US1737412A - Construction of roads and the like - Google Patents

Description

Nov. 26, 1929.v

L. H. A. DUNKER CONSTRUCTION 0F ROADS AND" THE LIKE Filed may 27, 1926 www@ . strips,

Patented Nov. 26, 1929 PATENT OFFICE LoU'Is HERMAN ALFRED DUNKER, or BIRMINGHAM, ENGLAND CONSTRUCTION 0F ROADS AND THE LIKE Application filed May?, 1926, Serial No. 112,123, and `in Great Britain `July 1, 1925. l I

The present invention has relation to a process of or means for manufacturing a road, more particularly to the surface covering or carpeting of concrete and like foundations, the invention having for its object to provide a surface covering or carpeting having amaximum resistance against wear and which is homogeneous and will avoid creeping and reduce local defects to a minimum. The present means also have the characteristic that when wear takes place, as it must inevitably after constant use, cavities, grooves, 0r the like of small diameter or transverse measurement are constituted and adapted to assist in preventing skidding of the wheels of vehicles.

According to the present invention I provide a reinforcing meshcomprised of a plurality of interengaged or interconnected flat section metal strips disposed with their maj or dimension vertically and adapted to be filled with asphalt, cement, concrete or the like to form a surface covering or carpet of a thickness equal or substantially equal to the aforesaid major4 dimension of the strip.

Such a surface covering or carpet is laid on top of a concrete asphalt or other foundation which may 'be reinforced or otherwise and from which it must be differentiated.

Seeing that the metal strips of the presentsurface covering or lcarpeting have their upper ed es flush or substantially flush with the actua wearing surface of the road, such surface is rendered inevitably tough. As the section of road thus treated iscovered with one continuous interwoven mat of steel it cannot creep or give.

The strip metal may have a major dimension of say 1% and is formed to a zigzag or undulating formation, the respective apices or undulations being united or coupled by rods or like devices passing through perforations therein. Such rods or like devices not only connect the various metal but ensure that the asphalt or other filling will not leave the cavities constituted by the mesh. Certain of these cavities may have a white filling to constitute the wellknown White line fontrafiic guiding purposes.

with asphalt, concrete,

upon such thin layer,

The reinforcement mesh may be laid completely across the road on thefoundation and the filling afterwardsadded; or, alternatively, the covering or carpeting may be formed as a plurality of relatively small mats, each complete in its formation, and adapted to be applied to the road foundation and afterwards consolidated thereon to form the complete carpet or covering.

Inorder that this invention may be clearly understood and readily carried into practice, reference maybe had to theV appended explanatory sheet of drawings, upon which Figure 1 is a plan view of a reinforcement mesh constructed according to one form of the present invention.

Fig. 1EL is a fragmentary similar View as Fig. 1 showing a modification.

Figure 2 is a sectional elevation illustrating a road covering or carpeting according to this invention has been applied.

Figure 3 illustrates in plan view a modified mesh. y

In a convenient embodiment of the present invention I employ lengths of strip metal a of flat section steel (see articularly Figure 2) as for instance 11A A y 116 section and bend these strips to a zigzag formation l(as illustrated particularly in Figure 1). The lengths of zigzag strip are aggregated together in the manner shown with the apices in engagement, and are held in such position by rods b which pass through perforations in the respective apices. These rods b may be arranged variously (as shown in the Figure 1) but it is desirable to ensure that some part of a rod spans or projects into each cavity constituted by the mesh.

The reinforcing mesh is laid iatwise upon the concrete or other road foundation .c with its major dimension (shown-particularly in Figure 2) and is filled cement or other desirable filling flush with the top edge of the mesh. Conveniently a-thin layer of asphalt or grouting of'cement may be initially placed upon the foundation,

and afterwards filled.

disposed verticallyfoundation upon which .a surface the mesh embedded lina By arranging the rods b to span or project into each and every cavity there is no possibility of the asphalt or other filling leaving any particular cavity, seeing that it becomes well consolidated with a part of a rod. Certain of the cavities may have a White filling to constitute a white line for traffic guiding purposes, signs, etc.

In lieu of placing the reinforcing mesh upon the road foundation and afterwards filling it, the mesh may be filled to form a plurality of readily transportable mats which' may be placed upon the road foundation and afterwards suitably consolidated by filling the joints with or without connecting the-steel mesh in the different mats.

In lieu of uniting the metal strips by rods b, dumb-bell shaped devices of flat section, such as illustrated at d, in Fig. l, may be employed, or rivets, bolts, pins, etc. of any suitable shape. These devices are passed through vertical slots in the strips and afterwards rotated through 90 degrees. In the modification shown in Figure 3 the strip lmetal a is bent to form a series of channels which are united by corner rods b, whilst in a still further modification (not illustrated), the strip metal may be bent to an undulating or wavy configuration for the purpose of this invention.

The present invention therefore consists in a covering or.carpeting for a. road foun- (lation as differentiated from the foundation itself, which covering or carpeting has a metallic reinforcement extending completely through its thickness in the nature of strip metal or flat section bars, such a surface or covering having considerable wear-resisting characteristics, avoiding all vcreeping and local defects.

What I claim as my invention and desire to secureby Letters Patent is 1. A floor or pavement armoring compris- .lng' separate metal strips bent to zig-zag form, the strips having holes at the corners thus formed, and being assembled on edge with holes of adjacent strips in register and with the top edges substantially flush, Whereby said top edges present a surface adapted, when the assembled armoring isincorporated with and armor the surface thereof, and rods extending through the o enings and holding the strips in assemble position, the rods being of less length than the assemblage, whereby the assembled structure is'flexible and adapts itself to the contour of the surface on which it lies.

2. A floor or pavement armoring comprising separate metal strips bent to zig-zag form,the strips having holes at the corners thus formed, and being assembled on edge with holes of adjacent strips in register and with the top edges substantially flush, whereby said top edges present a surface adapted,

floor or pavement structure, to lie fiushwhen the assembled armoring is incorporated in a floor or pavement structure, to lie flush with and armor the surface thereof, and rods extending through the openings and holding the strips in assembled position, the rods being of less length than the assemblage and the metal strips being of less length than the width of such assemblage, whereby the assembled structure is flexible and adapts itself to the contour of the surface on which it lies.

3. A fioor or pavement armoring comprising separate metal strips bent to zig-zag form, the strips having holes at the corners thus formed, and being assembled on edge by said top edges present a surface adapted,

when the assembled armoring is incorporated in a floor or pavement structure, to lie flush with and armor the surface thereof, and rods of circular cross section extending through the openings and holding the strips in assembled position, the rods beinO of less length than the assemblage, whereby it is flexible longitudinally, and the metal strips being of less length than the width of the assemblage, whereby they may rock or turn around the circular rods, rendering structure flexible transversely.

4. A floor or pavement armoring comprising separate metal strips bent to Zig-zag form, the strips having holes at the corners thus formed, and being assembled on edge with holes of adjacent strips in register and with the top edges substantially flush, whereby said top edges present a surface adapted, when the assembled armoring is incorporated in a floor or pavement structure, lto lie flush with and armorvthe surface thereof, and rods of circular cross section `extending through the openings and holding the strips in assembled position, the rods being of less length than the assemblage, whereby it is flexible longitudinally, and the metal strips being of less length than the width' of the assemblage, whereby they may rock or turn around the circular rods, rendering the structure flexible transversely, the zig-zag strips being arranged in rows, the point of juncture of strips in one row being offset laterally of the assemblage relative to the point ture of strips in an adjacentlrow.

of junc- In witness whereof I have hereunto set my hand.

LOUIS HERMAN ALFRED DUNKER.

Images