US1707372A - Road construction - Google Patents

Description

April 2, 1929. c. STENBOL 1,707,372

ROAD CONSTRUCTION Filed Nov.21; 1927 2 Sheets-Sheet. 1

- 'I QQL JI Awe-Mme. 6341a 575M901.

i with the gauge of vehicle wheels.

line 6-6 of Figure 5.

Patented Apr. 2, i929.

* UNITED STATES PAT ENT or ice] CARL s'rENBoL, oFsAU-nr stun. MARIE, oNTARI oANAnAf noAi) CONSTRUCTION.

, Application filedNoverhber 21, 1927.: Serial No. 234,825."

This invention relates to improvements in road construction and more particularly to improvements in roads and highways to provide a permanent wearing surface for the wheels of vehicles and to definitely regulate trafiic so as to assure .the'greatest possible comfort and safety 'forthe'driver.

In existing construction of roads and higl'zways it has been found that gravel or crushed stone "will not make a permanent road surface without bonding with cement,

or the like in view of the' inasphalt, tar,

continuous automobile trafiic.

creased and The surface highway extends'over the entire width of the roadbed whereas the Wheel contact on the surface is comparatively restricted and runs in definite lines orhands. Consequently if these lines or bands are formed with a permanent wearing surface traffic will be definitely regulated, being automatically give strength, flexibility and to withstand wear from corrosion and abrasion. A high carbon steel such as is used for ran-way ra ls 'may be preferably used from an economical point of view Referring now-tothe drawingsin which like characters of reference indicate correspending parts in each figure,

Figure 11s a perspective View of a section of roadway fitted with my improved metallic bands or strips. v

Figure 2 is a section on the line 22 of Figure *1 showing the bands sunk in the roadbed. 3

Figure 3 is a sectional detail throughone of the strips.

Figure 4 is a plan viewof the roughened or corrugated surface of a strip; Figure 5 a-plan view ofthe stripat a danger point such as a railway crossing.

Figure 6 is an enlarged section on the Figure 7 shows a single track-road at a 'in Figure 9.

of'the present or permanent,

plates or bolts,

cause much inconvenience. V It will be noted that the plateQO maybe danger point such as curves, around rocks;

or; buildings or over hills. v

Figure 8 shows a section'of a road for heavy'trafiic with four tracks. 7 "Jdigure' 9 is a detail of the sections or strips laid around curves, and formed in short sections. V

Figure 10 shows the wearing strips laid around a curve of longer sections than those Figure 11 is a'section of the joint plate' on lme 1l-11 of Figure 3.

Referring now more particularly to the drawings A indicates a section ofa road or ,permanent highway of ,well known construction' in which are'laid' the metallic I tracks or strips 10 and ll'formed with their top surface roughened or corrugated in any well known manner as at 12 (see Figure -These trackmembers are countersunk in the roadbed so that the roughened surface 12 will be flush with the surface 13 of the road,;

the dimensions being determined" by. the

traflic that is to be carried. H The under side of these track members is curved as a't'lt so as to allow the band being thicker in the centre than towards the edges. It also provided with a rib or ribs 151 1111- ning longitudinally on the under side. These bands or tracks 10 and 11 will be manufactured-in suitable lengths for shipment' and handling and laid together in the roadbed as at 16, the joints being made with as hereinafter more fully described.

Two of these trackmembers form one track and are held to'gauge by suitable, tie

bars '17 buried" in the roadbed 18. 'Joint "plates 20 on the underside n-f the sections will hold the whole track inalignment with the road.

Referring more particularly to Figure 1,' a

the 'track members lO-and 11" are formed in twofsections joined together by means of a joint plate 20 and tiebar 1 7 sunk in the 'roadbed, As the track, members 10 and 11 are to some extent vertically flexible any heavin or settling of the roadbed will not folded (see Figure 3) as at 21 into the' dee j p'ression or recess 22 formed in the track member 10 or l'lxThe rib 15 is formed; with a rolled wearing plate and runs longitudinally the fuIIlength of the track, its purpose being to reinforce the track without adding an excess of material and alsov to form an anchor in the roadbed to hold the track to gauge and to the line of the road.

The member 20 is preferably, as illustrated, bolted or riveted to the tie bar 17.

In Figure 5 are disclosed track members laid at the approach to a railroad crossing 28 or other danger poihtswhere the driver is required for his own safety to stop, look, and listen. Inthis construction the track members are provided, in addition to the roughened surface, with ribs 24 integral therewith (see Figure 6) to more effectively engage with the wheels of the vehicle and to set up a noticeable vibration thereby warning drivers automatically of approaching daniger, These ribs 24 may be formed in and part of track sections 10 and 11 or made separately and bolted or riveted to the upper surface of the track sections 10 and 11. v

Figure 7 shows a single track road at dangerous points such as curves, around rocks or buildings or over hills where the driver has a very limited view of approach ing vehicles. The single track is laid to the right from both sides of the danger point and carried on for sufficient length until the danger is passed.

Figure 8 discloses a method oflaying the tracks for very heavy traffic including four tracks on which a slowdriver on the right hand centre track would have to turn onto the curb or slow track to allow the faster driver to pass providing the greatest comfort and safety.

Figures 9 and 10 show a modified form of laying the track in a plurality of sections 25 for curves.

I An alternative to the joint illustrated in Figs. 3 may be made by simply bolting or riveting the joint plate 2.0 to track sections 10 and 11 omitting recess 22.

As many changes could be made in the above construction and many apparently widely different embodiments of my invention within the scope of the claims, constructed without departingfrom the spirit or scope thereof, it is intended that all matter contained in the accompanying specification and drawings shall be interpreted as illustrative and not in a limiting sense.

What I claim as my invention i 1. Road construction including spaced longitudinally extending rails formed in sections countersunk in the roadway, said rails being provided on the underside with a continuous reinforcing rib, joint plate means for clamping the sections together, and retaining means in the form ofa tie bar rigidly connected to the afore-mentioned means. I v

2. The invention according claim 1 in which recesses are formed in the rail sections for engagement with the joint plate.

3. The inventionaccording to claim 1 in which the outer ends of thejoint plate are folded to engage with and clamp the rail sections. I I

4:. The invention according to claim 1 characterized'by the fact that joint plates are provided for the rails and recesses formed in the rails to engage with the folded ends of the joint plates.

5. A roadway having a pair of spaced parallel longitudinally extending rails disposed therein and flush with the top surface thereof, a roughened treadsurface for said rails, side recesses at spaced points in the rails, joint plates sunk in the roadbed adapted to engage with said recesses, and transversely extending means rigidly secured to said joint plates. I 6. In road construction and in combination with the roadway, rail sections formed with a continuous reinforcing rib countersunk in the roadway, joint plates for said sections comprising a fiat base portion with extensions at each end to engage with and clamp a rail, a transversely extending tie bar in the roadbed, means for rigidly secur-" ing the joint plates to said bar, and spaced cross-ribs for the rail sections fect vibration.

In witnesswhereof I have hereunto set my hand.

CARL sT'ENnoL;

adapted to ef-

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