US1493927A - Road drag - Google Patents

Description

May 13, 19240.

A. F. FISCHER ROAD DRAG f ile une 1 1922 2 Sheets-5heet 1 fiZBE/PTFHSC 6 571.

ont

earner r. FISGa ROAD E IHBOW'Jh CITY, IOWA.

DRAG.

Application filed June 1, 1922; Serial No. 585,078..

scarifying, dragging, distributing loose. ma-

terials in de ressions and the spreading and packing of oose materials on a sand-clay,

earth or gravel road, and leaving the finished road with the configuration of a crown, all-,of which the machine performs in one operation. 7 i

These several features are accomplished by the employment of a plurality of converging and diverging blades carried by a frame" that is drawn over the road surface.

The invention consists of certain novel features of construction and combinations of parts which will be hereinafter described. and pointed out in the claims.

In the accompanyin drawings, Fi ure 1 is a top plan view of t e inventlon. 2 is a longitudinal vertical sectional view. Figure 3 is a detail sectional view showing the manner of mounting the crowning blade. Figure 4 is a vertical sectional view showing the manner of adjusting the angle of the crowning blade. Figure 5 is a detail sectional view showing the manner of fastening the cross beams to the runner and the blades to the cross. beams. Figure 6 is a detail sectional view'showing the manner of attaching the angular blades to the cross beams. Figure 7 is a perspective view of a portion of the scarifielr.

The machine is intended to be constructed of metal parts although it is possible to emloy other materials, and as shown, the rams is rectangular in she 6, consisting of parallel. runners 1'0, 10, an front and rear channel beams 11 and 12 respectively. The front beam 11 is interposed between the forward ends of the runners and supports an adjustable scarifier 13 conforming to the crown of the road, which breaks up the bum s or accumulations which may gather he travelled roadway.

The scarifier 13 is provided-with a series or steel teeth 39 concaving forwardly, and

igure is journalled to the runners by a shaft 40. The lower face of the scarifier is curved to conform to the crown of the road surface. A lever 41 is attached to the scarifier 13, and cooperates with a bar 42 attached to the beam 11, and is provided with holes through which a'pin may be inserted for holding the scarifier at various angles according to the use to which it may be employed.

Arranged transversely of the frame and at suitable intervals are cross beams 14, 15, 16, 17, preferably 'lFshaped. These beams are connected-to the runners by bolts, 18. Attached to the forward ends of the runners 10 are two blades 19. These blades converge toward eachother and are attached at their inner ends by means vof bolts to the cross beam 14;. The blades do not come together at their inner ends but an opening is formed therebetween for the assage of the loose dirt. 0n the front sides of the blades are wear or scraping plates 21. The blades 19 are inclined so that their lower .surfaces are elevated and lie in a higher plane than at their forward ends thereb conforming to the crown of the road be Located back of these blades 19 are blad 22 carried by cross beams 15 and 16, to which they are suitably attached. These blades are provided withwear or scraping plates 23. The forward ends of the two blades 22 are'brought together while theirrear ends extend toward the runners 10. A space 2 1is formed between the ends of these blades and the runner {to permit the loose earth or dirt to pass ed from. the blades and around theirends. These blades are supported at their forward ends at an elevation somewhat higher than the elevation of therear terminals of theblades 19 and {gradually slope downwardly toward the runners 10 whereby they conform to the. road-surface. 7

Another set of blades 25 are attached at their forward ends to the era 10 and extend at an angle inwardly toward the rear of the machine. These blades are inclined somewhat similarly to the blades 19 and their inner ends are located at an elevation slightly higher than the inner ends of the blades 19. The inner ends of these blades being supported by the cross beam 17 and are provided with wear or scraping plates 26. An opening 27 is formed between the inner ends of the blades for the a: charge of the loose material which has n Edd collected. Itis to be noted that the angle of the blades 19 and 22 are approximately the same with respect to-the runners 10 while the angle of the blades 25 is greater and their inner ends are brought closer together and a smaller opening is formed between the ends of these blades thanv that formed be-' tween the ends of the blade 19. A crowning blade 28 extends transversely of the machine and isjournalled to therunners 10 by a shaft 29. The lower or working surface-of blade 28 is made concave to conform to the contour of the crown or road surface the scarifier 13 will break up the enlargements or uneven surface and this loose material will be first taken up and acted upon by the blades 19. The blades 19 and 22 are scraping and shaving blades and will act upon the road surface causing the roughened surface of the roadway to be shaved or cut and theloose material removed by the scarifier and willpass along the blades and will first be. discharged from the blades 19 through the openlng 20 formed between the ends of the blade and delivered onto the blades 22. This loose material to ether with the loose earthremoved by the lades 22 will then be delivered onto the blades 25, the loose earth passing from the blades 22 through openlngs 24 formed between the ends of these blades and the side of the frame. Plates 26 extend only a short distance from the forward ends of the blades 25, that is, a

short distance beyond the outer ends of the blades 22 so that a'scraping action is produced along the sides of the frame inwardly for a short distance. Plates 26 project approximately one half of an inch below the bottom edge of the blades 25' so that these blades or the bottoms thereof do not come in contact with the road surface and as the material which has been delivered to the blades 25 isfed or carried along these blades due to the movement of the machine the loose earth will pass beneath the blades 25 and enter the holes or depressions in the road surface and be packed therein. The remaining loose earth which does not pass beneath the blades 25 will pass through o ening 27 formed between the ends of these b ades and will be delivered to the crowning blade 28. The crowning blade 28 may be' adjusted or tilted forward suficiently to allow the passage of just enough loose material to give the proper crown fimsh to the road bed and to properly pack the loose material. By referring to Figure 2 it will be noted that wedges or blocks 34 are inserted between the runners 10 and th'e cross beams 14, 15,16 and 17 whereby these beams may be elevated to the proper height to support the various blades. This adjustment permits the inner ends of the blades 19 to be elevated to conformto the crown of the road and the same is true of the blades'22 while the-adjustment for the blades 25 insures that they will conform to the road surface yet their lower surfaces are elevated approximately one half of an inch above the bottoms of the blades. 19 and 22 so that they will be sufliciently elevated to come above the loose material and cause it to be packed into the holes or depressions of the road surface.

Connected to the forward ends of the runners 10 are straps 35 and connected to these straps are pull bars 36 by means of rings 37 The ends of the pull barsare ada t ed to be connected to the draw bar 0 a tractor by chains or the like for pulling the road machine along the roadway.

I claim as my invention:

1. A road drag including a frame having a pair of spaced parallel runners adapted for gaging the width of a roadway, a pair of scraping blades mounted on the forward 7 portion of the frame with outer ends enga ing the runners and converging rearward y leaving a space between the inner ends for the passage of material scraped thereby, a second pair of blades mounted on the frame in the rear of the first mentioned blades, and having their forward ends secured together and positioned in line with the space between the first pair of blades and inclined outwardly and rearwardly toward the run-' ners but having the outer ends spaced therefrom for distributing material from the scraping blades, a third pair of blades mounted on the frame having the outer ends engaging the runners and inclined inwardly and rearwardly and having the free ends in spaced relation for returning material from the second pair of blades or distributing blades to the center ortion, and an adjustable crowning blade or finishing and crowning the entire road surface.

2. A road dra including a frame havin a pair of s ace parallel runners adapted for gaging t 'e width of a roadway, scrapin blades mounted atthe forward end of sai frame for scraping the roadway between said runners and depositing the material scraped in the center portion of the roadway, distributing blades mounted in the rear ofsaid scraping blades and adapted for dis-' tributing the material from said scraping messes, v v s blades over the surface of said roadway, reblade, a bar mounted on said frame and is turning blades mounted in the rear of said. means for securing the lever in any one of a distributing blades for receiving surplus plurality of predetermined positions on said material from said distributing blades and bar forpositioning-the crowning blade in a 5 returning it to the center portion of the roaddesired position of adjustment relative to way, a crowning blade pivotally mounted in said frame. 15 the rear of said frame and said returning In testimony whereof I have signed this blades for crowning and finishin said roadspecification. Way, a lever mounted on sai crowning ALBERT F. FISCHER.

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