US1813071A - Road scraper - Google Patents

Description

C. J. MORITZ ROAD SCRAPER July 7; 1931.

Filed June '7, 1929 2 Sheets-Sheet 1 fly/49W C hrs J/VOTZ'ZZ y 7, 1931- 4 c. J. MoRlTz 1,813,071

I ROAD SCRAPER Filed June 7, 1929 2 Sheets-Sheet 2 Patented July 7, 1931 CHARLES J. MORITZ, OI EFFINGHAM, ILLINOIS ROAD SCR'APER Application filed June 7, 1829. Serial No. 369,086.

My invention relates to road scrapers and has to do particularly with road shoulder trimming machines.

' The invention represents principally an improvement in the road scraping machine shown in my prior Patent No. 1,672,497. The principal object of my present inven tion is to enlarge the scope and utility of my prior machine without in any way inter fering with its simplicity and intended means of operation.

Another object isthe provision of a ma- .chine of this character in which the road scraping blade or mold board is capable of more flexible manipulation.

Another object is the provision of a grading machine particularly adapted for cutting la shoulder at the side of a finished road below the surface thereof or in line with the in surface thereof as may be required. 1

In the machine of my invention the mold board is capable of bodily vertical adjustment, tilting adjustment and angular adj ustment, all without thesacrifice of the basic 2 5 principle of the machine wherein the finished road surface is employed as a guide for the grading operation at the side of the road on the shoulder.

Among the most valuable. functions of the machine at present used is the gradingof a horizontal shoulder or berm at the side of the road and below the same as is done at the present time in the widening of concrete highways. V

Other objects and features of the invention will be apparent from a consideration of the Fig. 4 is a perspective view of a bracket member which is employed as a mounting for the mold board; r

Fig. 5 is a sectional view taken along the line 55 of 2;

F 1g. 6 is a View showing one of the functions peculiar and individual to my present type of scraper, and

Fig. 7 is a modified form of a part of the mold board regulating mechanism.

My scraper makes use of a wheel carriage substantially the same as the prior patent referred to with a side extension therefor and a mold board secured to the side extension and adapted to cut a shoulder or barn) at the side of a road employing the finished road surface as a guide. The mold board is adjustable to make possible the procurement A of any cutting position required in connection with the intended use of the machine.

Referring now to the drawmgs the wheel carriage comprises a mam frame including longitudinal members 10 and 11 formed of channel irons provided with diagonal bracing 12 and 13 carrying rear wheels 14 and 16 supported upon a suitable axle 17 rigidly attached to the frame. steerable wheels 18 and 19 are provided at the front of the car- F riage and are secured on bell cranks 21 and 22 pivoted to a cross axle 23 and having their long arms connected by a suitable tie rod 24. The wheels are steerable through an adjusting chain 26 which is moved by a sprocket 27 controlled by a hand wheel 28, and the chain being trained around a pair of sheaves 2929 attached to a cross piece 31.

The channel members 10 and 11 have reinforcing members 33 and 34 which may also be of channel iron and extend from an intermediate position slightly behind the front Wheels to the rear axle. The channels in these members may be employed for supporting counterweights 36-36 which are secured in position by nuts and bolts 37.

In addition to the portion of the frame previously described, a front cross piece 38 is provided which acts as part of the frame and has another function which will be brought out hereinafter. There are also a pair of cross pieces 39 and 411 which cross pieces are formed of channel iron and extend beyond the frame to act as part of a side extensi'on'from which the mold board is suping downwardly extending arms 62' and hav-' p rt d-- Asa bracket from which the mold'board is supported Iemploya member 42 (Fig. 4)

having a special shape and provided with.

p central portion of the mold board and has a boss 46,extending around the .lower per-h.

tion of the tubular upright and supported thereon by a collar 45 secured by. a pin 47.

;Any other means for obtaining a rigid con- '15 'nection at this point maybe employed v such lar upright has secured thereto a bracket 48, a-pin 49 being employed for the purpose and 'aihand screw '511being threaded in the memher 48 and having its lowerend engaging against a portion-42" of the bracket 42 whereby the tubular upright;48. may be drawn upwardlyor permitted'to fall by gravlty for adjusting the mold board with respect to the scraper frame. This permits the mold board to be adjusted to cutbelow the road surface, as shown in 6, this function being of great "facility when widening concrete highways as is being done now 7 qulte extensively. v 7

While the mold board is supported onthe tubular upright 43 and this member heldby the bracket 42, the cuttingv load is. not borne entirely by the upright 43': and the mum:

3, but is distributed in a manner which will now be set out. This construction which I'am now aboutto describe is in most respects identical with that described-in'my co-pending.application. f Referring nowaigain to the frame the front itransverse member e38 has a side extension 338?. and theentire cross piece in'cludingthe 6 side piece is provided-with a plurality of apertures 5252 for attaching draftbarsj53' I. '45 and 54thereto', the draft barsbeing connected ,by a clevis 56 to which a toe chain orca ble,

- (not shown), is secured for connection} to .a"

v suitable source'ofpowe'r such as a tractor. The arrangement of the draft bars 63 and' 54 5c in this manner permits the line 'of pullJtobe regulated inaccordance with the slope of the mold board'and the operation which is being performed therewith. In any event "the pull" Ladapted tobear against arcuate bearing member 84 carried by the mold board. Itwill .1 be seen that full freedom of operationef the i wing cutter 7 4 is permitted about its pivot by "willlbe outside the'wheels. For connection time the mold board I provide a draftmember 57' which'is connected at 58 to-the front extension 38 the rear end of'the draft member '57 being secur'ed'by bolts 59 to a; bracket 61 r which-encircles the tubular upright 43' just abovefthe bos's46. As will be seen this places 7 the pull directly in the place where it. is needed and relieves the bracket-42 of pulling strain. e

For-adjusting the horizontal pitch ofth Zmold board provide-a circle frame 62 having a semi-circular portion provided" with apertures. 63 through any selected one of which a pin' 64 maybe placed and extended through an aperture provided in the member to movein a rotar'yfashion: to obtain an adjustment with the pin 64 in any one ofthe holes 6'3. In Fig. I the fulllines show the V mold boa-rd'in the position in which itwould be employed for cutting a horizontal road shoulder evenwith the road. Fig. 6 showsthe position which the mold board 'wouldtake' I when cutting 'below t-he' road surface. as welding or the like, The top of the tubu- Now as to the manner of ,securingfthe bracket 42 to the grader frame thismay be done in various ways, but I employ a construction which willlpermit the ,a-n'gulartilt- 67 being extended also through apertures; in the extensionsof the membersBS and41.

eilsosecured in the same fashion. andfwithin '57 and since the' boss 46 is journaled on the tubular upright 43 the mold board is free the bifurcated portions 42 isa channel memiber 68,;a screw 69 being threaded'ina boss on the bracket 42 and having its lower end extending into connection withithe member 1, "68. Ahand piece 71 permits the turning of the screw 69 an-d'the tilting of, thebracket 42 around the bolt 67 as'a pivot andiin order to avoid excessive movement of the bracket in either direction arcuate-slotsIfl'ZQ are pro- I vided in thejbracket 42 and a pin or'bolt 73 also connected across'thetransverse members 39 and 4 lextend into these slots; The brack- .et is accordingly permitted movement withinthe limits of the slot; 3 v I As in' my prior machine I employ a shoul der wing cutter 7 4 pivoted tothe moldboard at 7 G and provided with an arm 77 connected by alink 7 8' tea bell crank79 pivoted around the tubular upright 43 and adapted for operation by ia "chain 81 controlled by abate iwheel 82.] The details of operation of thisv hand wheel will notbe referred to asthey have been pointed out at length the pre. ceding patent. In; order to avoid a. direct 5:

strain on thepivot pin? 6 'I'secure abracing member 83 to the win-g cutterl4iin the form of a T .iron having. an extending end 83 this construction, butbracingfis accomplished suflicient in value to amount to'substantially anintegral construction of these two .me111 fi:.l

bers. i

the road surface as a guide so that-n0 ing means or checking of newly graded or v the road, or the hand lever 71 may be operated to tilt it in either direction. When actually used it is obvious that the strain of drawing the mold board throughthe earth is borne by the draft member 57 and very little or no strain is borne by'the side extension or the side mounting bracket 52. The wing cutter 74 may be adjusted to various angles by turning the hand wheels 82, and this is done whether the grader is in operation or not.

The arm 83 will take the strain off of the pivot 76 permitting easy adjustment of the Wing cutter and avoiding breaking or straining thereof.

In Fig. 7 I show a modified arrangement which will positively prevent the mold board from raising under any circumstances, the weight of the mold board not being depended upon to lower it. In this arrangement I make use of the same general type of casting 1 12, and the tubular upright 143 is slidable therein as in the main view. The member 148 is substantially the same except that the spindle 151 is not threaded therein but is threaded instead into the portion 142 of the bracket 142. Collars 186186 pinned or otherwise suitably secured to the spindle 151 hold it in fixed rotatable position with respect to the bracket 148. For this reason turning the hand wheel connected to the spindle or screw 151 turns this screw with respect to the bracket 142 and results in raising or lowering of the entire assembly carried by the upright 143.

This same general idea is carried out in connection with the adjusting screw 169 this screw having collars 187 secured thereto above and below the boss on the' horizontal portion of the bracket 142. The screw 169 is threaded into a ball 188 which with a bi-part block 189 forms a universal joint connection to the web 1684. Consequently turning the screw 169 in either direction will tilt the bracket 142 and the ball and socket arrangement allows for the changing angle so that no bending action is applied to the adjusting screw.

I have described in detail features of my invention as embodied in a form of a machine which I have employed with satisfaction in actual use, but it is obvious that I do not limit myself to these details, the invention being limited only by the scope of the appended claims.

What I claim as new and desire to protect by United States Letters Patent is:

1. In a road grader a wheeled frame, a side extension thereof a bracket carried by the side extension, a mold board suspended from the bracket and adapted to out a horizontal shoulder entirely beyond the wheel line of the wheeled frame, means operable to obtain bodily vertical adjusting movement of the mold board and means for moving the bracket with respect to the side extension to effect the angular adjustment of the mold board.

2. In a road scraper a wheeled frame adapted to ride on a finished roadway, a bracket having a pivotal connection to the frame at the side thereof, a mold board suspended from said bracket and means for tilting the bracket with respect to the frame to impart an angular adjustment to the mold board.

3. In a road scraper, a wheeled frame adapted to ride on a finished roadway, a lateral extension on said frame, a bracket piv otally secured to the extension and projecting laterally therefrom, a vertical upright slidable in the bracket, a moldboard secured to the upright, adjusting means for controlling the vertical position of the upright in the bracket to adjust the moldboard bodily vertically, and means for adjusting the position of the bracket to impart an angular adjustment to the moldboard.

1. In a road scraper, a. wheeled frame adapted to ride on a finishedroadway, a lateral extension on said frame, a bracket pivotally secured to the extension and projecting laterally theref om, a vertical upright slid; able in the bracket, a moldboard secured to the upright, adjusting means for controlling the vertical position of the upright in the bracket to adjust the moldboard bodily vertically, means for adjusting the position of the bracket to impart an angular'adjustment to the moldboard, a second side extension in the front of the frame, and a draft link between said front extension and upright, whereby the working strain on the adjustable parts of the grader is lessened. I i

5. In a road scraper, a wheeled frame adapted to ride on a finished roadway, a lateral extension on said frame, a bracket pivotally secured to the extension and projecting laterally therefrom, a vertical upright slidable in the bracket, a moldboard secured to the upright, adjusting meansfor controlling the vertical position of the upright in the bracket to adjust the moldboard bodily vertically, means for adjusting the position of the bracket to impart an angular adjustment to the moldboard, the frame including longitudinal members formed of channel irons, and counter weights secured in the channel portions thereof on the opposite side to the moldboard.

6. In a road scraper a wheeled main frame, a mold board secured to project at the side thereof to cut a shoulder at the side of the road with the Wheels on the finished road sur- "face,*awingrcntter pivoted to. the onter'end ofthe mold aboard, butter adjusting means on the. frame and extending. to the wing cutter,

' arm bears whereby cutting strain on the pivot abracing'arm secured to the wing cutter and projecting therefrom toward the meld board, I

and bearing means on to the mold board against which "the projecting portion of the and adjusting parts is lessened. v V

7. In'a road scraper aiwheeledframe having longitudinal members and front, intermediate andreartransverse members, a pair or channel members servingas portions of the frame constitutin :"i-ntermediate members and: projecting in" parallel relation from the v:rside of the frame beyond ,the'wheels, a bracket disposed between the projectin'gendchanxnel members'fanwupri-ght slidable in the proq jetting bracket, amold board disposed at the bottom of'the upright and means forconposition of the uprigh-tfanda draft bar disposed between the front extension and the upright whereby a direct pull on'themold board 'r'nay be obtainedv and the working strain removed from the adjusting parts.

11. Arroad scraper-as set forthflin claim 9 wherein the 'front transverse member is provided with an extension, a draft bar disposed betweenthe extension and mold board supnortinganupright, a circleframe hav #trolling the angular position of the bracket- 'With respect to they projecting channel mem- Y-bers-to change the angular position of the mold board. v 7 7 7 8; Ina roa'd-scraper'a wheel frame having longitudinal members and front, intermediate and rear transverse members-a pair of. channel members servlng as intermediate transverse frame members and progecting inparallelrelation from the side} of the 1 frame beyond thewheels, a bracket disposed I between'the. projecting ends of the channels. i

members and pivotally secured thereto a filler 7 block below the bracket and secured to the channel members,.ra mold board supported from the free end of'th'e bracket, and screw means threaded in the bracket and engaging the filler block whereby the angular position of the bracket and mold'board with respect totheframe maybe controlled.

.9:. In a'road scr'a-pera wheel frame having 1 longitudinal members-and front intermediate 1 and-rear transverse members, a pair of chanverse, fra-memembers and projecting in paraljnelniembersserving as intermediate trans- 'lel relation fromthe side ofthe'fr'ame beyond 5 it the-wheels, a bracket disposed between the projecting ends of the *channel members, and

7 pivotally. secured-thereto, aliller block be-' low the bracket and securedto-the wchannel members, avertical upright member slidably supported inI'the. bracket, a mold board se cured at the bottom; of; the upright, screw 7 means disposed atthe top or the upright and communicating withthebracket for controlling the vertical positionfof the "u'prightwith respect to the bracket for regulating the hei-ght-ofthemold board, and adjusting means interconnecting the bracket and filler block formovingthebracket about its pivot for controllingftheangularity of themold f10.A;scraper as'described in claim 9' whereimthe front transverse member is provided with an extension coeextens'ivewith the 1 i

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