US1569741A - Paving block - Google Patents

Description

Jan. 12 1926. 1,569,741 A A. GLIDDEN PAVING BLOCK Filed Nov. 26, 192

I '1 fly/ 0 Inueni'or: Agfved A. Gliddeh M- YM Patented Jan. 12, 1926.

ALFRED A. GLIDDEN, OF WATERTOWN, MASSAGHUSETTS ASSIGN OR TO HOOD RUBBER COMPANY, OF WATERTOWN, MASSACHUSETTS, A CORPORATION OF MASSAOHU- SETTS.

PAVING BLOCK.

Application filed November 26, 1924. Serial No. 752,389.

To all whom it may concern:

Be it known that I, ALFRED A. GLIDDEN, a citizen of the United States, and a resident of WVatertown, in the county of Mid dlesex and State of Massachusetts, have invented certain new and useful Improvements in Paving Blocks, of which the following is a specification.

My present invention relates to improvements in paving blocks designed particularly for use as road or street pavements but applicable as well for sidewalks and floors.

I have found that blocks of a rubber composition form a very desirable paving surface, but these are difficult to apply in a manner to secure a permanent placement, due to the fact that the composition is to a slight degree elastic, compressing under load and returning to initial position when relieved, and the further fact that this composition is of such different character from the supporting foundation.

The present invention aims to provide block of this character which may be readily applied to the ordinary cement or similar base and when so applied will be firmly held against displacement or dislodgment.

It further aims to provide a block or tile which may be applied to other types of supports or bases, without the use of cement, such for example as a wood foundation.

WVith these and other objects in view, the invention includes the novel construction hereinafter described and defined by'the appended claims.

An embodiment of my invention is illustrated in the accompanying drawing, in which:

Figure 1 is a top face view of a block.

Fig. 2 is a bottom face view.

Fig. 3 is a section on line 33 of Fig. 1, and

Fig. 4. is a section on line 44 of Fig. 2.

Referring by reference characters to this drawing the numeral 1 designates the block proper, shown as of rectangular shape (conveniently of the size and shape of a buck) and designed to comprise in its composition rubber and fiber molded to shape and vulcanized to produce a tough non-breakable and slightly elastic or compressible body.

The under side of, the block is provided with grooves or channels 1 which preferably extend diagonally from corner to corner, crossing at the center, into which grooves the plastic cement or the like penetrates when the block is tamped or pressed down, forming a key connection whicheifectually resists anytendency of the block to move laterally in any direction.

To prevent any tipping of the block I provide additional keying means in the shape of members or parts projecting laterally across the grooves and spaced from the bottom thereof.

In the form shown in the drawings such members take the form of bars 2 having angularly turned ends 2* which are embedded and anchored in the block in the process of molding or forming the same, these bars projecting across the channels above the bottoms thereof so that they become completely embedded in and surrounded by the cement of the supporting base.

In order to enable the sam'eblock to be attached to a surface adapted to receive nails or like fastenings, such for example as a wood foundation, I embed in the body of the block at suitable points washers-3, above which are holes 1 leading down from the top surface of the block and alining with the eyes of the washers. When it is desired to' nail the block to a support, nails may be inserted in these openings and driven down, by theaid of a nail set, until their heads contact with the washers, which re sist any tendency to pull the heads through the block.

The openings m y, if desired, be filled with suitable material after the nails are in lace. p If desired the bars 2 could be replaced by a grid which could be laid in the bottom 0f the mold and become embedded in the block so that the cross members of the grid would cross the channels in several places and at different angles.

Having thus described my invention, what I claim is:

1. A paving block of moderately elastic material having grooves or channels in the under face thereof and bars. extending across the channels and spaced from the bottoms thereof, said bars having ends anchored in 10 the block.

2. A paving block having grooves or channels in the under face thereof and relatively narrow keying means bridging said channels, and confined wholly within the 1 plane of the under face, of the. block. a

In testimony whereof I aflix my signature.

ALFRED A. .GLIDDEN.

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