US2065397A - Power grader - Google Patents

Description

Dc. 22, 1936. A. RONNING POWER GRADER Filed Deo. 19, 1955 5 Sheets-Sheet l INVENTOR HDOLPH RONN ING ATTORNEY Dec. 22, 1936. A. RNNING 2,065,397

POWER GRADER Filed Dec. 19, 1935 5 Sheets-Shea?I 2 INVENTOR HDOL Ph' PONNING ATTOR N EY v22, 1936. A, RONNING 2,065,397

POWER GRADER Filed Dec. 19, 1935 5 Sheets-Sheet 5 Ilz 90 lNvENToR ADOLPH RoNNmG BY ATTRNEY A. RONNING l POWER @TRADER Dec. 22,1936.

5 Sheets-Sheet 4 Filed Deo. 19, 1935 INVENTOP ADoLPH Pme BY I/ ATTORNEY Dec. 22, 1936. A, RONNNG 2,065,397

POWER GRADER ATTORNEY attacca ron @nanna ddclph lltong, Minneapolis, y

w lili FIM This invention relates to power driven and power controlled road grading machines, and a main object is to provide an eincient and practical machine embodying various featuresand combinations of features that will permit of economyin manufacturing cost, simplicity in design, ruggedness of use, and ease of operation and control. The invention contemplates the employment of conventional tractor parts, vfor reasons oi economy and emcien'cy, and to this end the tractor is separated, longitudinally, and reassembled in a new organization, much in the manner disclosed in my copending applications Ser. No. 35,727, iiled August 12th, 1935, for Power grader, and Ser. No. 52,126, filed November 29th, 1935, for 'Traction machine. In this arrangement, the power plant being disposed in a forward position with respect to the grading implement, and the wheel base being substantially lengthened, the

machine is subjected to greater stability, the

weight is better distributed for the work. to be done, the engine is removed from proximity with the operator, and does not interfere with full view of the tool and work being done.

As a further object the present invention concerns itself largely with the tool support and position controlling mechanism, and to that end I provide unique and novel tool mounting and power operated adjusters which, under sensitive control of the operator, will immediately adjust the operative position of the tool with respect to the road surface and also longitudinally with respect to the supporting frame, the last mentioned adjustment also being operative to effectively shift the centerl of gravity of the machine to secure results, under y units in question are not shown in full detail inasmuch as they follow the design disclosed in my United States Patent No. 1,883,404, issued October 18th, 1932, for Road maintainer, and division Patents No. 2,005,243, issued June 18th, 1935, for Power operated control mechanism' and No. 2,027,618, issued January 14th, 1936, for Power transmission; and particular attention is directed Y to the last two of these patents for a full disclosure of the control unit as'here incorporated.

A further object is-to so design the machine that the implement 'will require a minimum amount ci vertical clearance, when raised from the ground, thus eliminating the necessity oi arching and thus weakening the main i'rame or raising it to a level where it will proportionately raise the center of gravity, or be in an objectionably high position. A further object is to. provide a novel and practical implement elevating unit which is not only simpleand efficient, but which will exclude dust and dirt from the working parts. These and still further and more detailed objects will be disclosed in the course of the following specication, reference being had to the accompanying drawings, wherein:

Fig. 1 is a side elevation of the machine, with the near traction wheel removed, and with certain parts in section. for purpose of illustration.

Fig. 2 is a plan view of the machine as shown in Fig. 1, but with the cabin section to show the arrangement of controls with respect to the operators. station.

Fig. 3 is an enlarged detailelevation through one of the blade lifting units, as seen substantially on the line -i-iin Fig. 1, but looiring in a direction at right angles to the plane oi? the blade.

Fig. 4 is an enlarged detail vertical section through a bracket housing which 'supports the .front end of one of the longitudinal 4control screws.

Fig. 5 is an enlarged detail section on the line 5 5 in Fig. A1.

Fig. 6 is an enlarged rear end elevation of a.

modified form. of machine, as shown in Figs. `I and 8, with certain parts in section and others broken away for purpose of illustration.

Fig. 7 is a plan view of the machine with certain modifications, and with the front portion of the machine removed in'asmuch as such portion-is the same as that shown in Fig., 2.

Fig. 8 is a side elevation of the structure shown 'in Fig. 7, but with certain parts removed.

Fig. 9 is an enlarged sectional elevation on the line 9-9 in Fig. 7, and with parts broken out to illustrate certain features. l

Fig. 10 is adetail' elevation, partly in section, showing a modified form oi. lifting unit as disclosed at the left -in Fig. 9.

Fig. 11 is a detail section on the line iI-l I in Fig. 10.

As in myprevious applications Ser. No. 35,727

.and 52,126, I here preferably utilize a tractor of the general type known in the trade as the Fannall, as such tractor can be easily and quickly separated longitudinally into two spaced units, and these units then harnessed in to a connecting main frame.

The front unit of the tractor, as here employed, includes the vpower plant or engine I2, radiator I3, and steering truck I4 which is controlled by hand wheel I5 through an extension shaft I6.

'The power plant I2 also incorporates the clutch unit housed within a casing I1 at the rear of the engine.

The front unit of the tractor as thus detached from the ,rear unit, is harnessed into and rigidly secured to a main frame structure winch includes a pair of heavy channel iron side beams I8 which converge forwardly where they are secured as at I9 to the front end of the power plant. At an intermediate point between their front and rear ends the frame beams I8 are rigidly connected by a cro'ss beam 20 to which the rear end of the power plant is secured.-

The rear tractor unit is supported on transversely spaced, relatively large traction wheels 2|, and includes transmission, differential, drive shaft, and brake mechanisms, all enclosed by rigidly connected housings which, with said mechanisms, form a conveniently grouped assembly which is readily detachable from the front tractor unit. Thus the transmission housing 22 joins with the differential housing 23 which in turn has lateral, hollow extensions 24 enclosing the drive shafts 25 for driving the wheels 2|, and cooperate to form a transverse beam terminating at its ends and adjacent the wheels 2| in drive gear and brake housings 26.

The-rear unit also includes a draft frame 21 which in the normal tractor supports an operators platform 28. The conventional tractor also has an operators seat which has here been removed, but in the structure shown in Figs. 1 and 2, I have shown a cab 29 which is supported on the draft frame 21 and is otherwise suitably secure'd to the rear end of the machine; and this cab contains a seat 30 which is forwardly and rearwardly adjustable on a frame 3|, and the frame 3| is in turn vertically adjustable on guide members 32 secured to the rear wall of the cab 29.

The rear ends of the beams I8 have plate exy Y result that the rear tractor unit is rigidly secured to the rear end of the beams I8. In the normal tractor the transmission housing.22 is disposed adjacent to the clutch housing I1, and has a shaft 35 which is driven from the clutch mechanism. In the rearranged construction the clutch drives the transmission mechanism through an extension shaft 36 which directly connects the two units or, as shown in my application Ser. No. 52,126, may be upwardly offset and driven through intermediate power transmitting mechanisms.

The engine clutch in the converted machine is operated by an extension rod 31 which attaches at its rear end to a foot pedal 38 mounted within convenient reach of the operator. The power transmission is controlled by a shift lever 39, and the tractor transmission also normally includes a shift lever 40 for engaging and disengaging the power take-off shaft which is conventionally provided for the purpose of supplying power to mechanisms and devices that may be associated with the tractor, and which require power application independently of the ground wheel travel.`

In the present instance the power take-off y shaft extends longitudinally through the trans-l mission housing 22, and is designated by the numeral 4I. This shaft extends both forwardly and rearwardly outside of the casing, and in the machine shown in Figs. 1 and 2 both ends are utilized for the purpose of supplying power to different adjusting mechanisms. Thus I attach to the rear end of shaft 4I a short extension 42 which extends rearwardly under the dierential housing and into a bracket 43 which is secured to the differential housing and contains intermeshing bevel gears (like 44 and 45 in Fig. 6), the first of which is mounted on shaft 42, while Vthe second of which is secured to the lower end of The control unit 41 is constructed like that.. shown in my Patent No. 2,027,618, issued January 14th, 1936, wherein the driving shaft 8 applies power selectively or simultaneously and" in either direction of rotation to shafts I0 and II through friction clutches 20, 2|, 25, and 26 controlled by a shift lever I2. In the present disclosure a corresponding shift lever 48 controls the unit 41 to similarly transmit and apply power from the shaft 46 to shafts 49 and 50 extending from unit 41 through sleeves 5I, so that the shafts 49 and 50 may be driven selectively or simultaneously, and in either direction of rotation.

As shown in Figs. l and 2, the shafts 49 and N15|] operate through bevel pinions (similar to sections, so that they will rotate in unison while permitting the shaftsto be extended and contracted during operation of the machine.

At their front ends the shafts 53 are provided with universal joints 54, and worms 55 which mesh with worm gears 56 in housings 51 (see Fig. 3). Eachgear 56 is held against vertical movement in and by the housing, and is internally threaded to receive the Screw/ threads 58 of a heavy vertical bar 59, with a result that when the gear 56 is rotated the bar 59 will be moved up or down depending upon the direction of rotation of the gear. The bar 59 guides in upwardly and downwardly extending sleeves 60 and 6I which are rigid with the.casing 51 and serve to protect the threads 58 from dust and dirt while also functioning to maintain a lubricant supply for facilitating adjustments of the bar. Upon the upper end of the bar 59 I place a normally inactive co'il spring 62, which will contact against the upper, closed end of the sleeve 60 to cushion the stopping of the ba'r 59 should it inadvertently be raised too high, and thus' eliminate any possibility of damage to the power transmitting and control mechanism.

At their lower ends the bars 59 are pivoted as at 63 to brackets 64, in which brackets are rotatably secured collars 65 having square axial holes through which pass a square beam 66, this beam being rigidly secured at spaced points throughout its length to the grader blade 61, as by brackets 68.

Theface angle of the blade 61 with respect to the road surface is adjusted by turning the collars 65 in the brackets 64, and these members are provided with holes 69 in which a removable pin is selectively secured to lock the adjustment. The pivot connections 60 permit angular adjust- 1 ments of these members 11 on the'frarne beams is (Figs. 2 and 5).

ments of the blade transversely with respect to the machine under movementof one or the other of the bars 59, and as -such movement changes the center distance-between the two pivots t3, the unit tt-l at the left side of the machine is free to move longitudinally withv respect to the beam t6. To provide for transverse shifting of the blade with respect to the machine I provide a threaded bar 111 which is journaled Aupon the back of the blade 01 and screws, through one of the brackets t4 (Fig. 3). This bar is manually rotated by a hand wheel 11, acting through a rear shaft section 12, a telescopic section 13, universal joints 14 and 15, and a worm and worm gear unit 16.

The blade lifting and lowering screw lift units 53--65 are respectively carried by block members 11 which are'disposed upon the outer sides of the beams IB but are slidably secured thereto by flange portions 18. The longitudinal adjustwith respect tothe direction of travel, and also 1 to shift the entire blade and its supporting units longitudinally of the machine. This may be done to better position the blade with respect to the operator and ground wheels, and also functions -to alter the center of gravity so as to better distribute the load under different working conditions.

The adjustments last above referred to are accomplished by engine power manually controlled by a shift .lever 19 of a control unit 80 This unit is in all essential respects identical with unit 41,f and with the unit disclosed in detail in my Patent No. 2,027,618. In the present instance rotation of a shaft 8| is selectively, simultaneously, and reversibly applied to cross shafts 82 andBS. The shaft 8| is driven by sprocket chain 84 from the front end of the transmission. take-off shaft 112. The cross shafts 81 and 83 operatethrough bevel pinions to (Fig/y. 5), to rotate long threaded shafts 8111 which are longitudinally journaled as at 81 in the channels Aof the beams 10. These shafts t8 are threaded in nuts placed in square sockets, in lugs 09 of the traveller blocks 11 (Fig. 3) with a' result that when the shafts tt are rotated the, blocks ,11, together with the blade and blade lifting units will be correspondingly adjusted longitudinally of the frame 1t.

lin the modified form of machine illustrated in Figs. 6 to l1, inclusive, the adjuster controls are all powered from only the rear end of the power take-off shaft 111. ln this instance power is transmitted through gears and tti, and a transversely inclined shaft 89 to a control unit 911i which is similar to unit 111 and is controlled by a shift lever 91 to apply power through gears tif to shafts 92 which in turn operate worms @t and worm gears 911i to raise and lower screw shafts 95.

The lift screws 95 operate in hollow vertical standards @it which arenot. however` directly connected with traveller blocks, as in Figs. 1 3, but are outwardly spaced therefrom. One of the standards is rigidlyJ integral, near its lower end, with a transversely extending tubular beam 91, as shown at theright in Fig. 9; while the opposite standard 96 is pivotally secured, as at 98, to the other end of the beam. The lower ends of the lift shafts 95 are pivotally secured, as at 99, to an elongated bracket 99a on the back of the blade 1111 to adjustably support the latter,

l'It

permit slight tilting of the standard 96 which it supports'when one end of the blade is adjustedlower than the other end, in which event one of the pivots 99 will move in a short arc with respectto the other pivot 99. The securing bolts 19 carry the blade 100 and to do so most effectively are preferably slightly tapered and may luie secured against play and vibration by springs -The beam 91 is provided with a longitudinal, upper ange 1112, slidably supported in a pair of guides 103, having integral flangedv arbors 1011, which are rotatably secured, for oscillation on vertical axes, in castings 105. vThe castings |05 are sectionally formed to permit assembly over the flanged arbors` 101 and also that they may be slidably secured upon the frame beams I8. The, members I 05 are adjusted on the frame beams by screw shafts 106, in all respects similar to the previously described screw shafts 86 (Figs. 8 and 9).` These shafts |06 are power driven from a control unit |01 (Fig. '7), having a shiftA lever |08, in the same manner as shafts 86 are operated from vunit 80 in response to manipulations of shift lever 19. In the present instance, however, the unit |01 is not drivenv directly from the power take-off shaft 4I, but receives power from the control unit 90 through an auxiliary shaft |09 having flexible or universaljoints |10.

The blade structure of Figs. 6 9, is shifted transversely of the machine by manual operation of a hand wheel I I I, at the rear end of a shaft |12, also extensible and having suitable universal joints t permit required flexibility of movement. .The fore en d of the shaft I| 2 hasv a worm I I3 meshing with a worm gear |14 of a pinion II5 (Fig. 9), which is journaled in a housing extension 116 of the casting 103. The spur pinion 115 meshes with rack teeth |11 formed in one .edge of the beam fiange 102. Turning the hand Wheel I|1 will rotate the pinion 115 in either direction desired and will accordingly shift ,the blade transversely of the machine'.

In Figs. 10 and 1l, I have illustrated a modied and possibly preferred designof blade lift unit from that shown in Fig. 9. In this discloe sure the blade supporting pin 99 is not attached directly to the lifting screw, but to an inner sleeve 11d which is slidable in an'outer sleeve 119. This outer sleeve is pivotally anchored to the forked end of the beam 91 by stud bolts 12d (Fig. 11). The lifting screw or threaded shaft 121 is journaled at its upper end in a head 122 of the" sleeve 119 and is threaded in the upper end of sleeve 11d so that when turned it will lift and lower the latter. The screw is rotated from shaft 91 through gear means 123.

n the use and operation of the machine as shown in Figs. l. to 5, inclusive, the movement and direction of travel is controlled by the clutch pedal Siti, the gear shift lever 311, and the steering wheel 111, as in the normal tractor; and the desired face angle of the blade with respect to road surface is effected by adjusting the collars t5 in the brackets til. lThe required transverse position of the blade with respect to the frame is secured by turning the hand wheel 11, and this can be done when the machine is in motion as .varying conditions may necessitate.

To secure other blade adjustments the shift lever ,10 is moved to transmit power to the takeoff shaftd1. When the operator now desires to bodily lower the blade he merely presses the shift lever 18 directly forwardly, and pulls it rearwardly to raise the blade. By pressing the travel.

It will now` be seen 'that the operator may, by numerous combinations of acustments, manipulate the blade into'any desired operating position, through engine applied power and under sensitive and accurate control. Furthermore, the operator can conveniently produce the adjust'- ments while in a convenient position for observing the road and operating conditions of the implement, and without interfering with his observation and control of the tractor.

In the modified machine of Figs. '7 to 1l, inclusive, the blade E00 is similarly controlled through the manipulation of shift levers iii4 and |08.

It is understood' that suitable modifications may be made in the structure as disclosed, provided such modifications come within the spirit and scope of the appended claims. Having now therefore fully illustrated and 'described my invention, what I claim to be new and desire to protect by Letters Patent is:

Y1. The combination withthe main frame of a vehicle and an implement disposed thereunder, of a pair of laterally arranged supporting devices slidably associated with the frame for connecting the implement to the frame, and means for selectively or simultaneously adjusting the devices longitudinally of the frame to' adjust the working angle of the implement with respect to the direction of travel, and to bodily adjust the implement longitudinally of the machine.

`2. A traction implement comprising a wheel supported power plant, a power transmission mechanism spaced longitudinally from the power plant and connected therewith to receive power therefrom, traction means supporting said mechanism, a frame rigidly connecting the power plant and transmission mechanism, and including laterally extending side beams, an implement supported under the intermediate portion of the frame for working engagement with the ground as the machine moves forwardly, devices depending from the side beams to carry the implement and for maintaining the same against ground resistance when the machine is being operated, and manually controlled devices, power driven from said transmission mechanism, for adjusting the operative position of the implement.

3. A traction implement comprising a wheel supported power plant, a power transmission mechanism spaced longitudinally from the power plant and connected therewith to receive power therefrom, traction means supporting and driven by said mechanism, a frame rigidly connecting the power plant and transmission mechanism, and including laterally extending side beams, an implement supported under the intermediate portion of the frame for working engagement with the ground as the machine moves forwardly, de-

vices depending from the side beamsto carry the implement and for maintaining the same against ground resistance when the machine is being op- -erated, and manually controlled means receiving power from the transmission mechanism for adjusting the said devices to adjust the operative position of the implement.

4. A traction implement comprising a wheel supported power plant, a power transmission mechanism spaced longitudinally from the power plant and connected therewith to receive power therefrom, traction means supporting said mechanism and driven thereby, a frame rigidly connecting the power plant and transmission mechanism, and including laterally extending side beams, an implement supported under the intermediate portion of the frame for working engagement with the ground as the machine moves forwardly, devices depending from the side beams to carry the implement and for maintaining the same against ground resistance when the machine is being operated, and manually controlled means receiving power from the transmission mechanism for adjusting the said devices longitudinally of the` side beams to adjust the posias the machine moves forwardly, devices depending from the side beams to carry the implement and for maintaining the same against ground resistance when the machine is being operated. means'for adjusting said devices longitudinally of the beams, and manually controlled means, connected to receive power from the transmission mechanism, for actuating said devices to vertically and angularly adjust the implement.

6, A traction implement comprising a wheel supported power plant, a power transmission mechanism spaced longitudinally from the power plant and connected therewith to receive power therefrom, traction means supporting said'mechanism, a frame rigidly connecting the power plant and transmission mechanism, and includi'ng laterally extending side beams, an implement supported under the intermediate portion of the frame for working engagement with the ground as the machine moves forwardly devices depending from the side beams to carry the implement and for maintaining the same against ground resistance when the machine is being operated, means for adjusting said devices longitudinally of the beams, and manually controlled means. connected to receive power from the transmission mechanism, for actuating said devices to vertically and angularly adjust the implement, said last mentioned means including extensible shafts permitting said longitudinal movements of the devices on the beams.v

7. A mechanism for adjusting the operative position of an implement carried by a traveling machine frame, comprising a continuously rotatable power driven shaft, a pair of manually operative control members each mounted for selective movement in a plurality of directions, means operative upon adjustments of one of the control members for establishing power connections with the shaft to adjust the position of the implement in certain directions, and means op- Il yaccesar erative upon adjustments of the other control member 'for establishing power connections with the shaft to adjust the position fthe implement in certain other directions.

A mechanism for adjusting` the operative position of an implement carried by a traveling machine frame, comprising a continuously rotatable` power driven shaft, a pair of 4manually operative control members each mounted for selective movement in a plurality of directions, means operative upon adjustments of one of the control members foi' establishing power connections with the shaft to adjust the position of the implement vertically and angularly with respect to the ground surface, and means operative upon adjustments of the other control member for establishing power connections withthe shaft to' adjust theposition ofthe implement longitudinallyand angularly with respect to themedian -line of the machine.

10. A mechanism for adjustingzthe operative position of an implement carriedby a traveling plement vertically, angularly in a. transverse/"- plane, longitudinally of the machine, 'and angularly with respect to the direction of travel.

Il. n mechanism for adjusting-the operativel position of. an implement carried by a traveling machine frame, comprising a continuously rotat- Elli "ill

able power driven shaft, a pair of manually operative control members each mounted. for selective movement in a plurality ci directions, means operative upon adjustments of said control membera for establishing power connections with the shaft to adjust the position oi' the implement vertically, angularly in a transverse plane, longitudinally of the machine, and angular-ly with respect tothe direction of travel, and means for adjusting the blade transversely with respect to the direction of travel.

l2. 'In a road machine, the combination cornprising a frame, a road working implement disposed transversely under the frame, a pair of laterally arranged devices supportably connecting the implementtothe frame and each including a pair of screw members adapted upon being operated to raise and lower one side of the implementand to thereby adjust its working angle with respect to the road surface, and means for adjusting the devices lengthwise ,of the frame, said screw members of each device including a rotatable nut secured at a fixed elevation with respect to the frame, and a threaded bar engaged posed under the frame, a pair of blocks secured one to each side of the frame and being adjustable longitudinally of the-frame, lift nuts rotatably supported by the blocks, threaded bars operating in said nuts and secured at their lower ends to the implement, and means for selectively turning the nuts to raise and lower the bars.

lll. In a road machinathecombination comprising a frame, a road Working implement disposed under the frame, a pair of blocks secured one to each side of the frame and being adjustable longitudinally. of the frame, lift nuts rotatably supported by the blocks, threaded bars operating in said nuts and secured at their lower ends to the implement, and extensible means for operating the lift nuts while permitting said block adjustments longitudinally of the frame.

15. In a road machine the combination with a supporting frame, of. a pair of blocks mounted on the frame for adjustment longitudinally thereof, upper and lower telescoped members carried by the blocks for supporting an implement under the frame, and screw means for relatively adjusting l the telescoped members of each block.

16. In a road machine the combination with a supporting frame, of a pair of blocks mounted on the frame for adjustment longitudinally thereof, upper `and lower telescoped members carried by the blocks for supporting an. implement under the frame, and screw means for relatively adjusting the telescoped members of each block, one

of said telescoped members comprising a threaded bar and the other of said members being of tubular form to inclose and protect the bar threads.

17. In a. road machine having a. supporting frame including side beams, an implement disposed transversely under the frame, a. pair of support blocks mounted one on each side beam and for longitudinal adjustment with respectthereto, vertically adjustable telescopic hangers supporting the implement from said support blocks, screw means for adjusting at least one of the support .blocks on the frame to thereby adjust the working angle of the implement with respect to the direction of travel, and screw means to actuate the telescopic hangers tothereby adjust the implement vertically and angularly with respect to the road surface. i

18. In a road machine' having a supporting frame including side beams, an implement disposed transversely under the frame, a pair of support blocks mounted one on each side beam and for longitudinal adjustment with respect thereto, vertically adjustable telescopic hangers supporting the implement fromsaid support blocks, screw means for adjusting the blocks on the beams and the telescopic hangers with rea grading tool disposed transversely thereunder; v

a pair of laterally disposed support members secured to the frame, telescopic hangers depending from said support members and connected at their lower ends to the grading tool, and pivoted connections between the tool and said hangers permitting angular movement oi the tool with respect to the frame in a transverse plane thereunder when said telescopic hangers are relatively adjusted.

20. In a road grader having a main frame and a grading tool disposed transversely thereunder;

' a pair of laterally disposed support members secured to the frame, telescopic hangers depending -from said support members and connected at connections between the tool and said hangers permitting angular movement of the tool with respect to the frame in a transverse plane thereunder when said telescopic hangers are relatively adjusted, said hangers constituting the sole supports for the tool from the frame in counter-A acting the road resistance to the tool when the latter is in operation.

21. In a road machine, a frame, an implement disposed transversely under the frame, a pair of blocks secured laterallyl to the frame and adjustable longitudinally thereof, and vertically adjustable means connecting the implement to the blocks and for vertically and angularly supporting the implement.

22. In a road machine, a frame, an implement disposed transversely under the frame, a pair of telescopic hangers carried by the frame, pivot means connecting the lower ends of the hangers to the implement, and permitting angular movements of the implement, in a plane transversely of the machine, when one or both of said hangers is telescopically adjusted. and means for adjusting the hangers longitudinally with respect to the frame.

23. In aroad machine, a frame, an implement disposed transversely under the frame, a pair oi.' telescopic hangers carried by the frame, pivot means connecting the lower ends of the hangers to the implement, and permitting angular movements of the implement, in a plane transversely of the machine, when one or both of said hangers is telescopically adjusted, means for adjusting the hangers to change the angle ci the implement with respect to the direction of travel, and means for adjusting the implement transversely ci the frame.

24. In a road machine', a frame, an implement disposed transversely under the frame, a pair of hangers supported at opposite sides of the frame and connected at their lower ends to the implement, means for vertically adjusting the hangers to vertically and angularly adjust the implement, means for adjusting the implement transversely with respect to the lower ends of the hangers, and means for adjusting the hangers to vary the Working angle of the implement with respect to the direction of travel.

25. In a road machine, a frame, an implement disposed transversely under the frame, a pair of hangers supported at opposite sides of the rameI and connected at their lower ends to the implement, means for vertically adjusting the hangers to vertically and angularly adjust the implement, means for adjusting the implement transversely withrespect to the lower ends of the hangers, and means for adjusting the hangers longitudinally of the frame to thereby shift the entire implement forwardly and rearwardly of the machine.

26. In a road machine, a wheel supported frame having laterally disposed beams, a road working Wnsme, blade supporting devices attached to said their lower ends to the grading tool, and pivotal frame beams and adjustable longitudinally of thel respect to the road surface, and means for adjusting the blade in the direction of its length transversely under the frame.

28. In a road machine, a wheel supported frame having laterally disposed beams, a road working blade extending transversely of and under.k the frame, devices connecting the blade to said beams and constituting the sole support for the blade in resisting the road action thereagainst, said devices being adjustable to vertically and angularly adjust the cutting edge of the blade with respect to the road surface, and being horizontally adjustable to move the blade longitudinally or angularly with respect to the frame', and means attaching the blade to the support devices permitting adjustment of the blade on an axis extending lengthwise of the blade, an operators station, and controls extending within reach of an operator at said station for eiecting all of said adjustments.

29. The combination With a traveling machine frame and an implement disposed thereunder, of a device for adjustably securing the implement under the frame comprising a cross beam extending transversely under the frame and secured thereto by means permitting adjustment of the beam about a vertical axis, and devices connecting the ends of the beam' to the implement and for vertically and angularly adjusting the latter, one of said devices being swingably attached to the beam for movement in the vertical longitudinal plane thereof to permit angular adjustment of the implement with respect to the. beam.

30. In a grader, a frame, a beam extending transversely under the frameand secured thereto for adjustment in a generally horizontal plane lengthwise of the frame, vertically adjustable screw lift units at the ends of the beam, a grading blade carried by said units, and means for adjusting the units to angularly and vertically adjust the blade in a plane parallel with the vertical, longitudinal plane of the beam.

31. In a grader, a frame, a beam extending transverselyunder the frame and secured thereto for adjustment about a vertical axis, vertically adjustable extensible devices supported at opposite ends of the beam, a cutting blade disposed in substantial parallelism with the beam and pivotally ysecured to the lower ends of said extensible devices for angular adjustment transversely of the frame, and in a vertical plane parallel with the longitudinal vertical plane of the beam.

32. In a grader, a frame, a beam extending transversely under the frame and secured thereto for adjustment about a vertical axis, vertically adjustable extensible devices supported at opposite ends of the beam', a cutting blade disposed in substantial parallelism with the beam and pivotally secured to the lower ends of said extensible devices for angular adjustment transversely of the frame, and means for ,adjusting the beam longitudinally of itself and transversely of thev frame.

33. In a grader. a frame, a beam extending transversely under the frame and secured thereto for adjustment about a vertical axis, vertically adjustable extensible devices supported at opposite ends of the beam, a cutting blade disposed in substantial parallelism with the beam and pvotally secured to the lower ends of said extensible devices for angular adjustment in the Vertical longitudinal 'plane of the blade, and means for adjustably shifting the said beam, devices, and blade as a unit forwardly and rearwardly of the frame.

34. In a road machine having lateral frame beams, primary support members slidably mounted on the respective beams, secondary support members pivotally secured to the primary support members for adjustment about vertical axes, a tool beam carried by the secondary support members and slidable transversely therein, and means for selectively or simultaneously adjusting the primary support members longitudinally on the frame beams to angularly adjust the tool beam, or to shift it bodily with respect to the frame beams and thereby adjust the center of gravity of the machine.

35. In a road machine, a frame, a tool sup-` port beam secured transversely to the frame, vertically disposed tubular housings carried one at each end of the beam and projecting substantially thereabove, threaded bars disposed in and projecting downwardly from the housings, threaded means engaging the bars to raise and lower the same, an implement attached 'to the bars, and means for adjusting said tool support beam longitudinally of itself to thereby adjust the implement transversely of the frame.

36. In a road machine, a frame, a beam carried by the frame in a generally transverse position but adjustable about a vertical axis, screw lift devices secured at the outer ends of the beam, one relatively rigid and the other tiltable with respect to the beam and in the vertical 1ongitudinal plane thereof, and an implement carried by said devices and for adjustment thereby angularly and vertically with respect to the road surface.

37. In a road machine, a frame, 'a beam carried by the frame in a generally transverse position but adjustable about a vertical axis, vertically adjustable devices secured at the outer ends of the beam, one relatively rigid and the other tiltable about an axis transverse with respect to the beam, and an implement carried by said devicesand for adjustment thereby angularly with respect to the,lengvth of the beam and vertically with respect to the road surface.

ADOLPH RONNING.

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