US956744A - Road-grader. - Google Patents

Description

H, SUNDERMAN,

ROAD GRADER,

APPLICATION FILED SEPT. 11, 1909.

Patented May 3, 1916.

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v H. SUNDERMAN.

ROAD GRADER.

APPLIOATION FILED SEPT. 11, 1909.

Patented May 3, 1910.

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D gmwwioz, Sunder ANDREW a GRAHAM HENRY SUNDERMAN, OF MADISON, NEBRASKA.

ROAD-GEADER.

Application filed September 11, 1909.

Specification of Letters Patent.

Patented May 3, 1910.

Serial No. 517,338.

To all whom it may concern:

Be it known that I, ITENRY Sunnnnimn, a citizen of the United States, residing at Madison, in the county of Madison and State of Nebraska, have invented a new and useful Road-Grader, of which the following is a specification.

The invention relates to improvements in road graders.

The object of the present invention is to improve the construction of road graders, and to pr vide a simple, inexpensive and eliicient road grader, adapted to scrape the surface of a road and pack the dirt after the surface has been leveled and graded.

A further object of the invention is to provide a road grader of this character, equipped with a front scraping blade and a rear packing blade, adapted to be set in angular relation in order to eliminate side draft.

With these and other objects in view, the invention consists in the construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended; it being understood that various changes in the form, proportion, size and minor details of construction, within the scope of the claims, may be resorted to without departing from the spirit or sac riticing any of the advantages of the in vention.

In the drawings :Figure 1 is a perspective view of a road grader, constructed in accorcancc with this invention. Fig. 2 is a plan view of the same. Fig. 3 is a transverse sectional view, taken substantially on the line of Fig. 2. Fig. 4 is a longitudinal sectional view of the rear portion of the roar grader, illustrating the manner of niounting the rear lifting lever. Fig. 5 is a similar view of the front portion of the machine, illus rating the construction of the front lifting lever.

Li re numerals of reference designates corresponding parts in all the figures of the drawings.

The machine is equipped with a front scraper blade 1, set at an angle to the line of draft, as clearly illustrated in Fig. 2 of the drawings, and arranged in a vertical plane, but the front scraper blade, which is hinged at the top, is adapted to be adjusted backwardly and forwardly, as hereinafter fully described. The front scraper blade, which is constructed of steel, or other suitable material, has pivotally and adjustably connected to it at its forward end an adjustable and extensible section 2, set at the same angle as the front scraper blade 1, and having its inner portion fitted against the front face of the adjacent end of the blade 1 and secured to the same by a bolt 3. The belt 3 pierces the extensible section 2 and the front scraper blade 1, which is provided with a plurality of perforations a, to permit the adjustment of the extensible section. The extensible section is adapted to be moved inward or outward to vary the length of the front scraper blade, and it is provided at its lower edge with a forwardly extending inclined cutting edge or portion 5, adapted to run in gutters, and designed to scrape the dirt and trash therefrom. The extended cutting portion 5 may be formed integral with the extensible portion, or consist of a separate blade or piece, bolted or otherwise secured to the same.

The pivoted extensible section 2 is raised and lowered by means of an adjusting lever 6, pivoted by a bolt 7, or other suitable fastening device to the rear face of the front scraper blade, and connected by a bar 8 with an arm 9, secured to and extending upwardly from the extension section at the outer end thereof. The adjusting lever 6 is equipped with a spring actuated dog or detent 10, arranged to engage a toothed segment 11 and operated by a latch lever 12, mounted on the adjusting ever adjacent to the upper handle portion thereof. The toothed segment is mounted on the front scraper blade, and the adjusting lever, which enables the pivoted section to be readily moved upward or downward to arrange it in proper position with relation to the main section or scraper blade 1, is also adapted through the dog or detent and the toothed segmentto lock the extension section in its adjustment.

The front blade with its extension section is adapted to scrape and grade the surface, which, after being thus graded by the machine, is packed by a rear blade 13, arranged at the opposite angle to the line of draft, and disposed at an acute angle to the front scraper blade, and adapted to counteract the side draft due to the angular position of the front blade, whereby all side draft in the machine may be eliminated. The rear blade, which is also set at an inclination to pack the dirt, is of a length less than the front blade, and is connected with the front blade by longitudinal connecting bars 14 and 15, arranged in parallelism in rear of the front scraper blade and having front converging portions 16 and 17 to which the draft device is attached. The draft device, which may be of any desired construction, is illustrated in the accompanying drawings as consisting of a transverse doubletree or whiflletree 18 and rearwardly diverging rods 19, flexibly connected at their front ends J with the central portion of the whiflietree 18 by a chain 20, and provided at their rear ends with eyes 21, which are linked into perforations of the converging portions of the longitudinal connecting bars. The front converging portions 16 and 17 extend forwardly and downwardly, as clearly illustrated in Figs. 1 and 5 of the drawings. A team of any desired size may be employed for pulling the road grader, and the latter may be constructed of any size to adapt it to the character of the work to be performed.

The front and rear blades are equipped with upwardly extending bars 22 and 23, riveted or otherwise secured to the rear faces of the front and rear blades, and projecting above the upper edges thereof and having their upper ends 24 and 25 bifurcated to receive the longitudinal connecting bars, and

provided with eyes for the reception of front and rear pivot bolts 26 and 27, whereby the upper edges of the front and rear blades are hingedly connected with the longitudinal bars 14 and 15. The front and rear blades are also connected with the longitudinal bars by front and rear inclined braces 28 and 29, pivoted at their lower ends by bolts, or other suitable fastening devices to the lower ends of the bars 22 and 23, which have eyes 30 and 31 at their lower terminals. The upper portions of the front and rear inclined braces 28 and 29 are provided at intervals with perforations 32 and 33 for the reception of pivot bolts 34 and 35, which also pierce the longitudinal connecting bars. The longitudinal connecting bars are provided at their rear portions with a plurality of perforations 36 to receive the rear bolts 35 to increase the adjustment of the rear blade 13. The inclined braces permit the front and rear blades to be adjusted to position them properly, and they rigidly hold the same in their adjustment.

The extension section 2 of the front blade is braced by a rod 37, extending rearwardly at an angle to the front blade and connected with the extension 2 and with the rear blade. The bracing rod 37 is provided with a front attaching arm or portion 38, which is adjustably secured to the rear face of the extension section 2 by means of bolts 39 and upper and lower rows of perforations 40, formed in the extension section 2, as clearly illustrated in Figs. 1 and 3 of the drawings. The rear end 41 of the brace 37 is bolted or otherwise secured to the rear blade. Various other braces may of course be employed to provide a road grader of the desired strength and rigidity. The adjustable connection between the brace 37 and the extension section 2 permits the adjustment of the latter with respect to the main section or front of the blade 1, and the connecting bar 8 between the arm 9 and the adjusting lever 6 is provided at its inner end with a plurality of perforations 42 to accommodate the adjustment or extension of the section 2.

For the accommodation of the driver, the machine is equipped with a wheeled frame including a longitudinal reach 43, an arched axle 44 and inclined forwardly converging braces 45, connecting the end portions of the axle with the reach. The axle, which is equipped with suitable wheels 46, is secured by a clip 47 or other suitable means to the rear end of the reach, and the front portions 48 of the inclined braces 45 are provided with perforations 49, arranged at intervals and adapted to receive a bolt 50 to provide an adjustment for the rear axle and the wheels to assist in governing and eliminating the side draft. The reach, which has its front end 51 pivotally or hingedly connected with the upper edge of the front blade 1, has secured to it a seat support, preferably constructed of a single plece of bar metal, and

composed of a horizontal top portion 52 and front and rear standards 53 and 54. The seat 55 is adjustably secured to the horizontal portion 52, which is provided at intervals with perforations 56 for the accommodation of a seat bolt 57, or other fastening means.

The front portion of the machine is lifted by a lever 58 to drop the dirt collected by the scraper blade and also to enable the machine to cross bridges, culverts and other places smoothly. The front lifting lever 58, which is arranged in an upright position at the front of the machine, is pivoted at a point between its ends to the longitudinal connecting bar 15 by the adjacent bolt 34, and it has its lower end bent rearwardly and upwardly to form a curved fulcruming foot 59, presenting a rounded lower face to a runner 60. The rear end of the curved portion or foot 59 is connected with the upper portion of the lever by an inclined brace 61, but the lever may be constructed in any other suitable manner to provide the rounded fulcruming foot at the bottom. The runner, which consists of a thin metallic plate, has its front end 62 curved upwardly and bifurcated to straddle the lower end of the adjacent front bar 22 to which it is connected by a bolt 63, which also secures the lower end of the adjacent brace 28 to the said bar The front lifting lever 58 carries a spring actuated dog or detent G4, which engages a toothed segment 65 for securing the lifting lever in its adjustment. The toothed segment is mounted on and extends upward from the longitudinal connecting bar 15, and the dog or detent G l is controlled by a latch lever 66, mounted on the front lifting lever adjacent to the upper handle portion thereof and connected by suitable means with the dog or detent. The toothed segment 5 is preferably provided at the bottom with angularly bent forwardly and rearwardly extending arms 67, bolted to one of the side faces of the longitudinal connecting bar 15 and off-setting the toothed segment 65 from the said bar 15 in order to provide an intervening space for the front lifting lever 58.

The resiliency of the thin metallic runner plate, together with the hinge connection between the front end of the same and the front blade, permits the lifting of the latter by the lever 58. The rear blade may also be lifted clear of the ground by means of a rear lever 68, mounted on the reach and provided at its lower end with a short forwardly e2- tending arm 69, which is connected with a yoke of the rear blade 13. The yoke '70, which is approximately U-shaped, straddles the reach and, while it permits an upward and downward movement of the rear packing blade with respect to the reach, it prevents movement of the rear blade laterally of the machine. The sides of the yoke 70 are adjustably secured to the rear blade 13 by means of bolts 71 and perforations T2 to permit the adjustment of the rear blade to arrange it properly with respect to the front blade to eliminate the side draft. When the front blade is extended, through the adjustment of the extension blade 2, the position of the rear blade may be changed to suit the new adjustmentof the front blade. The rear lifting lever 68 is pivoted by a bolt 78 to an ear of a bracket Tet, which is equipped with a toothed segment 75, and the latter is engaged by a spring actuated pawl or detent 76 of the rear lifting lever. The pawl or dctent of the rear lifting lever is controlled by a latch lever 77, mounted on the rear lifting lever of the adjacent. portion thereof, as clearly illustrated in 1 of the drawings.

The rear end portion of the front blade is tapered outwardly and the lower edge 78 slopes or inclines upwardly. The adjacent end of the rear blade is similarly tapered to incline the lower edge 79 at the end portion thereof. The tapering of the blade enables the dirt collected by the same to be gradually discharged at that side of the machine.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A road grader including a front scraper blade arranged at an angle to the line of draft, a rear blade set at the opposite angle to the line of draft and arranged to counteract the side draft produced by the front blade, and a draft device connected with the front scraper blade intermediate of the ends thereof.

2. A road grader including a front transversely disposed scraper blade arranged in a substantially vertical plane, a rear transverse blade set at an inclination and extending downwardly and rearwardly and arranged to pack the dirt after the surface has been scraped by the front blade, and a draft device connected with the front scraper blade intermediate of the ends thereof.

8. A road grader including a front transverse scraper blade arranged at an angle to the line of draft and set in substantially a vertical position, a rear reversely arranged blade set at an angle to the line of draft and arranged at an acute angle to the front blade, said rear blade being also inclined downwardly and rearwardly to pack the dirt after the same has been graded or scraped by the front blade, and a draft device connected with the front scraper blade intermediate of the ends thereof.

4!:- A road grader including a front transverse blade set at an angle to the line of draft and provided with an extensible section, and a rear reversely arranged blade set at an opposite angle to the line of draft and adjustable transversely of the machine to arrange it to correspond with the adjustment of the front blade.

5. A road grader including a transversely disposed scraper blade provided with an ex tensible section pivoted to the scraper blade to provide a vertical adjustment, and adj ustable along the scraper blade to vary the length thereof.

6. A road grader including a transversely disposed scraper blade, and an adjustable section pivoted to the scraper blade and extending beyond the same and provided at its lower edge with a forwardly projecting cutting edge or blade extending below the lower edge of the scraper blade.

7. A road grader including a transversely disposed scraper blade, an extension section adjustably and pivotally connected at its inner end to the scraper blade and provided at its outer end with a projecting cutting edge or portion extending below the lower edge of the scraper blade, and means for raising and lowering the extension section.

8. A road grader including a transversely disposed scraper blade. an extension section pivotally connected at its inner end with the scraper blade and adjustable longitudinally thereof to vary the length of the scraper blade, an operating lever mounted at the scraper blade, and connecting means between the lever and the extensible section, said connecting means being adjustable with respect to the lever to correspond with the extension of the said section.

9. A road grader including a transverse scraper blade, an extensible section pivotally connected at its inner end to the scraper blade and adjustable longitudinally thereof to vary the length of the scraper blade and provided at its outer portion with an upwardly extending arm, an adjusting lever located at the scraper blade, and 2. connecting bar extending from the arm to the lever and adjustably connected with one of the parts to correspond with the adjustment of the extensible section.

10. A road grader including a straight front transverse scraper blade, and a straight rear transversely disposed packing blade, said blades being tapered at one side of the machine to form inclined or sloping lower edges for permitting a gradual discharge of dirt at that side of the machine.

11. A road grader including spaced transversely disposed blades, longitudinal bars hingedly connected with the blades to permit an adjustment thereof, and braces extending from the blades to the connecting bars for securing the former in their adjustment.

12. A road grader including front and rear transverse blades, upright bars secured to the blades and provided at their upper and lower ends with eyes, longitudinal connecting bars hinged to the upper eyes of the said bars, and inclined braces hinged to the lower eyes of the said bars and adjustably connected with the blades in their adjustment.

13. A road grader including front and rear transverse blades arranged at an angle to each other to counteract side draft, longitudinal bars having parallel portions connecting the blades, said bars being also provided with forwardly converging front portions, and a draft device connected with the front portions of the longitudinal bars.

14:. A road grader including front and rear transverse blades, longitudinal bars connecting the blades and having portions extending in advance of the front blade for connection with a draft device, and a centrally arranged wheeled frame connected with the front blade and adapted to receive the driver.

, 15. A road grader including front and rear transverse blades, means for connecting the blades, and av frame connected with the front frame and provided in rear of the rear blade with supporting wheels.

16. A road grader including front and rear transverse blades, means for connecting the blades, and a frame composed of a reach connected with the front blade, an axle supporting the rear portion of the reach, wheels mounted on the axle, and braces extending from the end portions of the axle to and adjustably connected with the reach to permit the axle to be adjusted with respect to the line of draft to assist in eliminating side draft.

17. A road grader including front and rear transverse blades, means for connecting the blades, a frame extending rearwardly from the front blade and provided in rear of the rear blade with supporting wheels, av support mounted on the frame, and a seat secured to the support.

18. A road grader including front and rear transverse blades, means for connecting the blades, a frame extending rearwardly from the front blade and provided in rear of the rear blade with supporting wheels, a support composed of a horizontal top bar, and front and rear bars secured to the frame, and a seat adjustably secured to the horizontal top bar.

19. A road grader including a transverse blade, a runner extending rearwardly from the blade, and a lever connected with the blade and supported by the runner and arranged to raise and lower the blade.

20. A road grader including a transverse blade, a runner extending rearwardly therefrom, and a lifting lever connected with the blade and having a rounded bottom port-ion fulcrumed on the runner and arranged to raise and lower the blade.

21. A road grader including a transverse blade, a runner consisting of a thin metallic plate connected at its front end with the blade, and a lifting lever also connected with the blade and having a rounded portion or foot fulcrumed on and supported by the runner and arranged to raise and lower the blade.

22. A road grader including a blade, a runner extending rearwardly from and hinged to the front end of the blade, a lever supported by the runner and connected with the blade and arranged to raise and lower the same, and means for securing the lever in its adjustment.

23. A road grader including front and rear transverse blades, means for connecting the blades, a runner extending rearwardly from the front blade, and a lever pivoted to the connecting means and supported by and engaging the runner and adapted to raise and lower the blade.

24. A road grader including front and rear transverse blades set at opposite angles to the line of draft to counter-act side draft, a wheeled frame connected with the front blade and extending in rear of the rear blade, and means for adjustably connecting the rear blade with the wheeled frame for changing the position of the said rear blade to arrange the same for eliminating side draft.

25. A road grader including front and rear transverse blades set at opposite angles to the line of draft to prevent side draft, a wheeled frame connected with the front blade and extending in rear of the rear blade, and a yoke movably connected with the wheeled frame and adjustably connected with the rear blade.

26. A road grader including front and rear transverse blades set at opposite angles to the line of draft to prevent side draft, a wheeled frame connected with the front blade and extending in rear of the rear blade, a yoke movably connected with the wheeled frame and adjustably connected with the rear blade, and a rear lifting lever fulcrumed on the wheeled frame and connected with the yoke for raising and lowering the rear blade.

2'7. A road grader including front and rear transverse blades, longitudinal bars connecting the blades, a centrally arranged wheeled frame connected with the frontblade and extending in rear of the rear blade, a rear lifting lever mounted on the wheeled frame and connected with the rear blade, a runner extending from the front blade, and a front lifting lever fulcrumed on one of the longitudinal bars and supported by and engaging the runner and arranged to raise ad lower the front blade.

28. A road grader including front and rear transverse blades set at opposite angles to the line of draft to prevent side draft, an extensible section adjustably connected with the front blade, longitudinal bars connecting the front and rear blades, and bracing rods adjustably connected with the extensible section of the front blade and extending rearwardly to the rear blade and secured to the same.

In testimony, that I claim the foregoing as my own, I have hereto affixed my signa ture in the presence of two witnesses.

HENRY SUNDERHAN.

lVitnesses JOHN TULLY, N. A. HoUsnL.

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