US1517659A - Disk harrow - Google Patents

Description

Dec. 2, 1924. 1,517,659 F. C. WARNE DISK HARROW Filed Deo, lO 1917 4 SheetS-Sheet l Dec. 2, 1924 1,517,659

F. c. WARNE DISK HARBOW Dec. 2, 1924. 1,517,659

F. c. WARNE DISK HARROW Filed DeO. lO, 1917 4 Sheets-Sheet E Patented Dec. 2, 1924.

PATENT OFFICE.

FREDERICK C. WARNE, 0F MANSFIELD, O'HIO.

DISK HARROW.

Application led December 10, 1917. Serial No. 206,533. y

To all whom 'it may concern.

Be it known that ll, FREDERICK C. 'WARNE, a citizen of the United States, residing at Mansfield, in the county of Richland and State of Ohio, have invented certain new and useful ltmprovements in Disk Harrows, of which the'following is a specification.

My invention relates to improvements in disk harrows, and more particularly to that class or type known as double or tandem disk harrows in which front and rear units are employed, each unit embodying a pair of adjustably mounted rotary disk gangs adapted to be angled or turned in opposite directions relative to each other and to the'line of draft as disclosed for example in my Patent No. 1,189,890, of July 4th, 1916,

This invention further relates to that class or type of double disk harrows known as engine disk harrows, the present improvements being particularly designed and' adapted for use in connection with an engine or tractor, and with this end in view,

"- my improvements relate particularly to improve draft connections for such implements and means whereby the disk gangs thereof may be readily moved to and sccured in any desired angular position relative to each other and to the line of draft by the operator of the tractor while in the seat or cab of the latter, the construction and arrangement of the parts being such that when the disk gangs are locked in their normal Working or fully angled position,

or in an intermediate angled position, and are relatively released or unlocked by the operator while the tractor is in motion, such disk gangs will automatically assume through such draft connections their nonworking or non-angled transporting position, or less angular working position, as the case may be, and as the operator may elect, and may be stopped and locked in such elected position while the tractor is in motion. Furthermore, if desired, the disk gangs may be manually moved to a more angular or to a fully angled working position while in motion with a minimum expenditure of energy by the operator, and they may also be readily and quickly moved manually in a straightening direction by the operator as desired when the implement is at rest.

, A further object is to provide a generally improved leverless disk harrow of this class having its parts so constructed, arranged and disposed relative to each other as to give the requisite strength, flexibility and general adjustability which experience and the varying demands of actual service have shown to be necessary or desirable, and to this end l provide two draft or reach bars pivotally connected to the rear unit or section and extending forwardly and in converging relation to each other and pivotally connected to the front unit or harrow section at two points equally distant from the longitudinal center of the harrow or line of draft as disclosed in my said patent hereinbefore referred to.

wWith the above mentioned and other ends in view, the invention consists in the novel construction, arrangement, and combination of parts, hereafter described, illustrated in one of its embodiments in the accompanying drawings, and .particularly pointed out in the appended claims.

Referring to the drawings, forming a part of this specification, Figure 1 is a top plan view of a disk harrow constructed in accordance with this invention, the disk gangs being in their non-working-or nonangled transporting position, the gang angling or controlling hand wheel being removed, and certain portions of the draft connections being broken away and shown in section for the purpose of clearer illustration of the parts.

Fig. 2, a similar view, the disk gangs being in their eXtreme angled or working positions, the central or relatively movable draft block and its connected draft and reach bars attached to the inner ends of the front disk gangs and to the pivoted portions of the rear disk gangs, respectively, being in their relatively rearmost positions.

Fig. 3, a detailed perspective view of the movable draft block and its connections disassembled.

F ig. 4, a perspective View of the front draft frame and its relatively movable draft block and connections, together with the controlling and operating mechanism therefor, the disk gangs being shown in their non-angled or transporting position.4

Fig. 5, a central longitudinal sectional view of the same Fig. 6, a similar view, the draft bar being shifted to its rearmost position to permit its draft connections to Vshift in a like direction and permit the disk gangs connected there lower end of the controlling shaft and its bearings 'and operating pinion in disassembled position. Fig. 9, a perspective view of the draft rack and bar, detached.

Fig. 10, a perspective view of the hand wheel locking bar ordetent, detached.

Similar numerals of reference designate like parts throughout all the figures of the drawings.

The improved harrow or tillage implement comprises a front harrow section or unit and a rear or trailing harrow section or unit. The front and rear harrow sections or units maybe ofany suitable or conventional form and for thepurposes of 1llustration I have shown my improved draft appliance and its connections.v applied t0 or embodied in a double or tandem disk harrow of the general form of that disclosed in my former patent hereinbefore referred to.`

The front harrow section or unit is provided with a suitable draft frame consisting, in the 'present instance, of a transverse bar 1, and a curved draft frame member'2, the latter having its forward middle portion se-, cured to a sub-pole 3, which latter is made up of s aced angle bars secured at their 40 rear to the transverse bar or member 1, and, lin the present instance, formin" a. guide or slideway Afor the improved longitudinally movable draft appliance hereinafter described.

As a means of connecting the draft frame to the front disk gangs 4, draft bars or links 5, are pivotally connected to filler blocks 2, said draft bars extending rearwardly beneath `the transverse bar 1, andbeing flexibly connected to axle boxes 6, somewhat beyond the centers ofthe disk gangs so that the inner ends of the latter will normally have a tendency to swing rearwardly and assume a rearwardly conver ing position. Asa means ofsupporting and maintaining the draft bars 5, 1n proper horizontal relation tothe transverse bar 1, supporting clips are pivotally mounted upon the fillerA blocks 2, and are secured by meansof the vpivot'bolts 5, securing the forward ends of theV draft bars 5, said clips 7, extending rear# wardly and being secured to the top intermediate ortions of the bars 5, by means of pivot bo ts 7, and as a further means of securing the draft frame to the front disk `by means of sup ably secured to axle gangs draft bars or links 8, are connected by Ithe pivot bolts 5, above the supporting clips 7, and extend upwardly and rearwardly and are liexibl17 connected to the upper or transverse bars 9, of the front gang frames by means of pivot bolts 9a. The gang frame bars 9, are connected to the disk gangs 4, orting bracket or brace members 9", exten in downwardly and suitoxes 9.

The bars 9, of the gang frames are provided, in the present instance, with scrapers 10, extending along the concaved sides of the disks of the disk gangs and held in proper spaced relation to each other by means of bars 10a.

The rear harrow section or unit, in theV connected to the gang frames 12, of the rear gangs. In the present instance, the gang frames 12, are also provided with Scrapers 15, similar to the scrapers 10, of the front gang frames. It will also be observed that the ivot or swivel bolts 14, are located be yond) the centers of the rear gang frames so that the inner ends of the rear gan s will have a tendency to swing rearward y and assume a rearwardly converging angle when permitted to swing on their pivots 14.

As a means of connecting the inner ends` of the rear sections, longltudinally extending draft bars 16, are provided, said bars being connected at their rear endsto eye members 16, of the gang frames, and being also provided with brace lmembers 16", suitably secured to the bearing axle' blocks at the inner ends of the rear gangs, the forward ends of the bars extending downwardlyy and, in the present instance, being' connected to the transverse bar 1, of the front draft frame by means of bearing plates 17, adjustably secured to the bar 1, by means of securing bolts 17, the depending rounded or bearing portions 16, of the draft bars 16, being adapted to have a limited movement yin the 'bearin plates 17, as in turning corners, and the like, by being mounted in slots 17", of the plates 17 As compared with tlie movements of the draft bars "attached to my im roved draft appliance hereinafter describe these draft bars 16, together with the draft bars or links 5 and 8, may be described asbeing longitudinall fixed relative to the frame members an in order that the functions of the iis (Figs. 5 and 9) adapted to receive the mally .a part. The pawl 27 may` draft appliance and its longitudinally movable draft bars may be performed as hereinafter described. f c

I shall now refer to the improved draft appliance and its gang connecting, adjusting and controlling mechanism. This improved draft appliance comprises a longitudinally movable draft member or.'element,

mounted, in the present instance, in the stubpole 3, of the draft frame, and consisting, in the present instance, of a draft block or head 18, adapted to slide between the angular members of the stub-pole 3, said block 18, being controlled by a longitudinally movable draft lbar 19, connected, in the present inst-ance, to a draft yoke or clevis 20.

The bar 19 is provided with a slot 19 pin l8a secured to the sliding blockA 18. The draft clevis 20 is provided with a rack 20a with which meshes the pinion 24 upon the lower end of the vertical shaft 21 (Figs. 5 and 8). mounted in bearing blocks` 23 secured lto the stub pole 3 by means of bolts 23x1 (Fig. 8), and the upper end in the bearing head 26 supported by .bracket arms 25 extending from the frame. I

To the Aupper end of the shaft 21 is secured the hand wheel 22` and the ratchet 22, with which the pawl 27, beveled at 27", cooperates. This pawl is mounted in the opening 26l of bearing head 26 and is norpressed upward by spring 27@1L into contact with the ratchet teeth to prevent the rotation of the ratchet, shaft, hand wheel, pinion 24, etc., in a contra-clockwise direction as viewed in Fig. 4. In other words, the pawl and ratchet mechanism normally prevents the forward movement of the rack 20 and the draft clevis 20 of which it forms however, -be withdrawn from the ratchet 22a, and the draft clevis thus released for forward movement, by manually swinging the pivoted camheaded lever 28 into a horizontal position as shown in Fig. 7 The hand wheel 22 and n the releasing lever 28 are so positioned that they may be manipulated by the person who is operating the tractor without moving from his seat.

As above stated, the outer portions of the front gangs are connected t0 the draft frame by the draft bars or links 5, and the inner ends of the rear gangs are similarly connected to. that frame by the draft bars or links 16. The inner ends of the front gangs and the outer portions ofthe rear gangs are not connected directly Vto the draft frame but to the sliding head 18 which is mounted on the stud pole as above described. The

connections from the sliding block 18 to the inner ends of the front gangs comprise the longitudinally movable draftbars 29, which are connected to the gangs through the me- The lower end of this shaft is y.ing swivel eye bolts v of the draft `spectively,

dium of the pivot bolts 29a, secured to the inner axle boxes 9. The draft connections leading from the draft block or head 18, to the rear gangs and draft frame comprise rearwardly diverging draft or reach bars 30, the latter, in the present instance, being pivotally connected to the pivoted portion of the rear gangs by means of bearing plates 31, and bearing `bolts 31a, said bearing plates 31, being suitably secured to the gang frames'12, and surrounding the pivot bolts 14, and by reason of this construction it will thus be seen that the draft or reach bars 30. are indirectly connected to the outer ends of the rear barrow frame 13, and it will also be observed that the rear ends of the draft or reach bars 30, are provided with down wardly and rearwardly extending brace members 29h, suitably secured to the central axle bearing boxes of the rear disk gangs.

The forward ends of the draft bars 29, and 30, may be pivotally or iiexibly secured to the draft block or head 18, in any suit-- able and convenient manner, such connecting means, in the present instance, compris- 32, passing through suitable openings in bearings plates 18h, secured to the lupper and lower sides of the draft block or head 18, by means of securing bolts 18", and bearing, in the present instance, on the upper and lower sides of the stub-pole 3, and as a means of conveniently connecting the forward or depending ends bars 30to the eye bolts 32, cross bearing bolts 33, may be provided to extend through the eyes of the bolts as shown. As a convenient mea'nsof pivotally connecting the forward ends of the draft bars 29, to the block or head 18, the latter may be provided on its under side with a bearing plate or bracket 18d (see Fig. 3), said plate 18d. being provided at its sides with upturned bearing ears or lugs 18e, extending on the outer sides of the stub-pole and provided with bearing bolts 18f, through the medium of which the forward ends of the draft bars 29. may be readily attached.

Uponv reference to the construction herein shown and described it will be seen that the draft bars 5 and 16, extending from the draft frame connect to the pivotedand inner ends of the front and rear disk gangs, reandare subsantially longitudinally fixed relatife to the front and rear barrow frames, while the draft bars 29 and 30, leading from the draft block or head 18, and connected to the inner and pivoted portions 0f the front and rear disk gangs, respectively, are longitudinally movable relative to said draft frame and said draft links 5 and 1G, connected therewith.

By reason of the construction above dethe movement of the tractor or other draft power employed, and without leaving his station. Thus, if the gangs are straight or atan angle less than that desired, the operator may back the tractor or other power source and thus back the draft clevis 20 an amount corresponding to the desired angle. He may then advance the tractor or other power source and by so doing throw the gangs into the angle set. So, also, if while the gangs are angled the tractor or other power source is backed to such an extent as to back the entire harrow, the gangs will straighten, but will normally be again angled on the next forward pull. To straighten the gangs on a forward pull, it is necessary merely to release the pawl 27 by manipulation of the handle 28 which is readily accessible from the drivers seat.

I shall now describe the operation of my harrow more in detail. First assume that the gangs are in their straight or non-working position as illustrated in Figs. 1, 4 and 5. The clevis 20 is then in its foremost position and the pin 18iof head 18 is at the 'rear of the slot 19a of the clevis. To set the angle into which the gangs are lto be thrown the clevis 20 is now backed, either bythe draft power or manually through the hand wheel 22,01' otherwise. For a full angle it is moved completely back into the position shown in Fig. 6 where the pin 18a is at the front end of slot 19, The pawl and ratchetmechanism 22, 27, movement of the clevis. But if now pulling lforce is applied to the clevis, the clevis is prevented by the pawl and ratchet from moving forward relative to the stub pole. As a result the entire harrow is advanced. In the advance of the harrow the resistance of the ground retards the portions of the gangs which are connected to the slidable head 18 and which are therefore free to move rearwardlyrelative to the draft frame (i. e., the inner ends of the front gangs and theouter portions of the reargangs). This retardation, accompanied by the relative rearward movement of the sliding head 18 continues until the pin 18a of the head abuts against the rear end of the slot 19al of the clevis, or, in other words, until the gangs have attainedl the angle for4 which the clevis was set.' Fig; 2 illustrates the position of the parts after the gangs have been thrown into full angle in the manner above described.

If, with the parts in the position shown in Fig. 2, the harrow is backed, the inner ends of the front gangs and the outer portions of the rear gangs, being connected to the sliding' head 18 which is n'ow free to move forwardly relative to the draft frame, will'be yretarded by the resistance of the ground and will therefore move relatively forward until the pin 18a abuts againstthe forward end of the slot 19% When this occurs the parts allows this rearward.

will be in the position of Fig. 6, and the rangs will be straight. lVhat I have just described is the straightening of the gangs in backing, and is just the opposite operatioi1 from angling the gangs by a forward pu Another way of straightening the gangs is by releasing the pawl 27 and applying a forward pull to the draft clevis. Thus, if the pawl 27 is released by the hand lever 28 with the parts in the angle position shown in Fig. 2, a forward pull applied to the draft clevis will pull forward the block 18 on the stub pole and with it the inner ends of the front gangs and the outer portions of thc rear gangs. In this way the gangs may be returned to the straight position of Fig. 1, or their angle may merely bereduced, depending upon how long the pawl is held out of engagement with the ratchet.

From the foregoing description, taken in connection with the accompanying drawings, the operation and advantages of my invention will be readily understood.

Having thus described one of the embodiments of my invention, what I claim and desire to secure by Letters Patent, is,-`

1. In a tillage implement, a plurality of tillage gangs arranged in front and rear pairs, and relatively longitudinally fixed and movable draft connections. flexibly connected to the inner and tions of said front and rear pairs of gangs and means for actuating the movable connectionsby the forward draft on the implement for angularly adjusting the gangs.

2. In a tractor drawn tillage implement, tandem frame units and angularlyl adjustable tillage gangs carried thereby, and relatively adjustable draft means flexibly connected to said frame units and gangs and movable by the forward draft-of the' tractor for adjustingthe relative ositions of said frame units and gangs whi e in motion.

3.v In a tractor drawn tandem tillage implement, flexibly connected tandem frames, comprising draft connections between said frames movable' relatively to eachother and operable bythe forward draft for relatively adjusting said frames.

4f. In a tractor drawn tillage implement tandem frames and tillage gangs carried thereby, and relatively shiftable draft connections flexibly connectedto said frames and gangs and forwardly and rearwardly movablerelativeto each other by the draft of the tractor for angularly adjusting said gangs while in motion.

5. In a tractor drawn tandem tillage implement. front and rear frame uni-ts including horizontally movable pivoted tillage gangs, and relatively movable draft means connected tosaid frame units and gangs and operable in one direction by the implement drawing tractive force for angularly intermediate porof the tractor adjusting said frame units and gangs relative to each other.

6. ln a tandem tillage implement, tandem frame units and pivoted tillage gangs carried thereby, and draft connections forwardly and rearwardly movable relative to said uni-ts and flexibly connected to the inner and outer portions of said tillage gangs and operable by the forward draft on the implement for moving and adjusting said frame units and gangs.

7. lin a tillage units and tillage gangs, draft connections flexibly connected to said units and gangs, some of said draft connections being forwardly and rearwardly movable relative to one of said tandem frame units, and means for adjusting said last mentioned draft connections relative to the others for moving said gangs in varying angular relation.

8. lin a tillage imple-ment, front and rear frame units carrying pivoted tillage gangs, and relatively movable draft connections flexibly connected to said frame units and tillage gangs, some of said draft connections being substantially longitudinally fixed to one of the frame units and secured to the free ends of the gangs of 'the opposite frame unit and the others being forwardly and rearwardly movable relative to said front unit by the forward draft of the implement for angularly adjusting said gangs through the relative draft movements of said frame units.

9. ln a tractor drawn double disk harrow, front and rear units, front and rear pivoted disk gangs on said units, and a relatively movable draft appliance provided with draft bars connected to the inner and intermediate portions of said front and rear disk gangs, respectively.

10. ln a disk harrow, front and rear harrow frames, disk gangs pivotally connected therewith, a draft head movable relative to said front harrow frame, means for adjusting and locking said draft head relative to said front frame, and draft bars lpivotally connected to said draft head and to the inner and intermediate portions of said front and rear disk gangs, respectively.

11. ln a disk harrow., the combination with front and rear harrow sections each provided with adjustably connected disk gangs; ofv an adjustable draft appliance on said front harrow section including draft bars connected to the inner and intermediate portions of said front and rear disk gangs, respectively.

12. lin a tractor drawn double disk harrow, front and rear units including front and rear pivoted disk gangs, substantially longitudinally fixed draft bars on said frontl unit flexibly connected to the pivoted and .inner portions of said frontand rear disk gangs, respectively, and a relatively movable implemlent, tandem frame and locking said draft appliance provided with draft connections connected to the inner and intermedia-te portions of said front and rear disk gangs, respectively.

13. In a disk harrow, the combination with front and rear harrow sections each provided with adjustably connected disk gangs; of a relatively movable draft member previdedwith ndraft bars connected to the inner ends of said front disk gangs, and means for moving said draft member and harrow sections relative to each other, including reach bars flexibly connected to said rear harrow section and draft member.

14. In a disk harrow, front and rear harrow frames, disk gangs pivotally connected therewith, a draft member slidably carried by said front harrow frame, and means for connecting, adjusting, and locking said draft member and front harrow frame in various relative positionsto each other, said means including draft'bars pivotally connected to said draft member .and to the inner and pivoted portions of said front and rear disk gangs, respectively. i

15. In a tandem disk harrow, front and rear harrow frames and pivoted disk gangs, substantially longitudinally fixed draft bars connected to said front harrow frame and certain intermediate and inner portions of said disk gangs, a relatively movable draft appliance connected to the opposite inner Yeo and intermediate portions of said front and rear disk gangs, and means for adjusting draft appliance in various gang angling relations to the line of draft.

16. lin a tractor drawn tandem disk harrow, front and rear harrow frames, a plurality of pivoted front and rear disk gangs, and a rela-tively movable draft appliance adjustably connected to said front harrow frame and bars connected to the inner and pivoted portions of said front and'rear disk gangs, respectively, wherebythe latter when angled will automatically assume less anguf lar relations to each other when said draft appliance is released and .moved forwardly by the tractive force relative to said front harrow frame. I i

17. lin a tractor drawn tandem disk harrow, front and rear frames each provided, with a plurality of angularly adjustable disk gangs, a relatively movable draft appliance connected to the inner and pivoted portions of respectively, and normally fixed to the front frame and means for releasing said draft appliance whereby said disk gangs will automatically assume variable angular working positions while in motion.

18. JIn row, front and rear harrow frames each provided with a pair of pivoted disk gangs. and a relatively movable adjustable draft appliance provided with'parallel and rearsard front and rear disk gangs,

a tractor drawn tandem Vdisk har-v lll) vends of said wardly diverging draft bars connected to the inner and pivoted portions of said front and reardisk gangs, respectively, and normally fixed to the front frame whereby the latter when angled and released will automatically 'assume through movement of said draft appliance by the tractive force less angular and parallel relations to each other.

19. In a tandem disk harrow, front and rear harrow frames and disk gangs, substantially longitudinally fixed draft bars connected to said front harroW frame and certain intermediate and inner portions of said disk gangs, a longitudinally movable draft appliance flexibly connected to the opposite inner and intermediate portions of said disk gangs, and means for adjusting and locking said draft appliance in various gang angling relations to the line of draft.

20. A disk harrow, comprising front and rear harrow sections, adjustably mounted front and rear disk gangs, draft bars flexlbly connected to said front harrow section and the intermediate and inner portions of said front and rear disk gangs, respectively, a draft appliance provided with draft bars flexibly connected to the inner ends of said front disk gangs and to rear harrow section, and means for moving and adjusting said draft appliance relative to said front liarrow section whereby to simultaneously move and adjust said disk gangs in various relatlve angular positions to the line of draft.

21. An engine drawn tandem disk harrow, comprising front and rear harrow sectlons each provided with pivotally mounted disk gangs, longitudinally fixed draft bars flexibly connected to said front harrow section and the intermediate and inner portions of said front and rear. disk gangs, respectlvely, and a vlongitudinally movable draft appliance carrying longitudinally movable draft bars flexibly connected to the inner front disk gangs and the pivoted portions of said rear 'disk gangs, and means for locking and releasing said draft app l1ance relative to one of said harrow sec- .tions whereby when released to simultano ously and automatically move and adjust sald disk gangs in various converging angular positions to eachother through the englne draft on said draft appliance while 1n motlon.

22. In a tractor row, front and drawn double disk harrear harrow frames, front and rear pivoted disk gangs, laterally movable draft links flexibly connected to said front barrow frame and the pivoted and lnner port1ons of said front and rear disk gangs, respectively, a tractor draft appliance provided with longitudinally movable draft bars flexibly connected to the inner and plvoted portions of said front and rear 1sk gangs, respectively, and means operable from a tractor for .moving and locking said draft appliance and longitudinally movable 'draft bars independently of and relatively to said front barrow frame and draft links whereby said disk gangs may be simultaneously angled in various adjusted positions through said longitudinally movable draft appliance while the latter is in motion.

23. In a tractor drawn tillage implement, flexibly connected tandem tillage gangs and draft connections between said gangs movable relatively to each other through the relative draft movements of the tractor for relatively adjusting said gangs.

24. In a tractor drawn tillage implement, tandem tillage gangs, and relatively adjustable draft means flexibly connected to said gangs and movable by the relative draft movements of the tractor for adjusting the relative positions of said tillage gangs.

25. In a. tractor drawn tillage implement, tandem tillage gangs, a draft appliance and relatively fixed and movable 'draft means flexibly connected to said gangs and movable by the relative movements of the tractor for changing the relative positions of said tillage gangs.

26. In a tractor drawn tillage implement, flexibly, connected tandem tillage gangs, a movable draft member and relatively fixed and movable draft connections to said gangs movable relatively to each other through the movements of said draft member by the tractor for relatively adjusting said gangs.

27. In a tractor drawn tillage implement, a plurality of tillage gangs, relatively longitudinally yfixed and movable draft connections flexibly vconnected thereto, and means for actuating the movable connections by the forward draft on the implement whereby said gangs are moved relatively of each other.

28. In a tractor drawn tillage implement, including a plurality of tillage gangs, relatively longitudinally fixed and movable draft connections flexibly attached to the inner and intermediate portions of said gangs, and means for adjusting the movable draft connections by the forward draft on the implement for moving said gangs in variable relative positions to each other.

29. In a tractor drawn tillage implement, including a plurality of tandem tillage gangs, relatively fixed and movable draft connections flexibly attached to said gangs, and means for adjusting the movable draft connections through the movements of the tractor relative to the implement for moving said gangs in variable relative angular positions to each other.

30. In a tractor drawn tillage implement, tandem tillage gangs, and relatively fixed and movable draft members flexibly connected to said gangs, said movable draft members being actuated in one direction by -lltl i tandem tillage gangs,

the implement drawing tractive force for moving said tandem gangs relatively to a less angular position and in an opposite direction to a more angular position.

3l. ln a tractor drawn tillage implement, tandem tillage gangs, draft connections flexibly connected to said gangs, some of said draft connections beingforwardly and rearwardly movable relative to the other and adapted to move said gangs in opposite angular relation to each other thro-ugh the relative movements of the tract-or, and means for locking said draft connections and gangs in variable relativepositions to each other.

32. lin a tractor drawn tillage implement,

draft connections flexibly connected to said gangs, some of said draft connections being forwardly and rearwardly movable relative to the other at points of connection on said gangs opposite the latter and adapted to move said gangs straightening said rear gangs draft power sets of gangs by backing, and means for putin opposite angular relation to each other through the relative movements of the trac* tor, and means for locking said draft connections and gangs in variable relative positions to each other.

33. lfn a harrow, front and rear frames, disk gangs carried thereby, means for automatically straightening said'rear gangs in backing and means for setting an angle for the rear gangs in backing and for assumingy the angle so set Yon the `next forward ull. 2 ip 34. lin a harrow, front and rear harrow units, disk gangs on said units, means connecting said units, means operable by the for setting the angle in both ting the gangs into angle by a pull.

35.` lfn a harrowfront and rear frames, disk gangs carried thereby, means for automatically straightening said gangs in backing and means for setting an angle for the gangs in backing and for assuming the angle so set on the next forward pull.

36. In a harrow, front and rear frames, disk gangs carried thereby, means for and means for setting an anglefor the rear gangs in backing and for assuming the angle so set on the next forward pull.

37. lfn a harrow, front and rear frames, disk gangs Carried thereby, means for automatically straightening said rear gangs in backing,' and means including a draft device for setting an angle for the rear gangs in backing andI for assuming the angle so set on the next forward pull.

38. ln a harrow, a frame, disk gangs caryried thereby, a draft device adapted to receive' the pull of the harrow, said device being slidable with respect to said frame, ratchet means for locking said draft dein backing vice with respect to said frame and releasing means operablefrom a point outside the harrow, Y

39. ln a harrow, front and rear sections, disk gangs carried thereby, draft means, means for setting the angle of both gangs by a push on said draft means while the gangs are still substantially straight, and means for causing the gangs to assume the angle so set on a forward pull on said draft means.

40. lin a harrow, front and rear sections, disk gangs carried thereby, draft means, means for setting the angle of both gangs by a push on said draft means while the gangs are still substantially straight, means for causing the gangs to assume the angle so set -m a forwardpull on said draft means, and means for releasing the angle on a for# ward pull.

41. ln a harrow, front and rear sections, disk gangs carried thereby, draft means, means for setting the angle of both gangs by a push on said draft me'ans while the gangs are still substantially straight, means for causing the gangs to assume the angle so set on a forward pull on said draft means, and means operable from a point outside the. harrow for releasing the angle -on a forward apull. j

42. ln a harrow, front andj rear frames, disk gangs carried thereby, means operable by the draftl power for automatically angling the rear gangs', and means con rollable from a. point outside the harrow fxcausing the draft power to straighten sai rear gangs by aforward pull.

43. ltn a harrow, front and rear frames, disk gangs carried thereby, means operable by the draft power for automatically angling said gangs, and means controllable from a point outside the harrow for causing the draft power to straighten said gangs by a forward pull.

44. ln a harrow, front and rear units, disk gangs on said units, means connecting said units, and means controllable from a distance for causing the forward pull of the draft power either to straighten or to angle said gangs.

45. ln a harrow, angularly adjustable disk gangs` means to which power is adapted to |be applied for advancing said harrow, and means operatively related to said first mentioned means and to said gangs and controllable from a distance, whereby the draft power may be utilized to adjust the angles of said gangs.

46. lin a harrow, front and rear units, angularly adjustable disk gangs on said units, means to which power is adapted to 'be applied for advancing said harrow, and

trollable from a distance, whereby the draftpower may be utilized to adjust the angles of said gangs.

47. In a harrow, a draft frame, angularly adjustable disk gangs, means movably mounted upon said frame and iiexibly connected to said gangs, a draft device also movably mounted upon said frame, and means providing a lost motion connection between said first mentioned means and said draft device. y

48. In a harrow, a. draft frame, angularly adjustable disk gangs, means movably mounted upon said frame and flexibly connected to said gangs, a draft device also movablyT mounted upon s aid frame, means providing a lost motion connection between said first mentioned means and said draft device, and means controllable from a point outside the harrow for locking said draft device to said frame.

49. The combination with a tractor having a Adraft device, of an earth engaging element; and a setting and tripping. draft connectlon between the tractor and said element, whereby when the tractor is advanced Said connection interlocks at selective positions to determine the effective ground engaging angle of said element.

50. The combination with a tractor havmg a draftdevice. of an earth engaging clement; and a setting and tripping draft Mconnection between the tractor and said element, whereby when the tractor is advanced said connection intel-locks at selective positions to determine the -effective ground engaging angle of the earth engaging element, and by which means the earth engaging element can be moved to inoperative position vancing andis attached to the tractor.

51. The combination with'a tractor havlng a draft device, of an earth engaging ele- 1 ment; and a setting and tripping draft connection between the tractor and said element, said connection locking the earth engaging element in operative position when the tractor is advanced and operative to adjustablyinterlock at a selected one of a plurality of positions -when the tractor is backed up after said element has been moved to inoperative position.

while the tractor is still-adj.

52. In a harrow, tandem frame units and tillage gangs, a relatively fixed draft guide on one of said frame units, relativel `movable draft connections guided by sai guide and connected to the inner and intermediate portions of said front and rear tillage gangs, respectively, and relatively longitudinally fixed draftconnections connected to one of said frame units and the opposite inner portions of said rear tillage gangs.

53. In a tillage implement, front and rear harrow frames, front and rear tillage gangs, a fixed central draft. guide on said front harrow frame, a movable draft appliance on said guide, a guide -head on said movable draft ap lianceconnected to the inner ends of said ont tillage gangs, draft links extending from the latter to said draft appliance, draft means connecting said draft appliance to the intermediate portions of said rear tillage gangs, and longitudinally fixed draft links connected to said front harrow frame and the inner ends of said rear tillage gangs.

54. In a tractor drawn tillage implement, frontand rear l liarrow frames, pairs of tillage gangs pivotally connected thereto, a cent-ral relatively fixed draft member forining a guide on said front ha-rrow frame, a draw-bar in said guide flexibly connected to the inner ends of said front tillage gan relatively longitudinally lixed draft 1i s connected to said front barrow frame and the inner ends of said rear tillage gangs, draft means flexibly connecting said drawbar to the outer ends of said rear harrow frame whereby the latter will be moved rearwardly with the rearward anglin movement of said front tillage gangs, an the pivoted portion of the rear gangs will be moved rearwardly to angle the same and means for actuating adjustin and locking said relatively fixed and Inova le draft connections and frame units relative to each Other as against the forward draft movement of the tractor.

In testimony whereof I have affixed my Signature in the presence of twoy witnesses.

FREDERICK C. WARNE. Witnesses:

N. P. HENRY, D. C. UPEESE.

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