US1030287A - Road-scarifier. - Google Patents

Description

N. DB WIND.

ROAD SGAEIFIER.

APPLICATION FILED OCT. 30, 1911. 1,030,287. Patented June 25, 1912.

I 45 J7 J2 IIIIl/I/ll v 2Q 1" 'HW N. DE WIND.

ROAD SGARIFIER.

APPLICATION FILED 001 .30, 1911.

1 ,O3O,287, A Patented June 25, 1912.

2 SHEETS-SHEET 2.

a jyj n 'li iii'ii I mu jzoenZFd' 4646M QMMJ al a/MW 1 WM% srnrns PATENT OFFCE.

NORMAN DE WIND, OF CHICAGO, ILLINOIS, ASSIGNOR TO AUSTIN MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, .A. CORPORATION OF ILLINOIS.

ROAD-SCARIFIER.

Specification of Letters Patent.

Application filed October 30, 1911.

Patented June 25,1912. Serial No. 657,396.

To all whom it may concern:

Be it known that I, NORMAN DE WIND, a subject of Great Britain, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Road-Scarifiers, of which the following is a specification.

This invent-ion relates to road scarifiers, the purpose of which is to tear up or scarify the old surface of a road so that the same may be removed or some of the material may be again utilized in reforming the surface.

One of the objects of the present inven tion is the provision of a machine of this general character having powerful tools or tines adapted to loosen and tear up the surface of the old roadway so that the irregularities of its surface are reduced to a uniform bed on which the new crust or surface may be formed.

Another object of the invention is the provision of novel means for adjusting the tines to various depths of cuts and to various angles or inclinations relative to the surface being acted upon so that the surface may be loosened to any desired depth and the action of the tines may be modified to suit the character of the particular surface which is being scarified.

Other objects and advantages of the invention will be apparent as it is better understood by reference to the following description when described in connection with the accompanying drawings illustrating one preferred embodiment thereof.

Referring to the drawings :Figure 1 is a plan View of a scarifier embodying my invention. Fig. 2 is a sectional elevation taken substantially on the line 22 of Fig. 1. Fig. 3 is a transverse sectional elevation taken on the line 33 of Fig. 2. Fig. 4 is a sectional view taken on the line 4c-41- of Fig. 2.

From the drawings it will be observed that the scarifier comprises a main frame consisting of the side members 5 connected at their forward ends by the upper and lower connecting front members 6 and 7 respectively and connected together intermediately their ends by shafts or rods 8, 9, 10, and 11, each of which carries a sleeve 12 which holds the side members apart, while the bolts or rods draw them snugly against the ends of the sleeves. The rear end of the machine is supported upon an axle 13 carrymg the rear supporting wheels 14 and 15, while the front is carried upon a truck or turn table 16 support-ed upon the front Wheels 17. A tongue or draft rod 18 projects forwardly from the truck 16 by means of which thescarifier may be drawn along and a cable or link 19 connected to the front of the frame is utilized for drawing the machine when in actual operation, the

tongue 18 being at such time preferably removed by withdrawing the pin 20 which holds the tongue in-place. A steering handle 21 is connected to the upper end of a steering bolt 22 rigid with the truck 16 and projects rearwardly over the machine. This handle is utilized to steer the machine when it is working, the steering movement being permitted by reason of the fact that the cable or link 19 connecting the machine with the tractor is pivotally connected with the machine, thus enabling the machine to be steered by the operator so that no patches of surface are left unworked, regardless of whether the tractor is accurately driven and a clevis 23 is preferably formed on the sleeve carried by the rod 11 to permit of the attachment thereto of other machines or im plements, if so desired.

A shaft 24 is carried by the side members 5 and upon this shaft are pivotally mountedaplurality of tool holders 25. Each of these holders is adapted to receive a plurality of tools which are shown as teeth or tines 26, said tines being preferably made of steel of square section set so that a cutting edge is always presented to the work. Each tool holder is provided rearwardly of the pivotal shaft 24 with an extension or shoulder 27 which is connected by means of a link 28 with an operating lever pivotally mounted on shaft 29. Each lever consists of a short arm 30 to which the link 28 is connected and a long arm 31 which preferably carries a weight 32 to assist in balancing the lever and to hold the tools in horizontal or inoperative position when the lever is swung forwardly to the full line position shown in Fig. 2. Hand grips 33 are provided on the weights to be grasped by the hands of the operator for moving the levers. The tools are held in adjusted po sition in the holders by wedges 34 and said tools are preferably pointed at-each end so that they may be reversed or turned end for end, if desired. When the counter weighted levers are in forward position, as shown in Fig. 2, the tines are thereby raised to horizontal or inoperative position and when the levers are in rearward position, as shown in dotted lines, the forward ends of the tines are lowered into operative position as shown. I

In order that the angle of the tines or tools may be adjusted or varied, depending upon the character of the surfaces being worked, I have provided novel adjusting mechanism which adjustably limits the downward movement of the cutting ends of the tools. To this end I have provided a transversely extending rod or shaft located above and slightly to the rear of shaft 24:. Upon the shaft 35I have slidably mounted a pair of annular buffers 36, each having a plurality of shoulders varying in diameter from one end of the buffers to the other. These buffers are held in adjustable posit-ion longitudinally of the shaft by set screws 37. hen it is desired to adjust the tools to a minimum depth and maximum angle with respect to the surfaces being worked, the buffers are adjusted longitudinally of the shaft until the largest shoulders are in the path of the extensions 27 which project rearwardly from the tool holders as previously described. The tool holders when moved by the counterweighted levers to lower the forward ends of the tines, will assume the positions shown in dotted lines in Fig. 2 with the extensions 27 abutting against the largest shoulders of the buffers. Should a change in the angle of out be desired the buffers are moved along the shaft 35 to bring the larger shoul ders beyond the path of the extensions 27 and smaller shoulders of the desired size into position to be engaged by the ext'en sions. It will be obvious that a greater tilt ,of the tool holders will now be permitted and the forward ends of the tines will cut deeper into the surface being worked. Surfaces of various characters require different adjustments of the tools and the range of adjustment may be increased as much as desired by providing buffers having the required number of annular shoulders of the proper size.

It is believed that my invention and many of its attendant advantages will be understood from the foregoing without further description and it will be obvious that various mechanical changes in the size, shape, proportion and arrangement of the various parts may be resorted to without departing from the spirit of the invention or sacrificing any of the material advantages thereof.

What I claim is:

1. In a road scarifier, the combination of a frame, a plurality of tool holders pivotally mounted in said frame, tools carried by said holders, means for tilting the holders on their pivots to raise and lower the ends of the tools, and bufiers positioned in the path of said holders to limit the lowering movement of the tools, each of said buffers comprising a plurality of cylindrical sections of different diameters, said buffers being adjustably mounted tovpermit a desired cylindrical section to be interposed in the path of a holder.

2. In a road scarifier, the combination of a frame, a plurality of tool holders pivotally mounted in said frame, tools carried by said holders, means for tilting the hold-.

ers on their pivots to raise and lower the ends of the tools, a shaft mounted in the said frame adjacent the said holders, and a plurality of buffers, each formed of a number of cylindrical sections of different di ameters mounted on the said shaft and adjustable longitudinally thereof whereby the cylindrical section of desired diameter may be positioned in the path of a holder to limit its tilting movement.

NORMAN DE IVIND.

itnesses:

IRA J. lVILsoN, M. A. Kinbni.

Copies of this patent may be obtained for five cents each, by addressing. the Commissioner of Patents,

Washington, D. G.

Images