US1125514A - Disk-harrow. - Google Patents

Description

WQ S. GRAHAM.

DISK HAHRUW APPLICATION TILED MAY 8,1914.

Patented J an. 19, 1915.

3 SHBETSSHBET 1.

UVVE/VTU I M I ATTORNEYS W. S. GRAHAM.

- DISK HARROW.

APPLICATION FILED MAY 8, 1914.

Patented Jan.19,1915.

3 BHEETS-SHEBT 2.

.1. p a 4;.- I

. WITNESSES:

W. S. GRAHAM.

DISK HARROW.

APPLIUATION FILED MAY 8, 1914.

1,125,514. Patented Jan.19,1915.

3SHEBTS-SHEET 3.

. 5 1 60 4a? 70 67595 N 39 6'7 7 4a 66 W/TNESSES nnrrsn srArns WILLIAM S. GRAHAM, OF CANTON, ILLINOIS, ASSIGNOB T0 PARLIN & ORENDORFF COMPANY, OF CANTON, ILLINOIS, A CORPORATION OF ILLINOIS.

DISK HARROW.

Specification of Letters Patent.

Patented Jan. 19, 1915.

Application filed May 8, 1914. Serial No. 837,152.

To all whom it may concern Be it known that 1, WILLIAM S. GRAHAM, a citizen of the United States, and a resident of Canton, in the county of Fulton and State of Illinois, have invented certain new and useful Improvements in Disk Harrows, of which the following is a specification, reference being had to the accompanying drawings.

This invention .relates to disk barrows of the type employing two separate gangs of disks working side by side'and adapted to in angled more orless relative to'each other.

It is one ofthe objects of my invention to provide new and improved means for sup-- porting and controlling scraper blades and for giving them a swinging movement whereby the disks are adapted to be scraped during the operation of the harrow.

It is one of my-objects to provide improved means for throwing the scrapers out of contact with the cutters and for holding them in such inoperative position but ready for use when desired.

It is another object to provide improved means for locking the scrapers in operative scraping position in contact with the peripheries of the cutters.

It is one of the more specific objects of my invention to provide a single leverhaving two distinct operations. by one of which operations the scraping blades are held out of contact. with the disks and by the other of which operations the scraping blades are locked in position to engage the disks at or near their outer peripheries.

It is another object of my invention to improve devices ofthis type in sundry details hereinafter pointed out.

In the drawings. Figure 1 a pian view of a harr'ow embodying my improvements, having the drivers seat and the, weightbox'cs removed; Fig. 2 is a side elevation of my improved machine; Fig. -3 is substantially a section taken on lines 33 of Fig. 1 but with the Weight-boxes in position on-the' devices; Fig.4 is a rear elevation of one of the gangs, partly in section, the weight-box being removed; Fig. 5 is an enlarged vertical section through one of the gangs showing the scraper-blades in their normal positionadjacent to the centers of the disks;

Fig. 6 is a similar view but showing the scraper-blades inposition toscrapethe outer edges of the disks; Fig. 7 is an enlarged side elevation, partly in section, of one of the devices for mounting the scraping blades adjustably in operative position; Fig. 8 is an enlarged detail, beinga perspective view of the lever for adjusting and locking in position the disk scraper-blades.

Referring to the several figures of the drawings. in which corresponding parts are indicated by the same reference ch a racters,-.-. 20-2l indicate tvvo parallel bars constituting a short tongue connected at their rear ends to a transverse frame-bar 29. and connected at their forward ends to a bracket 23. The bracket 23 is supported by a truck comprising an axel- 2s and wheels 2526,

said truck being connected to said bracket manner upon the framework by means of a support Each gang of disks comprises a transverse bar 31 having depending fromits under face standards carrying at their lower ends bearings 34.35. respectively, in which is mounted a shaft 30 upon which the disks 3'? are mounted. said disks being spaced apart upon said shaft by suitable sleeves 38. Each of the cross-bars 31 has secured upon its upper face a weight-box 39 adapted to carry sand. or other suitable material, for increasing the downward pressure upon the disks for causing the device to runat the proper depth. Each of the bearings 34- 35 is adapted to have oil fed to it by a tube l0 extending downward thereto from an oilcup 41 mounted in suitable position in the sand-box 39.

Each of the gangs of disks is connected near its outer end to the main frame of the machine by means of two bars +2- ll The bars 43 are pivotally connected at their rear ends to the bearings 33, respectively, and are pivotally connected at their forward ends to the diagonally-positioned brace-bars 29. respectively, by means of bolts 44.-said bars 43 extending through suitable slots 45 in the vertical flange of the main transverse frame-bar 22, as best shown in Fig. 3. The

bars endowments attheir solire ends to the transverse bars 29, res ectively, by the said bolts 44 and extend therefrom in position overlying the bars 14,

'5 being connected at their rear ends to the transverse bars 31 of the respective gangs. I 46-47 indicate levers pivotally mounted upon the short tongue-bars 20- 21,.respec- 'tively, andadapted to be locked in adjusted position relative to circular rack-bars IS--49 carried by said bars. Said levers are connccted at their lower ends to the front ends of-bars BO BI, respectively, the rear ends of, which bars are pivotally connected to the bcarings'M ofthc respective gangs.

" SQ-53 indicate diagonally -,extending brace-bars connected at their rear ends to" the bars 31 of the gang frames und'connected at their forwar bye stroke 01. 'oneof the lovers 46 4? upon its release from the rack-bar 4M9, the cor-' responding gang will be angled through the mcdiumof the bar or link 50-51 relative to of a circle about such offset ends, which are revolubly mounted in brackets. co es car med-by the main transverse frame-bar 22. Keyed or otherwise fixed upon one end of the rod 54 is a lever 67 which is adapted to be adjusted in the ordinary way relative to 11'011'0111511 rack-bar formed upon said bracket.

As will be readily understood, by a stroke of the lever 57 in counter clockwise direction in Fig. 2, theorank portion of the rod 54 will be swung downward relative to the brackets 55--56.- As is best shown in said Fig. 2, the crank portion of said; rod directly overlies the bars or links 5M1, whereby a downward movement of such rod causes at the same time a downward movement of the bars or links 50-51 causin a like depres sion of the inner ends of t e angs. The bar 54 is provided with brac ets 58 559 mounted thereon engaging the outer faces of the bars SO-51, serving as means for eteadymg the gangs against undue lateral movement.

As Will be seen from an inspection of Fig. 2, when the lovers id-4:7 are 'vcu a stroke W in clockwise: direction in said figure, the lower ends of the levers are moved on the are of a circle about the axis upon which said levers turn. It would accordingly fol low, if no means were used to prevent it,

6 that as one of the levers was moved back rearwardlv v ends to the bars Ed -51, 20 respectively. As will be readilyundersto'od,

angs positively in do H and to. angle the. the correchange in the vertical adjustment of the inner ends of the gangs upon the operation ot the. levers 4. the lmks 51 are provided with curved interunahate port1ons,as clearly shownin Fi 22, the curvature bein such as to oli'set and equalize the vertical movement of the front ends of the links 50 -431. That is tosay,"ais thc- "frontcnd of the "link 51 is moved from its uppermostposition to its lowermost 'pbsition.*the link '51- would also .3

be shifted longitudinally of itself, bringin the link into suoh-aposition that the bar 5 I would'oierliethe uppermost point of curvature. Asthe leverfl was then moved in the same direction to the other extreme, these front end ofthe linki'ifwouldbe moved froi'njts lowermost position. again to its up permost'position, mnving'th-elink'51 longitudinallyofitsel'f still farther. in the same direction,:clian ing'the point of engagement I of the bar fittrom the uppermost curvature again to the normal. The-scrapingdevices by which the disks,

37iof eachg'ang arekept cleanare mount ed so as to beoperated in unison. For this as pulposc, each of the transverse" bars 31is provided with two brackets 64-+65, in the, outer ends of which is 'revolubly mounted a rock sluift '66. Upon eachvof the rock-shafts" f 66 are fixedly mounted a plurality of brack-' 10c ets 67, each carrying a scraper-blade 68 adapted to-be brought into engagementwith one" of the disks 37', as heremafter described. Fined upon the transverse bar 31 of each of the gangs is a bracket 69 10a through the'rear end of which the shaft 66 passes. Between ,the bracket '69 and the next adjacent bracketfi? there ismounted a coiled spring 70 tending to move said bracket 67 together with the rock-shaft 66 and partsmounted thereon away from the bracket 69 so as to hold the scrapers 68 nor-, mally in contact with the faces of the disks,

as will be seen from an inspection of Fig. 4.

As is also shown in saidfigure, one end of the spring 70 engages the transverse bar 31 and the other end engages a lug on the bracket 67 against which the spring bears. The spring is thus adapted to hold the rock shaft 66 turned normally to the limit of its 12 motion in counter clockwise direction in Fig. 5-in such position that the scraperblades 68 are held adjacent to the centers of the disks 3?.

One of the scraper-blades 68 of each gang is mounted upon its rock-shaft 66 by means of a device now to be described in lieu of one of the brackets 67'. As best shown in Fig. 7, 71-72 indicate two brackets pivotally connected together bymeens of a bolt 66.. The scraper-blade'68 is secured to the bracket 71 in the same position relative to itsdisk 37 andrelative to the rock-shaft 66 as if. it were Supported by one of the brackets 67.. The bracket 71 has pivotally connected to its forward end a foot-lever 75 which is held adjustably in position relativeto said bracket by means of a bolt 76 passing through a slot 77 in the bracket in rear of the ivot upon which said foot-lever is mounte As will be readily understood, by a downward stroke upon the lever 7 5 the rock-shaft 66 will be turned in clockwise direction in. Figs. 2, 5 and 6. causing all of the scrapers 68 to move in clockwise direction in said figures about the rock-shaft 66,

moving the lower ends of thescrapers out of the position shown in Figs. 2 and 5 adjacent to the centers of the'disks into on past-the position shown in Fig. 6 adjacent to the peripheries'of said disks. In order to limit the downward stroke of the lever-75, a set-screw 78 ismounted in the bracket 72 adapted to be broughtinto contact with the transverse bar 31. a

tionally in position against turning upon.

said bolt. Mounted upon thebracl et 69 is an arm 82 adjacent to the lever 79. As best shown in Fig. 1, the lever 79. is adapted to be .turned outward from the position shown at the right-hand side of said figure to the position shown at the left-hand side of said figure, bringing the arm 8341f said leverinto bearing upon the arm- 82 of the bracket and causlng the rocksh'aft 66 with the parts. carried .therebyto move outward against the action of the; spring 70, -'carrying the scrapers 68 out of. contact with thefdisks 37. As shownin thisfigure, the

lever 79 is adapted to be turned in thisway intoasubstantially centered locking p'osition, whereby the scrapers 68 are held out of contact with'the disks until the lever is again turned to its normal position as shownat the right in Fig. 1. The lever 79 has another function in addition to thatof holding the scrapers 68 out of contact with the disks 'as just-described. As best shown in Fig.8. said lever is provided with. an arc-shaped. cam-flange 84 the faces of which converge toward one endto approximately.

thetliickness of the lever.. When the footleveri 75 has been depressed as shown in Fig. 6', turning the scraper-blades into con-v tact wi th the peripheries. of: the disks 37,

the lever 79 can be given a stroke toward the center of the machine, bringing the lever 79' into position overlying the arm 82 and holding the rock-shaft 66 against being returned gages the arm 82, the position at which the scrapers 69 are held in this way relative to the peripheries of the disks being determined by the longitudinal position of the flange 84 relative to the arm 82, which is dependent'upon the extent to which the lever 79 is turned on its pivot-pin 80. I

By my construction and arrangement, the lever 79 is adapted to be moved into a selflocking position in one direction from the normal for holding the scrapers out of contact with the cutters, or into a variable looking position in the otherdirection from the normal for holding the scrapers swung against the action of the spring 70 away from the centers of the cutters into variable position opposite the. peripheries of the cutters.

W'Vhat I claim as nrv invention and desire to secure by Letters Patent, is-- 1; In a harrow, tllQCOlllbllltllllOl'l of a frame, a gang of reroluhle cutters mounted on said frame; scrapers for said revoluble cutters movable laterally of said frame, yielding means tending to hold said scrapers in contact with said cutters. and a lever pivotally mounted relative to said scrapers and movablelaterally therewith adapted to beswung laterally into a selfdocking position in engagement with the framework for holding the scrapers out of operative contact with said cutters.

2. In :1 ha iron". the combination of a gang of revoluhle cutters. a rock-shaft, scrapers for said revoluble cutters adapted to he moved laterally with said rock-shaft. yielding means acting upon said rock-shaft tend ing to hold said scrapers in contact with said cutters, and a lever movable-laterally with said rock-sl'ulft adapted by an opera tire stroke laterally 'to move said scrapers out otoperativo contactwith said cutters and adapted to he moved into a substantially-centered locking position for holding said scrapers out of opcrativecontact with said cutters.

3. In a harrow. the combination of a. gang of revoluhlc cutters. a rock-shaft, scrapers for said rcvoluhlc cuttersadapted to be moved laterall i with said rock-shaft. yielding means acting upon said rock-shaft tending to hold said scrapers in contact with said cutters. a lever pirotally mounted on said rock-shaft upon an axis at an angle to said shaft. and means adapted to be ei'igaged by said lever for moving said rock-shaft and said scrapers laterally to carry the scrapers out of operative contact with the cutters.

lawshaft and said scrapers laterally to carrv of'irevoluble cutters, a rock-shaft, scrapers for said revoluble cutters adapted to be moved laterally with said rock-shaft, yielding means acting upon said rockhaft tendaringto-ihold said scrapers in contact with said" cutters, a lever pivotally mounted on said! rock-shaft upon an axis at an angle to said' shaft, and means adapted to be engagedby said lever for moving said rocktheiscrapers' out of operative contact with the cutters, said lever being adapted to be moved into a substantially-centered locking positionfor holding said scrapers out of lau operatirecontact with said cutters.

' Inaharrow, the combinatio'n'of a gang of-re\-'oluble cutters. a rock-shaft, scrapers carried by said rock-shaft, yielding means acting uponsaid rock-shaft tending to hold :said scrapers in contact with said cutters,

and a lever pivot-ally mounted upon an axis to bear for forcing said shaft laterally of the machine for carrying said scrapers out of contact with saidcutters.

7. In a ha rrow, the combination of a gang 40"of revoluble cutters, a rock-shaft, scrapers carried by said rock-shaft, yielding means acting upon said rock-shaft tending to hold said scrapers in contact with said-cutters, a lever adapted to act upon said rock-shaft 45. to move said scrapers out of contact with said cutters, and means for holding said lever against turning relative to said shaft as said shaft is rocked.

8. In a liarrow, the combination of a gang 50,01 reroluble cutters, a rock-shaft, scrapers carried bysaid rock-shaft. yielding means acting upon saidrock-shaft tending to hold said scrapers in contact with said cutters, a lever adapted to act upon said rock-shaft to 552; move said'scrapers out of contact with said cutters, and frictional means for holding said leveragainst turning relative to said shaftas said shaft is rocked.

9. In a barrow, the combinatimi of a gang ;.of revoluble cutters, a rockshaft,scrapers carried. by said rock-shaft, yielding means acting upon said rock-shaft tending to hold saidscrapers in contact with said cutters, lever adapted to act upon said rocl'cshaft to move'sai' scrapers out ofcont'act with said cutters, and a spring adapted to frictionally engage said lever for holding it against: turning relative to said shaft as said shaft is rocked. v w

'10. In a harrow, the combination of a .70

frame, a gang of cu ttcrs revolubly mounted thereon, a rock-shaft revolubl mounted on said frame, scrapers carried y said rock shaft, yielding means acting upon said rockshaft tending to hold sai'dscrapers in 0011- tact with said cutters, an arm extending from said frame, a bracket fixedly mounted 3:: tact with said cutters, an arm extending from said frame, a bracket fixedly mounted on said rock-shaft adjacentto saidarm, and a lever pivotally mounted on said bracket adapted to be turned into engagement with said arm for forcing said'rock-shaft longi-j tudinally of itself against the action of said yielding means for carrying said'scrapers' out of contact with said cutters, said lever being adapted to be turned into a'substantially centered locking position for holding I said scrapers out of operative contact with I said cutters. 12. In a harrow, the combination of a gang ofv revoluble' cutters, 'a rock-shaft, scrapers movable with. said rock-shaft, yielding means tending to hold {said roc c-shaft turned in position with the scrapers adjacent to the centers of said cutters, a lever mounted on said shaft and having a' stroke longitudinally thereof and means for 'roclc ing said shaft for carrying said scrapers into contact with the peripheries of the cutters, said lever upon the rocking of said shaft be, ing adapted to be given an operative stroke 11 whereby. the shaft is held in turned position independently of the rocking means against the action of said yielding means.

13. In a harrow, the combination of a gang of rcvoluble cutters, a rock-shaft, scrapers movable with said rock-shaft, yielding means tending to hold said rock-shaft turned in normal position withthe scrapers adjacent to the centers of the cutters, means f(u".ro ':l-'.ing said shaft for carrying the scraper s'int'o contact with the peripheries of the cutters, a, lover having a stroke longitudina-llyl of said shaft, and an arni' normally "out .ofpositi'on for engagement said le-ll v. ver adapted to be engagdb said lever J I -gang of revoluble cutters, a rock-shaft.

'when the shaft has been rocked to carry 14. In a harrow, the combination of a' gang of revoluble cutters, a rock-shaft, scrapers movable with said rock-shaft,

yielding means tending to hold said rock-' shaft turned in normal position withthe scrapers adjacent to the centers of the cutters, a lever having a stroke longitudinally of said shaft, an arm adapted to be engaged by said lever as desired for holding the shaft against returning to normal position when the shaft has been turned for carrying the scrapers into contact with the peripheries of the cutters, and frictional means for holding said lever against turning relative to said shaft as said shaft is rocked.

15. In a harrow, the combination of a gang of revoluble cutters, a rock-shaft, scrapers movable with said rock-shaft, yielding means tending to hold said rockshaft turned in position with the scrapers adjacent to the centers of said cutters, a lever having a stroke longitudinally of said shaft, and means for rocking said shaft for carrying said scrapers into contact with the peripheries of the cutters, said lever upon the rocking of said shaft being adapted to be given a variable operative stroke whereby the shaft is held in variable turned position against the action of said yielding means.

16. Ina harrow, the combination of a gang of revoluble cutters, a rock-shaft, scrapers movable with said shaft turned'in normal position with the scrapers-adjacent to the centersof the cutters, a lever having a cam thereon adapted to have a'stroke longitudinally of said shaft, and an arm adapted to be engaged by said cam for holding the shaft against returning to normal position when the shaft has been turned for carrying the scrapers into contact with the peripheries of the cutters.

17. In a harrow, the combination of a scrapers movable with said rock-shaft, yielding means tending to hold said rockshaft turned in normal position with the scrapers adjacent to the centers of the cutters, a lever having stroke longitudinally of said shaft, said lever comprising a cam flange arranged on an are about its pivotal point, and an arm adapted to be engaged by rock-shaft, yielding means tending to hold said'rocksaid cam flange upon a stroke of said lever to hold said shaft in variable turned position when the shaft has been rocked to carry the scrapers into contact With the peripheries of the cutters.

18. In a harrow, the combination of a gang of .revoluble cutters, a rock-shaft, scrapers movable with said rock-shaft, yielding means tending to hold said rockshaft turned in position with the scrapers adjacent to the centers of said cutters, a lever pivotally mounted on said shaft adapted to swing longitudinally thereof and adapted when said shaft is turned carrying said scrapers into contact with the peripheries of the cutters to be swung to hold the shaft in turned position against the action of said yielding means.

19. In a harrow, the combination of a gang of revoluble cutters, scrapers for said revoluble cutters, yielding means tending to hold said'scrapers in contact with said outters adjacent to their centers, and a lever by a stroke of which in one direction said scrapers are adapted to be moved out of contact with said cutters and by a stroke of which in the other direction when said scrapers have been moved into contact with the peri 'iheries of said cutters the scrapers are adapted to be held in such position against the action of said yielding means.

20. In a barrow, the combination of a gang of revolublo cutters, a rock-shaft, scrapers carried by said rock-shaft, yielding means tending to hold said rock-shaft turned in normal position with the scrapers substantially opposite the centers of the cutters and in contact therewith, a lever carried by said rock-shaft, and an arm mounted adjacent to said lever, said lever being adapted by a stroke in one direction to be brought into engagement with said arm for forcing said rock-shaft longitudinally of itself against the action of said yielding means and adapted by a stroke in the opposite direction when said rock-shaft has been turned to bring the scrapers into contact with the peripheries of the .cutters to engage said arm to lock the scrapers against returning to position opposite the centers of the cutters.

WILLIAM S. GRAHAM.

Witnesses:

C. B. REED, \VILLIAM C. LIN'ION.

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