US1226637A - Road-surfacer. - Google Patents

Description

W. S. BUNKEH.

ROAD SURFACER.

APPLlcATmN FILED FEB. 25. |915.

1,226,637. Patented May 22, 1917.

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W. S. BUNKER.

ROAD SUBFACER.

APPLICATION FILED FEB. 25| |916.

1,226,637. Patented May22,1917.

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narran `sra 1 ontarien WARD S. BUNKER, OF WAKESHA, WISCONSIN.

ROAD-sunraonn.

Speccaton of Letters Patent.

Patented May 22, 1917.

Application led February 25, 1916. Serial No. 80,332.

"v'ide a road working implement of rigid,

unyielding construction with converging metal scraper blades or wings fixed rigidly in their angular relation to each other, though ,vertically adjustable front and rear to enable it to scrape more or less of the surface of the road into the ruts or hollows thereof and to `enable it to be carried in an inclined position when desired to surface a graded or crowned road.

Another object `of the invention is to perfect details ofconstruction of such a road surfacer.

wWith the above and other objects in view the invention consists in the road surfacer as herein claimed.

teferrng to the accompanying drawings, :in which like characters of reference indicate the same parts in the different views,

Figure 1 is a perspective view of a road surfacer ctnistructed in accordance with this invention; j i

F 2 is a central longitudinal sectional view thereof;

Fig. 3 is a plan view thereof;

Figli is a sectional view of the rear end thereof; and,

Fig. 5 is a scraper bar.

ln these drawings 10 indicates a bent or arched tubular axle on which wheels 11 are mounted and to the center of which is secured a reach 12, the front end of which detail sectional view of the j may be connected with the front axle l3nt any farm wagon and secured by the king bolt 1dthereof, thus taking the place of the reach of such wagon. Suitable hounds or braces 12 connect the reach with the aXle 10 to rigidly brace it in place thereon. Mounted in suitable brackets on the reach 12 are adjusting levers 15 and 16 for the front and rear ends of the` scraper, each lever carrying a segmental grooved pulley 17 to which a supporting chain 18 is secured and passes downardly through yopenings in the reach, while locking means on saidievers engage notched sectors 20 on the brackets 17 to lock the levers in their adjustments.

The scraper which is carried beneath the reach and is connected to the chains 18 cornprises a pair of bars arranged obliquely to the line of draft with their divergent ends foremost. Each of these bars is formed of an upper angle iron strip 21 with a broad vertical face and its horizontal flange riveted to the horizontal flange of a smaller angle iron strip 22 the full length thereof,

such smaller angle iron strip 22 having a,

removable face formed of a strip of sheet metal 23 secured thereto, and preferably 1n the same vertical plane with and abutting against the vertical face of angle strip 21.

Near their front ends the scraper barsv or wings are connected by a channeliron brace 24 extending transversely across the device, and thel connections between this brace and the scraper bars are rigid7 being preferably formed by angle iron brackets 25` riveted to the opposite sides of the upstanding flanges of angle strips 21 and bolted to the cross brace 24. Near their rear ends the scraper bars are similarly connected by a shorter cross brace 26 and the chains 1S are connected to the cross braces 2d and 26 respectively. In addition to the chains 1S there are guide chains 27 and 28 connecting the cross bars 2d and 26 respectively near their ends to suitable hooks 29 on the reach. These chains serve to guide the scraper and keep it centered on the line of draft though greater obstacles may be encountered by one scraper blade than by the other. Draft chains 30 connect with. the upper angle iron 21 of each bar of the scraper a short distance behindthe connections with the cross bar 24 and extend obliquely forward where they connect with an equalizing ring 31. A

,coupling chain 32 has one end connected with the equalizing ring while the other end is passed beneath the axle 13 and around the tongue 33 just in front of the draft rod 34 thereof, and has a hook 35 on its end to be engaged with its intermediate portion so as to form a loop surrounding the tongue.

In operation the rigid scraper frame resting on the surface of the road is drawn by the traction chains 30 and is held in place against lateral deflection by the guide chains 27 and 28 so that even though greater resistance may be opposed to the forward travel of one scraper blade than to the other, auch resistance will be overcome and the sun face scraped to a smooth even road-bed without disturbing the line of travel of'the device. The frame being rigid neither scraper bar thereof is capable of movement independent of theyother, yand consequently will not drop into holes or depressions*intheroadway to increase the irregularity, but such material as is loosened thereby will be drawn toward the center of the roadway and deposited in such depressions, all surplus material being left in the center of the road. The front lifting lever 15 is used to raise the surfacer whenmoving from one place to another and for turning, while the rear lifting lever 16 is used at such times, and also to govern the amount of dirt brought to the center. If at any time the surfacer is gathering enough dirt to leave a ridge in the center, the rear end thereof is raised sufficiently to allow the dirt to distribute under the bars, thus making 'a perfect grade.`

The construction of the surface frame is entirely of metal and the scraping blade 23 whichis the only part subject to wear is easily removable and is so arranged that it may be reversed end to end so as to increase the durability thereof. The angle iron construction ofthe scraper bars with the lower f receive its draft therefrom, but it bears with its full weight upon'the surface of the road and is drawn directly from the tongue of the vehicle through the draft chains 30 and 32, the guide chains 18 serving to prevent lateral `1 movement and to compel the blades to travel in the line of draft.y One or both of the hand levers may be operated to give the desired v inclination to the scraper frameV at timesy and to lift the scraper frame free from the ground when it is out of operation, as when traveling from place. to place, or when turning.

What I claim as new and desire to secure by LettersvPatent is:

1. A. road surfacer, comprising a rear axle, a reach thereon adapted for connection with a front axle, front and rear lifting means on the reach, and a rigid frame having converging scraper bars, the front and rear ends of said frame being connected to the front and rear lifting means respectively.

2. A road surfacer, comprising a rear axle, a reach thereon adapted for connection with a front axle, independent front and rear lifting means on the reach, a rigid frame having converging scraper bars, the front and rear ends of said frame being connected to the front and rear lifting means respectively, guide chains connecting the front and rear ends of the frame with the reach, and draft chains connected with the scraper bars near their front ends and connected together and having a loop to pass around the tongue of the front axle.

3. In a road surfacer, a rigid scraper frame comprising a pair of converging scraper bars, each consisting of an upper angle iron and a smaller angle iron secured thereto with its inner face offset from the inner face of the upper angle iron, and a removable scraper blade secured to the vertical flange of the lower angle iron and abutting against and flush with the inner face of the upper angle iron, angular brackets secured to the inner and outer faces of the upper angle iron, and cross bars secured to said brackets.

4. In a road surfacer, a scraper bar, comprising an upper angle iron, a smaller lower angle iron secured to the horizontal flange at the lower edge thereof and having its vertical face offset from the vertical face of the upper angle iron, and a scraper blade removably secured to the vertical flange of thel lower angle iron with its inner face Hush with the inner face of the upper angle iron. In testimony whereof, I aiix my signa-V ture, in presence of two witnesses.

WARD S. BUNKER. Witnesses:

J. M. DERTHICK, KATHERINE HOLT.

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

' Washington, D. C.

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