US2212713A - Scraper - Google Patents

Description

C. LE BLEU Aug. 27, 1940.

S CRAPER Filed Nov. 20, 1936 4 Sheets-Sheet 1 INVENTOR.

ATTORNEYS.

(2. LE BLEU Aug. 27, 1940;

SCRAPER Filed Nov. 20; 1956 4 Sheets-Sheet 2 A TTORNEYS.

C. LE BLEU Aug. 27, 1940.

SCRAPER Filed Nov. 20, 1936 4 Sheets-Shoat 3 INVENTOR.

ATTORNEYS.

C. LE BLEU Aug. 27, 1940.

SCRAPER Filed Nov. 20, 1936 4 Sheets-Sheet 4 IN VEN TOR.

A TTORNEYS.

:Patented Aug. 27, 1940 PATENT OFFICE SCBAPER Charles Le Bieu, Los Angeles, Calif. Application November 20, 1936, Serial No. 111,884

6 Claims.

This invention relates to material digging, scraping, leveling'and transporting machines as used in leveling ground, building roads, excavating, grading, transporting material etc.; and particularly to that class of material moving machines commonly known as scrapers by means of which materials may be scraped up and transported.

An object of this invention is the provision in a scraper; of a frame, a scraper carried by the frame; a main carrier, including a bottom and a back plate, movably disposed rearwardly of the scraper; and an auxiliary carrier movably disposed forwardly of the scraper.

Another object of the invention is the provision in a scraper; of a frame, a scraper carried by the frame, a main carrier operably disposed rearwardly of the scraper, an auxiliary carrier ope rably disposed forwardly of the scraper, means operably associating the main carrier and the auxiliary carrier for imparting movement to the auxiliary carrier when the main carrier is operated and means for operating the main carrier.

Another object of the invention is the provision in a. scraper; a supporting frame adapted to be raised and lowered, a scraper rigid with the frame, a main carrier tiltably disposed rearwardly of the scraper, an auxiliary carrier movably disposed forwardly of the scraper, means operably associating the main carrier and the auxiliary carrier for imparting movement to the auxiliary carrier when the main carrier is tilted, means for tilting the main carrier and means for raising and lowering the supporting frame.

Another object of the invention is the provision in a scraper; of a frame, rolling supports for the rear end of the frame,-a scraper carried by the frame, means for tilting the frame about the rear wheels as an axis for determining the position of the scraper relative to the ground, a main carrier tiltably disposed on the frame rearwardly of the scraper, an auxiliary'carrier movably disposed forwardly of the scraper, operable means associating the main carrier and the auxiliary carrier for imparting movement to the auxiliary carrier when the main carrier is tilted and means for tilting the main carrier.

Another object of this invention is the pro sion in a scraper; of a main carrier including sidewalls, an auxiliary carrier disposed forwardly of the main carrier and having side walls disposed in alignment with the side walls of .the main carrier and in close proximity thereto to prevent materials spilling outwardly therebetwee Another object of this invention is the provision in a scraper; of a frame; a main carrier tiltably disposed on the frame, an auxiliary carrier movably disposed forwardly of the main car- 10 rier both carriers being adapted to discharge material at their confronting ends, means disposed with the main carrier and the auxiliary carrier whereby when the bottom of the main carrier is tilted upwardly or downwardly from the horizontal the auxiliary carrier will be moved to open position and means to tilt the main carrier. 7

Still other objects, features and advantages of this invention will be apparent to those skilled in the art upon detailed perusal of the attached drawings and the following specifications wherein I describe and exemplify my invention, but it is to be understood that my invention as herein exemplified and described is susceptible to modiflcation in the combination, correlation and construction of parts, members and features without departing from the spirit of the invention as. defined in the annexed claims.

In the drawingssimilar characters of reference designate corresponding parts in the several views.

In the drawings:

Figure 1 is a plan view of my invention.

Figure 2 is a side elevation of Figure 1, showing the various parts disposed in carrying position.

Figure 3 is a side elevation in section taken on the broken line 3-4-34 of-Flgure 1 showing the various parts disposed in the dumping posi- 40 tion.

Figure 4 is a side elevation in section taken on the broken line 3-4-34 ofFigure 1 showing the various parts in leading position.

Figure 5'is a fragmentary plan view in section taken on the broken line 5-5 of Figure 2 and shows the side walls of the auxiliary carrier disposed in alignment with and in close proximity to the frame plates that serve as side walls for the main carrier so that materials may not spill outwardly therebetween.

Figure 6 is a fragmentary reproduction of Figure 3 showing a modified form of my invention.

Referring now to the characters of reference on the drawings the frame F is supported at its rear end on an axle I having journaled thereon rolling supports 2. The frame F comprises rearwardly extending legs 3 secured at their rear ends to axle I and at their front ends to cross beams 4 and 5. Rigid with cross beams 4 and 5 are forwardly extending side walls 6. Secured at its opposite ends each to the upper front end of a side wall 6 is a cross beam 1. A wedge shaped cross beam 8 is rigidly secured at its opposite ends each to a side wall 6. Detachably secui'ed to wedge beam 8 is a scraper blade 9. Beginning at the lower rear corners of sidewalls 6 are chan- I front ends with cross beam H. Rigidly securedat its rear end to cross beam II is a forwardly extending beam l2. Mounted in the side plates of beam l2 are spaced apart pins I3 carrying rollers formed to receive a rectangular upright post l4, said post I4 being swivelly mounted at its lower end on a pony truck l5, said pony truck l5 being provided with a draft beam I6 adapted in a conventional manner at its front end for connectionto a draft device.

The front end of frame F being mounted for vertical movement on post l4, means for imparting such movement to the front end of frame F areprovided as follows: Rigid at its rear end with the upper end of post I4 is a forwardly extending arm l1. -Sheave means I8 is journaled on a pin l9 carried by arm 11. Sheave means 20 is journaled on a pin 2| mounted in the front end of frame F operating relation to sheave means I 8. A cable 22 is anchored at 23 to frame F and extends thence up and down about sheaves I8 and 20 and thence downwardly about a direction change sheave 24 thence forwardly to a winding drum not shown. Thus cable22 may be wound up to tilt the frame F upwardly about the rear wheels 2 as an axis and may be released to allow the frame F to tilt downwardly about the rear wheels 2 as an axis.

A tubular member 25 extends from side wall 6 to the other of side walls 6 just behind the wedge beam 8, said tubular member being journaledon a shaft 26 mounted at its opposite ends each on a side wall 6. Rigid with tubular member 25 is a bottom plate 21 carying a back wall 28. Secured along the top edge of back wall 28 is a cross beam 29. Braces 30 are rigid at their upper ends with cross beam 29 and back wall 28 and at their lower ends with bottom plate 21. Thus is examplified a main carrier tiltably mounted on the frame, the side walls 6 being an integral part of frame F.

Rigidlysecured to cross beam- 29 near each of its opposite ends are brackets 3| provided with pins 32 having journaled thereon sheaves 33.

Rigid with cross beam II are bearings 34 having journaled therein a power shaft 35. Rigid with I power shaft 35 at each of its ends are winding drums 36. Anchored at 31 are cables 38, preferably rectangular in their cross sections, passing rearwardly to and then upwardly about sheaves 33 and thence forwardly to winding drums 36 to which they are anchored.

Rigid with power shaft 35 near its center is a winding drum 39. Anchored to winding drum 39 is a cable 46. A substantial amount of cable 48 is wound on drum 39 and passes thenceforwardly and then downwardly about a sheave 4| and direction change sheave 42 and thence forwardly to a winding drum not shown. Thus, cable 48 may be wound up, on the winding drum not shown, causing clockwise rotation of drum 33, power shaft 35 and winding drums 36, thus winding up cables 38 on winding drums 36 with the results that the main carriermay be tilted to the position shown in Figure 3.

Side walls 6 are each provided with a bracket 43 upon which is pivotally mounted the rear and a bottom 46, said side plates being also secured to the bottom. Thus is exemplified an auxiliary carrier.

Pivotally mounted on braces at 41 are thrust members 46 adapted at their upper ends to engage pins 49 rigid one with each of the arms 44. Thus when the main carrier is tilted from the horizontal upwardly to the position shown in Figure 3, the auxiliary carrier, because of the action of thrust members 48 upon pins 43, will also be moved to the position shown in Figure 3.

Also pivotally mounted upon each of the brack-- its opposite ends each to the rear end of an arm 50. .Cross beam 54 is provided between its ends with brackets 55 carrying a pin 56 having journaled thereon a roller 51. Beam 29 is provided with a bent arm 58 positioned to engage roller 56. Thus it will be seen that if cable 48 is released the main carrier may tilt downwardly to the position shown in Figure4 and the weight of the main carrieris such that when applied by bent arm 58 to arms 58 through the roller 56 and cross beam 54 the auxiliary carrier will also be moved to the position shown in Figure 4.

Viewing Figure 5, it will be noted that side I walls 6 of the main carrier and side walls 45 of the auxiliary carrier are in alignment and in close proximity to each other to prevent materials from spilling outwardly therebetween. It

will also be noted that the front edges of side walls 6 and the rear edges of side walls 45 coincide with a circle the focal point of which ,is

the pivotal connection of arms 44 with brackets 43.

Assuming the position of Figure 2, then in operation to load the carriers suitable operation of cable 46 will dispose the carriers in the relative position shown in Figure 4, and suitable operation of cable 22 will dispose the scraper 6 in scraping contact with the ground and as the machine is moved forward while in the position shown in Figure 4 material scraped up by the scraper 9 will be forced rearwardly into the main carrier until loaded after which materials may fall forwardly into the auxiliary carrier. It

' should be noted at this point that the auxiliary .Suitable manipulation of cable 22 should then be made to raise the frame to the position of Figure 2, in which position the load may be transported to any desired place of discharge. When the place of discharge is reached suitable manipulation of cable 40 will cause the carriers to assume the diunping position shown in Figure 3, the materials thus being discharged at the front edge of the scraper. Obviously, the materials may be spread any desired thickness by suitable manipulation of cable 22 to determine the position of scraper 9 relative to the ground. All parts being in the position of Figure 3, suitable ,manipulation of cable 40 may be resorted to for disposing the carriers in either of the positions shown in Figures 2 and 4, and suitable manipulation of, cable 22 will again dispose the scraper 9 in the position of Figure 4.

Attention is particularly directed to the position of the bottom of the main carrier during the operation of loading the same. Note that the said bottom inclines downwardly from the scraper 9 rearwardly, see Figure 4, thus minimizing the resistance to rearward movement of material from the scraper 9 to the rear end of the bottom 21.

Attention is also directed to the fact that the main carrier is free to tilt upwardly, should the bottom come in contact with large stones and the like, without the necessity of lifting the weight of the entire machine.

Figure 6 is a reproduction of Figure 3 exemplifying a modified form of my invention. Note that the cross beam 1 at the upper front corners of side walls 6, pins 49 and thrust members 48 have all been eliminated in Figure 6, and to secure the action dependent upon pins 49 and thrust members 48 I provide in Figure 6 the following: A bracket 59 is secured to the back 28. Brackets 60 are secured to cross beam 4 at the lower rear end of side walls 6 and are provided with a pin 6| having iournaled thereon a sheave 62. Brackets 55 are provided with a rearwardly extending portion 63 carrying a pin 64 having journaled thereon a sheave 65. A bracket 66 is secured to cross beam and extends rearwardly therefrom. A cable 61 is secured at an end to bracket 66 and passes thence upwardly and then downwardly about sheave 65, thence downwardly to and then upwardly about sheave 62 and is then mounted on bracket 59 at 68. Thus is provided means for applying a downward pull to beam 54 for swinging the auxiliary carrier to open position when the main carrier is tilted to the dumping position as shown in Figure 6.

From the foregoing description it is apparent that I have exemplified such a device as substantially fulfills the objects of the invention as set forth herein.

Having thus described and exemplified my invention what I claim as new and useful and desire to secure by Letters Patent is:

1. In adevice of the character described, a frame, a scraper rigid with the frame, a main carrier operably disposed behind the scraper to receive materials therefrom, an auxiliary carrier operably disposed in front of the scraper to be loaded in common with the main carrier, thrust means operably associating the main carrier and the auxiliarycarrier for imparting movement to the latter when the main carrier is operated, and means for operating the main carrier.

2. In a device of the character described, a frame, a scraper carried by the frame, a main carrier tiltably mounted at its front end behind the scraper, an auxiliary carrier disposed forwardly of the scraper, arms rigid at their front ends with the auxiliary carrier and pivoted at their rear ends on. the frame, operable means mounted on the frame and engaging said arms, and means carried by the main carrier for enaging said operable means to swing the auxiliary carrier upwardly when the main carrier tilts downwardly.

3. In a device of the character described, a frame, a scraper carried by the frame, a main carrier tiltably mounted at its front end behind the scraper, an auxiliary carrier disposed forwardly of the scraper, arms rigid attheir front ends with the auxiliary carrier and pivoted at their rear ends on the frame, operable means pivotally mounted on the frame and engaging said arms, and means disposed on the main carrier for engaging said operable means and swing the auxiliary carrier to open position when the main carrier tilts downwardly past the horizontal.

4. In a scraper, a main carrier, side walls disposed one at each side of the main carrier, and an auxiliary carrier pivotally mounted for swinging movement in a vertical plane forwardly of the main carrier and having side walls disposed substantially in alignment with the side walls of the main carrier and in close proximity thereto to prevent material spilling outwardly therebetween, the confronting edges of said side walls being formed to coincide with a circle the focal point of which is the pivotal mounting of the auxiliary carrier.

5. In a scraper, a main carrier, side walls disposed one at each side of the'main carrier, an auxiliary carrier disposed forwardly of the main carrier and having side walls disposed substantially in alignment with the side walls of the main carrier and in close proximity thereto to prevent materials from spilling outwardly therebetween and means pivotally mounting the auxiliary carrier on the side walls of the main carrier for swinging movement in a vertical plane, the confronting edges of said side walls being formed to coincide with a circle the focal point of which is the pivotal mounting of the auxiliary carrier on the side walls of the main carrier.

6. In a scraper, a frame including spaced apart side walls as arigid integral part thereof, a scraper rigid with the side walls of the frame, a main bottom disposed between the side walls and tiltably mounted at its front end behind the scraper, an auxiliary bottom disposed forwardly of the scraper and having side walls disposed substantially in alignment with the side walls of the frame and in close proximity thereto to prevent materials from spilling outwardly therebetween and means pivotally mounting the auxiliary bottom on the side walls of the frame for swinging movement in a vertical plane, the confronting edges of the side walls being formed to coincide with a circle the focal point of which is the pivotal mounting of the auxiliary bottom on the side walls of the frame.

CHARLESIEBLEU.

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