US1863844A - Auxiliary loading wing for scrapers - Google Patents

Description

June 2l, 1932.- w. H. GUY ETAL AUXILIARY Lomme WING Fon sc'mmns Filed Jan. `1?. 1931 .y i uvEN-rons WmHGu/,lra D. jug and .Y Q E S ATTORNEY Patented June 21, 1932 f UNITED l STATES PATENT oFFica WILLIAJI n. GUY, nu D. GUY, AND aonnar E. GUY, or s'rocxroN, ca uFonNIa AUXILIARY LOADING WING FOR SCRAPERS Application led January 17, 1931. Serial No. 509,427.

This invention relates to scrapers, and particularly to Scrapers of that character shown in our Patents-Nos. 1,497,505 dated June 10, 1924, and 1,784,284, dated December 9, 1930; though the invention may be applied to other types of Scrapers as well.

In scraping operations the dirt as scraped and dug up b the advancing blade is always pushed ahea somewhat owing to the resistl. ance between the dirt and the upwardly sloping blade which retards the movement of the dirt along the blade and into the bowl of the chamber. This resistance is accentuated as the bowl becomes loaded andthe `1I dirt is heaped deeply in the bowl, and a relativel large rcentage of the dirt being dug oryscrapedpis then pushed ahead. As a result some of the dirt, although dug and loosened from the ground, is not received into 'n the bowl but passes to the sides of the same,

andin the aggregate a considerable quantity of dirt is thus atleast tem orarily lost.

The rincipal object o our invention is to avoid tliis loss by providing win s arranged Q5 ahead of the bowl and associated t erewith in such a manner that all the dirt as dug and pushed ahead of the bowl will be retained in the transverse area between the sides of the bowl, so that it must all ultimately pass into 80 the same. The result of nipping a scraper with these wings is that t e loading time is appreciably cut and as much asa greater load is received in the bowl with no greater expenditure of power. The wings are also mountedso that when the scraper 1s in a non- Y digging or dirt-conveying position said wings are automatically raised clear ofthe ground so that they do not interfere with the turning of the'scraper, nor do they tend to contact with an thing adjacent the ground and be possibly nt or distorted.

A further object of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the pur se for which it is designed.

These ob]ects we accomplish by means of .suchstructure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

5 In the drawing similar characters of ref erence indicate corresponding parts in the several views:

Fig. 1 is a fragmentary side elevation of a scraper showing our improved wing arrangement. 5F

Fig. 2 is a fragmentary sectional plan of the left hand side of the scraper taken on the line 2-2 of Fig. 1.

Referring now more particularly to the characters of reference on the drawing, the C0 scraper depicted is of the general type shown in the above mentioned patents, and includes horizontal frames 1 upstanding from which are parallel and substantially rectangular side walls 2, the space between which forms the load carrying 'area of the scraper. A blade and apron member 3 disposed at a downward acute angle to a horizontal plane extends between the frames a short distan-ce back of their forward ends. This blade delivers onto an endless conveyor on which the dirt passes from the blade and by which it is conveyed to and discharged over the rear end of the structure. This arrangement is particularly shown in Patent No. 1,497,505, and forms no part of the present invention. The frame is Tockably supported intermediate its ends and clear of the ground on endless track units 4 as shown in said patents, so that said frame may be tilted down at its forward end in order to enable the blade to engage the grond in scraping or digging relation therewit A tongue comprisingtransversely spaced arms 5 converging together at their forward ends to form an A-shaped member extends rearwardly from and is connected to the forward end of the drawbar of a tractor, and at its rear end has pivotal connection with the side walls 2 near the front and bottom of the same. The connection on each side is made by a pair of heavy transversely spaced and horizontally alined bars 6 which at their rear ends straddle the corresponding wall 2 so that one bar is on the inside and one on the 9" outside of the same; a pivot bolt 7 passing through said wall and the bars. The bars form extensions of the corresponding tongue arm and at their forward ends are rigidlyl secured thereto.

extends from ahead of the same some distance to the rear end of the bar 6, so as to overlap the side wall somewhat though being separate from the same. The upper and lower edges of the wing are parallel to the tongue and are some distance above and below the' saine. The depth of the wing below the tongue is such that when the scraper is tilted to a digging position (in which position the ongue is substantially parallel to the ground) the bottom edge of the wing is about on a level with the bottom of the blade 3, as shown in Fig. 1, or so that it slightly engages the ground. Also with this positioning of the wing the rear edge of the same is close to the lower cutting edge of the blade. It will thus be seen that as the dirt is dug and the scraper advances, any dirt which may be pushed ahead of the blade is retained in place relative to the side lwalls by the side wings 8, so that al1 this dirt will be ultimately loaded onto the scraper. This, as will beI evident, will effect the desired economy in loading time and will increase the volume of the dirt loaded.

When the scraper is raised to a non-digging or load-conveying position the adjacent end of the tongue is of course raised likewise, thus positively raising the wings clear 'of' the ground, as indicated in dotted lines in F ig. 1. The wings then offer no interference to the turning of the scraper nor are they apt to catch against the ground or any obstruction tending to bend the same. To thus raise the scrape-r the same mechanism is preferablyused, as is shown in Patent No. 1,784,284. This mechanism compris-es essentially a beam 9 pivoted at its forward end onto the tongue adjacent its forward end and extending` thence over the top of the body of the scraper at the front. At this end said beamis engaged by a mechanism acting to move the ad]acent end of the scraper body longitudinally relative to the beam and thus tilting the same and effecting a raising or lowering of said scraper' body.

From the foregoing description it will be readily seen that we have produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described our invention what we claim as new and useful and desire to secure by Letters Patent is:

1. In combination, a scraper bowl having side walls, forwardly extending` draft arms pivoted on the walls on the outside, said'arms close to and ahead of the walls being bent transversely so that their'inner faces lie inwardly of the inner faces of the corresppnding walls, and wings secured against the inner faces of the transversely bent portions of the arms and extending rearwardlyv thereof to overlap the side wal tures.

vWILLIAM H. GUY ROBERT E. GUY. IRA D. GUY.

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