US1655303A

US1655303A - Leaning-wheel grader

Info

Publication number: US1655303A
Application number: US189043A
Authority: US
Inventors: Franklin E Arndt
Original assignee: Galion Iron Works & Manufacturing Co
Current assignee: Galion Iron Works & Manufacturing Co
Priority date: 1927-05-05
Filing date: 1927-05-05
Publication date: 1928-01-03
Anticipated expiration: 1945-01-03

Description

F. E. ARNDT LEANING WHEEL GRADER Jan. 3, 1928.'

3 Sheets-Sheet l INVENTOR. m 17772 $11 Original Filed Oct. 25. 1926 Jan. 3, 1928.

F. E. ARNDT LEANING WHEEL GRADER Original Filed Oct. 25. 192? a Sheets-Sheet 2 n I INVENTOR.

Kl. I777: cli

ATTORN Patented Jan. 3, 1928.

UNITED STATES FRANKLIN n. Artnnr, or canon, OHIO, nssrenon T rm: GALION mon woaxse OHIO.

HEISSUED Substitute for application Serial No, 144,035 fi1ed October 25, 1926. This application filed Kay 5, 1927.

- Serial No. 189,043. a

This invention comprehends and relates to road graders and more especially to road graders of the leaning wheel type, in which the ground or' traveling wheels can be canted ortilted to the left or to the right to prevent side draft and keep the machme effectually in line and up to the work in hand, this present application being a sub stitutefor my abandoned application serial Number 144,035, filed October 25, 1926.

The invention has for its primary object a novel and very eflicient leaning wheel grader in which the main framework of the machine is so constructed that it'can be swung in the arc of a circle to the right or to the left as may be necessary, according to the conditions met with, and in which the load or weight of the framework upon' the rear axle will always be evenly balanced or distributed and both rear wheels will have the same tractive effect or action, in contradistinction to that type of. grader in which the framework is shifted transversely on the rear axle.

With this and other objects in view, as will more fully appear as the description proceeds, reference is had to the accompany-.

ing drawings, wherein Figure 1 is a side elevation of a constructed 'in accordance with my mven tion, w

Fig. 2 is a top plan view thereof;

Fig. 3 is a rear elevation;

Fig. 4 is a front elevation;

Fig. 5 is anenlarged top plan view of the 'rear axle and a portion of the main frame;

Fi 6 is a rear elevation of the machine,

showing the frame and axle relatively shifted; p v v I Fig. 7 is a fragmentary section through the arcuate guide a Figs. 8, 9, and 10 are diagrammatic plan views; and f Fig. 11 is a fragmentary top plan .view showmg thepreferred manner of mounting the screw 46 upon the main frame;

Referring to these drawings 10 designates the. longitudinall beams or channel the main frame of the .machine.

irons wh1ch constitute tatably mounted in any suitable manner upon a bolster 11 which extends downwardly.

grader I ing rearward to the extending supportingv Thesechannel irons-at their forward ends are roto the front axle 12. This front axle is formed of two angle irons and disposed between these angle irons are the knuckles 13, the stubs of which support the forward wheels 14. The. upwardly extending arms of the wheel supporting knuckles 13 are connected by means of two transversely extending angle irons-15. Both of these angle irons support; upon them arcuate racks 16 ,on a shaft 28 which extends out through the housing and is operatively connected to the flexible-actuating shaft 29, which extends rearward to the operators platform 30 where it is connected to suitable operating means, aswill be later described.

Pivoted to the forward ends of the arched eye beams -10 are the drawbars 31 which extend rearward and downward and carry the usual circle. Engaged with. this circle for rotative movement are the scraper or blade supportin beams 32 which at their rear ends exten downward and then forward and pivotally support the scraper 33. i

The scraper and its'supportin means are such that the scraper may be tilted ormay berotated or otherwise adjusted. I do not 7 wish to be limited to an particular means as this forms no part 0 my invention, an

Operatively connected to the front axle is the tongue 34 which is swingable laterall by means of the flexible shaft 35 exten olperators platform. Swingable tongues of t is nature are well known and form no part of m invention, and, therefore, require no furt er description.

Thfezrear axle. is formed by two transversely extending angle irons 36 andthis rear axle, while it supports the rear ends of the beams 10, is swingably connected to I may be'adjusted into vertical position by means later to be described.

The rear axle is connected to the frame beams 10 by means of link beams 40 which are formed of channel iron. Each of these beams at its forward end is pivotally mounted against a spacing block 41, through which a bolt 42 passes, and which may engage the corresponding beam 10. This block 41 and the pivot bolt 42'are disposed at the point where the corresponding eye beam extends downward and then rearward and about two feet in advance of the rear ends of the beams 10.

Attached to the under face of the rear end of each beam 10 is an angular lip 43 and each of the swinging beams 40 or links has mounted upon it a member 44 formed with an arcuate, transversely extending channel 45, whichengages the angular lip 43 and prevents any downward movement of the link beam 40 with reference to the rear end of the main beam 10, but allows the swinging beam 40 to swing into an angular relation to the corresponding beam 10 without becoming disengaged from the beam 10.

Operatively mounted upon one of the beams 10 is a transversely extending screwthreaded shaft 46 carrying a nut 47. This screw threaded shaft also carries a beveled gear wheel 48, and mounted in a suitable bracket upon the end of the main frame formed by the beams 10, is a vertical operating shaft 49 which, at its lower end, carries a beveled gear wheel 50 engaging the beveled gear wheel 48. This operating shaft extends up adjacent the rear end of the operators platform 30 and at its upper end carries the operating handle 51. The nut 47 is connected by a link 52 to one of the swinging beams 40, this'link being pivoted to this swinging beam, and as these beams 40 are each pivotally connected to the rear axle, it

follows that as the--nut 47 is shifted in one direction or the other, both of the swinging beams 40 will be swung in one direction or the other and the frame will be moved to the right or to the left in the arc of a circle. Thus the main frame may be held with its middle in coincidence with the draft line of the machineor with the swinging beams 40 disposed in angular relation to the beams 10, thus swinging or angling the main frame to any desired position within the range of the machine to'the right or left.

For the purpose of canting or leaning the rear wheels, I mount upon the connecting aeeaaoa bars 39 the arcuate racks 52', and mount upon the rear axle the housing 53, wherein 1s disposed a worm wheel 54 and the shaft of which-carries pinions 55 which engage the racks. A vertical shaft 56 extends down through a lateral extension of the housing 53 and has upon it a worm 57 which en- 7, than when the connecting rod is shifted in one direction or the other to lean the wheels.

This arcuate rack 52 and the arcuate rack 16 compensate for this approach or recession of the connecting rod or rods to ,or from the operating pinion therefor.

It will be seen that with this construction the front wheels or the rear wheels, or both,

construction resides in the fact that the main frame-which is composed of the beams 10 a and the continuations thereof constituted by contradistinction to that type or construction 0 n n s of leaning wheel grader 1n which there IS a transversely shiftable rear axle, or in other words, where the frame itself shifts transversely on the rear axle, it being evident that in such last named type or construction of machine, when the frame is shifted over to the right or to the left, the entire weight of the machine is thrown practically upon that end of the axle towards which the frame 65 ,wheels carried upon the rear axle,'and manuis shifted, leaving the opposite wheel substantially without balance or tractive effect.

will, of course, be understood that in the foregoing description and accompanying drawings, all disclosures as to the mechanism for raising, lowering, tilting, or otherwise adjusting the blade, is purposely omitted and -of the main frame.

that in actual practice this machine will be provided with manually controlled means for this purpose so that the scraper blade may be raised or lowered, shifted laterally in either direction, angled to any desired dc gree .with relation to the line of draft, and tilted to any extent required.

While I do not wish to be limited to this, I preferably connect the two beams of the main frame at their rear ends by a cross bar 58 to which is bolted a guide bar 59 upon which the nut 47 slides, this guide bar 59 carrying the brackets which support the ends of worm 46 and the vertical-shaft 49. g It is necessary that the nut 47 be slidingly enaged with a guide bar 59 so as to prevent the nut from turning and eliminate any strain upon the pin connection of the nut and the link '52;

It will be obvious that theidetails of construction as illustrated might be modified in naniy ways'without departlng from the spirit of-t e inventionvas defined in the appended claims.

. I claim:

1. An implement having a main frame formed of flexibly connected sections, a forward axle'having wheels. and to which the main frame is pivotally connected, a rear axle to which the rear sections of the main frameare pivotally connected, and manually operable means for angling the sections 2. An implement having a main frame formed of main sections and rear sections pivotally connected thereto, a forward axle to which the main frame is pivoted, a rear.

axle carried by the rear sections of the main frame, and manually operable means for angling the main frame.

3. An implement having a main fram formed of main sections and rear sections pivotally connected thereto, a forward axle to which the main frame is pivoted, a rear axle carried by the rear sections of the main frame, and manually operable means for angling the main frame, tiltable wheels carried by the rear axle, and manually operable means for tilting the wheels.

4. A grader comprising a main frame including two longitudinally extending frame beams, two longitudinally extending link bars pivotally connected to the frame beams and swingable laterally in either direction, a rear axle pivoted to the link bars to permit lateral swinging movement of the main frame relative to the rearaxle, tiltable ally operable means onthe'rear axle whereby the wheels may be tilted.

5. A grader comprising a main frame, including two longitudinally extending frame beams, two longitudinally extending. link bars pivoted to the frame beams forward of their rear ends for oscillation laterally in either direction, means on the link bars and beams for slidingly engaging the link bars with the beams in any laterally adjusted position of the link bars, a rear axle pivotally mounted upon the rear ends of the link bars and disposed rearward of the main beams,

' and wheels carried upon said rear axle.

6. A grader comprlsing a main frame ineluding two longitudinally extending frame beams, two longitudinally extending link bars pivoted to the frame beams forward of their rear ends for oscillation laterallyin either direction, means on the link bars and beams for slidingly engaging the link bars with the beams in any laterally adjusted position of the link bars, a rear axle pivotally mounted upon the rear ends of the link bars and disposed rearward of the main beams, tiltable wheels mounted upon the ends of the rear axle, and means carried by the rear axle whereby the wheels may be manu- 8. A grader comprising a main frame ineluding two-longitudinally extending frame beams, two longitudinally extending link bars pivotally connected to the rear ends of the frame beams for lateral movement in a horizontal plane and in either direction and extending rearward of the rear ends of the frame beams, each of the frame beams and the corresponding link bar being formed to provide onean arcuate guide and the other having a lip engaging said guide, a rear axle formed of two transversely extending bars spaced from each other and operatively pivoted to the rear ends of the link bars,

knuckles pivotally mounted between said rear axle bars at the extremities thereof, wheels carried by said knuckles, the knuckles being movable in a vertical plane to tilt the wheels, a connecting rod connecting the knuckles for unitary movement, and manually operable means mounted upon the rear axle for tilting said wheels;

9.'A grader comprising a main frame in- 4E eaasoa eluding two longitudinally extending frame transversely shifting the link bars including 10 beams, two link bars pivotally engaged with a screw shaft mounted upon the main frame the frame beams forward of the rear ends at the rear end thereof, an operating shaft thereof 'for swinging movement in a horifor the screw shaft, a nut through which the 5 zontal plane, a rear axle pivotally connected screw shaft passes, and a link operatively to the link bars and transversely movable connecting the nut to one of said link bars. 15 therewith, 'tiltable wheels mounted upon the In testimony whereof I afiix my signature. rear axle, means carried on the rear axle for manually tilting said wheels, and means for FRAJNIN E. ARNDT.