US1869320A - Power scraper - Google Patents

Description

July 26, 1932. 1. E. YOUNIE 1,869,320

POWER SCRAPER K Filed April 10, 1950 A TTORNEYS.

Patented July 26 1932 UNITED STATES.

LEWIS E. YOUNIE, OF

COMPANY,

IORTLAND, onneon, Assrenon r0 Enno'rmc screen rounnnv 0F PORTLAND, OREGON, A CORPORATION" OF. OREGON,

rownn scnArEn Application filed April 10,

The present invention is designed to improve power scrapers. These scrapers differ somewhat from bottomless scrapers and also from the ordinary drag line buckets. These scrapers are subjected to very severe strains.

ting the material and turning it inwar into the space within the scraper much as plows cut and turn the earth acted upon.

The scraper is improved by dividing it by a forwardly extending plate on which arecutting blades, or shoes operating in the manner of the shoes on the main walls of the scraper. Such a projecting plate may be utilized for bracing the arch where an arch is used, the connection not only bracing the arch but bracing the rear wall of Features and details of the invention will appear from the specification and claims.

A preferred embodiment of the invention is illustrated in the accompanying drawing as follows Fig. 1 shows a plan view of'the scraper.

Fig. 2 a section on the line 2-2 in Fig. 1.

Fig. 3 a front elevation of the scraper. i

Fig. 4 a section on the line 4-4 in Fig. 1.

Fig. 5 a section on the line 55 in Fig. 1.

The scraper has the sides 1, rear ends 2 and a central dividing member 3, thus providing two compartments 4, 4. The tops of the walls of the scraper are formed by channels 5 which are curved at the rear and united at 6 with the central plate 3, thechannels forming shape. A. plate 7 is secured at the juncture of the channels and is provided with haulback links, or connections 8.

provided similar The walls are extended downwardly by the scraper through such connection. p

'and the plate connects thev'rear 'end 'ofthe rolled up into the scraper.-

what might be described as a heart I at its bottom; a

1930. Serial 115443377." curved so 'as to roll the earth as it is cu't' up ward ends of the shoes at the sides have points scraper walls of the scraper and thus reduce the force necessary to operate the scraper. The shoes intothe interior of the scraper. Theforare also cut out backfrom their cuttingedges at 10. This reduces the ground-friction and reduces the metal required. The central shoe terminates in a point 15 which is preferably made in a separate piece'sothatit may be renewed, if desired. Itwill also be understood that the shoes, or extensions ll ma'y also be renewed. r

' An-arch 16, preferably of box form, isse- I cured to the side walls terminating intheupwardly Angle plates 17 connect the plate 3 with the arch. Thus the arch is braced by the plate extending portions ofthe shoes-12.

scraper, thus bracing and stiffening the rear With this structure the earth is cut and The arch is very much stiffened and also the' rear wall and 'a the ;.ordinary construction. rTh h l form along the top makes asi'mple, t'

r gged construction for the wall. What I claim as new is' 1. .A power scraper having side walls and a connecting rear wall, -said scraper being 2. A power scraper having side 'wallsand a r connecting rear wall, said scraper being open at its bottom; and a dividing plate extending from the rear wall between theside walls and dividing the scraper into two compartments. 3. A power scraper having side walls and a connecting rear wall, said scraper being open the rear wall between the side walls and divid-T dividing plate extending from...

8 much wider drag link is'fea'sible than with shoes projecting inwardly from the lower ;projecting inwardly from the lower edges of ing the scraper into two compartments; and an arch connecting the side walls, said arch being connected with the dividing plate.

4. A power scraper having side walls and a connecting rear wall, said scraper being open at its bottom; and laterally extending edges of the side walls, said shoes terminating in forwardly and laterally outwardly extending-pointsat'theirforward ends.v 7 V V 5. A power scraperhaving side walls and a connecting rear wall; a forwardlyextending dividing plate; and laterally extending shoes projecting inwardly froIn theside' walls I and dividing plate.

'6, A power scraper haying side wallsand 1, a connecting rear wall, said scraper being open at its bottom; a forwardly extending dividing plate; and laterallyextending shoes projecting inwardly from the side wallsand dividing plate, said shoes terminating in points at theirforward ends.

7., Afpower scraper having side walls and a connecting rear wall; a forwardly extending dividing plate r and laterally extendingshoes V r the side and rear walls and the dividing plate.

8. A power scraper having side walls and a connectingv rear-wall; a forwardly extendv ingdividing plate; and laterally extending shoes pro ecting inwardly from the lower edges, ofthe side and rear walls and the dividing plate, andterrninating in pointsrat 'theirforward end.: P i o, 9. Apower scraper having side walls with --.a connecting rear-wall;- a forwardly projecting dividing plate;-and laterally extending -shoesproject1ng from, the lower edge of the dividing plate.

--10.- A power scraper having side-walls with I I la'connecting rear wall; a forwardlyvprojecting dividing p'late; and laterally'exten'ding shoesprOje'ctmg from the-lower edge of the dividing plate and terminating in a point at its :forward end.

' .11. A powerscraper comprising side walls 1 and'a connecting rear wall; a forwardly prov jecting dividing plate; laterally extending shoes projecting inwardly from :the lower edges of the side and rear wallsanddividing 7 plate, ISQ-lCl ShOGS terminating in points at their forward ends; an arch connecting the I sides; and aconnection between the arch: and the plate. 5

In: testimonywhereof l haveherennto set myhand. I LEWIS-EYO'UNIE.

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