US1636113A - Pavement - Google Patents

Description

Ju 19, 1927. V

i H. D. STREATOR,

PAVEMENT Filed Sept. 22, 1925 INVENTOR BY finuy D. j z/jgfor v Patented July 19, 1927.

HENRY D. STREA'I'OR, OF GALESBUBG, IICHIGAN.

PAVEMENT.

Application fled September 82, .1925. Serial .No. 87,818.

The objects of this invention are:

First, to provide a pavement containing .in its composite structure all of the advantages of aconcrete pavement and at the same time all the advantages of an asphalt pavement.

Second, to provide such .a .stnudiune in which a topping can be readily renewed.

Third, to provide such a pavement in which ample provision is made for expan- SlOIl.

Fourth, to provide such a pavement which is fully reinforced and at the same time can be readily repaired.

Objects pertaining to details will appear from the detailed description to follow. The invention is defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is illustrated in the accompanying drawing, forming a part of this application, in which:

Fig. 1 is a perspective view of a section of pavement, with parts broken away to show details of construction and arrangement.

Fig. 2 is an enlarged detail sectional view through a complete section of the pavement, taken on line 2-2 of Figs. 1 and 3, looking in the direction of the little arrows at the ends of the section lines.

Fig. 3 is a perspective view of one of my improved foundation blocks showing the projecting reinforcing bars and the special dovetail groove form of the top.

Fig. 4 is an enlarged detail perspective view of the reinforce connecting means between the blocks, a part of the sleeve clip 7 being broken away.

In the drawings like parts are identified by the same numerals of reference throughout the views.

Considering the drawing, 1 is an individual foundation block substantially cubical in form with a bottom flange 2. For ordinary pavement work these blocks are about one foot square on the base, with the flange projecting substantially one inch and being substantially two inches thick. The upper face of these blocks is provided with dovetail ribs 3 formed by dovetail grooves 4 for receiving the asphalt topping. Reinforce bars 5 are disposed crosswise through the body of the block, the ends projecting substantially, two' inches, as seen in Fig. 3. These are retained and located centrally by spot weld and by the hair-pin reinforce 6 embracing the Same at the crossing point. The ends are bevelled symmetrically, as shown, and fit together to. form a close it tidiagonal splice.

he blocks are laid in the pavement on any suitable foundation, which maybe gravel, grout, or the compacted ,and level roadlbed of any material. The blocks are slightly spaced, preferably by a piece of thin metal which isremoved after the block is placed. This facilitates access of moisture to the concrete, which is very desirable. A

cover strip 91 of paper or other material is put over the crack between the blocks.

The projecting ends of the reinforce 5 are disposed side by side and the clip 7 is closed around the same, as seen in Fig. 4 and in section in Fig. 2. It is possible to form the clip 7 and crowd the ends of the reinforce into the same, but preferably the clip 7 should be closed around the projecting end with a tight engagement with an appropriate tool.

When the foundation blocks have been thus laid, the asphalt-i0 topping is poured onto the pavement,forming the top layer 8 and downwardly projecting engaging cross ribs 9 which embrace theclips 7. The result is that all the foundation blocks are effectively interlocked and retained so that they cannot I be displaced and can expand and contract without becoming detached from the concrete base. At the same time when it is desired to open the pavement or to repair the same for any reason, by simply cutting away the asphalt top a section can be removed and, further, it can be readily and accurately replaced. Also, when the top layer wears down, it is possible to scrape the same down to the foundation blocks and apply a new layer in an effective and satisfactory manner.

I have shown my improved foundation blocks cubical in form. They may be of various shapes. It is clear they will be effective in this relation if they are not provided with a reinforce, although the particular reinforce I provide locates the same effectively-and serves as a binding means for the entire section, and at the same time is very accessible and readily repaired. The block will be effective without the dovetail groove but is especially effective with the same in view of the downwardly projecting engaging portion 9 between the blocks.

This projection can be varied in thickness and serve its purpose. I show ample thickness for the severest of conditions.

I desire to claim my invention broadly, as Well as specifically, as pointed out in the appended claims.

Having thus described my invention, What I claim as new and desire to secure by Letters Patent is:

1. In a' pavement the combination of afoundation made up of spaced cubical blocks With flanged bases and dovetailed grooves at the top, cross bar reinforcements in said blocks, the ends of Which reinforcements proj ect and extend substantially from one block to another and form diagonal splices, a retaining clip embracing the ends of the reinforcements, and asplialtic topping With eX- tensions into the spaces between said blocks embracing the said clips and reinforce ments, coacting as specified.

2. In a pavement the combination of a foundation made up of spaced cubical blocks With flanged bases, cross bar reinforcements in said blocks, the ends of which reinforcements project and extend substantially from one block to another and form diagonal splices, a retaining clip embracing the ends of the reinforcements, and an asphaltic topping With extensions into the spaces between said blocks embracing the said clips and reinforcements, coacting as specified.

In Witness whereof I have hereunto set my hand.

HENRY D, lTREATOR.

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