US1168723A - Road-grader. - Google Patents

Description

E. B. HARRIS.

ROAD GRADER.

APPLICATION FILED FEB. 7, WM.

Patented Jan. 18, 1916.

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Patented Jan. 18, 1916.

l y. an earns r1 ELIE B. HARRIS, E EUSTACE, TEXAS, ASSIGNOR 0F ONE-HALF TO S. L. REESE, 0F CORSICANA, TEXAS.

ROAD-GRADER.

Specification of Letters Patent.

Patented J an. 18, 1916.

Application filed February 7, 1914. Serial No. 817,160.

To all whom it 17? try concern I Be it known thatI, ELIE HARRIS, a citizen of the United States, residing at Eustace,

in the county ofHenderson and State of improvements in roadgraders, and its ob ect is to provide a road-grader of very strong and rigid construction, having a scraper blade either extremity of which may be vertically adjusted.

Another object of my invention is to provide a road-grader that will be equipped with a special provision for facilitating making a turn.

A further feature of the invention lies in the means provided to resist the action of or from its work, is

side draft, comprising two rolling disks, that support the weight of the machine, and are consequently pressed slightlyinto the ground. said disks being set at an angle to resist the tendcncv to skid created by side draft. The provision of an adjustment by which the machine may be so elevated above the two aforesaid disks that the latter may serve as transporting wheels in traveling to another feature of the road-grader.

A still further object of the invention is to provide a road-grader that can be used with one team and one man in rough sec tions of country where large machines cannot be used.

Finally, the object of my lnventlon is to provide a device of the character described that will be strong, durable, simple andeffieient and comparatively easy to construct, and also one the various parts of which will not be likely to get out of working order.

lNith these and various other objects in view, my invention has relation to certain novel features of the construction and operation, an example of which is described in the following specification, and is illustrated in the accompanying drawing, wh e rein Figure 1 is a planview of my roadgrader. Fig. 2 is a view of the same in side elevation. Fig. 3 is a rear view of the same. Fig. 4: is a detail transverse sectional view of a rolling colter, two of which are employed upon my grader, the section being taken upon the line az-w of Fig. 2. Fig. 5 is a transverse sectional view of a lever mechanism one of which is employed to adjust each colter, the section being taken upon the line y y of Fig. 2. Fig. 6 is a detail perspective view of an adjusting wedge, which 1s correlated with one of the lever mechanismson the grader. Fig. 7 is a similar detail perspective view of a slightly different form of adjusting wedge, which is'used on my grader in conjunction with another lever mechanism.

Referring now more particularly to the drawings, wherein like reference characters designate similar parts in all the figures, the numerals 1, 2 and 3 respectively denote three horizontal bars of unequal length, rigidly connected at their forward extremities as indicated at 4, and diverging as they extend rcaiwvardly from said point. The middle bar 2 extends at its forward end slightly beyondthe pointd, and is rigidly engaged between a pair of parallel arms 5 extending adjacently rearward from a vertical sleeve 6. The sleeve 6 receives a vertical pin 7, which is formed beneath said sleeve with a head 8 through which is passed a central portion of an arch axle 9, carrying transportating wheels 10 upon its extremities. Above and below the sleeve 6, there are mounted upon the pin 7, the rear extremities of a pair of horizontal forwardly extending links 11, which engage between their forward extremities a double-tree 12. A. pair of swingle-trees which are respectively attached to the extremities of the double-tree 12 are designated by the numeral 13.

To the rear extremity of each of the bars 1, 2 and 3, there is boltedor riveted an angular downwardly turned member 14-. Upon the lower extremities of the members 14,

there are formed integral rectangular plates 1 1*, to which is rlgldlv secured a scraper mold-board 15, inclined at an angle of approximately forty-five degrees with the di- 17, and between said bracket and the meme ber 15, there is interposed a wedge-shaped plate 17 formed with horizontally elongated slots 17 to receive the bolts establishinn: connection between the parts and 17.

Upon a rearwardly projecting portion of the bracket 17, there is centrally mounted the apex of a bell-crank lever comprising a handle portion 18 and a rearwardly-projecting arm 19. The bracket 17 is formed with an arcuate toothed portion which may serve to receive the usual spring-pressed,

pin carried by the lever, for the purpose of holding the lever adjusted in various positions of annular displacement." Upon the rear extremity of the arm 19, there is rot'atably mounted a bevel-edge colter 20 inclined slightly to the left from its upper to its lower edge. Upon said colter there is rigidly and concentrically mounted a guard-ring 21, having a diameter considerably less than that of the colter, said. ring serving to limit the extent to which the col' ter may enter the ground. Before tightening'the bolts by which the bracket 17 is attached to the member 15, the wedge member 17 may be adjusted horizontallyto vary the relation of the colter 20 to the scraper blade.

.To the rear face of the member 15 at its "left-hand extremity, there is secured a bracket 22 formed with spaced lugs 23 at its top and bottom. In said lugs is mounted a pin 24 inclined'slightly to the rear from its lower to its upper end. Upon the pin 24, there is swivelly mounted a bracket 25 formed upon its top edge with an arcuate series of teeth concentric with which there is pivoted upon said bracket the apex of a bell-crank lever comprising a handle portion 26 and a rearwardly projecting arm 27. Upon the rear end of the arm 27,'there is rotatably mounted a bevel-edged colter 28, having substantially the same inclination as the colter 20.- Upon the colter 28, there is rigidly and concentrically mounted a guardring 29 similar to that which has 7 been already described, and serving to perform thesame functions.

Between the brackets 22 and the member 15, thereis interposed a wedge 30, bolted to the member 15 and formed with a horizontal counter-sunk slot 31 receivingthe bolt head. The adjustment of the wedge 30 determines the extent to which'the brackets 25 may swing inwardly about the pivotal axis established by the pin 24.

The levers 18 and 26 respectively have thefunctions of vertically adjusting the correlated extremities of the scraper. It is apparent that by swinging either of said levers rearwardly, the correlated colter will be displaced beneath the pivotal point of the let er, thereby raising the correlated extremity of the scraper;

Copiesof this patent may be obtained for five cents each. by addressing Washington, D. C. i

brackets, and a colter carried by one arm I of each lever.

2-. In a road grader, the combination with a scraper, of means for applyingdraft to the same, brackets mounted upon the scraper extremities, one of said brackets being free to swing at one end upon a substantially vertical axis, means for adjustably limiting the swing of said bracket, bell-crank levers pivoted at the free end of said brackets, a colter carried by one arm of each lever, and means carried by thebrackets for holdingsaid levers ad usted 1n various positions of angular displacement.

3. Ina road grader, the combination with I a scraper, of means for applying draft thereto, brackets mounted upon the scraper for holding said levers adjusted in various positions of angulardisplacement, colters one of which is mounted upon one arm of each lever, and means for. varying the spaced relation between one, of said colters,

and thescraper.

4. In a read grader, the combination with a scraper, of means for applying draft thereto, brackets mounted upon the scraper extremities, one of said brackets being free to swing at one end upon a substantially vertical axis, means for adjustably limiting the swing of said bracket, means for varying the spaced relation between the other of said brackets and the scraper, bell-crank .90 extremities, bell-crank levers pivoted upon 7 said brackets, means carried by the brackets levers pivoted at the free end of said brackets, means carried by the brackets for hcldingsa d levers ad usted 1n various posi- =tions of angular displacement, and colters one of which is mounted, upon one arm of 5 each lever.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ELIE B. HARRIS. Witnesses: e

G. W. HARRIS, 'B. F. VVHATLEY.

the Commissioner of Patents,

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