US1543222A

US1543222A - Attachment for road-grader blades

Info

Publication number: US1543222A
Application number: US20749A
Authority: US
Inventors: Mcveety James Henry
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-04-04
Filing date: 1925-04-04
Publication date: 1925-06-23
Anticipated expiration: 1942-06-23

Description

June 23, 1925. 1,543,222

J. H. MCVEETY ATTACHMENT FOR now GRADER amass Filed April 4. 1925 llamesHM- eei INV E on MMX-MM- ,5 M4 MW v I.

ATTORNEY Patented June 23, 1925.

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'ATTACHIvIE-NT FOR ROAD-GRADEB BLADES.

Application fil ed April 4, 1925 Serial in. 29,749.

This invention relates to attachments for road graders, road drags or other road maintenance machinery having a mold board or; blade, and the present appl cation is a d'vision in part of an application, filed by me August 25, 1924, Serial No. 734,105 for a patent on a shoe for grader blades, and which was allowed l lovember 26, 1924. The object of the present invention is to improve the means employed in road graders, roaddrags or other road maintenance machinery having a mold board or blade, used in what is known as maintenance work, by the provision of a heavy double-edged and reversible cutting bar for smoothing and dragging the road, which may be easily and quickly applied in position at the lower act ve edge of the. usual moldboard or blade and of being rigidly held in position thereon, said cutter bar having a relatively wide bearing surface on the lower face thereof to run over theground forspreading and smoothing the road, and having bevelled or inclinedfront and rear faces to cause the rear edge to be constantly sharpened, as the bar is worn along its lower face, while the front edge is actively engaged. I l

A full and complete understanding of the invention may be obtained from a consideration of the following detailed description, taken in connection with the accom-i panying drawing forming a part of this specification, it being understood that while the drawing shows a practical form of the invention, the latter is not to be confined to strict conformity with the showing thereof, but may be changed or modified, so long as such changes or modifications mark no material departure from the salient features of the invention, as specifically pointed out in the appended claims.

In the drawing, in which similar reference characters designate corresponding parts throughout the several figures Figure 1 is a side elevation, partly in section, of a portion of a road grader and showing the improved cutter ba r applied to the moldboard thereof.

Figure 2 is a detail perspective view of a portion of the cutter bar and the angle iron for supporting, the same. v

In Figure 1 of the drawing there is shown a portion of one of the usual standards or hangers employed in road scraping or grading machines, and which have con nected .to their lower ends the usual moldboard 2, so that the latter may be elevated or tilted vertically, andat the same time may have its angular relation'to the line of travel changed, as desired.

The moldbo ard 2 which is curved, as shown, throughout its length, is pivotally connected near its lower edge to the lower ends ofthe standards or hangers 1, asshown at 3, and at the upper edge of the moldbcard, there is provided a pair of pivoted links 4 having a series of perforations for the reception of an adjusting bolt 6 whicl'i is adapted to traverses. suitable aperture in the standard to hold the moldboard the desired position. v

The lower edge of the moldboard is provided with a rcarwardly directed offset to constitute a seat 7 extending from end to end of the same, and provided intervals with apertures 8, said seat being thus lo cated at the front of the moldboard.

l-in angle connecting bar 9 of substantial- 1y qual length with the moldboard is adapted to have one of its wings located in the H aforesaid seat 7, with its outer or forward face substantially flush with the front curved face of the inoldboard, the said wing being provided with counterbored apertures 10, which register with the aforesaid apertures S, and ar traversed therewith by suitable bolts 11, the countersunk heads of which are located at the front face of the wing of the angle bar 9. I

The other wing 12 of the angle bar 9, which is arranged at anacute angle thereto, is thus directed towards the rear of the machine and in a horizontal. position, the same being provided with suitable spaced apertures for the reception of tap screws 13 which serve to hold the improved cutter bar 14 in position on the underside thereof.

The cutter bar 14 is formed of a relatively heavy and wide bar of hard steel, which is considerably wider than thick, the front wall 15 of the same being inclined Or beveled www as shown, to provide the front cutting edge 16 adapted to enter the ground and sever the mounds or high places during the process of grading or smoothing the roadway. The rear wall or face 17 of the cutter bar is likewise beveled or inclined so that the cutter bar may be taken off and reversed, thus giving a double surface cutting edgel The upper face of the bar is provided with proper threaded openings for the lower threaded ends of the tap screws 13, so that it is an easy opertion to apply the cutter bar in position or to remove the same for replacement.

In the use of the road grader in what is called maintenance work, it is not customary to remove much of the ground as in regular road building or excavating, and the broad surface of the improved cutter bar serves to smooth the loose earth or gravel as the same is drawn along the road and, by means of the front cutting edge, to sever and remove all mounds or high places during said operation and depositing the same in the low places. By reason of the relatively great thickness of the cutter bar, it will be seen that the same will last much longer than an ordinary cutter such as is in common use, and that the constant contact with. the eartn beneath and under the weight imposed on the cutter, that the front edge 16 will gradually become dulled while the rear edge is constantly being sharpened, thus providing a reversible, double-edged cutting bar and avoiding the necessity for removing the same for giving it a special grinding.

From the foregoing it will be seen that a simple and substantial improvement has been provided for embodiment into grading machines, which has especial advantage in the operati on of grading or smoothing road ways, the combined cutter and smoother being well calculated to render long continued use for the purpose without needing sharpening.

What is claimed is:

1. A road grader having a moldboard, said moldboard being shaped to form a seat at its lower edge, an angle iron adapted to be secured in the seat, and a cutter having means for connection to the angle iron and provided with a front and rear cutting edge.

2. A road grader having a moldboard provided at its lower ecge with a seat, an angular cutter-carrying bar adapted to have one wing thereof bolted in said seat, the other wing of the same extending to the rear, and co-extensive in length with the moldboard, a cutter bar having a front and rear cutting edge, and means for connecting the cutter bar to the lower face of the horizontal Wing.

3. In a road grading machine, a mold board having a depressed seat in the front face of the lower edge thereof, an acute angle bar adapted to have one wing secured in the seat with the other wing extending horizontally to the rear and from end to end of the moldboard, and a cutter bar adapted to be secured to the lower face of said horizontal wing and having bevelled front and rear sides to constitute a ground cutting edge in front and rear.

4. In a road grading machine having a moldboard mounted therein for adjustment relative to the surface of the road and provided with a longitudinal seat in its lower edge, an iron bent longitudinally to provide wings at an acute angle, one of said wings being secured in said seat to lie substantially flush with the front face of the moldboard, the other wing extending horizontally to the rear, a relatively heavy cutter bar adapted to be secured beneath the latter wing and having its front and rear faces inclined to provide a cutting edge at the front and a self-sharpening edge at the rear respectively, said front inclined face being substantially flush with the angle iron and moldboard.

5. A reversible cutter bar adapted to be connected to road graders or other road maintenance machinery by means of an angle iron, the latter having one wing resting flat upon the bar and extending longitudinally therewith, said cutter bar and angle iron being connected together at inter vals, said cutter bar having a front and a rear cutting edge and adapted to be reversed when either edge is worn.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature.

JAMES HENRY MOVEETY.