USRE16352E

USRE16352E - Tractor

Info

Publication number: USRE16352E
Authority: US
Publication date: 1926-05-18

Description

Urafiman 3 Sheets-Sheet 1 May 18 1926.

A. G. RONNING ET AL TRACTOR CULTIVATOR Original Filed March 6, 1916 May 18 1926.

Re. 16,352 A. s. RONNING ET AL TRAC TOR CULTI VATOR Original Filed March a, 1916 3 Sheets-Sheet 2 May 18 1926.

Re. 16,352 A. G. RONNING El AL TRACTOR CULTI VATOH Original Filed March 6, 1916 3 Sheets-Sheet 5 fizz/6225055 jY/u 7 (1. fPorenz'rg a 1/1 [fa/022729,

Reissued May 18, 1926.

UNITED STATES ANDREAN G. RONNING AND ADOLPE RUNNING, OF MINNEAPOLIS, MINNESOTA.

TRACTOR GULTIVATOR.

Original No. 1,340,481, dated May 8, 1920, Serial No. 82,516, filed March 6, 19-16. Divided and application filed June 21, 1918, Serial No. 241,183. Original No. 1,535,489, dated April 28, 1925. Application for reissue filed March 20, 1926. Serial No. 98,348.

Our invention relates to farm implements and particularly to cultivators, and has for its principal object to provide a new and improved tractor propelled cultivator wherein the operator will have a clear and unobstructed view of the corn rows so that he may properly manipulate the cultivator .rigs, and which will be so constructed and arranged that the machine, includ1ng the cultivator rigs, may be accurately gulded as it moves along the rows. Another object is to provide improved means for steering a tractor pushed farm implement to facilitate turning the machine at the ends of the field, or wherever else it may be necessary to turn it. A further object is to provide means for loosening the soil behind the traction wheels. We accomplish these objects as illustrated in the drawings, and as hereinafter described. What we regard as new is set forth in the claims.

This is a divisional application of an original application filed March 6th, 1916, Serial No. 82,516, resultin in Letters Patent #1,340,461, issued May 8t 1920.

In the accompanying drawings Fig. 1 is a plan view of our improved implement;

Fig. 2 is an enlarged partial longitudinal sectional view on line 22 of Fig. 1; and

Fig. 3 is apartial horizontal sectlon on line 33 of F1g. 2. i

Fig. 4 is a partly sectional elevation, as seen on the line 44 in Fig. 1.

Our improved machine comprises a tractor element by which the machine is propelled, and a cultivating element arranged in advance of and pushed by the tractor element and comprising a front frame having dirigible front wheels, and earth working tools disposed ahead of the tractor elementand pulled by said front frame, which is operatively connected with the tractor element so that the machine may be guided in traversing the field; and steered in turning, etc., an operator seated on the tractor element. Provision is also made by 'which the operator may suitably manipulate the cultivatln devices, and for automatically shifting tiiem laterally when the front wheels are turned in either direction. To

elsewhere, thetraction wheels may also be turned laterally in relation to the front by it and thereby means of the tractlon wheels.

frame in conjunction with the steering of the front wheels.

Referring to the drawings: 45 indicate traction wheels which are mounted on suitable spindles 67 at opposite sides of an intermediate platform 8, as shown in Fig. 1. 50 The traction wheels 45 are provided with gears 910, respectively, at their inner sides, with which mesh driving pinions 1112, carried by alined shafts 1314, which are connected by any suitable differential gearmg, and are driven in any approved way from a motor 15, such as an internal combustion engine, mounted on the platform 8. The differential shafts 1314 are also provided with brake drums 16, upon which are mounted brake bands 17 as best shown in Figs. 2 and 3. Said brake bands are arranged to be operated to grip or release theirrespective drums by means of rock shafts 18f8, mounted at opposite sides of the platform 8 and having downwardly extending arms 19'19", by which said shafts may be rocked by mechanism which will be hereinafter more fully described. The arrangement is such that either of the 30 driving pinions 11-12 may be separately braked to stop the traction wheel driven steer the machine by 20 indicates a reach pole or tongue, the rear end of which is detachably fitted in a. suitable socket in a tubular support 21, which is mounted underneath the platform 8 upon a central pivot 22. The support 21 may in certain circumstances be held against rotation about its pivot by means of a bolt 23 which is adapted to extend through the platform 8 and engage a riil gear 24 secured to the support 21, as s own in Fig.

2. The tongue 20 extends forward alon 05 the centerline of the machine, and is rigid ly secured to a front frame to which are connected the cultivator rigs and the dirigible front wheels' as hereinafter described, so that the ton e forms a part of the frame of the mac ine as a whole, and constitutes a relatively narrow forward portion thereof, thereby giving practicall unobstructed view of the plant rows at ei er side as well as of the cultivating tools which occupy a zone substantially co-extensive with the width of the rear frame portion or platform 8 on which the driver rides. i

25-26 indicate the front wheels which, as shown in Fig. 1, are mounted upon spindles 27-28, which project laterally from vertical pivots 29-30, mounted in suitable bearings at the ends of the front axle 31. Said pivots are provided with forwardly extending bars 32-33, the front ends of which are connected by a cross bar 34 which holds the arms 32-33, and therefore the front wheels, in parallelism with each other. Obviously, by turning one of the pivots, as 29, both front wheels may be turned in one direction or the other to guide the machine.

35 indicates a transverse bar fixedly secured to the forward portion of the tongue 20, as shown in Fig. 1. 36-37 indicate a pair of cultivator rigs arranged at one side of the machine, their forward ends being pivotally connected to the transverse bar 35 by depending links 38-39. 40-41 indicate a second pair of cultivator rigs which are arranged at the opposite side of the machine, and are in like manner connected with the transverse bar 35 by depending links 42-43.

44 indicates a casting mounted on the axle 31 at one side of the machine, and movable longitudinally thereon. Said casting is connected with the rigs 36-37 in any suitable way to cause said rigs to shift laterally in one direction or the other when the casting 44 is moved longitudinally on the axle. 45 indicates a similar casting mounted on the axle 31 at the opposite side of the machine and connected with the rigs 40-41 in a similar manner. 46 indicates a connecting bar which connects the castings 44-45 together so that they move in unison. 47 indicates an arm fixedly connected with the cross bar 34, and connected by a pin 47 with the connecting bar 46, as shown in Fig. 1, so that the castings 44-45 move transversely of the machine in unison with the cross bar 34. Thus, when the front wheels 25-26 are turned in steering the machine, the castings 4445 are shifted longitudinally upon the axle 31 in a corresponding direction, thereby laterally shifting the cultivator rigs in the same direction.

48 indicates a bifurcated lever mounted upon the tongue 20 in front of the platform 8 so as to swing back and forth. Said lever is provided with a suitable latch of any approved t vpe. adapted to engage a fixed rack 49 carried by the tongue for locking the lever 48 in its different positions of adjustment. 50-51 indicate racks secured to the members of the lever 48 at opposite sides of the tongue so as to rock with said lever. 52-53 indicate auxiliary levers mounted on pivots 54-55 adjacent to the racks 50-51, said levers having suitable latches arranged to lock the levers 52-53 in their different positions of adjustment, and serving at the same time to lock them in fixed relation to the lever 48. It will be evident, that by this mesa construction the levers 52-53'may be operated independently of the lever 48, but that when said levers are locked to their respective racks, they may be operated in unison by operating the lever 48.

56 indicates a connecting rod extending from the lever 52 to an arm 57 carried by a rock shaft 58 mounted on the casting 44, as shown in Fig. l. Said rock shaft is provided with arms 59-60 connected rcspec-.

tively with the rigs 36-37 by links 61-62. Thus by operating the lever 52, the rock shaft 58 may be rocked to raise or lower the rigs 36-37. 63 indicates a connecting rod similar to the rod 56, which connects the lever 53 with an arm 64 carried by the rock shaft 65 mounted on the casting 45. Said rock shaft is provided with arms 66-67 conneeted by rods 68-69 with the rigs 40-41, so that by operating the lever 53, the rigs 40-41 may be raised or lowered. Thus the driver may vertically adjust the rigs at either side of the machine independently of those at the other side by operating the appropriate lever-52 or 53, or may simultaneously raise or lower all the rigs by operating the lever 48. The levers 52-53 are ordinarily used to regulate the depth of cultivation, and the lever 48 to lift all the rigs out of operative position.

70 indicates a. steering shaft mounted in a vertical position at the forward portion of the platform 8 in advance of the engine 15, as shown in Fig. 1. Said shaft is provided with a steering wheel 71 at its upper end so that it may readily be turned, and carries a bevelled gear 72, which meshes with a bevelled gear 73, mounted upon a horizontal shaft 74. Preferably the shafts TO and 74 are both mounted in a suitable casting 75 secured upon the platform 8, as shown in Fig. 2. 76-77 indicate the members of anextensible steering red, by which the shaft 74 is operatively connected with the dirigible front wheels, said rod members being telescopically fitted together, as shown in Fig. 1. The member 76 is connected with the shaft 74 by a universal coupling 78, and the member 77 is provided at its forward end with a worm 79, which engages a worm wheel 80,,secured upon the pivot 29 of dirigible wheel 25. Thus, by

.rotating the steering wheel 71, the steering rod members may be rotated, thereby rotating the worm 79 and the worm wheel 80, and turning the front wheels in one direction or the other to guide the machine. The telescopic construction of the members 76-77 permits the length of the steering rod to be varied, and also provides for readil v disconnecting said members when the cultivator element is removed from the tractor element.

81-32 indicate segmental racks having hubs 83-84, which are mounted on pivots 85-86 projecting from opposite sides of the casting 75, as shown in Fig. Said racks mesh with opposite sides of a bevelled gear 87, mounted on the shaft 70 below the gear 72, as shown in Fig. 2. Each of said racks is provided with an upwardly extending foot lever 88, as best shown in Fig. 2, so that, by pressing on one or the other of said foot levers, the rack with which it is connected may be rocked about its pivot, thereby rotating the gear 87, and through it rotating the shaft 70 and gear 72 to steer the front wheels. fore, that the operator may steer the machine either by turning the steering wheel 71 by hand, or by operating one or the other of the levels 88.

In conjunction with the steering of the machine effected by turning the front wheels, as described, provision is made for automatically braking one or the other of the traction wheels at the same time, to aid in the steering operation. For this purpose levers 8990 are provided at opposite sides of the segmental racks 8182, said levers being pivoted between their ends upon the hubs Sid-84, as shown in Fig. 3, and their lower ends being connected with the arms 19-19 of the rock shafts 18IL8 at opposite sides of the machine by connecting rods 91-92 respectively, as shown in Fig. 3. The arrangement is such that forward movement of the upper end of either of the levers 89 90 will apply the brake to the

driving gear

11 or 12 at the opposite side of the machine, thereby retarding or stopping the traction wheel driven by such driving gear. This brake operated steering mechanism is not ordinarily used in guiding the machine along the corn rows, but is intended for use in making short turns, as at the ends of the field, and therefore, it is arranged to be operated automatically only when the front wheels are turned sharply. For that purpose, the segmental racks 81-82 are each provided with a pair of set screws 93-94, mounted in bosses 9596 on the outer faces of said racks and at opposite sides of the lower ends of the levers 8990, as shown in Fig. 2. The arrangement is such that by rocking the racks 8182, one or the other of the set screws 9394 may be caused to en age the lower end of the levers 89-90, which lie between them, and thereby move said levers to set or release the brakes connected with them. The set screws 93-434 of each rack are set a sufficient distance apart so that the rack to which they appertain has a considerable range of movement without bringingsaid -set screws into engagement with the lever lying between them, and one or'the other set screw 94 is arranged to engage and operate the appropriate lever to set the brake connected with it only when the front It will be evident, there wheels are turned to a sharp angle. The set screws 93 operate to release the brake that may have been set after the front wheels have been straightened up. Either or both of the brakes may, however, be set by hand independently of the operation of the front wheel steering devices by pulling back the upper ends of one or both of the levers 89-90.

Provision is also made for turning the traction wheelslaterally with reference to the front frame in conjunction with the steering of the front wheels, to aid in guiding the machine. For this purpose the steering shaft is provided at its lower end with a pinion 97 which meshes with the gear 24, as shown in Fig. 2. By this construction when the steering wheel 71 is operated to turn the front wheels, for example to the left, the platform 8 and the traction wheels will be swung to the right about the pivot 22, i. e., in a clock-wise direction as viewed in Fig. 1, thereby enabling the machine to make a short turn toward the left without turning the front wheels so sharply as to apply the brakes. If de sired the platform 8 may be non-rotatably secured to the tongue 20 by passing the pin 23 through the platform into engagement with a suitable socket in the gear 24, as indicated by dotted lines in Fig. 2, and by then disconnecting the pinion 97 from the shaft 70 by withdrawing the pin 98 shown in Fig. 2, the front wheels may be steered independently of the traction wheels. The pinion 97 then remainsloose on said shaft, resting on the support 21.

The machine illustrated and described is a two-row machine, the tongue20 overlying the space between two rows, while the wheels travel outside of said rows. In order to loosen the soil along the rows traversed by the traction and front wheels, which is apt to be pressed down considerably by the weight of the machine, we provide two sets of spring teeth 99-100, disposed back of the traction wheels 45, respectively, and carried by a rock shaft 101, mounted in suitable bearings at the rear of the platform 8. Said rock shaft is provided with an arm 102, which is connected by connecting rod 103 to the lever 48 in such manner that when said lever is operated to lower the cultivator rigs into operative position, the spring teeth 99100 can also be lowered into operative position, and. vice versa. Thus, when the cultivator is in operation, said spring teeth will loosen the soil back of the traction wheels, and when the cultivator rigs are raised, as in turning around or moving the machine from one field to another, the spring teeth will be held up out of operative position. 104 indicates the drivers seat which is suitably mounted on the platform 8 in a convenient position back of the steering wheel 71, as shown in Fig. 1.

A salient characteristic of our improved cultivator is that it comprises a oweroperated pushing member located behind the earth working tools in connection with means pushed by said pushing member and operating to pull the tools and also to guide the cultivator. By this construction the operator who sits back of the tools and at the front of the pushing member has a clear and unobstructed view of the corn rows and also of the cultivator shovels, and consequently may accurately follow the rows and (lodge plants which are more or less out of line. The arrangement of the cultivator rigs between the dirigible front wheels and their pivotal connection with the front frame in advance of the axes of said wheels, together with the provision of means for shifting the rigs laterally when the wheels are turned in steering the implement, also conduct to accurate operation of the cultivator by the operator since the cultivator shovels are brought forward so that they engage the soil on transverse lines substantially in the transverse vertical planes of the front wheels, and therefore, when it is necessary to dodge a plant the shovels are shifted laterally coincidently with the turning of the steering wheels instead of afterwards. The time when and the extent to which the shovels are shifted is, therefore, under the accurate control of the operator, and accordingly the work of cultivating may be more eiiiciently performed.

\Vhat we claim as our invention, and desire to secure by Letters Patent, is

1. In a cultivator, the combination of earth working tools, a power operated pushing member located behind said tools, means pushed by said pushing member and operating to pull said tools, means for steering the cultivator, and means operated by said steering means for moving the tools laterall in a directioncorresponding with that in w ich the cultivator is directed.

2. In a tillage implement, frbnt steerable supporting means, rear traction and supporting means, a frame connecting said front and rear supporting means, power means mounted on the frame and connected to said traction and supporting means, earth working tools adapted to be shifted transversely in either direction through the soil and supported by the forward portion of the frame, and means for steering said front supportin means and for simultaneously giving said tools supplemental shifting movement transversely with relation to the frame and supporting means.

3. In a cultivator, the combination of a frame, steering wheels at the front of the frame, a tractor element at the rear of the frame, soil working tools connected with the front portion of the frame and arranged to engage the soil on transverse lines in the devices laterally relatively transverse vertical planes of the steering wheels, a motor on the frame, means for transmitting power from the motor to the tractor element, means for steering the steering wheels, and means operated by the turning of the steering wheels laterally in either direction for shifting the soil working tools laterally in the corresponding direction.

l. In a cultivator, the combination of a frame, steering wheels at the front of the frame, a tractor element at the rear of the frame, laterally-adjustable tool carriers connected with said frame in front of the axes of the steering wheels, earth working tools carried by said tool carriers and arranged to engage the earth on transverse lines in the transverse vertical planes of the steering wheels, means for adjusting the steering wheels, and means for adjusting the' tools simultaneously with the adjustment of the steering wheels.

5. In a cultivator, the combination of a frame, steering wheels at the front of the frame, a tractor element at the rear of the frame, laterally-adjustable tool carriers connected with said frame in front of the axes of the steering wheels, earth working tools carried by said tool carriers and arranged to engage the earth on transverse lines in the transverse vertical planes of the steering wheels, a drivers support between the tractor element and the earth working tools, means for adjusting the steering wheels, and means for adjusting the tools simultaneously with the adjustment of the steering wheels.

6. An agricultural implement comprising a motor driven tractor element, cultivating devices disposed in advance thereof and adapted to be propelled thereby from the rear, diri ible front wheels at opposite sides of the en tivating devices, and means connecting said cultivating devices with said Wheels in advance of the axes thereof.

7 An agricultural implement comprising a motor driven tractor element, cultivating devices disposed in advance thereof and adapted to be propelled thereby from the rear, dirigible front wheels, means connecting said cultivating devices with said wheels, and means operated by the steering of said wheels for moving said cultivating to said wheels in conjunction with the turning of said wheels in steering the implement.

8. An agricultural implement comprising a motor driven tractor element, cultivatin devices disposed in advance thereof an adapted to be propelled thereby from the rear, dirigible front wheels, means connecting said cultivating devices with said wheels in advance of the axesthereof, and means operated by the steering of said wheels for moving the cultivating devices laterally relatively to said wheels in conjunction with may be guided when in operation, and cultivating means at the forward portion of said frame between said wheels and connected therewith in advance of the axes about which the dirigible means turn in steering the implement.

10. An agricultural implement adapted to be propelled from the rear, comprising a motor driven tractor element, a front frame pivotally connected therewith to swing laterally, cultivating devices disposed in advance of said tractor element, and connected with said frame and dirigible, means con nected with said front frame at opposite sides of said cultivating devices.

11. An agricultural implement adapted to be propelled from the rear, comprising a motor driven tractor element, a front frame pivotallv connected therewith to swing laterally, irigible means connected with said front frame, and cultivating devices between said dirigible means and connected with said frontframe in advance of the axes about which the dirigible means turn in steering the implement.

12. An agricultural implement comprising a front frame adapted to be propelled from the rear, dirigible means and cultivating devices connected with said front frame a motor driven tractor element back of said cultivating devices and connected with said front frame, means for steering said dirigible means, and means for turning said tractor element laterally with relation to said front frame to aid in steering the imple ment.

13. An agricultural implement comprising a front frame adapted to be propelled. from the rear,-dirigible means and cultivat ing devices connected with said front frame, a power-propelled tractor back of said culitivating devices, means for steering said dirigible means, and means for turning said tractor laterally to aid in steering .the implement.

14. An agricultural im lement comprising a front frame adapte to be prolpelled from the rear, dirigible means and on tivating devices connected with said front frame, a powerropelled tractor back of and connected with said front frame,- and means adapted to be operated to steer said dirig ible means and to simultaneously turn said powerlpropelled tractor laterally.

15. n ing a front frame adapted to be propelled from the rear, dirgible means supportlng agricultural implement compris-- the front frame, a motor driven tractor element pivotally connected with said front frame whereby it may turn laterally at an angle thereto, cultivating means between said dirigible means and connected with said front frame in advance of the axes about which said dirigible means turn in steerin the implement, and means for movin sai cultivating devices laterally to one side or the other when said dirigible means are turned in steering the implement.

16. An agricultural implement comprising a member having traction wheels, power operated differential mechanism for driving said wheels, brakes for said wheels, a frame connected with said member, dirigible front wheels connected with said frame, means for steering said dirigible wheels, cultivating devices in advance of said traction wheels and connected with said frame, and means cooperating with said steering means for braking one or the other of said traction wheels.

17. An agricultural implement comprising a member having traction wheels, power operated differential mechanism for driving said wheels, separately operable brakes for said wheels, a frame connected with said member, dirigible front wheels connected with said frame, cultivating devices between said front wheels and connected with said frame, and means for steerin said dirigible wheels.

18. n agricultural implement adapted to be propelled from the rear, comprising a member having traction wheels, power operated difl'erential mechanism for driving said wheels, brakes for said wheels, a frame connected with said member, dirigible front wheels connected with said frame, means for steering said dirigible wheels, cultivating devices connected with said frame in advance of the axes of said dirigible wheels,

, and means cooperating with said steerin means for braking one or the other of said traction wheels.

19. An agricultural implement adapted to be propelled from the rear comprising a member having traction wheels, ower operated dilferential mechanism for riving said wheels, separately operable brakes for said wheels, a. frame connected with said member, dirigible front wheels connected with said frame cultivating devices between said front wheels and connected with said frame in advance of said front wheels, and means for steering said front wheels.

20. An agricultural implement comprising a. member havin traction wheels, power operated differential mechanism for driving said wheels, brakes for said wheels, a front frame connected with said member, dirigible front wheels connected with said front frame, means for steering said front wheels and simultaneously turning said connected with said front frame, cultivating devices pivotally connected with said frame, lifting mechanism for said cultivating devices, means arranged back of said traction wheels for loosening the soil 'behind the same, and means operated b said lifting mechanism for lifting sai soil loosening means out of operative position.

22. In a cultivator, the combination of the frame, traction means at the rear end of the frame, the two steering wheels at the front end, means connected to the steering wheels for transmitting power thereto to turn them, the soil working tools arranged to engage the soil on transverse lines in the transverse planes of the steering wheels, carriers for the tools laterally and bodily movable on and relatively to the frame, devices for connecting said carriers to the steerin wheels, the engine on the frame, and tie power transmitter interposed between the engine and the traction means whereby all the tools are uniformly movable transversely with the steering wheels and relatively to the frame.

23. In a cultivator, the combination of the frame, the steering wheels at the front end of the frame, the tract-ion means at the rear end, the engine on the frame connected to the traction means, the soil working tools on the frame and arranged on transverse lines in the transverse vertical planes of the steering wheels, the series of tool carriers laterally and bodily adjustable on the frame, means connecting the tool carriers with the steering wheels, and manual devices for adjusting the tool carriers.

24. In a cultivator, the combination of the frame, the traction means at the rear,

end of the frame, the steering wheels at the front end thereof, the engine on the frame, connected to the traction means, the

bodily and laterally adjustable tool carriers, the tools adjustable with and also relatively to the carriers and all positioned to engage the earth on lines in the transverse vertical planes of the steering wheels, means for manually adjusting the steering wheels, means for manually adjusting the tools, and devices for optionally connecting together the two said adjusting means.

25. In a cultivator, the combination of the frame, the traction means at the rear end of the frame, the engine on the frame connected to the traction means, the steering wheels at the front end of the frame, the tools positioned to engage the earth on lines in the transverse vertical planes of the steering wheels, and manually operable means for adjusting the steering wheels and the tools independently or simultaneously at opt1on.

26. In a cultivator, the combination of the frame, the transversely aligned steering wheels near the front end of the frame, the laterally adjustable tool carriers, the support on the frame for said carriers arranged in front of the axes of the steering wheels,

the tools supported by the carriers and arranged to engage the earth at lines on the transverse planes of the steering wheels, the traction means at the rear end of the frame, the driver's support between the traction means and the tool gangs, means for bodily adjusting the tool gangs laterally, means for adjusting the steering wheels, and means for actuating the steering wheels simultaneously with the movements of the tool gangs.

27. In an earth working or tillage implement, the combination of a frame, traction means at the rear end of the frame, power means on the frame connected to ,the traction means, steering wheels at the front end of the frame, gangs of earth working tools adapted to be shifted manually transversely in either direction through the surface part of the earth and supported by the front end part of the frame, and means for steering said wheels and simultaneously moving said gangs relatively to said wheels and transversely of said frame.

28. In a machine of the character described, the combination of a power unit having laterally arranged traction wheels, a frame arranged forwardly of the traction unit to be pushed thereby, primary earth working tools connected with said frame to engage the ground areaspanned by said traction wheels, secondary earth working tools arranged to engage the earth traversed by the respective traction wheels, and means for simultaneously raising and lowering the primary and secondary earth working tools.

29. In a machine of the character described, the combination of a power unit having laterally arranged traction wheels, a frame arranged forwardly of the traction unit to be pushed thereby, primary earth working tools connected with said frame to engage the ground forwardly of the power unit, ranged rearwardly of the traction wheels, a lifting mechanism, and means operated by said liftin mechanism for lifting all of the earth wor ing tools out of operative position.

30. An agricultural implement adapted to be propelled from the rear comprising a power unit having traction wheels, a front frame arranged forwardly of the power unit secondary earth working tools arto be pushed thereby, gangs of primary earth working tools connectfid with said frame, secondary earth working tools arranged back of said traction wheels, devices for respectively adjusting said gangs, means for collectively lifting said gangs out of operative engagement with the earth, and means operative by said lifting means for raising said secondary earth working tools.

31. A machine of the character described comprising a power unit having laterally arranged traction wheels, a front frame adapted to be pushed by said power unit, dirigible means and cultivating devices connected with said frame, a steering device, means operative upon an initial movement of the steering device for actuating the dirigible means, and means operative upon a secondary movement ofthe steering device for braking one of the traction wheels.

32. A machine of the character described comprising a power unit having laterally arranged traction wheels, a suitably supported frame arranged forwardly of the power unit to be pushed thereby, earth engaging devices connected with said frame, a steering device, means operative by an initial movement of the steering device for changing the direction of the frame, and means operated by a secondary movement of the steerin device to brake one of the traction wheels.

A machine of the character described comprising a power unit having laterally arranged traction wheels, a frame pivotally connected to the power unit forwardly thereof, dirigible wheels and earth engaging devices connected with same frame, a device for steering the machine, means operative upon an initial movement of the steering de vice for turning said frame and dirigible wheels with respect to the power unit, and

vmeans operative by a secondary movement of the steering device for braking one of the traction wheels. A

34. A power propelled tillage implement having in combination a front frame, one or more dirigible wheels supporting said frame, a plurality of gangs of cultivating devices connected with the said frame and adapted to be swung laterally, a second a frame adjustably connected tothe rear of the cultivator frame, means for angularly adjusting said frames for steering the implement, power driven frame-pushing devices mounted on the second frame and engaging with the ground at a transverse line in the-rear of the said dirigible wheels and of the cultivatim devices and means connecting the dirigilile wheels and the gangs, whereby, when the gangs are being ushed from the rear and are being shifte laterally the dirigible wheels are simultaneously steered.

35. In an apparatus of the class described, the combination of a frontframe, dirigible wheels supporting said frame, a plurality of gam s of cultivating devices carried by the saic frame and adapted to be swung laterally .relativel to the frame, a second frame connecte to the rear of the cultivator frame and adapted to be adjusted angularly in relation thereto, means for so adjusting said frame to steer the apparatus, power-driven frame-pushing devices mounted on the second frame and engaging with the ground on a transverse line in the rear of the dirigible wheels and of the cultivating devices, an initial power receiving device for shifting the gangs laterally and connectcd to the dlrigible wheels'for simultaneously steering said wheels while the gangs and wheels are being pushed from the rear.

36. In an apparatus of the class described,

'the combination of a front frame, dirigible wheels supporting said frame, means for optionally turning said wheels for steering, a plurality of gangs of cultivating devices on the said frame adapted to be swung laterally relatively thereto, a second frame, means for connecting the second frame to the rear of the cultivator frame and adapted to steer the second frame independently of the steering action of the aforesaid dirigible wheels, power-driven, frame-pushing devices mounted on the second frame and engaging with the ground at a transverse line in the rear ofthe dirigible wheels, and means connecting the gangs to the dirigible wheels whereby when the cultivating devices are being pushed from the rear and simultaneously sifted laterally, the dirigible wheels are also simultaneously steered.

37. An apparatus of the class described,

having in combination a cultivator, dirigible wheels supporting the cultivator, gangs of cultivating devices adapted to be swung laterally in unison ano-und vertical axes, a second frame pivotally connected to the rear of the cultivator, means for controlling the pivotal relation of the frames, power-driven frame-pushing devices mounted on the second frame and engaging with the ground at a transverse line in the rear of the said dirigible wheels, means for shifting the gangs laterall and simultaneously turning the dirig-ib e wheels and supplemental means for o tionally steering the second frame and tie power-driven ground engaging devices.

38. In a cultivating mechanism of the class described, the combination of a frame, dirigible wheels connected to and supporting the frame, tool gangsconnected to the frame and adapted to swing laterally in relation thereto around vertical hinges, power devices for propelling said frame, gangs and wheels, and means connecting the tool gangs and the wheels for swinging the gangs laterally and simultaneously swinging the wheels and means for steering said mechanism independently of said gangs.

39. A self propelled implement having a frame, front steerable supporting means and rear driven supporting means for said frame, and earth-working means at the front part of said frame shiftable collectively in the same direction transversely relatively to said frame and steerable supporting means by the operator from his seat.

40. A self propelled implement having a frame and operators station thereon, front supporting means and rear supporting means for said frame, a motor on said frame for driving the support-ing means at one end of the frame, earth-working means connected to the forward portion of the frame for shifting movement collectively in the same direction relatively to said frame and the front supporting means on transverse lines forward of the rear supporting means, and

means for shifting the earth-working means operable from the operators station.

41. A self propelled implement having supporting means at each end thereof, cultivating means carried by said implement for shifting movement on transverse lines, means for turning the supporting means at one end to steer the implement, and common control means for effecting the turning of said supporting means and for giving said cultivating means, lateral shifting movement supplemental to that of the turning movement of the supporting means.

42. A self propelled implement having a frame, supporting means at the front'part of the frame, driven supporting means for the frame, cultivating means connected to the frame and shiftable on transverse lines forward of the driven means, means for shifting the cultivating means transversely relatively to the frame and front supporting means, steering mechanism acting as one of said supporting means, and means of common control for the shifting means and steering mechanism.

43. An implement having a frame, steer able supporting means at the fnont end of the frame, traction and supporting means at the rear of the frame, power means mounted on the frame and connected to said traction and supporting means, cultivating means connected to said frame fortranslatire shifting movement relatively to the frame and front supporting means on transverse lines in advance of the traction and supporting means, and means for simultaneously steering the front supporting means and shifting said cultivating means.

44. An implement having a frame, steerable front supporting means for said frame, driven supporting means at the rear of the frame, power means on the frame and connected to said driven supporting means, cultivatin means connected to the frame and shiftab e on transverse lines in advance of ing means and a. hand steering wheel for turning said front supporting means, said shifting means having means of connection to the hand steering wheel whereby steering and the shifting of the cultivating means will be simultaneously effected.

45. The combination com rising a machine frame having a front w eeled support, a rear wheeled support, a motor on the frame for driving one of said wheeled sup ports, steering means acting on one of said supports, tillage tools having beams, and means to support the beams connected to the frame in advance of the axis of said front wheeled support, said beams extending rearwardly beside said wheeled support.

46. The combination comprising a machine frame having steerable front supporting means and motor driven rear traction and supporting means, and tilla e tools having beams the front ends of w ich are attached to supporting means extending from the frame in advance of said steerable front supporting means, said beams extending rearwardly to points behind said steerable supporting means.

4 The combination comprising a machine frame having front steerable wheels, motor driven rear traction means, tillage tools having beams, and means to support the beams connected to the frame in advance of the axis of said wheels, said beams extending rearwardly beside the wheels.

48. The combination comprising a machine frame having steerable front support ing means and motor driven rear traction means, tillages tools having beams the front ends of WhlCh are attached to supporting means extending from the frame in advance of the front supporting means, said beams extending rearwardly beside the steerable supporting means, and unitary control means for steering the front supporting means and simultaneously shifting the tool beams.

49. The combination comprising a machine frame having steerable front supporting means and motor driven rear traction means, tillage tools supported on the forward portion of the frame by means permitting lateral shifting thereof relatively to the frame, and unitary control means for turning the front supportin means and simultaneously shifting the ti lage tools laterally in the same direction.

50. In a tillage implement, front steerable supporting means, rear traction and suporting means, a frame connecting said front and rear supporting means, power means mounted on the frame, cultivating shovels supported from the frame and located beneath said frame and forward of the traction and supporting means, said operators station, I and steerable supporting means on sald porshovels being disposed transversel onboth sides of the central lon 'tudinal line of the frame to extend outwa 1y to at least longitudinal lines passing through the treads of the rear traction means.

51. An agriculture implement having a frame, steerable front supporting means therefor, motor driven rear traction wheels cultivating means including pairs of tool beams ositioneddn opposite sides of the central ongitudinal axis of the frame with the tools carried thereby located forward of the axis of the traction wheels and beneath said frame and extending laterally to the longitudinal lines of the treads, and means connecting the forward ends of the beams to the frame in advance of the axis of the rear wheels, each pair of beams being positioned to straddle a row of plants at one side of the central longitudinal axis of the frame.

52. A self propelled tillage implement comprising a frame having a transversely extended rear portion with an operators station thereon, a lon itudinal portion of said frame extending orwardly from said rear portion and constructed to afford substantially unobstructed view of the ground below and ahead from the direction of the driven supporting means tions of the frame respectively, and cooperatin gangs of tillage tools suspended beneat the frame and located in advance of the transverse portion and symmetrically disposed on opposite sides of said long1tu-' dinal frame portion.

53. The combination comprising at machine frame, front steerable suppo ting means therefor, motor driven rear tra tion wheels. cultivating means comprising pairs of tool beams positioned on opposite sides of the-central longitudinal axis of the frame and inside the tread of the traction wheels with the forward ends of the beams attached to supporting means extending from the frame in advance of the axis of the steerable supporting means, each pair of beams being positioned to straddle a row of plants at one side of the central longitudinal axis of the frame.

54. The combination in a motor driven tillage implement, of a frame comprising a transversely extended rear portion, traction wheels supporting said rear portion, a relatively narrow longitudinal frame portion extending forward from said rear and steerable means supplorting sald forward ortion, a motor on t e frame and connected to the traction wheels, co-operating gangs of earth working tools occupying a zone substantially co-extensive with the width of the rear portion of said frame and sai narrow forwar portion carryin beams connected to the forward end of sai narrow ortion of the frame by: means including aterall shiftable connections, and unitary contro means for operating said steerable means and simultaneously slnftin said beam connections.

55 1e combination in a motor driven tillage implement, of a frame comprising a transversely extended rear portion, traction wheels supporting said rear portion, a relatively narrow longitudinal portion extending forward and centrally from said rear ortion and steerable means so porting said orwarddportion, a motor on t e frame and connecte to the traction wheels, co-operat- 1n gangs of earth working tools symmetrica 1 disposed on opposite sides and beneath portion and occupying a zone substantially co-extensive with the width of the rear portion of said frame and having carrying beams connected to the forward end of said narrow portion of the frame by means including aterally shiftable connections, and unitary control means for operating said steerable means and simultaneously shifting said beam connections.

56. An agricultural implement having a frame, front supporting means for said frame, rear motor driven'supporting and traction means, cultivating means having beams connected to the frame forward of the axis of the rear traction and sup orting means b means permitting collective lateral shl ing movement of said beams relatrvely to the frame said front supporting means being adapted" to be angled relative to said beams, means for angling said front support means and additional means operab e upon the d effect a short turn of the implement.

57. A self propelled implement comprising a-frame having a transversely extended rear portion adapted to span at least two plant rows, motor driven traction wheels at the ends of said portion, a longitudinally extending frame portion projecting forwardl m said rear portion andhaving swive ed gutding means supporting the forward end thereof, tool gangs having means of connection to the frame forward of the axis of the traction wheels and disposed in pairs at each side of the longitudinal axis of the "frame, said connecting means permitting collective lateral shifting of the gangs relativelyto the frame, means for turning the front supporting means relatively to the frame and tool an to guide the implement, and additions means for governing the drive to each traction wheel to effect a short turn of the implement.

58. The combination comprising a machine frame having steerable front supportmg means and, a pair of differentially motor driven individually brake controlled rear traction units, tillage tools supported on the frame by means permitting lateral shifting of the tools relatively to the frame, and a single control device for steering the front supporting means, shifting the tools, and selectively controlling the brakes of the traction units.

59. The combination in a tractor cultivator, of a machine frame, steerable front supporting means for the frame, a pair of differentla'lly driven individually brake controlled traction units supporting the rear of the frame, tillage tools sup rted onthe front portion of the frame y means perinitting lateral, shifting movement thereof with respect to the frame, control mechanism including a. manually operable steering wheel for turning said front sup orting means and simultaneously shifting said tools in the same direction, and means operable by manipulation of said steering wheel for braking the proper traction unit to increase the steering effect.

60. An agricultural implement comprising a machine frame hav ng motor driven supporting and traction means, diri ible means also an porting said frame, t' lage tools sup ortetf on the frame by means permitting ateral shifting movement of the tools with respect to the frame and the front supporting means, means for impart ing limited steering movement to the d rigible means and simultaneously shiftin the tools, and means in addition to sai dirigible means for causing the implement to make a short turn.

61. An agricultural implement comprising a machine frame having motor driven supporting and traction means, dirigible front su porting means for said frame, tillage too supported on the front of the frame by means permitting lateral shifting movement of the tools with respect to the frame, means for imparting limited turning movement to the front supportin means and simultaneously shifting the too laterally in the same direction, and means in adfor causing the implement to makes short a turn, and a single manually operable device for controlling the, dirigible means and shifting means and the short turning means.

63. The combination comprisinga machine frame, supporting and propelling means therefor comprisin a pair of differentially driven individua y controlled traction units, tillage tools supported at the front of the frame by means permitting latcral shifting movement thereof with respect to the frame,', and control mechanism for shifting said tools laterally and also governing the drive of each traction unit.

64. In a tillage implement, front steer able supporting means, rear traction and supporting means, a frameconnecting said front and rear supporting means, a motor o11 tl1e frame and connected to drive the traction means, cultivating shovels su ported from the frame and located beneat i said frame and forward of the traction and supporting means, said shovels bein disposed transversely on both sides of tie central longitudinal line of the frame to extend outwardly to at least longitudinal lines assing through the treads of the rear whee s, and means for governing the drive to each traction means to efiect a short turn of the implement.

Signedat Chicago, Illinois, this 17 day of March, 1926.

ANDREAN G. RUNNING. ADOLPH RONNING.

Certificate of Correction.

It is hereby certified that in Reissue Letters Patent No. 16,352, granted May 18. 1926, upon the application of Andi-can G. Ronning and Adolph Ronning, of Minneapolis, Minnesota, for an improvement in Tractor Cultivators, errors appear in the printed specification requiring correction as follows: Page 7, line 31, claim 32, for the word operated read operative; same page, line 101 claim 36, after the syllable by insert a comma; age 8, line 44 claim 42, for the Word as read on; page 9, line 103, claim 56., or the Word support read supper-ti and that the said Letters Patent should be read with these corrections therein that the same ma. conform to the record of the case in the Patent Oflice.

Sign and sealed this 301 day of August, A. D. 1926.

fsm1,. i M. J. MOORE,

Acting Omnmz'asioner of Patents.