US1660806A - Road scraper - Google Patents

Description

memos Feb. 28, 1928.

R. L. NELSQN Ro" scRAPER Filed April 18A 1,927

2 Sheets-Sheet 1 Feb. 2s, 192s. 1,660,806

R. L. NELSON ROAD SCRPER v Filed Aprl 18. 1927 2 Sheets-Sheet/Z mun ////////////////y/ E. v/// akkovwzlg.

Patented Feb. 28.1928. y

,UNITED STATES n 1f 1,666,666 4PATl-:NTS orrlcs. l,

RAJPH L. NELSON, OF GRAND RAPIDS, LMIIGHIGAN, ASSIGNOR TO G'.

` WILLETT, OF GRAND RAPIDS, MICHIGAN.

ROAD SCRAIEB.

Application mea April 1s, 1927. serial no. 184,655.

This invention relates to road Scrapers and is more particularly concerned with an adjustable scrafper adaptedto be attached to the chassis of a motor. truck and having.

means of adjustment whereby the angle of the scraper with respect to the chassis may be changed and adjusted so thatv the vscraper may occupy a number of different angular positions and enable it to scrape either side of the road irrespective of the direction in which it is going. It is also possible to adjust the scraper so that it lies at right angles to the length of the truck and in such position adjust the scraper longitudinally a limlited distance in either direction.

It is a primary object and purpose of the present invention to provide a simple, practical and effective means for thus adjusting -the scraper blade thereby making the scraper much more etl'ectivethan heretofore. A further ob'ect of the invention is to provide such adjustment and at-the same time retain a practical and effective means for raising and lowering the scraper with respect to the road surface, such means being the subject matter of. a prior patent to David E. Burns, No. 1,625,019, granted April 19, 1927.

An .understanding of the invention may be had from the following description taken in connection with the accompanying drawings, in which,

Fig. 1 is a side elevation of a truc equipped with my` invention.

Fig. 2 is a fragmentary planview show ing the truck frame and the scraper adjustably mounted thereon, there being also -indicated various angular positions which the scraper may occupy.

Fig. 3 is a fragmentary plan viewwith some parts broken away illustrating the manner in which the scrapersupporting bar is mounted upon the truck frame, and

Fig. 4 is a side elevation of the construci tion shown in Fig. 3, with some parts shown in vertical section and the scraper illustrated in two different positions, one in full and the other in dotted' lines.

YLike reference characters refer to like parts in the different figures of the draw- 1n g'lhe motor truck on which the scraper is to be mounted may be of an conventional construction, the chassis side rame members bein indicated at 1. To each of the side memrs- 1, a metal supporting and guide bar is permanently secured, each complris.`

' ing a flat horizontal section 2 located a s ort distance below and parallel to the'lower side of f the frame member 1 with which it is assoc'1ated,and at each end being twisted at rlght angles and turned upwardly latri ht angles to make the attaching arms 3 which are bolted securely to the frame memberP 1 above it. f j

A beam or` bar 4 preferably of channel .iron islocated below the horizontal bars 2 and adjustably mounted thereon by means of heavy metal clips which each have an intermediate portion 5 and ends v6 bent to lie in a planebelow the plane of the intermediate portion. These clips pass over the horizontal parts 2 of the guide and sup rting members so that the bar 4 is movement on the guide bars 2. of the intermediate portions 5 of the clips are greater than the width of 'the guide #bars 2. l

A lurality of brackets 7 are secured in 4space apart relation to the under 'side of the bar 4 and carry a shaft 8 rotatably mounted thereon, on which the scraper blade 9 is `mounted b means of springs 10 in'a manner like t at shown in Patent No. 1,429,125, issued vto David E. Burns, on the 12th dayiof September, 1922.

An arm l1 is rigidly secured to the shaft 8 substantially midway between its ends and is connected by a link 12 tot-he rear end of a lever l13, pivotally mounted between its ends von a bracket 14 which extends downward from the chassis of theA motor vehicle. A vertical shaft 15 equipped with a. hand wheel at its upper end is mounted for' rota tion adjacent the drivers seat of the vehicle at one side ofthe chassis and has4 a. screw and nut connection, indicated at 16', with the- 1n osition with res ect to 4said bars. In

ad ition hook mem ers 18 (see IFig. 4)

adapted to engage with` the ianges of the I'hunte yfor e lengths bars 2 and thereby hold the clips rigidly channel bar 4 are located below each'of said y bars 2 and screws 19 and 19l pass downwardly through the bars 2 and' thread ,into

said hook members so that the same may be clamped'tightly against the edges of the flanges of bar 4 and aid in holding said bar in the positions to which it may be adjusted. A plurality of holes are made f through the bar 2 spaced at equal distances apart so as Ito define predetermined positions that the screws 1 9 are to take and 1n this manner define varlous posltions of the scraper supporting bar4. A brace bar is pivj through the bar 4 to engage with the hook member 18 as shown in Fig. 4.

It is evident from the foregoino description that the bar 4 which carries the scraper may be adjusted to many different positions. v

It isshown in one position in Fig. 2. By loosening the set screws 17 and by removing the set screws`19 and 19, this bar-may be -swung to any'of the positions indicated by dot and dash line in Fig. 2 It also may occupy two other positions, butl such positions,` as they would be merelyv parallel to two of the positions already indicated, are not shown in Fig. 2. The scraper ma be reversed so as to scrape to eitherside o the road irrespective of the direction in which the truck is going.

. It is also evident that in the position directlyacross the truck, or at right angles thereto, the scraper may shift longitudinally a limited distance, in practice about 6 inches, due to the length provided by the raised -sections 5 of the attaching clips greater than the width of the bars 2.

When the bar 4 is shifted from the posi- Ation in Fig. 4 to the other .indicated in dotted lines in the same f1 re the diagonal brace 20 is turned aroun so that it will voccupy the dotted line position shown. through which the screws 19 and 19 pass are equally spaced so that said screws 19 and 19a may connect with the hook members: 18 when the channel bar 4 is at the middle or intermediate position.

This constructionis very practical and effective, relatively sinple to produce, is

strong, durable and e cient. 'The reversibility ofthe scraper as tothe direction in which material' will -be scraped is very desirable: In those cases where the scraper is at r1ght angles to the length of the body, 1t being used in such position for smoothing oil relatively small protrusions and hummocksm the road, it is many times very The holes desirable to shift the scraper bar longitui dinally and the construction which I havel devised readily permits this. The inventlon is defined in the appended claims and is to be considered comprehensive of all forms of structure coming within their scope.

I claim:

1. yIn combination,.a truck frame having chassis side frame members, bars attached one to each side frame member and located below and having flat-horizontal portions parallel thereto, a scraper carrying beam Y located across and below said horizontal portions of the bars, la scraper carried by and de ending below said beam,7 and clips attac ed to the upper side of said beam having elevated middle portions passing over the horizontal portions of said bars whereby the beam with the attached scraper may be .adjusted to diiferent angular positions with respect to the longitudinal center line of the truck frame andmay also have. av limited longitudinal adjustment) 2. In combination with a truck frame having spaced apart chassis side frame members, horizontal supporting and guide bars attached one to -each frame memberl and located parallel to'and a short distance below said frame members, a scraper carrying .beam extending across and below said supporting and guide bars, a scraper carried by4 and dependin from said beam, metal clips attached to t e upper sidev of said beam having elevated intermediate portions longer than the width of the supporting and guide bars', and means for securely yet detachably connecting the beam with the guide bar on f which it is mounted.

` 3. In combination with a 4truck having spaced apart chassis -side frame members, supportingr and guidebarsvfattached one to each frame member having a horizontal portion located below and parallel to the side frame member on which it is mounted,.a

scraper carrying beam extending below' and against said horizontal portions, means for mounting the beam on said bars whereby it may be adjusted to different angular positions and also may have a limited longitudinal adjustment and means for securely yet detachably holding said beam on the supporting and guide bars in the position to .which it is moved.

4. In combination with a motor truck having spaced apart chassis side frame members, supporting and guide bars attached one to each side frame member of the truck and having horizontal portions lying below and parallel to said side members of the truck, a

j scraper carrying beam extending across and underneath said horizontal portions, heavy metal clips attached to -said beam formed with elevated intermediate portions longer than the width of saidvhorizontal portions passmg over said horizontal portions, and

l elnds with upwardly extending attaching, sections permanently secured to thejframe -members of the truck, said bars having a plurality of spaced apart openings therethrough, a scraper carrying beam located 15. below and extending. across said bars, means for slidably mounting the beam on the'bars whereby it may be shifted to different angular positions with respect thereto, and means extending through the openings in said bars and detachably connectedwith said beam for holding the beam in a is adjusted.

6. In combination with position to which it a motor truck I having spaced apart chassis side frarnemem-l bers,{ilat bars lying in the same horizontal plane located one below each side frame ILocalice of the supporting and guide of channel form having downwardly ex- Ltending an'ges located below andextending 30 across said bars, said bars having a pluralityr of spaced apart openings therethrough, means for slidably supporting and guiding said beam on the bars, 'screws passing down` wardlv through selected openings in the bare at each side of said bea'm, and hook members engaged with the lower edges of the 'ilanges of'said beam into, which said screws thread, substantially as and for the purposes de. scribed.

7. A construction containing the elements in combination dend i-n claim 6, combined with braces pivotally connected adjacent their upper ends one with each side frame member of thetruck, and at their lower ends .having each a lfoot lying against the upper side of the beam carrying bar,. certain ,of

-said screws passing through' the bars and engaging with the hook member also passing through said feet. 1

' In testimony whereof I *atlix mv signature.

RALPH L. NELsoN. 'e ff

Images