US2188435A

US2188435A - Disking device

Info

Publication number: US2188435A
Application number: US112201A
Authority: US
Inventors: Fred M Hargrave
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-11-23
Filing date: 1936-11-23
Publication date: 1940-01-30
Anticipated expiration: 1957-01-30

Description

3Q, 1949. -1 M, HARQRAVE 2,188,435 DISKING DEVICE Filed Nov. 23, 1936 3 heets-sheet 1 ATTORNEY.

INVENT OR. FRED M 17414 6754 Vi I BY ian. 30, F. M. HARGRAVE DISKING DEVICE v 3 Sheets-Sheet 2 Filed Nov. 23, 1936 INVENTOR.

FRED M. HARa/PA V15 BY 2 fiiwmfi a ATTORNEY.

F. M. HARGRAVE DISKING DEVICE Filed NOV. 25, 1936 3 Sheets-Sheet 3 INVENTOR.

F/PZD M A ARGPAVE 'BY Z ATTORNEY.

Patented Jan. 30, 1940 UNITED stares rarest oer-r g v 2,188,435 DISK'ING DEVICE Fred M. Hargrave, Cedar Rapids, Iowa- Application November, 23, 1936, Serial No. 112,201

7 Claims.- (01.; 37-445 v I It is another general object 'of my invention This invention relates to grader planersor disking machines and has particular relation to means for attaching a disking device to .a supporting and actuating structure such as a grader, a motor patrol or the like. I

It has been found that disking means, such as a plurality of concavo-convex disks, may be advantageously employed. in connection with graders-and. like structures for smoothing, scarifying, mixing and planing road surfaces and for cutting and disking earth and the like as set forth'in my Patent No. 1,996,676, granted April 2,1935.

Disking devices of this character have been employed in connection with graders in which a scraper blade or mold board is suspended beneath the machine by means of a blade supporting structure including a roughly triangular framework which is adapted to be raised and lowered to raise and lower the blade and a circle or a bull ring which permits the blade to be rotated to various positions for sidecasting material to one side or the other and for pushing the material straight ahead, as in scrapingor bulldozing operations.

In my patent above noted Ihaveprovided a disking means including a plurality of concavoconvex disks which are so supported and mount- .edin a unit that they may be substituted for the scraper blade whereby the grader may be used v for disking operations.

' I have found it very desirable, however, that the disking means be mounted on the supporting mechanism in such manner that the disking means may be used without removingthe scraper blade, and such that the disking means may be drawn up out of the way to permit the scraper blade to be used without dismounting the'disking means, and it is accordingly a general object of my invention to provide mounting means of this character,

In practicing my invention I preferably pro.- vide a standardized disking mechanism and then provide several fastening members which may be used interchangeably for fastening the disking means to the grader or like structure in several positions in front of and in back of themold board of the grader. One set of fastening means is adapted to support the disking means from the circle hangers or rams horns, which supports the mold board, and another set of fastening' means is adapted to support the disking means from the circle. The mounting of the disking means in these several positions consti tute some of the general objects of my invention.

to provide a new and improved means for mounting a disking means on aroad grader or the'like. Another object of my invention is to provide an improved means for mounting the disking device in relation to the blade supporting framework of a grader in such manner that the grader blade may be employed without removing the disking device from the machine.

Another object of my invention is to provide an improved means for mounting the disking means on the blade supporting framework of a grader or the like. I

One of the features ofmyinvention .is that the scraper blade itself may be employed as an additional stiffening means for the disking device.

Other and further features and objects of the invention will be more apparent to those skilled in the'art upon a consideration of the accompanying drawings and following specification,

wherein is disclosed a single exemplary embodiment of the invention, with the understanding, however, that such changes may be made as fall within the scope of the appended claims, without departing from the spirit of the invention.

Figure l is a view in perspective of a disking devicev and a mounting means therefor, as it appears when mounted on the blade supporting framework of a grad-er or the like. The disking means is-mounted to the rear of the scraper blade and may be raised and lowered as hereinafter described.

Figure 2 is a partial View in elevation of the device shown in Figure 1 and parts of the structure have been broken away to show the remain ing structure in greater detail.

.Figure 3 is a fragmentary view showing a modified means of spacing the yoke member fromthe rams horns rather than from the scraper blade as shown in Figure 1. I Figure 4 is a partial view in perspective'of the the yoke member to the upper edge of the mold board.

Figure 8 is a view in perspective of the disking means and means for mounting the disking unit directly on the circle without engaging it to the mold board, and

Figure 9 is a partial view in side elevation of the device shown in Figure 8.

Referring to the drawings and particularly to Figure 8 a grader or motor patrol structure commonly known to the art, includes a heavy framework, indicated generally at In, and in accordance with the usual practice, this framework is supported by tandem wheels (not shown) at the front thereof and at the rear by means of a pair of drive wheels (not shown), the operators' position being approximately over the rear Wheels and the motor (not shown) being mounted in front of the rear wheels and supported by the supporting framework It].

In devices of this character a roughly triangular, blade-supporting framework, indicated generally at H, is pivotally engaged to the frame members Ill near the front thereof and is adapted to be supported at the rear end of the triangular frame H and moved up and down by means of supporting members indicated generally at I2. These supporting members include screw-threaded jacks or the like, pivotally connected between the frame In and the blade supporting framework II.

The supporting framework II is adapted to engage and support in turn a circle or bull ring [3, which is suspended beneath the framework II, by supporting means which permit the "circle to rotate.

Rotation of the circle [3 isaccomplished by means of a geared circle drive indicated at I 4 and the circle drive is driven by means of a shaft IS in accordance with the usual practice.

The scraper blade or mold board I! is supported beneath the circle by means of a pair of hangers or ra'ms horns" l8, there being one of these horns on each side of the circle. The mold board is pivotally engaged to the lowermost ends of the rams horns by means of brackets l9, engaged to the rear of the mold board, and by pins 2|, which pivotally engaged the brackets and mold boards to the lower end of the rams horns.

The angle of incidence of the mold board I! may be adjusted by pivoting the mold board on the pivotal connection at H! and 2| and it may be held in any desired position by means of slotted arms 22, which are pivotally attached to the upper rear edge of the mold board by means of brackets 23 and pins 24. The slotted portion of the arm 22 is adapted to be adjustably engaged to intermediate portions of the rams horns [8 by means of bolts 26, which are passed through the slots 2'! in the arms 22, and which are threaded into the rams horns l8.

The structure so far described is one of the structures commonly known to the art and these devices are called by the general name of graders or road patrols. Obviously they are adapted for scraping operations only, including sidecasting of earth and snow and the like to one side or the other or pushing it ahead, which is generally termed a scraping or bulldozing operation.

It is my purpose to provide easily adjustable disking devices which may be readily attached in front of or to the rear of the scraper blade or mold board and which may be used either in conjunction with the scraper blade for disking material before or after the scraping operation is accomplished, or which may be dropped to a level below the scraper blade and held in this position so that the road patrol may be used for various disking operations without removing the mold board from the road patrol.

I preferably employ a one-piece yoke member such as illustrated more particularly in Figure 6 for supporting the disks. This yoke member 3| is comprised of a long channel-like member am having roughly triangular plate members 3H) and 3lc at the opposite ends thereof. These plate members are additionally braced by means of U-shaped brackets 3Id. The side plates 31b and Mo are provided with wide slots 31c and 3|) which are adapted to receive the through shaft upon which the concavo-convex disks are mounted. The end plates 31b and 310 are provided with a plurality of openings 31g at their lower edges for a purpose to be hereinafter more particularly explained.

The concave-convex disks 32 are mounted on a through-shaft 33 (Fig. 4) and are spacedby means of suitable spacers (not shown). The through-shaft 33 is square at that portion which engages the disks and the openings through the disks are also square in order that the disks may be caused to revolve with the shaft. The through-shaft is engaged at its ends in roller bearings, indicated at 34, and these roller bearings are supported within bearing cages 36, which are in turn mounted on the end plates 3 lb and 3 is by means of bolts 31. It is apparent, by inspection of Figures 4 and 6, that all that is necessary in order to remove the disk assembly from the yoke member is to remove thebolts 31 and let the disk assembly and shaft 33 drop down out of the slots 3Ie and 3!). End play of the shaft is regulated by means of lock washer 38 in accordance with the usual practice.

I-preferably utilize the disking unit just described as a standardized unit and provide various brackets and the like for mounting this disking unit in front of or in the rear of the blade and either on the blade or on the circle 2 and rams horn structures. The mounting means comprises substantially two types of devices, namely bracket means for pivotally engaging the yoke of the disking unit to the road grader, and link means for adjustably securing the disking unit in various positions of adjustment with reference to the scraper blade and circle. The face of the channel member 31a is provided with two pairs of spaced bracket members 41 (see Fig. 2), which bracket members are welded in spaced relation to the channel member am.

In fastening the disking unit to the rear of the scraper blade, as illustrated in Figures 1 and 2, I

preferably provide a pair of oppositely-disposed, roughly-triangular bracket members 42 which are provided with right angle flanges 43, the flanges 43 being adapted to be received on the rear sides of

angle iron brackets

44 and 36. These

bracing members

44 and 46 are used for bracing the horns I8, the angle iron M being a through member extending beneath the circle l3 and secured to it by means of oppositely disposed brackets 41.

The inner sides of the horns l8 are provided with angle iron brackets 38, which are bolted or riveted to the horns by means of rivets El and are also bolted or welded to the rear vertical faces of. angle irons 48. The members .45 are brace members secured at their inner ends to down; Likewise rotation ofthe circle j the member 44" and at the outer ends tothe supports 48.

The triangular brackets 42, stated, are-engaged" on therearsides'ofithemem- 'bers M- andfd, and plates 52 are provided at the front sidesof members and .46, theflanges 43 of brackets 62 being bolted to theseplates; thus clamping the flanges tightly against-the bracing members d l -and it.

In this manner; and by: means of a pivotal connection between the brackets 4 l-and the At times it is desirablethat'the" disking unit be raised above the lower or cutting edge of the more board I! and this is accomplished by the use ofclevismembers 53- andspacer rods 542. The clevis members 53 are pivot-ally engaged at their forward ends, by'means of" pins to brackets SFon therear'lower edge of the' mold board ll.

The clevismembers 53 are hollow and are adapted to receive the rods 54'. The; bent ends 540. of the rods; 56 are received'in' any of the the cutting edge of the mold board ll. When it is desired to use the disking unit, the spacer rods 54 are removed and the clevis portions 53aof the clevis members 53 are pinned to one of each of the openings 3lg, the disking unit thus being pivoted downward so that the lower edges of the. disks are well below the cutting edge of the mold board l1 and the disks may thus be made to engage the surface of the ground. The disking unit may be raised and lowered and rotated at will by the same mechanism used to raise and lower and rotate the mold board.

I may mount the disking unit onv the front of the mold board I! by modified forms of brackets such as illustrated in Figures 4 and 5. The brackets 4|, on the channel member 3|, are the same as previously described but a modified form of bracket is used in place of brackets 42. This modified form of bracket is illustrated more particularly at El in Figure '7 and comprises a pair of ear members Gla, joined by a plate Blb. The

ears are drilled to receive a through-bolt 62 which is received in the brackets M and thus the brackets 4| are pivotally attached to the disking unit. The bracket 5| is slotted, as indicated at Sic, to receive the upper edge of the mold board I! and in engaging the bracket 6| to the mold board, the brackets are placed on the mold board with the slots 6 is over the upper edge of the mold board and the brackets 6| are then locked in place on the mold board by means of set screws 63.

The means for holding the disking unit in raised or lowered position with reference to the mold board and circle is substantially the same as previously described and includes clevis members 53 in which rods 54 may be inserted. The brackets or ears 51a are placed on the front of the mold board andare a part of straps 64 which are secured to the front of the mold board, as by bolts 56, and these straps constitute means for engaging the cutting edge 65 of the mold board to the main portion ll of the board. It is apparent that the disking device may be held in raised position by inserting the spacer rods 54 in the openings 3lg and the other ends of the previously rodsin 'the cl'evism'embers 53 Whenit-isJnecessar-y' to use the disking unit, thero'ds 54: are ren'roved and the clevis members directlwengaged between the end: plates 3 l band: 3 10 and: the: mold board" l1.

have! illustrated, in Figure 8: and: 9, "armeans for supporting-the disking unitdirectly on: the circle without engaging the mold board: 11: and, in this, structure. the brackets 4 are ,pivotally engaged to suitable opposed bracket members .161

. These-brackets Eililike the brackets 45;; are sejcured directly to the. circle. Obviously the disk: ing device may'pi vot about onlthe brackets: H. as before. Substantially the same spacingmembers are utilized for holding the di'skingunit in raisedand lowered position: an-d these spacing means'includ'e c:levis "members- 58 and spacer rods 6'9. 'lli h'e r the rods E9 are inserted in theclevis mem hers: G3 the disking" unitis supported in the position showrrin Figures-8 a-ndYQ with the'lowere'd'ges ofi the disks above thecutting edge ofthe scraper blade I'I' When it is necessary-tense the disking v unit the spacer rods: 69": are removed and the clev-is members 68 engaged 'di'rectly in the open.- ingsdlg thereby rotating the disking unit to a position in which the lower edges of the disks are below the cutting-edge of the scraper blade. If necessary the scraper blade Hamay be pivoted on thepivotsZ-l with the upper edge of the blade close tothe' horns 18 so that the cutting edge 0 the blade is slightly raised. a I

It is possible to mount the disking unit, by means of the mounting device shown in Fige ure 1, so that. the disking unit does not engage the scraper blade at any point and this is accomplished by means of the modified structure shown in Figure 3'in which the clevis members 53a. are bent in S-shape so that they engage the pins 2| instead of the pins at 56. The disking unit, as shown in Figure 1, may thus be entirely disengaged from the scraper blade and the scraper blade removed if desired.

It is apparent that I have provided a simple and easily adjusted disking unit which may be readily assembled and disassembled and that I have provided a unit of this character which may be readily attached in front of or to the rear of the scraper blade or on the circle or horns of a motor patrol or like grader device. The disk ing. unit in all its positions of attachment, may be readily raised and lowered without the necessity of disturbing the mold board. It is apparent that modifications of my invention may be made by those skilled in the art. Such modifications may be made without departing from the spirit and scope of my invention as set forth in the appended claims.

I claim as my invention: 1. On a motor patrol, an earth moving an working device including a supporting structure, a mold board mounted on the supporting structure, a disking unit comprising a yoke member having end plates at either end thereof, the yoke member being adapted to carry the shaft of the disking device, the yoke member being provided the yoke member, and connecting means fastening the disking device to the supporting structure, said connecting means comprising bracket members adapted to connect with the hangers of the circle and spacing members adapted to rigidly connect the yoke and the mold board.

4. In a disking attachment for motor patrols, the motor patrol having a mold board. mounted thereon, the said motor patrols including a circle and depending hangers on the circle, a disking device including a yoke member, clamps connected to the hangers including, reinforcing members pivotally connected to the yoke, and spacing members engaged to the end plates of the yoke member and to the lower end of the mold board.

5. In a disking attachment for motor patrols, the motor patrol having a mold'board and supporting structure for same, the disking device including a yoke member and disks rotatably mounted on the yoke member, means for attaching the disking device at the rear of the mold the yoke to the supporting structure and spacing means attached to the rear of the mold board and to a portion of the disking device.

6. In a disking device for attachment to a motor patrol the motor patrol including a circle, rams horns, a mold board, and reinforcing members for the rams horns, means for attaching the disking device includingbrackets adapted to be engaged on-the reinforcing members of the rams horns and spacing members engaged betweenthe disking device and the rear of the mold board. a l

7. Ina motor patrol, an earth working device including a supporting structure, a mold board attached thereto, a disking device comprising a yoke and disks rotatably mounted within the yoke, means for pivotally attaching the yoke to the supporting structure, the ends of the yoke'opposite the pivotal point having a plurality of ad- ,justment holes, and other means including a-pivotally mounted bar connected with said adjustment holes and with the mold board for spacing the disking device about its pivotal connection whereby the disking device is'independently rotatable on the pivotal means to provide a plurality of positions for the disking device with respect to the supporting structure and the mold board.

- FRED M. HARGRAVE. v