US1412918A - Plow - Google Patents

Description

W. W. CAMERON.

PLOW.

APPLICATION FILED DEC. 10, 1915.

Patented Apr. 18, 1922.

6 SHEETS-SHEET I.

W. W. CAMERON. PLOW.

APPLICATION FILED DEC. 1 0, 1915. Patented 189 6 SHEETS-SHEET 2- (54a 6mm 1? a a 2M v if t f AJ'A W Z 5 AW W. W. CAMERON.

PLOW.

APPLICATION FILED DEC. 10. I915- 1,412,918. Pflwnted P 18, 1922.

v B $HEETS-SHEET 3.

Q in Q "3' m 3! 2 0) W. W. CAMERON.

PLOW. I APPLICATION FILED DEC- 10, 1915.

Patented Apr. 18, 1922.

6 SHEETS-SHEET 4.

w. w. CAMERON.

PLOW.

APPLICATION FILED DEC-10.1915.

Patented Apr. 18, 1922.

6 SHEETS-SHEET s.

w. w CAMERON.

PLOW. hPPLiCATION men 050.10, 1915.

Patented Apr. 18, 1922.

' 6 SHEETS-SHEET 6- Q m. r 1% m. 4H9 7m 12 mm o i e 1 0 4Q 0Q Q. mm. .mfi mt M Ma WILLIAM VT. CAIVIERON, OF LA. CROSSE, EVISCG sin, Assrenon, BY MnsN-n ASSIGN- MENTS, 10 FRED GERLACH AND ARE GL1) KELLER, BOTH OF CHICA TRUSTEES.

PLOW.

Specification of Letters Eatent. Patg nfigd Apr. 18 1922 Application filed December 10, 1915. Serial No. 66,195.

To all whom it may concern:

Be it known that 1, WILLIAM W. CAMERON, a resident of La Grosse, in the county of La Crosse and State of Wisconsin, have invented certain new and useful Improvements in Flows, of which the following is a full, clear, and exact description.

This invention relates to traction plows.

One object of the invention is to provide an improved power lift for the plow in which the plowing structure is sustained upon a rotating shaft provided with shifting connections between the shaft and the plow carrying structure for raising and lowering the la ter, the shaft being sustained betweentwo of the ground wheels in such a way that the raising and lowering of the structure by the connection will cause the said ground wheels to shift so as to increase the upward and downward movement of the structure.

Another object of the invention is to provide improved means for raising and lowering the plow carrying structure so that the plow may be locked in its raised and in its lowered positions with means for setting the mechanism into automatic action by 'the engine driver by the operation of a single lever pulled in the same direction for all operations.

Another object of the invention is to se cure a difierential shifting of the forward sustaining wheels by novel means whereby the plow carrying structure will be approximately level transversely when in its raised and in its lowered positions.

Another object of the invention is to control the position of the rear end of the structure by the position of the differential shifting mechanism of the forward wheels and lock the rear wheel against castoring while plowing and automatically release the lock by the vertical rise of the plow to permit of free castoring while the plow is being transported.

Another object of the invention is to provide power operated plow shifting mechanism which is simple in construction and inexpensive in production.

The invention consists of several novel features hereinafter set forthand more particularly defined by claims at the conclusion thereof.

In the drawings Fig. 1 is a plan of the plow embodying the invention.

Fig. 12 is a sideelevation seen from the plowed ground side of the plow.

F ig. 3 is a side view of the plow seen from its land sideor unplowed groundside.

Fig. 4c is a front elevation with the plows and rear wheel attachments omitted. 1

Fig. 5 is a diagram showing the relative positions of the plow beams, the eccentric, the free end of the crankarrn with its spindle in the landside sustaining wheel when in plowing position, all shown in full lines; the dotted lines showing the relative position the parts would assume if the beams were raised by the eccentric alone; the lifting levers and controlling mechanisms being omitted.

Fig. 6 is another diagram with the controlling levers etc. in position, the full lines showing the parts in plowing position and in the same position as indicated in Fig. 8; the dotted lines showing the position the parts assume when raised by both the eccentric and V the. shifting of the landside sustaining wheel.

Fig. 7 shows the hand lever for shifting the front furrow wheel by hand, the ratchet to which it is locked, the block pivoted to the continuously rotating shaft 11, the lever bar rigid to the ratchet and slidingly connected to the plow beam on the furrow side of the plow and a section of the beam to which it is connected.

Fig. 8 shows a similar view of the same parts on the landside of the structure, the block pivoted to the shaft and rigidly secured to the ratchet being prolonged into an arm for controlling the rear wheel mechanism.

Fig. 9 shows the rear wheel controlling device when the rear of the plow is in lowered position.

Fig. 10 shows the same parts in the position assumed when the rear of the plow is in its raised position.

Fig. 11 is a detall ofthe, clutch mechanism tion to force the dog into the revolve clutch.

. projecting Fig. M is a detail showing a top View of a socket attachment at the landside end of.

the continuously rotating shaft for turning the shaft by hand with a bar.

In the drawings 1 indicates the plows, mounted upon plow beams 2, the beams being rigidly connected to form a unit by the Ushaped cross-bar 3 in front and cross-bars 2 at the rear so that the plow carrying structure with the plows are shifted together. 8 and 3 are clevis jaws to which the draft bar is attached. 4L is a front carrying wheel on the furrow side of the'plow, 5 a land wheel on the opposite side, both being placed toward the front end of the structure. 6 is the rear carrying wheel mounted upon a shank 6 having a bearing in the rear of the part 32 pivoted to the structure for vertical swinging.

7-8 indicates crank arm pivotally mounted at its inner end upon a continuously rotating shaft 11, its front end 8 being provided with a spindle sustained in the hub of the wheel 4.

910 shows the same relative parts on the opposite side. V

' 10 indicates a sprocket and chain driving mechanism between the wheel and the shaft 11 on the landside, and 10 i1 licates a chain and sprocket driving mechanism between the furrow-wheel and shaft 11, on the furrow side, the continuous rotation of the wheel on each side causing the shaft 11 to rotate continuously in the same direction the wheels travel.

12 indicates springs at each end of the shaft 11 for keeping a toothed clutch mechanism between the sprocket wheels and the shaft 11 in constant operable connection in driving forward, but permitting the machine to be pushed backwardly without rotating the shaft 11. inasmuch as this is a usual mechanism and forms no part of my invention it is not shown in detail.

13 indicates a clutch wheel rigidly secured by a key or other device to'the shaft 11 and constantly rotating with it, and provided with recessed apertures 13. Partially covering both sides of the clutch wheels are two halves of acasing 18, which are alike except being rights and lofts, with inwardly parts which meet and are rigidly united by the tie-bolts 18 to form a rigid casing. This casing is pivoted on the shaft lion each side of the wheel 13 and has two radial arms, 18 bein oppositely spaced and provided with enclosing springs 18 surrounding the dogs 14; by means of the pins 18 through the dogs the springs normally keep the dogs forced away from the apertures l3 in the clutch wheel 18, with their outer ends projecting over the looped guide bar 18 as indicated at the left hand side of Fig. 11 and both sides of Fig. 12. The guide is on the rear sustained upon abracket 1? attached to the casing 19 of the landside eccentric, and the forward end is attached to cross-bar 16 extending between the'two clevis jaws 3 and 3 and bolted thereto as shown 7 in Fig. 4.

wardly or operatively, as the dog would immediately strike the end of the guide; neither could it revolve backwardly as immediately the opposite dog would strike the rear end of the guide 18 but in Fig. 11 the dog shifting lever 15has been tilted forwardly somewhat by the pulling of the cord 45 by the engineer, the lower end of thelever has forced the dog inwardly into one of the apertures l8 with its outer end far enough in to be free to pass. the end of the guide and slide along its inner face to keep the dog in the aperture while the shaf 11 and the res ing 18 with the tie-bar 19 are making half of a revolution about the center 19? of the eccentric disc 19 described below.

The spring cannot force the dog out of the opening lluntil it has passed the end of the guide, when it will withdraw from the aperture and be forced into the position shown at the left hand of Fig. 12. Meanwhile the opposite dog has also traversed a half revolution and comes into the position indicated at the right hand side of Fig. 12, the power of the spring 18 being sufficient to force the loosely pivoted ever 15 into a practically vertical. position again. WVhen thelever 15 is operated to shift the dog into the clutch, a small projection 15* at the lower end of the lever contacts against the cross-bar 16 to prevent it. moving further than is enough to force the dog properly int-o'the opening l3 and free of the end of. the guide. 7 i

In making this half revolution the tie-bar 19 connecting the two eccentric discs 19" is brought to the upper position over the center and the shaft 11 is brought to the lower position beneath the center of the eccentric.

In the position shown in Fig. 12 the plowing structure has raised as far as the eccentric will carry it. It is manifest that the parts will remain in this reversed position until the lever 15 is again pulled fore ward by the engineer when the process will int be repeated in another half revolution and the parts return to their original position with the plow in lowered position for plowing. The loop guide 18 is bolted to its brackets with plow bolts 18 the heads of which are countersunk in the inner face of the guide.

Attached to the forward ends of the plow carrying structure .upon opposite sides are the brackets 19 connecting the structure with the continuously rotating shaft 11 by means of the eccentric discs 19. This construction is more fully shown in Figs. l, 5 and 6. The parts 19 on each side are in pairs and held together by bolts as indicated,'with a circular opening in each part and having an enlarged annular groove as shown in the cutaway portion on the right hand side of Fig. 4, these grooves enclosing the periphery of the eccentric discs 19 also indicated by the dotted lines 19 in Fig. 5. The discs 19 are oppositely perforated at equal dis-- tances from the center for the passage of the tiedoar 19 connecting the two discs, and the shaft 11 which extends through both eccentrics and outwardly to be driven by sprocket and chain connections with the two ground wheels. as shown in Figs. 1 2., 3 and 4.

The eccentric discs being contained in the brackets 19 rigidly attached to the beams. it is manifest that the centers of the eccentrics will always be at a fixed distance from the beams. The tie-bar 19 passingthrough the clutch casing arm 18, the movement of the tie-bar caused by the dogs-entering the apertures 13 transmits rotary motion to the eccentricswhich revolve about their centers; and as the shaft 11 sofar as the operation has been described stationary with relation to the grounth it is manifest that the whole eccentric rotates about the axis of the shaft it and the eccentric causesthe plow beams to be raised a'distan-ire equal. to

the arm 23, the latter being pivoted on the shaft 11 (see Fig.8) in which the hand lever 25 is indicated in dotted lines. The hand lever is pivotally supported on the shaft 11 by the base 25, which is a part of the crank arm 91O carrying the wheel 5 at its free end the hand lever with its crank arm and the ratchet and arm QQthusbeing concentric with the shaft 11. The hand lever maybe adjusted to various p the ratchet, thus shifting the when 5 and raising the shaft 11 vertically with relation to the axis of the wheel The angled lever-arm 21 to which the ratchet is rigidly attached extends rearwardly and sd ingly through a. slotted bra ket 21-2 th s rigidly attached to the beam asshown in FigsB, 6 and 8'. The three parts. the ratchet 20 the arm 21 and the arm 23. also the lever 25 with the crank arm 9-40. therefore always act as a unit in shifting" the plow carrying structure with relation to the axis of the wheel 5 except when the wheel is manually shifted by the hand lever. in Fig. 1 the hand lever isshown in cross sec tion. This hand lever and the one upon the opposite side is provided with the usual means for lockingthe same in adjusted positions to the ratchet. The free end of the arm'23 isconnected to the forward end of the connecting bar 24: that at its rear attaches to and operates the mechanism for raising and lowering the rear end of he structure simultaneously'with the front end.

Upon the opposite or furrow side of the plow for controlling the relative positions of the furrow whee-l, similar parts are connected together, the hand lever being indicated by the numeral 26, its support upon the crank arm 7-8 by the ratchet by 27, thelever arm by 28. the arm 28 pivoted on the shaft 11 being cut of? where it is attachedto the bar 28instead of being prolonged as in 23. The slotted bracket- 29 through which the rear or .28 passes is attached to'zthe furrow side'heaui as shown in Fig. 7. In all respects the location of the parts is similar to those of the o nosite side exceptthat the slotted hracl at 29 placed further in the rear from the 11 with which the ratchet-2'7 moves concentrically, and the lever bar 28 is. necessarily longer than the bar 21.; see Figs. 2 an 7.

ln Figs. 1, 2, '3 and 4 the land el is represented as being on the surface of the ground with its axis horizontally in front of the shaft 11 by resting upon a block A, while the furrow wheel t is shown as being on the bottom of the furrow. on a level withthe bottom of the plows, the hand lever-26 being shown as adjusted accordingly.

In Fig. 6 the land wheel spindle 10 is represented as horizontally in front of the shaft '11, and theratchet bar 21 and other united parts with the eccentric bracket 19 and enclosed eccentric disc of the landside are shown in full lines to indicate plowing position; while the dotted lines show the positionthe parts assume when raised as in actualpractice by the combined effect of the raise by the eccentricand the shifting of the landwheel 5; forit ismanifest that as the plow carrying structure is raised by the rotation of the eccentric as indicated by Cir ;lott.ed lines in Fig. 5, the arm or lever bar 21 is carried upwardly with it by the slotted bracket 22, thus rotating the ratchet and arm 23 about the shaft 11 and with it the hand'lever 25 and the crank arm 9-10, thus drawing the wheel 5 backwardly and raising the shaft 11 with the same effect in raising the structure as'if the hand lever were operated by hand and giving an additional elevation of the plow carrying structure. inasmuch as the eccentric center is-in a fixed position with relation to the beam, the shaft 11 and tie-bar 19 are not only reversed as shown in 5 but the shift of the wheel 5 raises the shaft 11 to the position indicated by the dotted lines in Fig. 6.

the diagram of Fig. 5 the shaft 11 remains stationary while the eccentric rotates and arries the tie-bar 19 above the shaft but in Fig. 6 the combined effect of both means of shifting the plow carrying structure is shown with a largely increased elevation of the plow beam 2.

The amount of additional rise caused by the shifting of the ground wheel will depend upon the leverage obtained by the distance the slotted bracket is placed rearwardly fromthe axle 11. Inasmuch as when the plows are at work in the ground the structure is approximately and transversely level, and would be out of level when raised with out some adjustment, the slotted bracket 29 placed further back from the shaft 11 than is the bracket '22; and while bracket 29 is elevated the same distance by the eccentric as is 22 it has less effective leverage and the wheel l isnot shifted as much as is the wheel 5, and consequently does not assist raising its side of the plow so much as does 22, with the effect oi tending to maintain the'le'ver of the plow carrying structure when coming out of the ground. v

At the rear of the structure the wheel 6 rotates onthe shank 6 the vertical portion of which passes through the bracket 32 to caster freely when not locked against it. The bracket 32 is pivoted for vertical movement at 35 on the bracket plate 30 rigidly attached to the rear beam 2. The rear of the plate 30 is concentrically curved to correspond with the curve 32 of the pivoted bracket 32 where it and the bracket 32 coincide. Pivoted on the hinged bracket 32 at 39 is a strap 34, the upper end of which is pivoted to the bell crank lever 31 at 40, which in turn is pivotedto the bracket plate 30 at 4&1. The free end of 31 is pivoted to the rear end of the connecting bar 2 1, so that when the arm 23 is rotated forwardly by the elevation of the lever arm 21 the bell crank lever 31 is rotated forwardly upon its pivot 11 causing a downward pressure upon the strap 34: and imparting a rotary movement to the bracket 32-upon its pivot 35.

32 is supported on the shank 6 by the col-- lav 33 rigidly secured to same by the-pinch bolt see Fig. 13. The parts and the rear wheel are shown with the plow in a lowered position in Fig. 9. Inasmuch as 32 is pivoted at 35 to the plate 30 the effect of the'movement is to swing the shank 6 about the pivot 35 and bring the wheel closer to the plow; that is, there is an effective leverage extending between the pivot 35 and the axis of the wheel 6 so that as the wheel is drawn forward the shank by its collar 33 raises the bracket 32 and with it the plate 30 andthe plow, as shown in Fig. 10. hen in the lowered position shown in 9 the rear bottom corner edge of the plate 30 rests in an open slot 36 in the forward portion of the collar 33 as shown in Fig. 13 and in Fig. 9, and effectively prevents the shank 6 from castoring in the bracket 32. But as an elfect of the combined-leverage of the parts 31 and 32 and 34L the rear of the plate 30 rises faster than the collar 33 and the corner of the plate 30 rises above thelocking slot 36, and in the raised position of the plow the shank and wheel are free to castor. This is desirable in transportation of the plowin turning corners, while in plowing operations, especially with tractor-drawn plows, it is found desir able to keep the wheel rigidly in line with the direction of travel and locked against castoring.

he upper plate is made with quite a large upper bearing surface extending horizontally andcircunn terentially to the limits of the turning of the shank 6 in its l'aearings in the bracket 32, so that should an effort be made to lower the plow while the wheel is turned out of its proper locking position the plate 30 cannot lower outside of the extension in which the slot 36 is formed and lock the shank and wheel against returning to their proper position. (8% Fig.

To keep the rear of the bracket 32 and the collar in proper adjoined position and yet permit the free turning f the shank and collarin the bracket, a hook portion 37 is formed at the rear of the collar to embrace an extending rim at the lower end of the rear of the bracket 32 as shown in Figs. 9 and 10 and indicated in Fig. 13 in cross section.

In operation, with the plow traveling forward in the ground, when it is desired to raise the plows from the ground the tractor driver pulls the cord e5, which'pulls the upper end of the lever 15 forwardly, the lower end of which forces the forward dog backwardly into one of the openings in the clutch wheel 13 with the forward end of the dog free to slide along the inner face of the guide 18 thus turning the'casing l8 and causing the tie-bar 19 to rotate the eccentric discs 19 about their centers and within portion of the collar 33 i the grooves of the brackets 19 and raise the of my plow carrying structure; and the raising of the beams thereof causesthe lever arms or bars 21 and 28 to rotate the ratcliets 20 and 27 and the levers 25 and 26 with their crank arms 78 and 910 to shift the wheels 4 and 5 rearwardly to lift the shaft 11 and with it increase the rise of the whole plow carrying structure and the connections from the shaft 11; at the same time rotating the arm 23 upon the shaft 11 and causing the connecting bar 24L to operate the bell crank lever 31 to shift the bracket and bring the wheel 6 closer to the rear of the plow and raise the rear end thereof and lift the plate 30 out of the slot 86 so as to leave the shank and wheel free to castor in the bearing in '32. In its raised position with the tie-bar 19 above the shaft 11 the dogs 14: in position above the ends of the guide 18 will prevent the movement of the tiebar in either direction and lock the eccentrics also against movement. When it is desired to lower the plow the operator again pulls the cord 45 when the whole operation is automatically reversed and the plows are brought again to proper lowered working position.

For convenience I designate the cranks 7-8 and 910 and the shaft 11 as a supporting structure, the beams and braces 2, 2 and 8 as a plow carrying structure, and the eccentrics 19-19 as the shifting connection between the two structures.

The mechanism herein described is very simple and very efficient and is'very inexpensive in construction. While I have shown and described a very efficient embodiment invention it is to be understood that I do not limit the scope thereof to the pre cise structure shown, as many modifications thereof might be made without departing from'the spirit of the invention and of the claims herein made.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent is:

1. In a plow, a plow carrying frame, sup porting wheels therefor, mechanism moving the frame with respect to the wheels, and supplemental mechanism acting automatically in conjunction with the first named mechanism for further moving the frame with respect to the wheels.

2. In a plow, a plow carrying frame, sup porting wheels therefor at'the front of the frame, means operated by one of said wheels for raising and lowering the front of the frame with respect to the wheels, and supplemental mechanism intermediate, the frame and the wheels and operated by the frame to further raise and lower the frame with respect to the wheels.

3. In a plow, a plow carrying frame, a rotatable shaft, means for rotating the shaft,

a frame, at raising and lowering connection between the frame and the shaft, a crank arm pivoted at one end on the shaft, a sup porting wheel supported on the other end of the arm, and a connection between the frame and the crank arm and operated by the frame to oscillate the crank arm when the frame is raised or lowered by the rotatable shaft.

4:. In a plow, a plow carrying frame, a rotatable shaft, means for rotating the shaft, a plow carrying frame, a raising and lowering connection between the frame and the shaft, a crank arm pivoted on one end of the shaft, a supporting wheel supported on the other end of the arm, and a connection between the frame and the crank arm and operated by the frame to oscillate the crank arm when the frame is raised and lowered by the rotatable shaft, and means automatically acting for locking the frame in adjusted positions.

5. In a plow, a plow carrying frame, a rotatable shaft, means for rotating the shaft, a frame raising and lowering connection between the frame and the shaft, a crank arm pivoted at one end on the shaft and carrying a ground wheel at its other end, a connection between the frame and the crank arm and operated by the frame to'oscillate the crank arm when the frame is raised and lowered by the rotatable shaft, and means automatically acting for locking the last named connection in. adjusted positions.

6. In a plow, a plow carr ing frame, ground wheels therefor, a rotatable shaft, crank arms axially supported'in the wheels and on the shaft respectively, means for rotating the shaft, means mounted on the shaft for holding the arms in adjusted positions, and shifting mechanism between the shaft and the holding means for oscillating the crank arms.

7. In a plow, a plow carrying frame, ground wheels therefor, a rotatable frame supporting shaft continuously rotated by one of the wheels during the travel of the wheel, means on the shaft for shifting the frame with respect to the shaft, and a shift ing connection between one of the wheels and the frame and operable by the latter as it is being shifted for moving the wheels to further shift the frame.

8. In a plow, a plow carrying frame, ground wheels therefor, a rotatable frame supporting shaft continuously rotated by one of the wheels during the travel of the wheel, means on the shaft for shifting the frame with respect to the shaft, a shifting connection between the wheels and the frame operable by the frame as it is being shifted for moving the wheels to further shift the frame, and means controlled by the operator for throwing the connection between the shaft and the frame into and out of gear.

tion between one of the wheels and. the shaft operable in all the moved positionsof the wheel, and means controlledby the operator for throwing the first named connection between the wheels and the frame into and out of gear.

10. In a plow, a plow carrying frame, ground. wheelstherefor, a rotatable frame supporting shaft, means on the shaft for shifting the frame with respect to the shaft, means for operating the shaft, a crank arm pivoted on the shaft at each end thereof, the free ends of the arms being sustained in the wheels, and operative mechanism between the arms and the frame and operated. by the latter when being shifted for differentially shifting the wheels for further shifting the frame. 7

11. In a plow, a plow carrying frame, ground wheels therefor, a rotatable frame supporting shaft, means on the shaft for shifting the frame with respect to the shaft, means for operating the shaft, a supplemental mechanism between the wheels and the frame and mounted on the shaft and operable bythe frame when being shifted for differentially shifting the wheels to further shift the frame.

12. In a plow, a plow carrying frame, ground wheels therefor, a rotatable frame supporting shaft, means for rotating the shaft, means on the shaft for shifting the frame, and means for automatically and differentially shifting the wheels to further shift the frame.

13. In a plow, a plow carrying frame, ground wheels therefor, arotatable shaft, means for rotating the shaft, means on the shaft for equally shifting the two sides of the frame, and mechanism operated by the frame when being shifted for further and unequally shifting the sides of the frame.

14:. In a plow, a plow carrying frame. ground wheels therefor, wheel operated means for vertically shifting the frame with respect to the wheels, and mechanism op erated by the frame when shifted for diffen entially shifting the sides of the frame, comprising a supplemental connection of the frame with the wheels 15. In a plow, a plow carrying frame, ground wheels therefor, a shaft, means for operating the shaft, a raising and lowering connection between the shaft and the frame, and means comprisin a lever operated by the frame when raising and lowering for further shifting the frame, and a connection between the lever and one of the wheels.

16. In a plow, a plow carrying frame, ground wheels therefor, mechanism between one of the wheels and the frame for raising and lowering the latter, and mechanism for shifting one of the wheels to further shift the frame and operable by the frame while being shifted comprising a lever and a yielding connection between the'lever and the frame, and a connection between the lever and the wheel.

17. In a plow, a plow carrying frame, ground wheels therefor, wheel. operated mechanism between one of the wheels and the frame for raising and lowering the frame, and means for shifting one of the wheels'to further shift the frame comprising a lever arm at the side of the frame, a connection between the lever and the frame and operated thereby when being shifted, a crank arm pivoted on the frame with its free end sustained in one of the wheels and operative mechanism between the lever and. the crank arm.

18. In a plow, a plow carrying frame, sustaining wheels therefor, a raising and lowering connection between one of the wheels and the frame, automatic means for shifting one of the wheels to furthershift the plow with. respect to the wheel comprising mechanism between the wheel. and the frame and operable thereby including manually operated means for shifting the wheel independently of theoperation of the automatic means. 4 i

19. In a plow, a plow carryingframe, ground wheels therefor, mechanism for vertically shifting :the frame with respect to the wheels, and. automatically .actinggmeans for shifting one of the wheels to further shift the frame comprising a lever, means for operating the lever by the movement of the frame when shifted comprising a slotted bracket on the frame, a sliding connection between. the bracket and the lever .and a shifting mechanism between the lever and the wheel.

20. Ina' plow, a plow carrying frame,

. ground wheels therefor, a shifting mecha wheels, a supplemental mechanism acting automatically in conjunction with said first named mechanism for further moving the frame with respect to the wheels comprising hand levers pivotally mounted on the plow having operative connections with the wheels, pivoted sectors for locking the levers in adjusted po ons, and automatic mechanism for shifting the sectors comprising levers secured to the respective sec tors and differentially connected with the frame for differentially shifting the hand levers.

22. In a plow, a plow carrying frame, ground wheels therefor, a shaft continuously rotating during the travel of the plow, a raising and lowering connection between the shaft and the frame comprising an eccentric mounted on the shaft, abreakable driving connection between the eccentric 3.1K the shaft, and means for breaking said driving connection when the frame is raised and lowered,

23. In a plow, a plow carrying frame, ground wheels therefor, a driving connection between one of the wheels and the shaft continuously operating during the travel of the wheel, mechanism for shifting the frame with respect to the shaft comprising an eccentric having a breakable driving connection with the shaft and a connection with the frame, and means for breaking the driving connection with the shaft.

24:. In a plow, a plow carrying frame, ground wheels therefor, mechanism for shifting the frame comprising a shaft c011- tinuously rotating during the travel of the plow, and an eccentric pivoted on the shaft, a driving connection between the eccentric and the shaft, and mechanism operated by the movement of the frame when shifted for simultaneously raising and lowering the eccentric and the shaft comprising supple mental mechanism between the frame and one of the wheels. I

25. In a plow, the combination of carrying wheels and a plow carrying frame, with power driven mechanism for shifting the plow carrying frame comprising a shaft and a pair of eccentrics mounted on the frame and pivotally sustained on the shaft for simultaneously and equally shifting both sides of the frame, and means operated by the frame for simultaneously and unequally raising the sides of the frame.

26. ln a plow, he combination of carrying wheels and a plow carrying frame, with means operated by one of the wheels for vertically and equally shifting the two sides of the frame and means operated by the frame when shifted to shift the wheels to additionally and unequally shift the two sides of the frame.

27. In a plow, the combination of carryspaced from the axis of the eccentric ing wheels and plow carrying frame, with comprising a shaft and an eccentric mounted on the frame and pivoted on the shaft at a point radially spaced from the center of the eccentric, pivotally mounted on the shaft and connected to the eccentric at a point opposite the shaftand equally therewith spaced from the eccentric center, the shaft and the free end of the arm rotating about the eccentric center in shifting the plow carrying frame.

28. In a plow, the combination of carry ing wheels and a plow carrying frame, with mechanism for vertically shifting the frame comprising a shaft and an eccentric pivoted on the shaft at a point radially spaced from the axis of the eccentric, a

drivin connection between the shaft and the eccentric with itsfree end connected to the eccentric diametrically opposite the con nection of the shaft therewith and equally with both points of connection with the eccentric revolving about the axis thereof and the eccentric revolving about the axis of the shaft, with means for throwing the connection into and out of gear with the shaft.

29. In a plow, the combination of carrying wheels and a plow carrying frame, with mechanism for shifting the frame, comprising a shaft continuously rotating during the travel of the plow and an eccentric pivoted on the shaft, means on the shaft for rotating the shaft about the axis of the eccentric and means for throwing the means on the shaft into and out of gear.

30. In a plow, the combination of carrying wheels and a plow carrying frame, with mechanism for shifting the frame compris ing a continuously rotating shaft and an eccentric pivoted on the shaft, means on the shaft for rotating the shaft about the axis of the eccentric, means for throwing the means on the shaft into gear during shift ing operations and out of gear when the shaft has made a half revolution about the axis of the eccentric, and means for locking the eccentric against revolution when not engaged in shifting operations.

31. In a plow, the combination of carrying wheels and a plow carrying frame, with mechanism for shifting the frame eomprising a shaft continuously rotating during the travel of the plow and an eccentric pivoted on the shaft, means on the shaft for rotating the shaft a half revolution-about the axis of the eccentric in shifting the frame in one direction and the other half of the revolution in shifting the frame in the opposite direction, and means for locking the shaft against revolution about the axis of the eccentric when not engaged in shifting operations.

32. In a plow, the combination of carrying wheels and a plow carrying frame, with mechanism for shifting the frame comprising a shaft and an arm pivoted on the shaft, means on the shaft for operating the arm comprising a dog in radial relations to the shaft, means for shifting the dog longitudi nally to engage the shaft and hold it engaged during the shifting operation, and means for releasing the dog when the shifting operation is complete 33. In a plow, the combination of carrying wheels and a plow carrying frame, with mechanism for shifting the frame, oompri ing a shaft and an arm pivoted on the shaft, means on the shaft for operating the arm comprising a clutch and a dog in radial relations with the clutch and normally locked to hold the arm against rotation, manually operated means. for shifting the dog inwardly to engage the clutch, a guide forholding the dog in engagement with the clutch during theshifting operation and means for shifting the dog outwardly when the guide is passed to release the arm and engage the dog with a stop to prevent the arm from rotation. backwardly.

34. In a plow, the combination of carrying wheels and a plow carrying frame, with mechanism for shifting the frame comprising a shaft and an arm pivoted on the shaft,

means on the shaft for operatii'ig the arm comprising a clutch wheel and a pair of dogs in radial relation to the clutch wheel and circumferentially spaced from each other, and means for shifting the dogs alternately to engage the clutch to raise and lower the plow carrying frame.

35. In a plow, the combination of front and rear carrying wheels and a plow carrying frame, with. mechanism to raise and lower the front end of the frame comprising a shaft, an arm pivoted on'the shaft and operatively connected with the rear carrying wheel, and a connection between the arm and the frame and operated by the rise and fall of the front end of the frame to shift the connection with the rear wheel.

86. Ina plow, the combination of a plow frame and raise and lower the real-lend of the frame. 7 7

WILLIAM W. CAMERON. Witnesses:

A. J. BRUHA, P, A. PEDERSON.

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