US2404123A - Carrying scraper - Google Patents

Description

July 16, 1946. M. A. CLARK HCARRYING SC-RAPER 3 Sheets-Sheet 1 Filed June 6, 1945 Q mm Q N w w I m N um m. QN *1: i w fiHH O o 1. v E 9 July 16, 1946. M. A. CLARK 2,404,123

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M. A. CLARK CARRYING SGRAPER Filed June 6, 1945 3 Sheets-Sheet 3 INVENTOR M H. Clark FTTYS Patented July 16,1946

UNITED STATES EPATENT oral. or.

CARRYING SCBABER Mar-ion AcClark, Tulare, ,Galif.

Application June 6, 1945, Serial No. 597,798

"the bowlis cylindrical; said earthgelevating means comprising a, reel surrounding the 'bowl in rotatable relation, the ,reel including a plurality of longitudinallyextending, circmnferentiallyrspaced earth elevating vanes, and there being .-an arouate earth retaining hood extending circumferentially about the reel from the .blade :to substantially the point=of discharge of earth into :the

' bowl; the reel running ;between said bowl .and

hood whereby earth carried :by the .reel is LCOD- fined against :escapeiunti-l discharged :into said bowl. I

A further "object :of the invention is :to mount the digging blade .on the loweredge of the shOQd, and to power actuate flshe ZhQQd about the: cof

.the bowl to raise ,or flower the blade -,t her.e tbeing supporting wheels associated with the hood :in :a manner such that when the blade is in digging position the wheels are clear of the ground, but when the blade is raised to a certain extent, the wheels engage the ground and support the scraper bowl and reel clear for transport.

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 for which it is designed.

These objects are accomplished by means of such structure and relative arrangement of parts as will fully appear by a, perusal of the following specification and claim.

In the drawings similar characters of reference indicate corresponding parts in the several views:

Figure 1 is a sectional elevation of the scraper in loading position. I

Figure 2 is a side elevation, partly in section, of the scraper in discharging position.

Figure 3 is a plan view of the scraper, with the power cylinders removed.

Referrin now more particularly to the characters of reference on the drawings, the scraper comprises a main frame I which includes a for- -1 Claim. (01. 37-9) wardly projecting :dra'ft assembly 2 adapted :for :connection with a tractor, and which draft assembly =may be supported at its forward end, if desired, by a wheel truck 3. *The frame it also in cludes :a pair of rigid, rearwardly extending side beams 4 disposed inrelatively widely spaced par- 'allel relation.

Adjacent their rear ends .the side beams 4 are :connectediby axheavy-dutycross shaft 5 .journaled "in connection with and projecting .short dis- =1tance outwardly of saidibeams.

.EBetwe'en :the side beams 4 the shaft 5supports' :6, saidfbowl having :a zfullwidthibut circumferen- I levating reel, vindicated generally at a8; and which reel comprises scircular end ,plates :9 journaled on the cross shaft 5 between "the-ends of the bowl '6 and thezsidebeams '4. w'lhegcircularend plates 9 .are [,connected together zoutwardly .of the bowl 6 by longitudinally extending, ,circumferentially spaqfidearthtelevating vanes 1:0 ,said :vanes being .of (substantial width and extending radially 30f vthedzzowl and thegreel.

arcuate, earth retaining hoo .:l;[ of somewhat less than .80\extent extends circumferentially about and cooperate with the reelat the ackih ree a sa d hood-inclu in forward y pr iedting hd p1ates d2 whichinclude laterallyv outwardly offset legs l3 journaled in connection with the cross shaft 5 outwardly of the side beams 4. The legs l3 are of alength such that they project some distance beyond the cross shaft 5, and in a direction centrally opposite the hood I I. At their outer ends the legs [3 are fitted with outwardly extending spindles M which carry ground engaging wheels l5.

At its lower edge the hood H is fitted with a transverse, earth scraping or digging blade I 6; the arrangement being such that when the blade I6 is in earth engagement below the cylindrical bowl 6, the wheels l5 are clear of the ground, as shown in Fig. 1.

The rotary position of the hood II is controlled by double-acting power cylinders I! which connect between upstandin posts I 8 on the side beams 4 ahead of the bowl and the adjacent forward edge portions of the end plates l2 of the hood II at points adjacent the periphery of the latter. The power cylinders l! are controlled from the tractor by a conventional valved fluid 1 pressure system. When the cylinders I! are extended the hood H occupies a rotative position ing position, as shown in Fig; 1, and at which time the wheels 15 are clear of the ground, with x the reel 8 riding the ground ahead of said blade l6. However, when the cylinders I! are contracted, as shown in Fig, 2, the hood is swung to a raised position so that the blad I6 is clear of the ground; the wheels then riding the ground with the bowl 6 and reel 8' clear thereo; This is the transport position of the scraper.

' When the scraper is in working position, as in Fig. 1, earth is dug or scraped up by the blade 16 with advance of the implement. As the implement advances, the reel'on account of its ground engagementrotates in a clockwise di- :rection and the vanes I pick up the earth dug by the 'blade [6 and sweep such loose earth u-pwardly between the hood II and corresponding portion of the bowl 6 until such earth reaches the normally upwardly facing openingl. Asthe vanes reach such opening the loose earth fall through said opening into the bowl'6.

When the bowl 6 is filled, 'as above described, the hood I I is actuated to raise the blade I and lower the wheels l5 into ground engagementfor transportof thesload.

After 'the'lo'ad has beenjtransported to 'the point of discharge, -the bowl Bis rotatedzsoias to cause the opening 1 to move toward the bottom of the bowl, .and :at which'time :the load spills through said opening; The bowl Biis so rotated between its loading and dumping positionsby means of the following power mechanism:

Power cylinders l9 are pivotallylmounted, as at 2B, in connection with the posts [8, and the piston rods :21 of said cylinders are formed with rearwardly projecting racks '22, which cooperate V in meshing engagement with pinions 23 fixed on the cross shaft 5 outwardly of'the legs [3. The racks 22 aremaintained in'mesh with the pinions 3 by suitable roller hold-down units, indi cated generally at 24. It will be seen that by actuation of the power cylinders l9' the bowl 6, which is fixed on'cross shaftB, may be positively rotated, and to controlled extent, between loading and dumping positions; the bowl beingin loading "position when the racks are advanced,

' and in dumping position when the racks are con tracted.

l withthe blades IS in ground engaging' or work- 4 the earth elevating reel assembly assuring of pos-' itive loading of said bowl. In addition, the reel, as it rides the ground during a loading operation, tends to loosen the earth directly ahead of the blade [6, forthe reason that the vanes dig into the earth in the manner shown in Fig. 1. This facilitates the digging operation and makes it easier for the blade I 6 to progress through the earth.

1 From the foregoing description it will be read- A scraper comprising a draft frame, a rotary,

bowl mounted'on the frame for rotation about a transverse axis, said bowl having a circumferential opening therein, means to 'control ro-- tation of the bowl between a loading position with the opening on top and a dumping position with the opening on the bottom, a transverse scraper blade mounted .for earth engagement'below and spaced from the bowl, an arcuate fhood extending upwardly and 'rearwardly from the blade-in spaced symmetrical relation to the bowl to apoint adjacent the top'of the latteryand an.

earth elevating-reel rotatably surroundin the bowl and running between the latter and said hood whereby to elevate earth from the blade and r 'to loadsaid earth into the bowl from the top; the I hood and blade being secured in un'itaryrelation and the hood including end members projecting radially across the ends'of the bowl, means piv- 'oting saidend members intermediate their ends axially of the bowl, supporting wheelsmo'unted on said members "at the end opposite the hood,

5' the wheels being clear'ofthe earth'when the blade engages therewith, and means torotatably adjust the hood between one position with the blade in earthengagement and the wheels'clear thereof, and another position with thebladeclear of-the earth and the wheels in engagement there- With the'improved scrapenas above described,

the bowl 6 maybe fully loaded with relative ease;

with. a MARION A. CLARK;

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