US1575814A - Grader - Google Patents

Description

March 9', 1926. 1,575,814

P. v. BURSON GRADBR Filed May 23, 1924 3 Sheets-Sheet 1 -Bu/T'S on 1. I v INVENTOR I wrmsss:

ATTORN EY March 9 1%26.

' 1,575,814 P. V. BURSON GRADER Filed May 1924 3 Sheets-Sheet 2 WITNESS:

.PJZBumsoro INVENTOR ATTORNEY March 9 ,1926.

, P. V. BURSON GRADER s Sheets-Sheet 5 Filed May 25, 1924 .PJZBurson I I INVENTOR WITNESS:

Patented Mar. 9, 1926.

UNITED STATES PRESTON V. BURSON, 0F MARYSVILLE, OHIO.

GRADER.

Application filed May 23, 1924. Serial No. 715,453.

To all whom it may concern:

Be it known that I, PRESTON V. Benson, a citizen of the United States, residing at Marysville, in the county of Union and State of Ohio, have invented new and useful Improvements in Graders, of which the following is aspecification.

This invention relates to a grader for roads and the like, the general object of the invention being to provide a grader with two sets of blades, each set being arranged in the shape of a V with the apcxes of the two sets oppositely arranged, so that the grader will move material in three dilferent directions in one trip. The front set will divide the material equally and move it to each side of the road and the second set will return some of the material to the center andfill up the low points which have been passed over by the first set.

Another object of the invention is to provide means for adjusting the blades as to their inclination. in a vertical plane.

A further object of the invention is to provide a pair of trucks for the central part of the device with means on one truck for adjusting the main frame vertically.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing my invention in detail. reference will be had to the accompanying drawings wherein like characters denote like or-eorresponding parts throughout the several views, and in which Figure 1 is a plan view of the invention.

Figure 2 is a side view. 7

Figure 3 is a section on line 33 of Figure 1. v

.Figure 4 is a section on line 4-4 of Figure 1. a

Figure 5 is an end view of the rear truck.

Figure 6 is a side view of portion of the rear truck.

Figure 7 is an end view of the front truck with parts in section.

Figure 8 's a section on ure 1.

Figure 9 is a section on line 99 of Figline 8-8 of Figure 1. y

In these views, A indicates the rear truck and B the front truck, these trucks supporting the central beams l which are preferably of angle construction and are connected together in spaced relation by the bolts and sleeves 2. A draft beam 3, preferably formed of two bars of angle iron which are connected together in spaced relation, is connected with the front truck by the fifth wheel arrangement 4 and to the central beams by the U-shaped post 5 which has its limbs fastened to the central beams and to which the draft beam is pivotally connected by the bolt (1. An upright 7, carried by the main beams, passes between the two members of the draft beam and acts as a guide in the movement of the p-arts.' The rear truck A is provided with an upright frame 8 in which 'is journaled the shafts 9 and 10 to which the cables 11 and 1.2 are" attached. The cable 11 passes downwardly and engages a pulley 13 carried by the main beams and then it passes upwardly and is connected to a part of the truck A. as shown at 14. The cable 12 passes over the pulleys 15 carried by the main beams over a pulley 16 on the draft beam and has its end attached to the front ends of the main beams, as shown at 17. Thus when the cables are wound upon the shafts the main beams will be lifted so that in this manner the main beams can be adjusted in relation to the ground. Shafts 18 and 19 are journaled in the top part of the frame 8 and these shafts carry the hand wheels 20 so that they can be rotated by hand and they carry the sproeketwheels 21 over which the chains 22 pass which engage the sprocket wheels 23 on the shafts 9 and 10 so that the movement of the shafts 18 and 19 by the hand wheels will be communicated to the shafts 9 and 10 to wind up and unwind the cables. The shafts 18 and 19 are each provided with the ratchet mechanism 24 for holding them in adjusted position. A set of blade carrying angle bars 25 are arranged in the front part of the apparatus and a set of blade carrying angle bars 26 arranged at the rear thereof. Each set is composed of two bars arranged in the shape of a V with the apex of the first set directed forwardly while the apex of the rear set is connected with the ends of the main beam. The bars are pivotally connected to the main beams so that they can be adjusted. A pair of cross beams 27 have their ends movably connected with the members 25 by the brackets 28 and a second pair of cross beams 29 have their ends movably connected with the members 26 by the brackets 30. The beams of each pair are provided with raised central parts 31 which are arranged over the main beams or sills 1 and support the nut members 32 through which the screw shaft 33 passes which has a handle 34: at its upper end and its lower end is connected to one of the bolts which passes through the main beams so that by turning the handle 34 the shaft 83 will be moved longitudinally and thus the knife carrying members will be raised or lowered to the desired angle to give the grade desired. The rear truck is provided with a platform upon which a man can stand while operating the handle 34 of the adjusting device for the rear set of blades. This same operator can reach the hand wheeis 20 for raising and lowering the central beams.

As shown in Figure 8-the blade 36 is bolted to the vertical flange of the angle bar which supports it and I prefer to make the blades with a pair of cutting edges so that it can be reversed when one edge has been worn to bring a new edge into use.

From the foregoing it will be seen that the main sill orbeams can be adjusted from the rear truck in relation to the ground and that the blade carrying bars can be adjusted to give the desired grade to the road. The rear blade carrying bars 26 are adjustably connected by the brace bars 36 with the main beams so that these rear members can be moved towards each other or away from each other. The front truck is preferably provided with a stub tongue so that the device can be easily backed. As will be seen the blades are of considerable length so that they will handle a large amount of material and prevent the formation of waves in the road. The front blades will divide the material and spread half of it to one side of the center of the road and the other half to the other side. Any material passing beyond the ends of the blades will be picked up by the rear blades and carried back towards the center and thus fill hollows that have not been filled by the first set of blades. The rear set of blades can be adjusted so that their ends will extend beyond the ends of the first set so as to pick up this surplus material or they can be adjusted to be on a line with the ends of the first blades. The two sets of blades will make it impossible for the apparatus to leave high places in a road and not to fill low places.

By making the blades of great length the grader will ride over low places and fill them with dirt which is carried from the high places. considerable material, a yard if necessary, and the long angle of the blade makes light draft. The action is practically automatic and does not require any attention after the parts have been properly adjusted.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the ((HlStlllCtlOIl and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What I claim is 1. An apparatus of the class described comprising a pair of trucks, a main beam, a draft beam pivotally connected with the main beam, and rotatably connected with the front truck, shafts rotatably mounted in the rear truck, a cable connected with one shaft and with the front end of the main beam, pulleys on the main beam under which the cable passes, a cable on the draft beam over which the cable passes, a second cable connected with the other shaft, a pulley on the main beam under which the cable passes, the other end of the cable being attached to the truck, manually operated means for rotating the shafts, blade carryingmembers adjustably connected with the main beam and means for adjusting the blade carrying members to a predetermined angle.

2. An apparatus of the class described comprising a central beam, trucks for supporting the same divergently arranged carrying members having connection with the central beam, a pair of cross beams having their ends movably connected with the blade carrying members, said cross beams having raised central parts, a screw shaft adjustable through the raised central parts and having its lower end connected with the central beam and a hand wheel at the upper end of the screw shaft whereby manipulation of the hand wheel will adjust the blade carrying members to a predetermined angle.

In testimony whereof I aflix my signature.

PRESTON V. BURSON.

The grader will also carry

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