US2368196A - Hauling scraper - Google Patents

Description

Jan. 30, 1945 M. M. BROQERSEN HAULING SCRAPER Filed Feb. 11, 1941 5 Sheets-Sheet l m m m.

Jan. 30, 1945.

BRODERSEN HAULING SCRAPER Filed Feb. 11, 1941 5 Sheets-Sheet 2 INVENTOR:

Jan 30, 11945. M. M. BRODERSEN HAULING SCRAPER Filed Feb. 11, 1941 5 Sheets-Sheet 3 INVENTOR:

Jan. 30, 1945. M M. BRODERSEN HAULING SCRAPER 1.941 5 Sheets-Sheet 4 Filed Feb. 11

INVENTOR:

Patented Jan. 30, 1945 Max M. Brodersen', Alhambra, Calif'.,,assignor to The Sl'usser -M'cLean Scraper Companyq'Sidney; Ohio, at eorporation of Ohio Application February 11, 1941, Serial Not-378,397

6' Claims. (Cl. 37"'126) This invention relates to improvements in heavy duty hauling scrapers of the type shown.

in my Patents No. 2,220,472 and. No. 2,220,473 dated November 5, 1940, respectively.

The primary object of my presentinvention is to. provide a scraper with a bowl in which the back for saidbowl comprises a separate element independently mounted on the scraper frame and which is arranged to push the dirt out of the bowl as said'bowl is tilted. Thus a doubly effective discharge of the bowl is obtained becausein addition to dumping the earth by gravity upon tilting the, bcwllthe earth is forced out. of the bowl by positive mechanical means.

Another object is to provide the bowl with a back which is arranged so that the earth ejecting action is effected simply by the tilting of the bowl without any application of motive power directly to the back element.

.This arrangement permits a simple yet sturdy construction of a scraper in which the load may be positively ej ectedfrom the bowl with less power and a finer degree'of control than has heretofore been possible.

With these and other objects in view the invention consists in'the combination, correlation and construction of parts; members-and-features' which will bedescribed in the-specification andwill be finally pointed out'in-the claims.

Referring to the drawings:

Figure 1 is a plan view of the scraper'embodying-my invention.

Figure 2 is a-sectional elevation taken on-line 2-2 inFigure' 1, showing the scraper in the digging position.

Figure 3 is a side-elevation of the scraper in the load carrying position.

Figure 4 is asection similar to Figure 2 but showing the scraper in the load dumping and spreading position.

Figure 5 is adiagram illustrating the cable arrangement f or lifting th frame.

Figure 6 is a diagram showingthe bowl control cable arrangement.

Figure"! is-a diagram.-of thecable arrangement :for controlling'the bowl closure.

The invention exemplifiedin: the; drawings in one oiitspractical .iormspo'f' embodiment includes a rectangular primary frame structure I0 comprising a pair of spaced apart side elements H which aresupportedatzthe rear ends on the outer ends of: axles l2 of:wheels.|3 andarev rigidly eonnected at the .forwardaendsz-to across member; l4.

The cross member |1|:hascentrallyinterposed be:- tweenztheendsthereof aiorwardly extendingiand w:

downwardly depending. leg l5 whichis swivelably supported, as! at l6, on a wheeled carriage Thewheeled carriage l'l is. adapted for connection to the draw bar of a tractor in the usual manner.

A. secondary frame structure l8, interposed between the side members of the primary frame, comprises a pair of spaced apart side plate members; l9 having a generally trapezoidal contour. The, side plates 18 areirigidly connected at the forward ends to a tubular cross member 20 and are supported at. the rear ends onthe aide l2, as at, I9a, adjacent the outer sides or the wheels |3.

The rear ends of the'side plates l9v arev rigidly interconnected by a fabricated frame work which includes a transverse cross member 2|. securely connected at the ends to said side plates. IS, a pair of spaced apart vertical arms. 22 which are centrally positioned and. secured atthe; lower forward corners to the. "cross member 2|, a cross member 23 rigidly interposed between the right vertical arm 22' and side plate. l9 respectively, a cross member 24' rigidly interposed between the left vertical'arm 22 and side plat l9 respectively, a rearwardly extending triangular arm plate 25 positioned adjacent the inner side of the right wheel l3 and. secured to the cross members 2| and 23 respectively and a rearwardly extending triangular arm plate 26 positioned adjacent the.

inner side of ,theleft wheel l3'and secured to the cross members, 2| and 24 respectively. Both arm plates, 25 and 26. are supported on the right and leftaxle |2 as indicated at 25a and 26a respectively. A cross member 21 is interposed between the arm plates 25 and 26 and carries rigidly secured thereto the vertical arms 22'. The upper ends of the veitical arms 22 are rigidly interconnected by a tubular cross member 28.

The side elements II are provided with upwardly extending brackets 29 connected at the upper ends thereof toa tubular cross member 30, which in turn has'secured thereto, intermediate itsends, a set of six spaced apart ears 3|. The ears 3| are inclined upwardly toward the rfrcnt and carry at the-ends thereof a shaft 32 which in turn carries five sheaves 33 journaled thereon in an interposed relation between said ears 3|.

The tubular cross'mem ber 20, between theiorward ends of side plates |9,'has secured thereto, intermediate its ends, a set of five spaced apart ears. The cars 34-are inclined upwardly toward the front and carry at the ends thereof; a:

lowerv rear corners of the shaft 35 which in turn carries journaled thereon three sheaves 36 interposed between the ears 34.

A cable 3'! anchored or dead-ended as at 38, is reeved between three of the sheaves 33 and two of the sheaves 36 and is then passed under a sheave 39 journaled on shaft 40 between ears 4| on the cross member I4, over a sheave 42 journaled in bracket 43 on the leg I5, passed through a swiveled sheave 44 and connected to a suitable power controlled device on the tractor. See cable diagram in Figure 5.

By pulling and releasing the cable 31, vertical swinging movement is imparted to the secondary frame l8 about the axles l2 of the rear wheels l3 thereby raising and lowering the implement.

A bowl 45 comprising a bottom 46 and side plates 41 is disposed between the side plate members l9 and is supported at the forward end on a pair of links 48. The links 48 are pivotally connected at their lower ends to the bowl side plates 41, as at 48, and at their upper ends to the frame side plates l9, as at 50. The'upper rear corners of the bowl side plates 41 are rigidly connected to a cross member The forward edge of the bowl bottom 46 is provided with the usual scraper blade 52 and the rear edge is curved upwardly as shown at 53. The lower rear corners of the bowl are provided with rearwardly extending brackets 54 each of which carries journaled at the ends thereof a roller 55. The rollers 55 are guided in vertical channels 56 which are secured to the inner surfaces of the frame plates IS.

The bowl is provided with a rear end gate or back element 51 which is pivotally supported on the frame side plates l9 by means of lugs 58 at the upper corners of the back element which lugs in turn are pivotally mounted on pins 59 extending inwardly from said frame side plates.

The curved rear edge 53 of the bowl bottom 45 is provided with a pair of ears 60 which support a shaft 6| having journaled thereon a sheave 62.

The tubular cross member 28 between the vertical arms 22 is provided with a. set of four forwardly inclined ears 63 carrying a shaft 64 at the ends thereof on which are journaled three sheaves 65.

A cable 66, anchored as at 61, is reeved between two of the sheaves 65 and the sheave 62 on the bowl and is then passed over one of the sheaves 33 on the tubular cross member 30, under a sheave 68 journaled on the shaft 40 between a pair of ears 69 on the cross member [4, over a sheave journaled in a bracket H on the leg l5, passed through a swiveled sheave l2 and connected to a suitable power controlled device on the tractor. .See Figure 6.

By exerting a pulling force on the cable 66the rear end of the bowl 45 is raised vertically, by virtue of the guide rollers 55 in the vertical channels 56, which causes the forward end of the bowl to swing rearwardly on the links 48 thereby tilting the bottom of the bowl to discharge the load, as may be observed in Figure 4. Stops 13 and 14 are provided at the upper and lower ends, respectively, of the channels 56 to limit the raised and lowered positions of the rear end of said bowl.

To discharge the load the bowl is tilted in the manner described above so that the dirt is dumped by gravity. However, in order to aid gravity in discharging the bowl the back element 51 is actuated by the tilting movement of the bowl to eject or push out the dirt. Thus a more effective and complete discharge of the bowl is obtained than is possible by simply tilting the bowl, particularly in moist or clayish soils. Furthermore, the combination of positive ejection with the gravity discharge facilitates more effective discharge with less power than was possible in scrapers having a power operated end gate for pushing out the dirt out of a rigid or non-tilting bowl.

In Figures 2 and 3 which illustrate the digging and carrying positions of the bowl respectively, it will be seen that the lower edge 15 of the back 51 overlaps the edge of the curved portion 53 of the bowl bottom to retain the back from swinging outwardly from said bowl. The cross member 5! holds the back against swinging into the bowl during the digging operation.

Upon discharging the load, the initial tilting movement of the bowl starts swinging the cross member 5| away from the back while at the same time the curved portion 53 of the bowl bottom I starts camming the back inwardly to force the dirt out. When the edge 15 reaches the end of the curved portion 53, the bottom 46 is at a sufficient angle to continue the inward camming of the back while the bottom 46 swings up behind the back into the fully tilted position shown in Figure 4. The frictional contact of the back edge 15 against the bottom 46, during the camming operation, scrapes the bottom cleanly of all adhering olods of dirt thereby effecting a complete discharge.

A closure 16 is provided for the receiving end of the bowl to retain the load during transportation. The closure 16 includes a pair of arms ll which extend rearwardly and are pivotally supported at their rear ends on the side plates l8, as at 18. The closure 16 is provided with a pair of forwardl extending lobes I9 which carry interposed therebetween a sheave 80 journaled on a shaft 8|.

A cable 82, anchored at one end on the cross member I4 as at 83, is passed under the sheave 80, over one of the sheaves 36 on the cross member 20, over one of the sheaves 33 on the cross member 30, over one of the sheaves 65 on the cross member 28, under a sheave 84 journaled on a shaft 85 supported between the vertical arms 22 and anchored at the other end on the sheave shaft 6| at the back of the bowl bottom.

The bowl closure 16 is controlled by the tilting of the bowl 45 and by the raising and lowering of the secondary frame l8. Figure 3 shows the implement in the load carrying position wherein the bowl is raised above the ground surface. The cable 82 is just long enough to support the closure 16 in the closed position at the receiving end of the bowl to prevent spilling of the dirt during transportation. In discharging the dirt, the bowl is tilted as shown in Figure 4 wherein the cable 82 is pulled by the elevation of the rear end of said bowl to raise or open the closure 16. In the digging position as shown in Figure 2, the closure 76 is lowered into the closed position upon lowering the rear end of the bowl, then when the frame I8 is lowered to bring the bowl into the digging position the receiving end of the bowl drops away from the closure providing an opening for admittance of the scraped up material. Upon completing the scraping operation the loaded bowl is simply raised up to the, closure.

Having thus described my invention I claim:

1. An earth moving machine comprising a primary frame structure, front and rear wheeled carriages for supporting said primary frame, a secondary frame supported at its rear end on the rear wheeled carriage, cable power means associated with the ,front end of said secondary frame and said primary frame for imparting vertical swinging movement to said secondary frame, a bowl, link means for supporting the front end of said bowl on the secondary frame, means connecting the rear end of said bowl to said secondary frame to guide said rear end for vertical movement, cable power means associated with the rear end of said bowl and said secondary frame for imparting vertical movement to the rear end of said bowl and thereby causing rearward movement of the front of said bowl thus tilting the bottom of said bowl, a rear end closure for said bowl, pivotal means at the top of said end closure for swingingly supporting same on said secondary frame, said end closure being arranged so that its bottom edge cooperates with the bottom of said bowl to swing the closure into the bowl upon tilting of said bottom thereby ejecting the earth from said bowl.

2. An earth moving machine comprising: a frame structure, a bowl, link means supporting the forward end of said bowl on said frame structure, means connecting the rear end of said bowl to said frame structure to guide said rear end for vertical movement, cable means associated with the rear end of said bowl and said frame structure for imparting vertical movement to the rear end of said bowl thereby causing rearward movement of the forward portion of said bowl and thus tilting the bottom of said bowl, a rear end closure for said bowl, pivotal means at the upper portion of said end closure for swingably supporting same on said frame structure, the lower edge of said end closure operatively engaging the bottom of said bowl to swing said end closure into said bowl upon tilting of said bottom thereby aiding in ejection of earth from said bowl.

3. A hauling scraper comprising: a frame structure, a bowl comprising bottom and sides in fixed relationship, links swingably suspending said bowl from said frame structure and a vertically shiftable connection between the rear of said bowl and said frame structure, means for shifting said connection to elevate the rear end of said bowl, and a rear gate pivotally supported on said frame structure and engageable by said bottom to swing said gate relatively forward into said bowl when said bowl is tilted for dumping.

4. An earth scraper including a frame structure, a bowl tiltably mounted on said frame structure, a rear end closure for said bowl pivotally supported at its upper end on said frame structure and adapted to stop rearwardly against an element on the lower portion of said bowl, and means on the upper portion of said bowl engag ing said end closure to hold the latter against said bowl element when said bowl is in earth collecting or retaining position, said means shifting away from said end closure to free the latter when said bowl is in tilted dumping position.

5. An earth scraper including a frame structure, a bowl tiltably mounted on aid frame structure, a rear end closure for said bowl pivotally supported at its upper end on said frame structure and adapted to stop rearwardly against an element on the lower portion of said bowl, means on the upper portion of said bowl engaging said end closure to hold the latter against said bowl element when said bowl is in earth collecting or retaining position, said means shifting away from said end closure to free the latter when said bowl is in tilted dumping position, and the lower edge of said end closure co-operating with the lower portion of said bowl to force said end closure into said bowl when the latter is tilted to dumping position.

6. An earth scraper including a frame structure, a bowl tiltably mounted on said frame structure, a rear end closure for said bowl pivotally supported at its upper end on said frame struc-' ture and adapted to stop rearwardly against an element on the lower portion of said bowl, means on the upper portion of said bowl engaging said end closure to hold the latter against said bowl .element when said bowl is in earth collecting .or retaining position, said means shifting away

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