US2183058A - Grader - Google Patents

Description

J. ANTOS Dec. 12, 1939.

GRADER Original Filed Feb. 7, 1934' 3 Sheets-Sheet l INVENTOR W m BY M Mwm ATTORNEYS mNMN RN 3 WM J. ANTOS Dec. 12, 1939.

GRADER Original Filed Feb. 7, 1934 3 Sheets-Sheet 2 INVENTOR ATTORNEY J. ANTOS Dec. 12, 1939.

GRADER Original Filed Feb. 7, 1954 3 Sheets-Sheet 5 W ATTORN EY$ INVENTOR m BY Patented Dec. 12, 1939 7 2,183,058

UNITED STATES PATENT OFFICE GRADER Joseph Autos, Aurora, 11]., asslgnor to WBSteFl'h Austin Company, Aurora, Ill.', a corporation Application February 7, 1934, Serial No. 710,099 Renewed May 7, 1937 8 Claims. (Cl. 37--l56) My invention relates to an improvement in The invention further resides in the combinagraders. tlon, construction and arrangement of parts illus- The object of my invention is to provide an imtrated in the accompanying drawings and, while proved grader structure for universal service in we have shown therein a preferred embodiment, road construction, road grading and highway it is to be understood that the same is susceptible 6 maintenance. of modification and change without departing More particularly, it is an object of my invenfrom the spirit of my invention. tion to provide a moldboard or blade construction In the drawings: and moldboard or blade mounting for a road ma- Figure 1 is a side elevation of my entire grader chine, whereby the moldboard or blade may be structure. l0

swung from a scraping position to a ditching and Figure 2 is a plan view of the gooseneck and ditch contouring position by manipulation from moldboard or blade supported thereby.

an operators platform upon the grader structure. Figure 3 is a rear elevation of my grader struc- Another object of my invention is to provide ture, with the moldboard or blade and the goosein a number of laterally adjustable mountings neck swung to a position for ditching and ditch for various parts of a road grader structure, contouring. facilities for a universality of movement of the Figure 4 is a section on line 4-4 of Fig. 1.

grader moldboard or blade to facilitate manipula- Figure 5 is a section on line 55 of Fig. 2. tion of the moldboard or blade from a central Figure 6 is a vertical section on line 6-6 in point of control or operators platform. Fig. 1. 20

Another object of my invention is to provide Figure 7 is a vertical section through the tubumeans at the operators station to control the lar king bolt and portions of the front axle and blade side shifting means, and the side shifting spindle control thereof. of the moldboard or blade can be of a uniform Figure 8 is a vertical section through the con- 26 rate and the ends of the moldboard or blade will trol devices and mounting members of the rear make a diagonal movement across the road while portion of the frame.

the grader is moving in a straight line forward. Like parts are designated by the same reference Another object of my invention is to provide characters throughout the several views. means at the operators station whereby the My grader structure is naturally divisible into 30 operator at the operator's station can side shift certain main structural parts, includ g the 30 the moldboard or blade on the blade supporting chassis or main frame and steering controls, a means without stopping the grader. rear frame mounting, a gooseneck adjustably sup- Another object of my invention is to provide ported with reference to the frame and various means at the operators station whereby the Control devices, and the moldboard or blade itself,

operator at the operators station can side shift With its m u t n d o l a s- 35 the moldboard or blade on its supporting means and the moldboard or blade will retain the same chasszs or mam frame angle in relation to the ground during the entire The general structure of my grader includes side shifting movement, this being accomplished a chassis or main frame [0 and supporting front 40 while the grader is in motion. wheels ll, mounted on spindles I I0, which in turn 40 Further objects of this invention are to proare secured to front axle l2, and supporting rear vide a construction of maximum simplicity, efwheels I3 mounted upon spindles M, which in ficiency, economy and ease of assembly and turn are secured to rear axle l5, providing for operation, and such further objects, advantages pivotal movement between the front and rear 5 and capabilities as will later more fully appear axles and the front and rear spindles, as will be and are inherently possessed thereby. clearly seen in Figs. 3 and 6.

Other means, than those described and shown The rear axle is of considerable length in comin this application, attached to the blade supportparison with the width of the rearward portion ing members and to the moldboard or blade of the main frame l0 and the main frame I0 is which can be controlled by the grader operator adjustable laterally, as will be clear from the de- 50 by control means located at the operators platscription hereinafter set forth. form for side shifting the moldboard or blade At the rearward portion of main frame l0 and on its supporting means during the forward supported above the rear axle I5, I provide an movement of the grader, can be used which. will operators platform It to which are extended all u come within the scope of this invention. of the control rods, shafts and hand wheels to 5;

2- provide for' central control of the various adjustable features of my improved grader and which are so important to my invention.

The forward portion of the main frame I0 is provided with a narrow cross head II into which a tubular king pin I8 is set. Upon this king pin the entire front portion of my grader structure is supported; and the front axle I2 with its bolster I9 is in universal ball connection with the king pin I8 at 34 to permit the frame I0 and the rear wheels to assume extreme degrees of angularity with respect to the front axle I2.

The king pin I8 is of tubular construction so that a front spindle control shaft 35 may extend through the king pin I8 to a universal joint I03, from which the shaft 35 extends in the form of a splined connection I04 to a worm 8. The worm 8 is in mesh with a worm gear I05 upon pinion shaft I06, and the pinion I01 shown in Fig. 6 is mounted on the shaft I06 and is in mesh with a gear sector block I08 mounted upon spindle bar I09. Therefore, in the rotation of the spindle control shaft 35 the pinion meshed with the sector block I08 is enabled to rock the frontwheel spindles IIO to a position comparable to that shown in Fig. 3, which discloses oscillation of the rear wheel spindles I4.

The front axle and king pin assembly likewise permits of complete freedom of steering movement under control, not only of a draw bar 20, but also under control of a steering bar 2I which is rigidly connected to the bolster I9 and is pivotally connected to the draw bar 20 adjacent the bolster I9 by means of a draw bar king pin 22.

At the forward end of the hinge section 2| of the steering bar 2| is a yoke 23 loosely forked over the draw bar 20. The steering bar 2I comprises two hinge sections 2| and 2I, the hinged joint of which is provided with worm wheel control including a hinge box 24, a worm wheel shaft 25, comprising virtually the pintle of the hinge, a worm wheel 26, a cross shaft 2! with a worm (not shown) in engagement with the worm wheel 26. The cross shaft 21 is provided with a worm wheel 28 in engagement with a worm 29 on steering control shaft 30, which is provided with universal joints 3| and a splined connection at 32. Shaft 30 is revoluble and extends to the control position upon operators platform I6 and is attached to hand wheel 9.

' When shaft 30 is rotated by hand wheel 9, the connections described above cause the worm wheel 26 to be rotated and with it the worm shaft 25 is caused to hingedly move the parts 2I and 2! of the steering bar 2|, thus causing the draw bar 20 to be disposed at an angle to the longitudinal axis of the entire grader mechanism and the reverse movement of shaft 30 by hand wheel 9 will cause steering bar 2| to return to normal position.

Rear frame mounting The rearward portion of the main frame I0 comprises a horizontal platform 50 which is built ,taining reduction gearing from which a control shaft58 extends upwardly to a convenient posia eaoue tion with respect to the operators platform I6. Rotation of the shaft 58 therefore will cause the rear portion of the main frame I0 and the platform 50 to be adjusted laterally within the limits of the length of the axle.

Gooseneck and gooseneck adjustment It will be noted that the main frame I0 is arched as clearly shown in Fig. 1. Under the arch of the main frame I0, space is provided for the universal mounting and adjustment of a gooseneck 60, yoked at its forward end for free swinging movement with respect to the cross head I! by means of an eye bolt 6|. Rearwardly the gooseneck 60 develops into a broad support for a circle 62 which is directly attached to the supporting means 90 for moldboard or blade 63, which is the principal working unit of the entire grader structure.

Under the arch of the main frame I0, I provide a gooseneck adjusting screw 64 which extends across the entire frame and is rotated by means of a gooseneck control shaft 65 extending upwardly and rearwardly to the operators position upon operators platform I6 and mounted thereon is hand wheel I. This shaft 65, through miter gears at 66, rotates the screw 64 and thereby adjustably positions laterally a nut 61 to which is universally secured at 68, in a splined connection, a broad gooseneck control plate 69 hingedly secured at its forward end to a gooseneck cross member I0.

At each end of the gooseneck cross member 10, a gooseneck swing link II is connected to the gooseneck height adjusting cranks I2, with shaft I3 which extends to a position adjacent the operators platform I6 where large control wheels 14 with appropriate worm and worm wheel connections provide means for the raising or lowering of the gooseneck 60 which is counterbalanced by means of springs I5 with cables I6 extending around sheaves TI to drums I8.

It will be apparent from the above description that the gooseneck 60 as to either side thereof may be raised and lowered by rotation of one or the other of the gooseneck control wheels I4 and that the gooseneck 60 may be swung laterally by rotation of the shaft 65 and screw 64 by hand wheel I, thus permitting the gooseneck 60 to assume the position indicated in Fig. 3, so as to dispose the moldboard or blade 63 at an angle for ditch contouring.

To control the angularity of the moldboard or blade 63 with respect to the longitudinal axis of the main frame of the grader. the circle 62 may be rotated upon its supporting means 4 of gooseneck 60 and a pin rigidly supported upon a bracket 8I by means of a cam 82, and control rod 83, so that the reciprocation of the rod 83 will cause the cam 82 to be adjusted to permit the pin 80 to drop into holes 84 of the circle 62. When the pin 80 is withdrawn from the holes 84, the circle 62 may be rotated to any convenient position.

Moldboard or blade supporting means Projecting downward and attached to circle 62 are arms on the lower ends of which is hung the blade supporting plate 9I by means of brackets 5 and 6 and pin I00 to permit oscillation of the moldboard or blade 63 and blade supporting plate 9|. Attached to the upper portion of the blade supporting plate 9| are sector arms ml with slots to receive the adjusting bolts I02 which pass through the arms 90 for the purpose of adlusting the moldboard or blade 93 and the blade supporting plate 9| to the proper cutting angl for the easy movement of material.

At the top and bottom of the moldboard or blade 99 are guideways 93 and 92 for attaching the moldboard or blade 63 to the blade supporting plate 9| and permitting endwise movement of the moldboard or blade 93 on the blade supporting plate 9|. On the upper guideway 93 and attached to the moldboard or blade 63 is rack bar 94. Mounted on blade supporting plate 9| is gear box 95-which consists of worm and gear 96 and gear 99. The gear 99 contacts and meshes with rack bar 94. Attached to the shaft of worm 96 is universal joint 86 and splined shaft 91. Bevel gears 91 and 99 are supported and attached to the gooseneck 69 by bevel gears support 99. Bevel gear 91 has attached thereto universal joint 96 to which is connected the splined shaft 91. Attached to bevel gear 99 is control shaft 95 which extends to the operators platform l6 and has attached thereto hand wheel 96 which controls the rotation of splined shaft 91. Revolving the hand wheel 96' and gear 99, which is engaged or in contact with the rack bar 94, will cause endwise movement of the moldboard or blade 63 on the supporting means 99 and 9|.

From the description set forth it can readily be seen that with the forward movement of the grader the operator on the operator's station |6 can simultaneously cause a sidewise movement of the moldboard or blade 63. It is important that this operation can be performed during the forward movement of the grader, as obstructions will frequently be found on the side of the road which necessitate the side shifting of the moldboard or blade 63 without changing the angular relation of the moldboard or blade 63 with the road. The grader moving forward and the operator side shifting the moldboard or blade 63 on its supporting means, will produce a diagonal movement relative to the line of movement of the grader.

The control of this sidewise movement of the moldboard or blade 63 on its supporting means by the operator on the operators platform l6 while the grader is moving is also very important where excess material is found which necessitates a quick endwise movement of the moldboard or blade 63 on its supporting means without changing its angular relation to the road in order to transfer this material to another point on the road, which requires more material than is ordinarily gathered by the moldboard or blade 63 in the usual straight-forward movement of the grader.

In cutting ditches, obstructions such as small trees and culverts are met and the side shifting of the moldboard or blade 63 on its supporting means is required to be done hurriedly and it is absolutely necessary to retain the same angularity of the moldboard or blade 63 with the road in order that the water will flow and also to prevent humps in the ditch, which is the case when the side shifting of the moldboard or blade 63 on its supporting means cannot be accomplished, as heretofore the only method of moving the moldboard or blade 63 in relation to the forward movement of the grader was to side shift the circle 62 and gooseneck 60 and in doing this the alinement of the moldboard or blade 63 with the road was changed.

It also appears that other important features of my invention are to be found in means for adjustment and control of the moldboard or blade 99 so that the moldboard or blade 99 may be adjusted from the position shown in Fig. 1 to the position shown in Fig. 3 by one man control from the control position upon operator's platform l6. To illustrate the sequence of movements of such adjustment and assuming that the moldboard or blade 63 is in the position indicated in Fig. 1, it would be possible for the operator on operators platform to initially rotate shaft 95 to cause the moldboard or blade 63 to slide endwise upon blade supporting plate 9| to the extreme left hand position under the influence of the rotation of pinion 99 in mesh with rack bar 99.

After the moldboard or blade 63 has been slidably moved to its extreme left hand position, the gooseneck control shaft, 65 may be rotated to cause nut 61 to move to the extreme left hand position upon screw 64, thus positioning the goo-seneck 69 in the extreme left hand position.

After this is done, or while this movement is in progress, the operator on operator's platform may move the gooseneck raising and lowering cranks 12 to the positions indicated in Fig. 3, thus depressing the right hand side of the gooseneck 69 and elevating the left hand side thereof.

Depending upon the particular demands of the situation in which the ditch contouring task is to be accomplished, as indicated in Fig. 3, the entire main frame IU of the grader may be shifted to the left or to the right with respect to the rear axle l5 as desired by the operator.

Under the requirements of the task as set forth in Fig. 3, the steering adjustments may be made through steering control shaft 39 to swing the draw bar 29 to the extreme right to permit the tractor or other motive power to travel at the extreme right out of the ditch.

I claim:

1. In a road grader, a blade arcuately curved upwardly and forwardly from a cutting lower margin, a narrow space bar and a wide angle iron comprising a channel-forming reinforcement for the lower margin of the blade, a narrow space bar and a wide rack bar comprising a channel-forming means spaced from the angle iron and a blade supporting plate receivable in the channels and comprising a mounting for the blade, said blade supporting plate being provided with means for mounting the blade upon the grader, and a pinion mounted upon said means for'engagement with the rack bar, whereby to adjust the blade upon the blade supporting plate.

2. In a road grader provided with a cradle and supporting arms depending therefrom, a blade supporting plate pivotally connected with the arms and provided with a pinion and reduction gear connected therewith, and a curved grader blade slidably mounted upon the blade supporting plate and provided with a rack bar in mesh with said pinion, whereby the rotation of the reduction gear and said pinion moves said rack bar and said blade slidably upon the blade supporting plate, said plate being curved to conform to the curve of the grader blade to provide a reinforcement therefor.

3. In a road grader comprising, a main frame supported for movement over the road, a circle rotatably supported by said frame for rotation in a substantially horizontal plane, moldboard supporting means and a moldboard slidably mounted thereon for endwise displacement supable gear to rotate the rotatable gear and produce endwise displacementof the moldboard during the movement of the grader.

5. In a road grader, a frame supported for movement, a member pivotally secured thereto for rotation in a substantially horizontal plane, a moldboard slidably mounted for endwise displacement on said member and generally across the line of movement of said grader, and means interconnecting'said member and moldboard for causing said displacement of the moldboard during the movement of the grader to effect a continuous and uniform diagonal movement of said moldboard relative to the line of movement of the grader.

6. In a road grader comprising, a frame supported for movement over a road, a circle mounted on said frame for rotation in a substantially horizontal plane, a moldboard slidably mounted for endwise displacement on said circle, and means providing a continuous uniform endwise displacement of said moldboard generally across the line of movement of said frame and during the course of movement thereof to produce a continuous and uniform diagonal movement of said moldboard relative to the line of movement of the grader, and said moldboard retaining the same angularity with the ground during its entire endwise displacement.

7. A road grader comprising, a frame supported for movement over a road, a circle support mounted on said frame for rotation in a substantially horizontal plane, a moldboard slidably mounted for endwise displacement on said circle support, and means providing a continuous uniform endwise displacement of said moldboard generally across the line of movement of said frame and during the course of movement thereof to produce a continuous and uniform diagonal movement of said moldboard relative to the line of movement of the grader.

8. In a road grader, in combination, a frame with an operator's station thereon supported for movement over the road, a circle rotatably supported by said frame for rotation in a substantially horizontal plane, a moldboard support and a moldboard slidably mounted thereon for endwise movement supported by said cirole, rotatable means mounted on the moldboard support engaging means on said moldboard, control means at the operator's station interconnected with said rotatable means to produce endwise movement of the moldboard during the movement of the grader.

JOSEPH ANTOS.

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