US1086554A - Road-grading machine. - Google Patents

Description

J. H; & R. G. OSTEN. ROAD GRADING MACHINE.

APPLICATION FILED AUG. 22,1912.

Witnesses (ma/w Patented Feb. 10, 1914.

a SHEBT$-SKBET 1.

I IIIIIII IU J. H. & R. G. OSTEN.

ROAD GRADING MACHINE.

APPLICATION FILED AUG. 22, 1912.

3 SHEETS-SEBET 3.

5 w 1 3 q I JEfiJZfl/ W Witnesses j a inventors,

n Attorneys,

quickly.

' JAMES H. osrnn AND ROBERT G. os'rnn, or PLANO, ILLINOIS.

iKendall, State of Illinois, have invented a new and useful Road-Grading Machine, of which the following is aspecification.

This invention relates to road grading machines, one of its objects being to pro vide -a machine of this character so constructed as to prevent dirt from piling up in front of the scraping blade and interfering with the operation of the machine, it having been found that this objectionable result ,often occurs in connection with road graders such as heretoforeconstructed and particularly where sod is gathered up-by the scraper. I

A further object is to provide an improved connection between the scraping blade and the wheel supported structure whereby said blade can be readily shifted angularly with out lost motion and without causing any of -the parts to bind to an undesirable extent,

A further object isto provide improved means for adjusting the blade angular-1y and to provide additional means for holding the subsequent to the adjustment of the blade,

A further object is to provide novel means for shifting the beam laterally relative to the rear supporting wheels.

Another object, is to provide improved means for raising and lowering the blade Tith the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and. in the details of constructio 1; hereinafter de scribed and claimed, it being understood that changes in 'theprecise embodiment of the invention herein disclosed, c'anbe made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawing the perfer-red form of the invention has been show-n.

In said drawings Figure '1 is'a plan 'VlGW of themachine. Fig. 2 is'a side elevation thereof. Fig.3 is a vertical. longitudinal section through a portion of the machine.

' Fig. 4c is a perspective view of the draw .bar.

: Fig. 5 is a detail view of the guide bracket used in connection with the half circle. Fig. 6 is an enlarged vertical longitudinal section through a portion of the steeringmec'ha-g Specification of Letters Patent.

' ROAD-GRADING MACHINE.

nism. Fig. 7 is an enlarged View partly in section and partly in elevation showing the means for ad ustably connectingone of the gage plates or runners to the scraper blade.

Referring to the figures bycharacters of. reference 1 designates the main beam of the machine, the same being channeled longitudinally and provided, between its ends, with an arched portion 2, there being oppositely disposed socket members 3 secured to the bottom face of the beam 1 at the rear end ofthe arch 2, these socket members he ing detachablyconnected by-bolts, as shown. A tubular hanger 4; extends downwardly froin the front portion of the beam 1 and a vertical shaft 5 is mounted for rotationtherein. The hanger 1 is connected to the beam 1 by means of an arm 6 extending 'rearwardly therefrom as shown and a recess 7 15 formed in the upper end of the hanger 1. I Secured to the shafts. and extending loosely'into the recess 7 is a forwardly extending draft plate 8 and another plate 9 is secured to the upper end of the shaft 5 and above the sides of the beam 1, said upper plate 9 being spaced from'the bottom of the beam 1 by a spacing sleeve 10 mounted On the shaft5. The front ends of the two plates 8 and 9 are connected by a bolt and an car 12 extends upwardly from the top plate 9 and is adapted to be tion of an axle 18 supported at its ends by front wheels 19. A spacing sleeve 20 is mounted on the shaft 5 between hanger l 7 Patented rep. 1d, 1914-. Application filed August 22,1912. Serial No. 716,556.

and yoke 14. ,From the foregoing description it will be apparent that the front axle 18 is free to swing about the trunnions 16 as an axis and, at the same time, the entire axle can be turned about the-axis of the shaft 5, motion-being transmitted to said shaft from the draft tongue 13 and the plates 8 and 9 which are fixedly connected .to the shaft. By providing a front axle which is free to oscillate in the manner described, it is capable of passing more readily over an uneven surface and without danger of cansing the machine to tilt laterally. F urthermore, by mounting the front wheels in the manner described, a very short turn canbe made inasmuch as the wheels can pass freely under the-front portion of the beam '1.

As shown in the drawings the sides of the channeled beam 1 are formed with openings 21. The socket members 3 receive-between them a ball 22 formed at the upper endof a stem 23, this stem being connected to the center of the back face of an elongated scraper blade 24. The front face of this blade is curved. downwardly and forwardly to a straight active edge. A. half-circle brace 25, preferably formed of an angle strip is secured to the back face of the scraper blade, the ends of saidbrace being downturned, as at 26 and each .of said ends forming one wall of a socket 27 The other walls of these sockets are formed by an angular bracket 28 suitably secured to the back face of the scraper blade24. A wear strip 29 is secured to the scraper blade 24 andextends along the rear face thereof into the socket 27, said strip 29 being curved so as to constitute an abutment forthe purpose hereinafter set forth. Y

A curveddraw bar 30 constitutes a connection between the front portion of the beam 1 and either end portion of the Scraper blade 24. This draw bar, as shown particu- 1 larly in Fig. 4,'has an eye 31 atits rear end while its other end is provided with oppositely extending curved stems 32, each stem ;extending"' laterally and thence upwardly relative to the bar. If the blade 24 is inclined forwardly with its leftend in advance ofits right end, the draw bar 30 is to be placed at-the left side of the beam 1 and the right hand stem32 of the bar 30 is insorted into one of the openings 21. The

rear end portion of thedraw bar is then in-- serted into: the socket 27 adjacent the left end of the blade 24 after which a set screw 33, which is carried by the eye.'31,is screwed f against the curved wearplate 29 so asgto I bind tightly thereagainst.

" movement. It will be'apparent, of course,

With the parts thus fitting snugly together it will be seen that the front end of the scraper blade 24- will be'securely -braced against rearward that when the right end of'the blade 24 is in advance of the left end the'reof, the draw bar 30 can be placed at the right side of the beam-1 and the other stem 32 insertedinto the beam while the rearcefid of the .draw bar 30 is inserted into the-socket 27 adjacent the right end of the blade 24.

Both ends of the b1 de 24 are provided, on

theirrear faces, with guide brackets 34.

Each of these brackets 34 has a stem 35 mounted to slide and rotate therein, the said stem projecting upwardly from a gage plate;

or runner 36,- A yoke 37 straddlesthe upper end of the stem 35 and is slotted,as at- 38,the said slots receiving trunnions 39 ex- .tending radially from the stem 35. A toothed arm'4O is'formed integral with the that by loosening cam 42, the toothed arm 40 can be shifted out of engagement with the teeth 43- and the stem 35 can thus be adjusted longitudinally within the bracket 34.

After such adjustment the arm 40 can be swung into engagement with the teeth 43 and the cam tightenedand then held by means -of the ring- 44. As the stem is mounted for rotation and as 1t has trunnlons 39 projecting into slots 38 in yoke 37, it

will be seen that the stem is capable of rotating freely althoughheld against longitudinalmovement. This rotation is necessary in order that the gage plate or runner 36 may be held ,parallel with the path of movement of the machine.

Arranged'at each side of the beam l are frame members 45, these frame members being pivotally connected, attheir front ends, to the beaml, as by means of a bolt 46. Thisbolt is preferablylocated adjacent the front endof the arched portion of the beam 1 and the rear ortions of theframe members 45 are pre erably .curved downwardly, as shown at 47 and provided, at their lower wardly projecting extensions 49. A bar 50 ends, with angular sleeves 48 having rearconnects the rear portions of the framemembers 45 so as tojprevent them from spreading apart. These frame members also support, between them, an elongated U-shaped guide 51 into which the rear end of the beam 1 projects, said beambeing adapted to slide .vertically within the uideL' Suitable braces connect the guide to t e frame members-45,

certain of these braces being indicated at 52.

Secured to the bottom face of the beam ,1

and close to the guide 51 is a bracket 53 having a forwardly extending tongue 54 adapted; to project under the half circle 25. The

upper face-of this tongue is beveled up to a longitudinal ridge 55 constituting a bearing for the lower surface of the half cir-.

role or arcuate b'race'25. Thus it will be seen that said ridge constitutes a bearing for thev half circle and on which the same is .free to tilt. An opening 56 is formed in the tongue and registers with a corresponding opening 57 in the beam 1 and, the half circle is provide'd-with a series of'openings 58 any one of which is ada ted to register with the openings. 56 and 5 so as to'receive, a locking pin 59fsucl1 as shown in Fig. 3.

A'bar 60extends transversely of and is secured to the frame members 45 and mountother arm,"indicated at 62, is connected, bya

depending link 63,.to the rear portion, of the T beam '1. This sarin thus serves to ieldingly support the rear end of the beam andto facilitate-the elevation thereof relative to the frame members 45. pivotally connected to and extends upwardly "rom the rear portion of the beam 1 and slides within a guide 65 supported within the upper portion of the U-shaped guide 51. A shaft 66 is journaled in the guide 65 and has a gear 67 secured to it and meshingwith the rack bar 64. A wheel 68 rotates with shaft 66 and is adapted to be rotated by hand, whereby gear 67 is revolved and the rack bar 64 is shifted longitudinally so as to either raise or lower the rear end of the beam 1. Shaft 66 isnormally held against rotation bymeans of a brake lever 68 which is pivotally mounted upon one side of the U-shaped guide 51 and has its forward end connected, by a spring 69, to an car 70 outstanding from the lower portion of the U- shaped guide 51.' The rear end of the brake lever 68 is connected by alink 71 to a foot lever 72, said lever being fulcrumed on a bracket 73 upstanding from a platfornr74. Said platform is fixedly connected to and extends rearwardly from the frame members 45 and has a standard 75 mounted thereon for carrying the seat 76 to be occupied by the operator. A brake shoe 77 is carried by the brake lever 68 and normally engages the periphery of wheel 68. The frictional engagement of the shoe with this wheel will of course hold shaft 66 and gear 67 against ro tation until the brake lever 68 is shifted away from wheel 68 by means of the foot lever 72.

Brackets or bearings 78 are arranged on the frame members 45 and a shaft 79 is journaled therein and is provided at 'each end with a crank arm 80. A worm wheel 81 is secured to this shaft and isen'gaged by a worm 82 formed on or-secured'to a rearivardly and upwardly extending-controlling shaft 83, said shaft being journaled in one of the brackets or bearings 78. A hand wheel 84' is arranged at therear end of shaft 83 and by means thereof the said shaft and the worm 82 can be rotated readily and the shaft 79 caused to revolve so as toraise or lower the arm 80.

Pivotally connected to the front ends of the arms 80 are hangers 85 each of which has a depending finger 86at its lower end. This finger is adapted to be inserted into 'the opening 58 thereunder and a hookedreta-ining dog 87 is pivotally connected to each hanger and is adapted, when the finger 86 is seated in one ofthe openings 58,,t0 extend A rack bar. 64 is with the half circle. end portion of the half circle engaged by und the half circle 25 and thusprevent it from withdrawing from the finger 86. A holding ring 88 is slidably mounted on each hanger 85 and is lapted to engage dog 87 so as to hold it against movement "relative to finger 8G and thus securely attach the hanger 85 to the-half circle 25. It is tobe understood that only one of the hangers 85 is placed in engagement with the half circle at one time. If the right end of the scraper blade 24 is back ofthe left end thereof,

the hanger 85 at the right side of the machine is placed in engagement with the half circle. Should the left end of the scraper blade be rearmost, the hanger 85 at the left side of the machine is placed'iu engagement In either event that the hanger will be elevated when the crank arms 80 are moved upwardly. Thus it will be seen that the rearmost end of the scraper blade 24 can be easily raised so as to tilt the blade longitudinally? n Slidably mounted in the sleeve 48 is the angular rear'aXle' 89 of the machine, the ends of the axle' being supported by flanged supporting wheels.90. Axle 89 has rack teeth thereon, as shown at 91 and certain of these teeth are constantly engaged by a gear 92 secured to an upstanding shaft 93 which is journaled in the extension 49 of one of the sleeves 48. A gear 94 is secured to and rotates with the upper portion of shaft 93 and the upper end of said shaft is journaled in a bracket 95 extending from the bottom of the platform 74. A lever 96 k is mounted to rotate freely on the shaft 93 and has a lug .or tooth 97 adjacent one end and adapted to engage the gear 94. A.

spring 98 is mounted on the shaft 93 and bears upwardly against lever 96 so as'to hold said lever normally in engagement with the gear 94. A handle 99 is provided at the free end of the lever and a bracket lOO is connected to the lower surface of the platform 74 and servesto hold lever 96 against movement under normal conditions.

transversely of the machine so as to bring the frame members 45 toany desired position above the axle 89. By swinging lever 96 downwardly. against the action of the sprin 98, the tooth or lug 97 can be disengage from gear 94, and said lever thus swung back to its initial position without producing a corresponding movement of the shaft 93. An arch 101 can be mounted on the'frame members 45 close to the arched portion 2 of thebeam and this arch 101 connected. Thus the blade can be caused. to

grade an inclined surface. F or the purpose of adjusting the blade angularly in a horizontal plane, the pin 59 is disengaged from the half circle and the draw bar is disengaged from the beam 1. -The blade 24 can then be swung about the ball 22 as a pivot until it has been brought to a desired angle after which pin 59 is reinsertedinto the half circle and the bar 30 is readjusted a bracket secured to and arranged under the beam, said bracket having a tongue provided into-engagement with beam 1 and with'the socket 27 adjacent the front end of the scraping blade.

The entire blade can be quickly elevated by means, of the rack bar 64; and gear 67, as hereinbefore described,

-As the beam l'is arched directly in front of the scraper blade, it will be seen that there is no danger of dirt and sod becoming lodged under the beam and interfering with" the proper operation of the'scraper.

V Vhat is claimed is "side thereof, a scraper bladeextending un- 'der the beam, said blade being movably con nected to 'the beam, a draw bar, stems extending laterally from one end thereof, one stem being provided-for, and adapted to she either end.

2.. A road scraper including a longitudi nally' ohanneled beam having a series of aperturelsin each side thereof, a scraping blade "extending under and movably connected'to the beam, said blade being shiftable angularly in a horizontal plane, a drawbar, op-.'

' 'positely extending stems at one end of the bar" one stem being provided for, -'and- I insertible into an opening of eachseries, said bar being curved. downwardly and rearwardly so as to 'extend over thegblade and noeans upon the .back face oflthe blade and adjacent ,each end, eitherof said means being'adapt'ed tobe engaged by the draw bar.-

1 3. In a road'scraper'the combination with 1 a longitudinally channeled beam having "a a scraper lade extending under, and movably, connected toth'ebesim, a'dra'w bar having oppositely"extending-stems,at one end one stem being .provide'd for, and insertible I into any, one of the' openings'in each series,

1; A road scraper including-a beam, said, beam having a-series of apertures along each said bar being extended rearwardly and downwardly to engage the rear face of. the

scraper blade, and means carried by the bar for engaging said blade.

ate brace upon therear face of the blade and slidably mounted on the ridge, and means extending through'the ridge for holding said --arcuate 'brace against longitudinal movementupon the ridge. 1

roadfscraper including a beam, a' scraper blade extending thereunder and'ad I justable angularly in a. horizontal plane and also adjustable 'angularly in a vertical plane,

with'a longitudinal ridge, an arcuate brace secured to the blade and mounted'to slide and rock upon theridge, and means extending through the tongue, beam and brace for holding said brace against movement longitudinally.

6. A road scraper including a 'bea1n,' ascraper blade connectedthereto for universal movement, frame members pivotally connected to the beam and extending rear wardly therefrom, .a wheel supported axle carrying the rear ends ofsaid members, a shaft mounted for rotation on the frame members, crank arms extending therefrom,

means, for rotating the shaft, hangers dependlng from the crank arms, an, arcuate brace 'upon'the scraper, and means for detachably securingthe hangers to the brace..-

' 7, In a road-scraper the combination with a beam and means for supporting the front end thereof, of a wheel supported rear axle, frameinembers extending from the axle and along the sides of the beam, said members being pivotally connected 'to the beam adja-' "cent the front endthereof, a guide interposed between and fixedly connectedt'o the frame members, me a1is carried-bythe frame members for yieldingly supporting the rear end o-f'the beam in the guide, ascraper blade connected tothe beam,- and means for adjustingtlie rear end of the beam vertically withinthe guide to raise and lower the v j! I I I 115 In testimony that we' claim the foregoing blade.

as our'own, we have hereto affixed our sig II I I I I I :natures-inthe presence of two witnesses. series Qfja ,ertures in. each side'thereof, of I JAMESHQOSTEN.

I I ROBERT Gr. Witnesses? BERT LAMKIN, I

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