US1894410A - Blade for road maintainers - Google Patents

Description

Jan. 17, 1933. w. J. MATTICE BLADE FOR ROAD- MAINTAINERS 2 Sheets-Sheet m@ W .O 0 O O. O o

Gttorneg Jan. 17, 1933. w. J. MA1-TICE BLADE FOR ROAD MAINTAINERS 2 Sheets-Sheet 2 Filed NOV. 2l, 1951 Snucntor Patented Jan. 17, 1933 UNITED; STATES yBLADF *ron ROAD iierAIiv'rAnvnnsl .liprlicationk mea-Nnvemberfm, 1931.y semina-(576,581:

The present Linvention relates toimprovements inf planingbladesl for roadI ,maine tainers, and has for anobj ect, broadly speak-f ing, to fprovidesuch a construction. for; the

earth-moving members A of. road-,maintainers that the surface of the `ground on roadway will be cut or planedl smoothly,-and whereby depressions yor Apocketsthereofwill be iilled.- i Another fobject of. the invention iis to pro- -A 7.0 vide an earth-movingmemberfadapted-eto plane and uniformly smooth thesu-rfaceof the' road and which isso constructed and' adapted for: usefthat` it Y may beemployed I in:y

connection with road surfacing machines` of 151any. type.; Y

A further object offtheinvention isptoL provide-an earth-movingfmember for road j;

dotted line 6-1-6 of vFigure 3 and looking in thedirection of,the,a1roWs,-and1 `Figure 7 is an end view of a modified form maintainers consisting ,of `an arcuate planing blade detachably mounted upon a supporte 20. ing plate in such manner that `the bladewill have two pointsor lines of'` contact; upon:y

theroadway to permit ireversibility. of said contact points, and to provide"meanswl-iereby said contact points f become automatically 25. sharpened in use, thisbeingof advantage.

in instances-where. gravel or` similari. hard substances are encountered on road bed.;

A still further and-importantk object of the invention.l is to. providefa scraper or. planer bladeA having two pointsof contactiV with the roadway and for this reason of `rigid construction, whereby YFchattering7 of. the;

blade is avoided.l insuring smooth, cutting and planing of a road bedY and ehminatmg corrugationsror` rough contours thereof. i

Astill furtherobject ofthefinvention is` to provide ani-improved scrapingtblade for road maintainers `which willhave double contact along spaced parallelflines ywith the yroadway tofimpart aistabilizing eect tothe blade besides giving toY it L advantages., of reversibility and self-sharpening.i

Withthe foregoingand other objects in view,l the invention willbeY more, .fully de.v

l scribed hereinafter, and fwill ,be more parproved blade,

y*blade 1811s removablefrom the arms`12 and reversible, and provided with a sharp cutting' ticularly pointed v.out in theiclaimsiappended In the'v v drawings, whereinr like symbols re.- v

.afer to like or correspondingparts through- Y out the several vlews,

Figure 1 1s a perspective view of. a road maintainer .showing.jthe. improved planing blade; applied thereto ina position of use..

Figure 2 is a fragmentary perspectiveview.

Figure 3 is a top plan View of the provedblade. y Figure 4 isa side elevation of .the.same. 1 Figure 5 isa bottomt plan View of the im- Figure 6 isatvertical section Ytaken on the .road 'maintainer incorporatinginits convstruction'a horizontal rotatable :turntable 11, 70V

drop-arms 12 carried thereby, a blade 13 sup.-

Y ported ,by the farms 12, ,and means lfor lraising .and lowering the arms .12 and rotating' the turntable 11; i

Such means mayv comprise any conventionval arrangement of shafts, gears or bell crank .y levers.

The improved blade according tothe pres- `ent invention consists of a vertically dis-V posed tang 14 having a number of apertures through which bolts, rivets or other zfastenings 15 may be passed to permanently orrre-` movably'fsecurethe tang 14 to the bladenl. As heretofore practiced inthe-art, the

edge'l. .f i y f The use *ofvsuch blade imparts a rippled',

corrugated. or wash-board-like4 contoury to a roadwayinithat it is susceptible of, and` de-y scribes, minute vertical reciprocating movements, being held against the roadway by means of the weight of the arms 12 and blade 13, or engaging against the roadway by means of springs in a well known manner.

In the operation of such machine it is essential that the blade be pressed firmly desired, the new blade may be provided with a rectangular configuration as indicated at 18 in Figure 7. Figure 7 is otherwise like Figure 2 and the other figures in the case.

Dependent from the tang 14 and preferably integral therewith is an arcuate member or blade 19. As best shown in Figure 7 this arcuate member or blade presents a forward cutting edge 20 and a trailing cutting edge 20. `These cutting edges 2O and 20 may be reversed. f

Adjacent the cutting edges 2 0 and 20 are the sole surfaces 21 of the'blade 19 which are in contact with the roadway at all times, thusA `providing two substantially parallel and elongated bearing surfaces of considerable width.

The improved blade 19 is comparatively massive and heavy in construction; and, therefore, while engaged against a road surface, particularly one having gravel embedded therein, the road contact surfaces 21 of the improved blade will become automatin cally sharpened in use, while at the same time planing off thesurface of a road.

In operation, and particularly referring torFigure 2, the roadway 'is indicated at 30 upon which,forwardly of the blade 19 are shown corrugations 31, which might have been made by the old type blade. As the new-'blade 19 is drivenV forwardly over the road surface 30, the forward cutting edge 20 will plane off the upwardly projectilng` portions of the corrugations 31 and produce a quantity of loose road material such as may pass under the cutting edge 20 and will be engaged against the rear cutting edge 20', theV accumulation being indicated .in Fig,- ure 2. l

Such rear edge 20', in its forward movement, will dispose this surplus,'loose road material into the interstices of the roadway 30, such as the depression indicated at 32: such depression becoming filled and backed after the blade has passed thereover, as ina dicated at 33.

When the forward cutting edge 2O of the blade 19 becomes dull through use, the blade is reversed bringing the trailing edge 20 forward, which trailing edge has been undergoing a sharpening process during its f roadway or that a previously corrugated` roadway will be leveled by striking ofi' the projecting portions and compacting loose portions in the' depressions.

From the foregoing description it is thought to be obvious that a blade for road maintainers constructed in accordance with my invention is particularly well adaptedA so f for use by reason of the conven'ience'and'fa` L cility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and V modification without departing from the principles and spirit thereof, and for this i reason I do not Wish to be understood as limiting myself to the precise arrangement and, formation of the several parts herein shownV in carrying outmy invention in cept as herein claimed'.` Y

Whatis claimed is f 1. An improved bladey for scraping roads v comprising a massive substantially arcuate body having a supporting tangvextendingupwardly from approximately the central por-Y tion thereof, sole surfacesupon opposite edge practice ex portions of the arcuate blade adaptedl to rest simultaneously upon the road surface to be planed, and sharp reversible cutting edges` outwardly of said sole'surfaces.V

2. An improved blade for scraping comprising a'substantially arcuate body, a tang extending upwardly" from said body, sole supports upon oppositeedge portions of the arcuate blade adapted` to rest simultaneously upon the surface to be planed, and

roads i sharp cutting edges outward of said sole sup-V ports, said cutting edges adaptedk to bere versed whereby a'self sharpening cutting edge is presented.

3. In a road maintainer having a blade, ar

scraper comprising a massive'substantially` arcuate body, a tang extending upwardlyv 12o-J from said scraperv for connecting said bladel and scraper together, sole supports upon oppositeedge portions of the arcuate scraper adapted to rest simultaneously upon the surface to be planed and sharp cutting edgesl outward of said sole supports, said .cutting edges adapted to be reversed whereby aself Y sharpening cutting edgesis presented.

4. In a road maintainer having a blade, a scraping` blade comprising a massive substantially arcuate body, a tang extending up'- Wardly from said scraping blade, said tang having its inner upper portion beveled for connection to the first mentioned blade, road bearing surfaces on opposite edge portions of said arcuate body, and cutting edges out- Wardly of said bearing surfaces, said cutting edges adapted to be reversed whereby a self sharpening edge is presented.

In testimony whereof, I have aixed my signature.

WILLIAM J. MATIIGE.

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