US1473890A - Scraper - Google Patents

Description

Nov. 13,1923. d www@ G. D, TOY ET AL SCRAPER Filed Aug. 28. 1.922 s shets-sheet 1 I N VEN TORS.

ATTORNEY.

Nov. 13, i923.

G. D. TOY ET AL SGRAPER Filed Aug. 28. 1922 3 Sheets-Sheet 2 IIL.

NVENTOR5 0` QL 7 QW@ ATTORNEY.

Nov. 13, 1923. mmm@ G. D. TOY ET AL SCRAPER Filed Aug. 28. 1922 3 Sheets-Sheet 5 Fatenteel hier'. 1.3i, 11.923.

. GEORGE TOY AND HUGH T0?, @1F SXDNEJY, GEM). SCRAPER. Application led August 28, 1922. Serial No. Ma-.331.

To aZ- Zwlz'omz't may concern.' Figure -9 shows this arrangement in con- Be 1t known that we, Gnono'n l). Tor and dltion for transportation. HUGH T. Tor, citizens of the United States, Figure 10 is a plan of the arrangement residing 'at Sidney, in the county of Shelby shown in Figs. 7 to 9, inclusive, and 60 and State of Ohio, have jointly invented Figure 11 is a detail view, showing an arnew and useful Improvements in Scrapers, rangement for varying the length of the of which the following is a specification. chains shown in Figure 10.

ur invention relates to Scrapers of the Referring now to Fi res 1 and 2, the class to be attached to a tractor and used for scraper comprises a bla e 10 which is rein- 65 the various purposes, such. for example, as forced at the upper edge and ends by angles leveling dumps or back-filling ditches. 11 and 12F-12. Another angle, 13, is located he principal object of our invention is about the center of the blade. On the back to so construct a scraper of the class referred of the blade, at each end, is located a segto that it will not drag material with it as mental rocker 14, each having a removable 70 it moves backward. This is accomplished shoe or tread which can be renewed when by rocking the scraper blade from its opernecessary. A pair of links 15 is pivotally ative posit-ion to a 'recumbent position as it attached to the blade at its upper edge, the starts backward and elevating the blade other ends of the links being pivotally confrom the ground. Another object is to so nected to the tractor. A pair of short links 75 support the blade as it moves forward that 16 is pivotally connected to the blade below although its lower edge rests on the ground the links 15, which links depend and at their and acts effectively, it is prevented from lower ends are'plvotally connected to long digging into the ground. Other objects and links 17, the other ends of which are pivota vantages of Scrapers constructed accordally connected to the tractor at points as S0 ing to our invention will be pointed out shown. When the tractor moves forward, as presently. is supposed to be the case in Fig. 1, `the The invention will be explained with the links 16 lie against the blade and the lower aid of the following drawings, in whichedge of the blade is pushed along by the Figure l illustrates the preferred form of links 17, the effect being the same as though S5 our scraper in its operative position. It is the links 17 were connected directly to the shown attached to a crawling tractor, but it blade. And thus the links 15 and 17 cooperis to be. understood that any type of tractor ate to hold the blade in its operative posimay be employed. tion, that is, approximately vertical, allow- Figure 2 illustrates the. manner in which ing the lower edge of the blade to scrape 90 the blade is rocked into a recumbent posithe ground. As the link attachments are all tion. when the tractor backs. pivotal, the scraper is enabled to rest on the Figure 3 is a detail showing a modified ground at all ti es andaccommodate itself arrangement of the lower link. to the surface it is moving over, regardless Figure 4 shows an arrangement for backof whether the tractor is on higher or lower 95 filling a ditch where the tractor must be ground.' stationed on the side of the ditch opposite When the direction of the tractor reverses to that lon which the earth has been piled. and it moves backward, that is, to the left Figure 5 shows the operation of the as it is seen in Fig. 2, the bla-de rolls on scraper seen in Fig. 4 when the direction of the rockers 14 to the recumbent position 109 the tractor is reversed. shown in Fig. 2, elevating the blade from Figure 6 shows the par-ts seen in Fi s. 4 the ground so t at it cannot `drag any of and 5 but assembled and attached to the the material back with it. The blade is tractor dii'erently. enabled to assume this recumbent position Figure 7 illustrates still another modiby virtue of the links 17 being attached 305 cation. This type is designed more parto the blade by means of the short links ticularly for cases where the scraper is liable 16. That is, as the tractor starts backward to be moved long distances without being it draws the upper edge of the blade with in service. In this ligure the bladeis shown it, and also the links 17. But instead ot in operative position. the. links 17 drawlng the lower edge of the M0 Figure 8 shows the same arrangement blade backward the short links swing away when the blade is being moved backward. from the blade allowing the blade to roll,

l dragging a quantity of the earth this result, one of .which and this action continues until the links `16 and 17 have assumed a position substantially end on,"that is, the short and long llinks being practically in alinement. Then the scraper is dragged back, the rockers slidlng along the ground, and thus retro-movement of the material the scraper is acting upon is avoided. The elect of the links straightening out in the manner described is as though the vlinks 17 had been lengthened, that is as though they were telescopic, for example. There are other ways of effecting is shown in Fig. 3. There the link 16 is dispensed with and the link is attached to the blade by a stud 18 which plays in a curved slot in a member 19.

As seen in Figure 1, the rockers act as guides andv prevent the lower edge of the scraper blade digging into the ground. The links 15 are made in two parts'so that their length may beadjusted, therebyT varying the position of the blade with reference to the ground. The -links 17 are connected by cross bars 20 and 21 to give lateral rigidity p to the structure.

IOne of the uses of such a scraper is filling in ditches after the purpose for which the ditches were dug has been accomplished It frequently occurs that there is no room for a tractor on the side of a ditch on which the earth has been piled, and it becomes necessar to operate the tractor on the opposite si e of the ditch. Fig. 4 shows, diagrammatically',l an arrangement of our invention for this purpose. This arrangement also illustrates a modification of our invention in which but two links are used linstead of four, and wherein the same parts 'can be used for either pulling or pushing the scraper. i y

In this `construction the scraper is substantially the same as in that already described. The link 30 is pivotall attached to the .rocker 14 at 31, and exten ing downward its lower extremity bears against the angle 12 on the back of the blade. Extending some distance above the blade the link makes a turn and runs at a downward slope to the point where it is pivotally attached to the frame of the tractor. Thus larche the link is enabled to pass over the pile of earth lbeside the ditch, and it is clear that/when the tractor moves backward, i. e., to the left as itis seen in Figure 4, it wil draw the scraper toward the open ditch, withit. The pivotal connection 31 and bearing of the lower end of the link against the blade enable the single link 30I to maintain the rectitude of the blade which in Figures 1, 2 and 3 requires two links.` For obvious reasons a link 30 is placed at each end of the blade, just as in Figures 1 and 2 a pair of links is placed at each end. When the tractor moves-forward, that is, to the right I as seen in Figure4, the blade rolls on its rockers as in Il igure 5, this movement beingI limited by the end of the link impinging on the inner surface of the rocker, as in Figure 5. l f i In Figure 6 the parts are the same as in Figure 4, but the scraper has been turned around, and in order to bring itclose to the tractor the links have been attached to brackets 32 carried by tractor frame near its rear end. The term tractor is used in this specification in ay broad sense, for while the type of tractor shown is especially well adopted to the purpose, it is obvious that other tractors, or even other means than a tractor, .using the term now in a specific sense, may be used for supporting the free ends of the links and moving the scraper.

We shall now describe the structure shown in Figs. 7 to 11, inclusive. Inasmuch as the blade and shoe are substantially like thosel shown in the other views we shall use the saine numerals in referring to those arts. Pivotally attached to the back of the blade 10, near its up and below'this bar, t edge of the blade, a attached. The free pivotally connected ol' a short bar 42, attached to the tractor at pivotal attachment 43 may able point on the tractor, we prefer to make .it coincide with' the axis of the driving wheels. By referring to Fig. 8 it will be seen that as the tractor backs, the shoe 14 rolling on the ground rocks the blade just as it does in the other structures shown; when the tractor moves forward the blade rocks the other way, and thus the blade is brought to operative or inoperative position as the tractor moves forward and backward.

In some kinds of service it becomes necessary to transport the scraper considerable distances, and to avoid thesevere wear on the rockers which this would entail, wc eapliip the rockers with wheels 44. These w eels run on studs projecting from brackets 45 secured in the rockers. Whenthewheels at is, near the lower bar 41, is pivotally respectively to the ends this bar being pivotally 43. 'While the d are to be brought into use the blade is rocked to the position shown in Fig. 9, and it is retained in that position by a hook 46, pivoted to the bar 40 at 47, and engaging l the upper edge of the blade. The pivotal end of the hook is arranged to impinge on a'block 48 which is riveted to the bar 41, thereby rendering the condition shown in Fig. 9 stable. The hook has a laterally extending lug 49, which normally bears on a pin 50 set in bar 40, and holds the hook 1n an angularly depending position, where it is adapted to engage the block 48 as the blade rocks in response to backward movement of the tractor, and prevent the blade ends of these bars arebe at any suit-A er edge, is a ba'r 40,

rocking' far enough to bring the wheel to the ground. (See Figure 8.) The h cut away at 51 to form a shoulder 52 which engages the block.

VWhile there are various ways in which we might limit the rocking of the blade as the tractor starts forward, we prefer to do this link may be hooked latwise, as in Fig. 11.

eye 56 at the other side of the tractor, crossing the chains. These chains are attached to the eyes by the adjusting means just described.

While only the structure shown in Figs.

to 10 are equipped with Wheels it is obvious that the other structures shown may also be so equipped.

that shown in our application number 584,- 930 tiled herewith for driving gear for snow plows.

It is to be understood that We do not restrict ourselves to the specilic structures shown, nor limited thereto except as it is limited by the appended claims.

by the tractor, and made to operative position when it .is opposite direction.

scraper comprising a blade adapted to occupy an operative position and an inoperative position, a link pivotally attached to the blade, the free endl of the link being tractor, and a segmental shoe attached to the blade, adapted to rollon th is moved in the opposite direction.

scraper comprising a blade adapted to occupy an operative operative position, alink pivotally attached ing the movement of the bl position and an in- 't to the blade, the free end of the link being adapted to attach to a tractor, a seguental shoe attached 'to the blade, adapted to' 'oll on the ground when the blade is moved in one direction and rock the blade with reference to the link from; its operative to its lnoperative position, and to rock the blade back to its operative position when it is moved in t e opposite direction, and means for limitde with reference to the link, the blade being in operative position at one extremity/of said movement and inoperative position/ at the other extremity thereof.

scraper comprising a blade adapted to operate in an approximately vertical position with its edge on the ground, a link -pivotally' attached to the blade, the free end oi t e hnk tractor, and

being adapted to attach to a of the link being adaptedto attach to a blade from position when the blade is moved in one operative position when the blade is moved in the opposite direction.

scraper comprising a blade adapted to operate in an approximately vertical position with its edge on the ground, a link pivotally attached to the blade, the free end ot' the link being adapted -to attach to a tractor, a rocker attached to the blade adapted to roll on the ground and rock the de from its operative to a recumbent positionl elevated from the ground, when the blade is moved in one direction. and from said recunibent to its operative position movement.

scraper comprising a blade adapted to operate in an approximately vertical position with its edh he ground, a link pivotally attached to the blade, the free end of the link being adapted to tractor, a second link attached to the blade,

recumbent attach to a f" the `tree end of this link being also adapted to to cooperate with to move it along th aining theA blade 1n operative position and,

e ground` and means shoe attached to the whereby, in effect, said second link is lengthened when the blade .is moved by the links in a. direction opposite 'to that in which it moves when in operation, thereby allowing the blade to assume arecumbent osition.

8. A. scraper comprising a blate adapted to occupy an operative, position and an inoperative position, a link pivotally attached to the blade, the free end of the link being adapted to attach to a tractor, a segmental blade, adapted to roll on the ground when the blade is moved in onel direction and rock the blade with reference to the link from its operative to its inoperative position, and to rock the blade back to its operative position when it is moved in the opposite direction, means for limiting the movement. ofthe blade with reference to the link, meansfor removing said limit at will, and a wheel adapted to relieve the shoe and assume the carriage of the blade whensaid limit is removed.

9. A scraper comprising a blade adapted to operate in an approximately vertical position with its edge on the ground, a link pivotally attached to the blade,'the free end-of the link being adapted to attach to a tractor, a rocker attached to the-blade, adapted to loll en the ground and rock the blade from its operative to a recnmbent position when the. blade is moved in one direction and from said recumbent to its operative position when the blade is moved inthe opposite direction, and a wheel adapted to carry the blade and hold the rocker off of the ground when the scraper is to be transported.

10. A scraper comprising a blade adapted to operate in an approximately vertical position with its edge on the ground, a link pivotally attached to the blade, the free end of the link being adapted to attach to a tractor, a rocker attached to the blade, adapted to roll on the ground and rock the blade from its operative to a recumbent position elevated from the ground when the blade is moved in one direction, and from said recumbent 'to its operative position, when the blade is moved in the opposite direction; a second link attached to the blade, the free end thereof being also adapted to attach to a tractor, saidlink being arranged to cooperate with the first link in maintaining the blade in operative position and to I move it along the ground, and means whereby, `in effect, said second link i'slengthened when the blade is moved by the links in a dition with its edge on the ground, a

rection opposite lto that in which moves when in operation, thereby allowing ,the bladeto rock to the aforesaid recumbent position, with its low-er edge elevated from the ground. 11. A to operate scraper comprising a blade adapted in an approximately vertical posip link to the blade with its free end attached to a tractor; a second link, below the first, with its end attached to the blade by a short depending link, the other end of this second link being also attachable to the tractor; the relations of the links being such that when the tractor moves forward -and the end of the lower link abuts the blade the blade is maintained in its vertical position, while when the tractor backs thelower link is permitted by the depending link to leave the blade and allow the blade to assume a recumbent position, the lower and depending links assuming a position more or less rectilineal.

l2. A scraper comprising a. blade having a rocker on its back arranged to slide on the ground while the blade is scraping and preventing the edge of the blade from digging into the ground, said rocker being adapted to roll on the ground when'the blade is moved backward and rock the blade to a recnmbent position with its scraping edge elevated; and an operating member whereby to move the blade forward and backward along the ground.

13. A scraper comprising a blade, means for bitching said blade to a tractor, said pivot ally attached means enabling the tractor to move the blade forward and backward and permitting the blade to assume a vertical position with its edge resting on the ground when it is moved forward, and to rock to a substantially horizontal' position when it is moved backward, and means in which friction between parts of the scraper and the ground is a factor, for causing the blade to assume a vertical position upon being moved forward a short distance and to maintain said position as long as the blade continues to move forward, blade to rock horizontal, and elevated from the ground, upon being moved a short distance backward and maintaining that position while it continues to move backward.

GEORGE D. TOY. HUGH T. TOY.

and for causing the to a posltion approximately

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