US2224438A - Scraper - Google Patents

Description

Dec. 10, 1940. i ,c. LE BLEU 2,224,438

SCRAPER Filed Jan. 26, 1939 s Sheets-Sheet i Q i fizz/e12 tar v (fi l/1 155 [5515 SCRAPER 3 Sh eets Sheet 2 Dec. l0,'1940. c; L; BLEU Filed Jan. 26, 1939 Patented Dec. 10, 1940 UNITED STATES PATENT OFF 1 C E SCRAPER, 1

Charles Le Bleu, Los Angeles, Calif. Application January 26, 1939, Serial No. 253,006

3 Claims.

This invention relates to. material moving means and particularly pertains to the type of device known as a carry-all scraper and is a continuation in part of myco-pending application entitled Scrapers, Serial No. 40,847, filed September 16, 1935.

The principal object of the present invention is to provide a scraper which has a bucket disposed with the frame, the two sections of the frame being movable with relation to eachother so that the bucket and the main frame may be readily raised and lowered upon the upstanding arm associated with the front truck of the device to allow the main frame and the bucket to 5 be readily and easily raised and lowered while carrying a capacity load.

The invention is illustrated by way, of example in the accompanying drawings in which:

Figure l is a view of the side elevation of the device.

Figure 2 is a view in longitudinal cross-section as seen on line 2-2 of Figure 3 of the drawings.- Figure 3 is a view in plan showingthe general arrangement of parts of the present inyention. Referring more particularly to the drawings, IIl indicates in general the main frame structure, incorporated in theframe at its forward end are non-friction members Ii, I2, I3, and It, spaced apart and arranged to mount the front end of the frame for vertical movement on the upstanding arm or post I5 swivelly connected at its lower end to the front truck IS. The front truck I8 is adapted for connection to any suitable draft means. The rear end of the main frame structure I is suitably mounted upon rolling supports ll. Attached to the frame I0 at l8.is a suitably constructed bottom I9 which is held in place atits forward end by brace means 20. A'scraper blade 2| is detachably secured to the-forward edge of the bottom I9. Attached to the-main frame ID at each side thereof are brackets 22' and 23. Pivotally mounted on the lower ends of -each of these brackets is a front gate structure 24 provided with an upwardly projecting arm 25 carrying at its upper end and at each side thereof sheaves 28 and 21. Extending transversely of the frame In and journaled in suitable bearings 28; 29, 38, and SI, secured thereto is a crankshaft 32. Between the bearings 29 and 38 are a pair of arms 33 and 34 carrying a transversely extending rear gate 35 for horizontal swinging movement. Secured to arms 33 and 34 are rearwardly extendingarms 36 and 31 carrying between their rear ends by means of a pin 38 a plurality of sheaves 39. Secured to the rear gate at each side thereof is a pair of stops, 48 and H. Secured to the frame III at 42 are brackets 43 which pivotally "support a boxlike structure 44. This structure comprises a block 45 secured to a rod 46 pivotally connected at 4! (Cl. 37-126) 1 a and at'its outer end to the rear gate 35. The

boxlike. structure 44 is provided at its forward means to swing the rear gate 35 on its axis in emptying the bucket 89. It is understood that the bucket in this instance includes .the bottom I9, the rear gate 35, and side boards 35'. The gate 35 may be temporarily lockedby locking hooks 55 and 56 which engage in members 40 and 4! carried by the gate. The hooks may be released by any suitable mechanism such, for

example, as that indicated in my co-pending application of which this is a division.

Referring more particularly to the front truck structure I8 it will be seen that this truck comprises an axle I upon which a pair of wheels I8 and I1 are mounted. Mountedupon the axle l5 between the wheels is a yoke structure l8 comprising a draw bar I9 and carrying a kingpin 80 which runs vertically through the yoke l8 to allow lateral swinging movement of the truck I6.

Mounted upon the lower end of the upright I5 is an inclined kingpin bearing -8l having a pin 82 running horizontally through the lower forward end of the inclined kingpin whereby the forward end of the inclined kingpin will be pivotally mounted to the yoke I8 rearwardly of the kingpin BI].- 'Ihis'constructionallows for the vertical movement of the drawbar I9 without changing the relative position of the upright I5 and also allows for the movement of the up ht I5 when changing position when the main frame 98 is raised and lowered upon the upright, the operation of which will be described later. It will thus be seen that with the construction of the front truck as here described a universal action will be obtainable.

It will be understood that the mounting of the sheaves 69 and I8 on the one hand and sheave l3 on'the other hand may be reversed if so desired.

That is to say, that sheaves 69 and I0 may be mounted on the forward'end of frame I0 and sheave 13 may then be mounted on the forward end of arms Blcarried by the upright I5. Again sheaves I59 and I3 may be mounted as shown in the drawings and-the sheave l0 may be mounted on theforward end of the frame I0 instead of on the arms 81 as here shown. Attention is directed to the fact that the arm 61 is rigidly secured to the upper end of the post I5 and that it projects 2 i aaaesss forwardly to overhang the frame. It will also be noted that the-forward truck structure It is disposed in advance of the post and that the post is inclined. Due to this arrangement the 90st 5 will bein a sense counter-balanced'so that its action will be relatively free and so that it will not be difflcult for the frame to adjust itself with relation to the post at any time. It will further be evident that this arrangement makes it posl sible for the load within the scraperto bemore easily lifted and lowered. In operation of the device the elevation of the scraper blade II with respectto the surface of the earth is controlled by the manipulation of cable 83 which is anl chored at one end to the arms 61 at It and which around and about sheaves N and If andthen about the direction change sheave l2 and extending forwardly to a winding drum carried upon the draft'means and which isof 20 conventionaldesign and is, therefore, not shown as it will be understood that any winding means will operate satisfactorily. Thus the slack in cable 83 will permit the forward end of frame 10. to move downwardly on the upstanding arm 25 I S and consequently thescraperblade II will be loweredQ Rewinding of. the cable 83 will result in lifting the forward end of frame I Q thus. raising the scraper blade il. Thus the forward end of the frame may be raised and lowered by 30 manipulation 'of cable to allow the-forward end of the frame structure II to move up and downwith relation to the upstanding arm ll i 'freely'upon non-friction'members II', II, II, and

I4. Cable fl is anchored to the rearwafl y ex- .35 tending arm 88 at It and passes; downwardly around sheave. l2 and upwardly and completely around sheave 30 and back around sheave I! and then upwardly over sheave I! and forwardly so outwardly away from the bucket I! and the cable will in turn act upon sheaves II and II and its anchor ll to thenmove the re'argate SI .againstthe. resistance of the spring forwardly to elect the material from the It will g be understood that with this arrangement the front gate will operate and will be moved to its open position before the forward movement of I the rear' gate ll to eject a load, When slack is allowed on cable II when the winding drum is Q released the tension imposed upon spring ll by the forward movement of the rear late will-re- .turn the rear gate. to its. normal position at the rear of the bucket and will operate the cable to allow the front gate 24 to return to its normal as closed position with relation to the forward end of the bucket. It will thus be seen that with the structure here disclosed it will be Possible to control vertical movement of the scraper frame and i-ts bucket upon and with relation to the 1. front truckand to raise and l scraper blade withreiation tothe surfaceto be upon by means of a single cable operated from the draft means hat it will also be POBSIbIe to open and close the front gate of the device and the rear gate thereafter to easily and eflectively eject the load from thedevice .by operation ofa single cable controlling these two actions and that the constructionand operation of the device is extremely simple compared to those nowinuse.

While I have shown the preferred form of my invention it is now known to me that various changes might be made in the -combination, conwheels supporting the frame at its rear end, a

front truck, a post mounted on and upstanding from said front truck, means mounting the forward 'end..of said'frame for free vertical movement on said post, sheave means mounted on the upper end of said post and overhanging the same in a forwardly direction, sheave means mounted on the forward end of said frame in advance of the post and in operatingrelation to the sheave on said-post and a cable anchored at one end on said post and passing back and forth about saidsheaves'whereby said frame may be' tilted about the rear wheels as an 'axis as its forward end is raised and lowered on said post.

2. In a' scraper, a frame, means supporting the frame at-its rear 'end, a front truck, a post mounted 'on and upstanding from said front truck; and inclined upwardly and. 'rearwardly therefrom; means mounting the forward portion of said frame for free" up and down movement .on said post, sheave means mounted on the upper end of said post aand in advance thereof,

sheave means mounted on the forward portion of said frame in advance of the post and in operating relation to the sheaves on said post and flexible means passing back and forth about said sheave means whereby the forward portion of said framemay be raised and lowered.

8. A scraper comprising a load receiving bucket having a scraping blade at the forward edge thereof, a rear axle at the rear of said bucket, a frame, one end of which is supported by the rear axle and which frame is free to swing vertically,

said frame overhanging the bucket and support- .ing the same, a guide structure carried by the frame adjacent its forward end and comprising two horisontallyaligned pairs of rollers disposed and carrying a sheave, a sheave carried by the frame in advance of the'post, and a flexible cable led around said sheaves and fixed at one end relative to the post whereby action to draw the frame and overhanging arm of the post together will tend to'raise the frameon the post.

CHARLES LE BLEU.

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