US1765969A - Road scraper - Google Patents

Description

Juh2-4,1930; 4 G, E. DEAN 1,765,969

ROAD SCRAPER Filed Dec. 5, 1927 2 Sheets-Sheet l 6 "7-way; 2

' I lnvenT or Gouge. Dean 13 (Tomeg June 24, 1930. AN 1,765,969

ROAD SCRAPER Filed Dec. 5, 192? 2 Sheets-Sheet 2 Gem-caeM 3.

Patented June 24, 1930 UNITED STATES PATENT OFFICE GEORGE E. DEAN, OF GRAND RAPIDS, MICHIGAN, ASSIGNOB TO CHARLES C. 'WILLETT, OF GRAND RAPIDS, MICHIGAN ROAD SCRAPER Application filed December 5, 1927. Serial No. 237,662.

- This invention relates to a road scraper construction and is particularly concerned with an adjustable scraper which may be attached to the chassis of a motor truck and which is equipped with various means of adjustment whereby the angle of the'scraper with respect to the length of the chassis may be changed so that the scraper may occupy a large number of difierent angular positions, as well as permit the scraper to be reversed so that it will scrape and deliver the material scra ed from a road surface to either side 0 the road irrespective of the direction in which it is going. The present invention is concerned with many novel improvements over the'device shown and described in the prior patent of Ralph L. Nelson, No. 1,660,806, granted February 28, 1928. It is a primary object and purpose of the present invention to provide a very simple, practical and effective means for ad usting the scraper blade either as to its angularity of positlon with respect to the length of the chassis on which it is mounted or in the direction of the length of the scraper blade.

It is' a further object and purpose of the invention to provide a simple means for adjusting the scraper vertically with respect to the chassis. A still further object of the so invention is to provide the scraper with a simple and practical means whereby when it is loosened for angular adjustment or for longitudinal adjustment for a limited distance, the scraper will be supported and the adjustment may be quickly and easily affected, requiring but a short time and the service of but one to effect the adjustment desired. i A further object and purpose of the pressent invention is to provide a practical and novel means for tilting the scraper blade into engagement with the road surface or away therefrom when scraping is not to be and purposes than those specifically stated will appear fully and in detail as an understanding of' the invention is, had from the following description taken in connection with the accompanying drawings, in which,

performed. These andmany other objects Fig. 1 is a side elevation of a truck equipped with my invention.

Fig. 2 is a fragmentary plan view illustrating the truck frame and the scraper adjustably mounted thereon, together with the scraper operating means, certain parts being broken away for a better illustration of the construction.

Fig. 3 is a fragmentary enlarged side elevation of the construction of scraper and operating means therefor comprising my invention, and 1 Fig. 4 is a fragmentary transverse section illustrating the method of mounting the scraper.

Like reference characters refer to like parts in the different figures of the drawings.

The motor truck on which the scraper is to be mounted is of any well known construction having spaced apart chassis side frame members 1. To each of the chassis members 1 a pair of vertically adjustable supporting bars 2 are secured in s aced apart relation. Each of the bars 2 as a somewhat elongated vertical slot 3 therein and the outer sides of said bars are serrated thereby providing a continuous series of a1- ternate raises and depressions 4 which lie horizontally at the outer side of each bar as best shown'in Fig. 3. Clips 5, serrated at their inner sides, to correspond with the serrations 4 lie against said serrations 4, through which bolts 6 passing through the chassis frame members extend, receiving nuts at their outer ends whereby any vertical supporting bar'2 is permanently yet adjustably secured in place on a chassis side frame member with its lower end portion extending below the lower side thereof.

Each pair of supporting bars 2 at each side of the truck at its lower end carries a pair of horizontal bars 7 which lie one at each \side of the lower ends of the bars 2 being permanently bolted thereto. Each pair of bars 7 at its front end extends a short distance beyond the front vertical support 2" therefor. A beam 8 of channel form is located underneath and extends across between the pairs of horizontal bars 7, and may be car- 100 beaniBd-o be moved in the direction of its lengthsa limited distance on thebars 7 suporting 'itT Two' bolts 10 extend upwardly etween the bars of each pair of bars 7, one

at each side of the beam 8, at their lower ends pass through clips 11 shaped to engage with the down turned flanges of the channel beam 8. Said bolts 10 at their upper ends carry nuts which may be loosened or tightened, and when the same are loosened the beam is free for adjustment either i longitudinally or angularly; and when tightened the beam at its upper side is brought into binding engagement with the lower sides of the bars 7 lifting the stirrups 9 a short distance above said bars so that no strain is imposed thereon.

Underneath and lengthwise of the beam 8 is a scraper blade. 12 carried by suitable coiled springsupports 13 connected with j 14 which are mounted on a: shaft, 15 located below the beam 8 and rotatively mounted insuitable bracket supports extending downwardly therefrom. The spesleeves 'cific constructionof the attachment of the known and has heretofore been patented to David E. Burns.

scraper blade to the beam 8 forms no part of the invention as the same is old and well An arm 16 is attached to and extends downwardly from the shaft 15 the purpose of which will later appear.

At one side of the truck and a distance in front of-the scraper blade mounting and assembly, a supporting bracket 17 is bolted to the side of the truck frame which at its upper and lower ends is provided with outwardly extending horizontal ears 18 and 19 betweenwhich a screw threaded shaft 20 extends. The shaft above thei ear 18 is extended upwardly, as indicated at 21, and at whereby it its-upper end receives a crank 22 crank 22 is maybe. manually turned. The

. located in a position alongside the cab of the truck and is freely accessible to the driver of pivotally mounted, at 27, on a block 28 ad-' the truck. Block23 with a screw threaded opening therethrough is mounted on the screw 20. Oppositely extending trunnions 24 project from the block 23 as shown.

A lever 25 has a forked front end so as to pass at opposite sides of theblock 23. Thefront ends ofthe fork are slotted, as indicated at 26, the trunnions 24 extending into the slots. At its rear end lever 25 is justably mounted for vertical adjustment on a vertical rod 29 which is permanently secured at its upper end to the chassis frame member 1 by means of a suitable clip 30, best shown in Fig. 3.

The projecting ends of the pairs of bars 7 located'in front of the front vertical supand said bolts otaljconnections at its ends to said arm and lever. A second arm 35 is rigidly secured to the shaft 32 substantially midway between its ends, extending downwardly there'- from, to which the front nd of a link rod 36 is pivotally connected. ink 36 extends rearwardly toward the arm "16 and has a loose universal oint connection therewith as indicated at 37 in Fig. 3. v

From the foregoing description it is'clear that the beam 8 carrying the scraper blade may be adjusted to many different positions. It can be angular-1y adjusted so as to scrape the road and deliver material scraped therefrom to one side when the truck is goin in one direction and may be then reverse as to its angularity so that when the truck is returning over the. road in the opposite direction the delivery of material from the scraper will be to the same side of the road. Also the beam 8 may be adjusted in the direction of its length.

, The construction shown comprising the pairs of bars 7, the clamping bolts 10 and the clips- 11 is one wherein by merely loosening the nuts on the bolts 10 the scraper is ready to be quickly and easily changed as to posi-.

tion and immediately clamped securel in the new position to which it has been changed.

The mechanism for raising and lowering the scraper has proved very practical and efficient and is one which is very effective and durable in service. justment of the supporting bars 2 is one which does not become loose and which is absolutely sure to remain in any position in which it is clamped-by the clamping members 5. The construction described combines reversibility of the scraper with extreme simplicity and durabilit of the construction for effecting angular adjustment or reversibility together with an ability of one man to very quickly and easily secure any adjustment desired. The invention is defined in. the appended claims and is to be considered comprehensive of all forms of structure coming within their scope,

'I claim: a

1. In combination with a truck frame hav ing spaced apart chassis side frame members, a pair of bars located below each side frame member of the truck, two vertical depending supporting bars connected at their upper ends to a chassis side frame member and depending therefrom and at their lower ends passing between the bars of a pair of bars and secured ,"thereto, a scraper carrying The vertical ad-r memes beam located transversely of and below said pairs of bars, clips detachably connected with said supporting beam at each side thereof, and means passing through the cl ps and extendingbetween the bars of sa1d pa1rs of bars and attheirupper ends bemg provided with tightening and loosening devices for clamping the beam against said pa1rs of bars or releasing the same for adjustable movement with respect thereto.

2. In combination with a motor truck having spaced apart chassis side frame members, a scraper carrying beam mounted below and transversely of the chassis frame, a horizontal shaft carried by and below sa d beam, a scraper blade mounted for rocking movement about said shaft, a vertical screw threaded shaft mounted at one side of the chassis frame in front of Said scraper blade, a screw threaded block through which the threaded shaft passes, a lever pivotally mounted at its rear end on the truck frame and having pivotal and slidable connection with said block at its 'front end, a second horizontal shaft, an arm\.extending down- -wardly and forwardly therefrom, a link tal plane, a rock shaft carrying a scraper blade mounted on said beam, a counter shaft rotatably carried by and below said truck I and extending transversely thereof, an arm extending radially from said counter shaft and located substantially centrally relative to the truck and beam, means connecting the end of said arm withsaid rock shaft near its center whereby. movement of said counter shaft and arm will rock said rock shaft to raise or lower said scraper blade' and means operable from the drivers seat of the truck and associated with said counter shaft" for rotatingthe same. I

4. In combination with a motor truck, a beam mounted on and below said truck for angular adjustment relative'to the truck in a horizontal plane, a scraper carrying rock shaft mounted on said beam a counter shaft mounted on and beneath sa1d truck and extending transversely thereof, anarm extending radially from said counter shaft near the longitudinal center thereof, means connecting the movable end of said arm with .said scraper carrying rock shaft near the longitudinal center thereof whereby rocking movement of the counter shaft will cause corresponding rocking movement of the rock 1 shaft and scraper blade thereon, a lever pivoted to the truck at one end of the lever and horizontal supporting means attached to said truck vand vertically adjustable relative thereto, a beam extending beneath said truck and mounted on said supporting means for angular adjustment relative to the truck, a

scraper blade carrying rock shaft mounted on said beam, a counter shaft extending transversely of the truck and rotatably mounted upon said supporting means whereby vertical adjustment of the supporting means simultaneously vertically adjusts said beam, rock shaft and scraper blade and countershaft, a radial arm extending from said counter shaft near its center, means connecting the movable end of said radial arm with said scraper carrying rock shaft near its center where-by rocking movement of the counter shaft will cause corresponding rocking movement of the rock shaft and scraper blade and means associated with said counter shaft and operable from the drivers seat of the truck for rocking said counter shaft.

6. The elements defined in combination in claim 5, wherein the means operable from the drivers seat of the truck for rocking the counter'shaft is associated at one end of the counter shaft.

7. In a combination, a truck frame having chassis side frame members, a pair of bars spaced short distances apart from each other located below and parallel to each side frame member ofv the truck, means for connecting said pairs of bars to thetruck side frame-members comprising vertic I depending supports adjustably connected for vertical adjustment to the chassis side frame members and at their lower ends passing between, the bars of said pairs of bars to thereby serve to space the same from each other, said connecting means being spaced apart from each other, a scraper carrying beam located across and below said pairs of bars, bolts extending downwardly between the bars of each pair of bars, and clips through which the bolts pass detachably connecting with said beam at opposite sides thereof whereby on tightening the bolts the beam is clamped against the lower sides of the bars of said pairs of bars, and when re leased said bolts with the attached clips and associated beam may be moved to different positions in the length of said bars.

8. In a combination, a truck frame having chassis side frame members, a pair of bars spaced short distances apart from each other located below and parallel to each side frame member of the truck, two spacedapart vertically positioned supporting bars longitudinally slotted for a part of their length and having lower ends located between the bars of said pairs of bars serving to space the barsfrom each other, said vertical supporting bars having transverse serrations on their outer faces,"bolts passing through the chassis side frame member and'through the slots in the vertical supporting bars, clips 1 --having inner sides serrated to corres 0nd with the serrations on the supporting ars,

Y acrossand below jsaid pairs of bars, bolts extendingdownwardlybetween the bars of and nutsthreadedon to the outer ends-of said bolts, a scraper carrying beam located each pair of bars, and clips through which the bolts pass detachably connecting with said beam at opposite sides thereof whereby on tightening the bolts the beam is clamped against the lower sides of the bars of said pairs of bars, and when released said bolts with the attached clips and associated beam may be moved to different positions in the length of said bars.

In testimony whereof I afiix my signature.

GEORGE E. DEAN.

Images