US2946145A

US2946145A - Rotary disc shoulder cutter

Info

Publication number: US2946145A
Application number: US673025A
Authority: US
Inventors: Paul L Winkel
Original assignee: Individual
Current assignee: Individual
Priority date: 1957-07-19
Filing date: 1957-07-19
Publication date: 1960-07-26
Anticipated expiration: 1977-07-26

Description

July 26, 1960 P. L. WINKEL ROTARY DISC SHOULDER CUTTER Filed July 19, 1957 2 Sheets-Sheet 1 Paul L. W/nke/ IN V EN TOR.

IIII IIIIII July 26, 1960 P. L. WINKEL 2,946,145

ROTARY DISC SHOULDER CUTTER Filed July 19, 1957 2 Sheets-Sheet 2 Paul L. Win/rel INVEN TOR.

WW EM ROTARY msc SHOULDER CU'ITER Paul L. Winkel, Glen Elder, Kans.

I Filed July 19,1957, Ser. No. 673,025

1 a 2 Claims. (Cl. s7--143 This invention relates to an attachment for an earth device to cut the high shoulder ofi a dirt or gravel road while maintaining the roads with the blade or moldboard of a grader or like machine.

An object of the invention is to provide an attachment for the moldboard of the grader, the attachment having a rotary disc which automatically cuts a smooth shoulder on the ditch at the side of the road as the moldboard smooths the roadbcd.

A further object of the invention is to provide an attachment for road grading equipment, wherein the rotary disc is capable of being controlled from the cab of the grader or corresponding position of a tractor or like piece of equipment. In this way the depth of cut is capable of being regulated in accordance with the judgment of the man operating the grader. An important feature of the attachment is its capability of being applied either to the right or the left side of a moldboard. This is achieved by a simple structural arrangement, the simplicity of the structure being such as to make it practical for interchange to right or left sides of a moldboard.

I have been made aware of various prior attachments for road grading equipment. However, none of these achieve the desired ends in a manner so simple as my invention, and none is capable of the combination of quick interchange from right to left side, remote control and also adjustment of pitch angle of the rotary cutter. Therefore, it is a further object of my invention to provide a unique attachment for road grading equipment and to provide an attachment which has rather wide application in connection with equipment other than road grading equipment.

Other objects and features of importance will become apparent in following the description of the illustrated form of the invention.

Figure 1 is a perspective view of an attachment constructed in accordance with the invention;

Figure 2 is an elevational view ofthe attachment in Figure 1 showing the same applied to a moldboard;

Figure 3 is a top view of the attachment in Figure 1;

Figure 4 is an elevational view of the attachment in Figure 3; and

Figure 5 is an enlarged sectional view taken on the line 5--5 of Figure 3 and illustrating principally the mounting' bracket by which the attachment is applied to the moldboard of the road grading equipment.

In the accompanying drawings there is a road grader fragmentarily illustrated and including a part 12 of the chassis, one wheel 14 and moldboard 16. The moldboard has a cutting blade 18 at its lower edge, although any type of moldboard may serve as the structural support for attachment 20.

My attachment is made of frame 22 that has an elon- United St tes metro f {working ,ormoving machine and more particularly to a):

plate 24 and connected at r Patented July 26, 1960 their upper extremities by a cross member 34. Bracket 28 is constructed of two

upstanding plates

36 and 38 which are also fixed to plate 24 and which are spanned at their top by cross member 40 that is welded or otherwise fixed in place. The upper part of the frame is formed by an upright 44 which is fixed to cross member 34 and a pair of braces 46 and 48 50 is fixed toupright 44 and constitutes a hanger for the hydraulic motor 52. This motor is preferably a hydraulic cylinder. 54 whose upper end is connected on pivot pin 56 carried by hanger 50 and whose piston rod 58 has fork .60 connected thereto. Pivot pin 62 extends through the .side of thefork and through an' opening in ear 64. L'IfhiS Jean is welded orothervyise'fixe'd to'the disc beam 66;"*

The beam extends through the

brackets

28 and 26 is straddled thereby and has its inner end mounted for pivotal movement on pin 70. The pin is carried by the sides of bracket 26 so that the beam is raised and lowered in accordance with the application of fluid or the removal of fluid from hydraulic cylinder.

Rotary disc 74 is mounted for rotation on its spindle and in disc bearing 76. The bearing is attached to the disc supporting arm 78 that is constructed of upper and

lower plates

79 and 80 whose inner ends rest on the top and bottom surfaces of beam 66. A group of holes the grader operator.

gated bottom plate 24 together with a pair of upstanding bifurcated

brackets

26 and 28 at opposite ends of the plate 24. Bracket 26 is constructed of two

plates

30 and 32 welded or otherwise secured to the top surface of 82 is formed in the top plate 79 and there is a hole in beam 66. Adjustment pin 84 is dropped into a selected hole 82 and the hole in beam 66 to reserve a selected angularity for the arm 78. The result is that there is a corresponding selection in the pitch of rotary disc 74.

- There are means connected with the frame 22 for supporting it on either end of the moldboard. These means consist in four lower mounting brackets arranged in

pairs

90, 91 and 92, 93. Each of this group is fixed to the lower plate 24 of the frame 22 and each has a shallow rib 94 which functions as a shim to bear against the rear surface of moldboard 16. There is a pair of

bolts

95 and 96 on one plate or side 38 of bracket 28, and a corresponding pair of bolts on the opposite side or plate 36' Bracket 98 is, then, 1

of the same mounting bracket. capable of being fastened to either side of bracket 28 inasmuch as it has a pair of properly spaced holes through which the

bolts

95 and 96 on either side of bracket 28 are adapted to pass. Bracket 98 consists of a strap 100 a board 16 and bracket offset 102 to tilt the bracket with respect to the moldboard. The purpose is to enable the disc 74 to under-cut, when desired. The lower end of the bracket may be mechanically connected by another bolt to the moldboard. This partially supports theat tachment on the moldboard. The remainder of the sup port is derived from boltswhich pass through the slots 106 in the pair of

brackets

90, 91 or 92, 93 which are selected depending on whether the attachment is applied to the right or left end of the moldboard 16.

In use the hydraulic fluid is applied to the fluid motor by manipulation of a control lever under the control of Therefore the ditch which is automatically trimmed or cut by rotary disc 74 is capable of being either deeper or shallower. The pitch of the disc 74 is regulated by adjustment of arm 78 as describedpreviously. Inasmuch as the attachment is capable of being applied to either side of the moldboard, it is versatile and need not be duplicated. A single attachment will care for right or left side working.

It is understood that various changes may be made without departing from the invention as claimed.

What is claimed as new is as follows:

.1. An attachment for a moldboard for cutting a smooth shoulder at one end of the moldboard on a road comprising a frame including an elongated base plate, a pair inf bifurcated upstanding brackets fixed ,on said plate at coppositeTendsithereof, a beam overlying and extending longitudinally'o'fsaid plate and straddled bysaid brackets withran inner end pivoted to one bracket for raising and lowering of the beam and an outer 'end projecting outwardly beyond said plate, a rotary'shoulder cutting disc later-ally adjustably, pivotally mounted on the outer end of thebeam, aihydraulic cylinder and piston rod for raising andlowering'the beam inclining upwardly and rearwardly of said beam with the piston rod operatively pivot- :ally connected tothe beam, means mounting said cylinder 'forraising and lowering together with the piston rod to compensate-for raising and lowering of the'beam com- :prising 'an upright ontop of one bracket having alateral -:upper arm to whichsaidcylinder is terminally pivoted, and a pair of brace bars inclining downwardly from said upright and fixed to the top of the other bracket, said plate having means thereon for attaching the frame to a moldboard.

2. The combination of claim 1, said last named means comprising a pair of brackets on said plate at opposite sides thereof, the pairs being selectively attachable to a moldboard to attach the frame to a moldboard in reversed positions.

References Cited in the file ofthis patent UNITED STATES PATENTS 542,483, Linthicum July 9, 1895 379,970 Kruse Feb. 25, 1908 2,561,032 Onfrey July 17, 1951 2,646,633 Iahn July 28, 1953 2,740,214 Collins Apr. 3, 1956 2,762,285 Yetter Sept. 11, 1956 FOREIGN PATENTS 4,382 Australia Oct. 22, 1926