the expanded position of spring 90, see Figure 7, is suicient to support the empty auxiliary carrier in the open position and therefore as cables 63 and 93 are released to allow the carriers to assume the positions of Figure 4 from Figure 3, the auxiliary carrier will not begin to lower until sheave block assembly 11 has returned to the position indicated in Figure 7, at which point the latch bar 66 will again drop into. latchlng association with stem 18 and stop 19 and the sheave block assembly 11 is again latched against movement toward sheaves 14. The winding drum 65 may then be stopped and the carriers retained in the position of Figure-4 for loading. The auxiliary carrier 4l may be lowered from the position of Figure 4 to that of Figure 2 by simply releasing drum 65 again and allowing cables 63 and 93 to unwind. As this simultaneous unwinding of cables 63 and 93 takes place the slack that would otherwise be present in cable 93 is taken up automatically by winding drum 51 actuated by spring 59. It will be noted that the auxiliary carrier 4l may be disposed in any desired position between that of Figure 2 and the' position of Figure 4 without affecting the position of the main carrier as indicated in Figures 2 and 4. Two winding drums 65 could be used, one for each of cables 63 and 93 but this would require a pair of control levers for the operation thereof. One of the principal advantages of my invention lies in the fact that only one control lever 95 is required to control both carriers. The other control lever 96 being used to control the raising and lowering of the main frame to position the scraper 39 relative to the ground through the operation of winding drum 33 on cable 3|.

No description is given of the'winch mounted on the tractor for the reason that it is of conventional design, commonly referred to as a double drum winch. The use of a single drum for simultaneously winding up two cables to control the discharging of two carriers is believed to be new.

I claim:

1. In a scraper, a main carrier, an auxiliary carrier disposed forwardly of the main carrier to be loaded in common therewith, said carriers being adapted to discharge onto the ground, exible controls for each of said carriers, common actuating means for actuating said exible controls simultaneously to cause said carriers to operate, and means cooperating with said actuating means to cause said carriers to operate successively.

2. In a scraper, a main carrier, an auxiliary carrier disposed forwardly of the main carrier to be loaded in common therewith, said carriers being adapted to discharge onto the ground, a control cable applied to each of said carriers, a common winding drum for simultaneously winding up said cables so as to cause said carriers to operate and other means cooperating with said drum to cause said carriers to operate successively.

3. In a scraper, a frame, a main carrier pivoted to said frame, an auxiliary carrier disposed forwardly of said main carrier so as to be loaded in common therewith, said carriers being adapted to discharge onto the ground, a control cable for each of said carriers to cause the same to discharge, winding means for winding up both control cables to cause said carriers to operate, and other means cooperating with said winding means to cause said carriers to operate successively.

4. In a scraper, a frame, a main carrier disposed with the frame, an auxiliary carrier disposed forwardly of said main carrier to be loaded in common therewith, said carriers being adapted to discharge onto the ground, a control cable for each carrier operably associated therewith, take up means for adjusting the slack on one of said cables, a winding drum for winding up the control cables simultaneouslyto cause the carriers to operate, and a second means cooperating with "I v "simultaneously, so ,as to' cause Y the"l carriers' to op'- finpredeterminedordenf `materialscraped up by thescraper,lan auxiliary carrier operably pivoted to saiduframe forwardly "erat'ey and I'means "cooperating with .sai'djwinding'f drum to cause said carriers to operatesuccessively y auxiliaryl carrier, pivoted to said lframe and dis- 6."In a scraper, a wheelsupportd/frame in'- 'jcludingspaced apart s idefwalls, a. main carrier lhaving a bottom `tiltablydisposed'betweenfsaid sidewalls, a 'scraper disposed -at the front edgey of the main bottom', said sidewalls and said bottom forming a receptacle adapted to receive `of said main carrier to be floaded in common therewith, both carriersjbeing adapted to discharge onto the ground' at their confronting edges. control means associated with said carriers for discharging the same, means fortaking up the slackvon one of said control means, and .other means cooperating with vsaid controlmeans for causing said carriers todischarge successively in predetermined order.

k'7. In a scraper, a frame including side walls, rolling supports for the frame, a maincarrier bottom tiltably disposed between the` side walls, a scraper disposed at the front edge of the'main bottom, said side walls and the main bottom forming a receptacle adapted to receive material scraped up by the scraper, an auxiliary carrier operably disposed in front of the main carrier to be loaded in common therewith, said carriers being adapted to discharge onto the ground at their confronting edges, a control cable for each of said carriers operably associated therewith, a common winding drum for winding up said control cables, and means cooperating with said drum to cause said carriers to operate successively.

8. In a scraper, a frame including side walls, rolling supports for the frame, a main carrier having a bottom tiltably disposed between the side walls, a scraper disposed at the front end of said main bottom, said side walls and said bottom forming a primary receptacle adapted to receive material scraped up by the scraper, a secondary carrier operably disposed irl front of the main carrier to be loaded in common therewith, both carriers being adapted to discharge onto the ground, a control cable for each carrier operably associated therewith and a winding drum for winding up the control cables simultaneously to cause the carriers to operate, and means cooperating with said windingvdrum to cause said carriers to operate successively.

y material scraped up by saidmscrapen'a secondary e 9.7In a scraper, 'a frame including side walls "as rigid integral parts thereof, rolling supports for the frame, a bottomy wall tiltably disposed between the side walls, a scraper disposed at the forward end of the bottom wall for scraping up material, said side walls and said bottom constituting a primary receptacle adapted to receive winding drum to successively.

arriers ,ftof operate, ting .witlrsaid `windre'rS @energie Siwmain carrieriiltablydisposedon said frame, an

posed Vforwardlyof the main carriery tol be` loaded .in common` therewith,s`aid carriers beingvadapte'd todischargao'nto the ground at their-confronting edges, a control cable for each carrier and simultaneously forA operating said carriers, ,and a second means cooperating-with said Acommon A cause. said carriersto operate 11. In a scraper, a wheel. supported-frame, a main carrier tiltablyldisposed on the frame, an auxiliary( carrier pivotedrto said frame forwardly of the mainrcarrier lto be loaded in common therewith, said carriers Vbeing adapted to discharge onto the groundat their confronting edges, a control cable for each carrier operably associated therewith and resiliently attached at their rear ends to the frame,a winding drum for winding up the cables simultaneously for operating saidA carriers and a second operable means cooperating with said winding drum to cause said carriers to operate successively.

1.2. In a scraper,I a frame including spaced apart parallel side walls as rigid integral parts thereof, a main-carrier bottom tiltably disposed between the side walls, said main bottom being sidably cooperable at its ends with said parallel side walls, whereby said side walls may serve as o end closures therefor, an auxiliary carrier opersaid carriers operably associated therewith, a

winding drum for winding up said cables, and means cooperating with said winding drum to cause said carriers to operate successively.

13. In a scraper, a supporting frame including spaced apart parallel side walls as rigid integral parts thereof, transverse beams rigidly connecting said side walls, a main carrier bottom open at both sides and pivotally supported on said side walls adjacent its forward end, said main bottom being slidably cooperable at its ends with saidkparallel side walls, whereby said side walls may serve as end closures therefor, an auxiliary carrier operably disposed in front of the main carrier to be loaded in common therewith, both carriers being adapted to discharge on to the ground at their confronting edges, a control cable for-each ofsaid carriers operably associated therewith, a winding drum for winding up said cables, and means cooperating with said winding drum to cause said carriers to operate successively. 1

CHARLES LE BLEU.

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