US1061296A - Wood-pavement. - Google Patents

Description

v H. G. JENNISON.

Woon PAVEMENT. APPLICATION FILED APB.17. 1012.

` 1,061,295 Patented May13,1913.

UNiTED sfra'rns PATENT UFFICE.

HARRY G. JENMSON, OF TOLEDO, OHIO.

WOOD-PAVEMENT.

To all f whom t may concern:

Be it known that I, HARRY G. JENNISON, a citizen of the United States, residing at Toledo, Lucas county, Ohio, have invented new and useful lVood-Pavements, of which the following is a specification.

lhis invention relates to foothold provision and expansion take up features of pavement.

This invention has utility when embodied in a wood blockpavement.

Referring to the drawings: Figure` l is a transverse fragmentary View of a pavement embodying the invention; Fig. 2 is a plan view thereof; Fig. 3 is 'a perspective viewyof one of the blocks; and Fig. l is a fragmentary view showing the expansion take up.

Between the curbs 1' are disposed the blocks 2 having the upper face thereof ex- 2 Eose' the end of the grain of the wood, the

locks being laid to break joints. On one of the sides of the blocks herein shown as a longer side are integral extensions or parallel ribs 3, while upon anadjacent vertical side is shown a similar vertical rib or extension 4.. Theseintegral ribs 3 and it are of such minor extent asv to the blocks as to provide spacing means between the blocks affording desirable foothold for horses and thus rendering the pavement less slippery, especially when impregnated with a preservative say some hydrocarbon product.

.ln the'laying of the blocks as shown in Fig. 2, the transverse expansion or take up is taken care of by the spacing extensions 4t while the longitudinal expansion take up cared for b the extensions or ribs 25. ln practice as t lese ribs 3 are subjected to compression strain due to expansion of the block on account of temperature change or varia` tion in moisture content, they are crushed or reduced in size as shown by ribs 5 in Fig.

Specification of Letters Patent. l

'Application led April 17, 1912. Serial No. 691,439.

Patented May 13, 1913.

l, while the similar. action as to the trans* verse expansion take up acts upon the ribs 4 to crush them as shown in rlb t5, Fig. 4,

Accordingly by the laying of these blocksV 2 upon a concrete or other proper foundation there is an open-work pavement with crushable ribs integral with the blocks disposed in spacing relation therebetween, which spaces may be filled with tar or sand if desired. The erushable or compressible nature of the wood, is such that upon release of the strain, there maybe some recovery tending toward original spaced relationin practice, an elasticity is thus given to the pavement grouping overthat of block pavement having the sides directly abutting. In this rectangular block structure, the lines of expansion are taken care of most effectively in the two directions perpendicular to eachv other` i What is claimed and it is desired to secure by l'ietters latent is:

l. A pavement coniprising wood blocks with the grain ol the wood of the blocks extendingin one direction, there heilig wood spacing means for the blocks having the grain of the wood of the spacing means extend in the same direction as the grain of the wood of the blocks.

2. 'l`heco1nbination with a wood parsing block provided with an integral wood project-ion. extending `in the direction of the grain of the block along' a vertical side of the bleek, of a second block spaced from the first by said projection.

lin testimony whereof 4l hereunto set my hand in the presence of two witnesses.

HARRY (i. JENNI'SON.

W i t nes-ses:

(l. lil. llamen, (no. E. Kimi.

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