US100134A - Improvement in street pavement - Google Patents

Description

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EDGAR M. rownnn, or NEW Yoan, N. Y., AssIeNoR 'roHENR-Y e." y MCGONEGAL, or 'SAME PLAGE.

Letters Patent No. 100,134, dated .February 22, 1870.

IMPROVEMENT IN STREET PAVEMENT.

The Schedule 'referred to in these Letters Patent and making part of the same.

To all whom tt'may concern .tion of the saine, reference heilig had to the drawingsthat accompany and form a part of these specifications.

Figure l, view in perspective of a section of my pavement laid.

Figure 2, a plan of the upper face ofthe blocks and ofthe dividing strip.

Letter A represents the foundation upon which my structure rests, and this may be of wood, a flooring, whose plank lay longitudinally tothe street, or of any other suitable material or l'orln, even the roadway of earth itself properly prepared.

Letter B, blocks of wood', with plane sides, meeting each other at right angles, so placed that the line ot' the grain of the wood shall be vertical, measuring in depth six inches or so, in thickness about three inches, and in the other direction as economy requires.

Letter C, Wooden strips, say common boards, in width slightly less than the height ofthe blocks B, and in thickness one inch or more7 even to two inches.

These strips have uniformly distributed along their two opposite faces numerous cone-shaped concave grooves in arrangement and form 'as fully illustrated in the drawings, being blpad at the top and in depth about half the thickness of the strip. (See tig.` 2.)

Letter E, the grooves in the face sides of the dividing strips C.

These grooves, it will be observed, are not placed opposite to each other inthe two opposing sides, but so that there should be a plane ungrooved surface upon the opposite side to eachv groove. (See the drawings) The object of my invention is not only to provide a cheap and durable pavement, but also to secure a better traveling surface, especially as alfording a desirable and firm footing for horses, that they may not slip, and also to provide for the expansion and contraction ot' the blocks.

My invention consists in making use of dividing strips between alternate rows of the perpendicular blocks, which, standing on edge, rise nearly or quite as high as the said blocks, and are provided with uumerous concave cone -shaped grooves, as hereiubefore specied. f

When blocks of wood like these presented herewith are placed Ato form a pavement, the blocks laying one close to another ou all its perpendicular sides two very serious defects present themselves, viz: the rising up in places more orless occasioned by the expansion of the said blocks from moisture absorbed, and secondly the too great uniformityorsmoothuess of the traveled I surface. f

Did I simply use a board without cutting away any l part there/onbetween the alternate rows of blocks, I

would remove this above 'latter-.mentioned imperfection, for the upper edge of said board used as dividgravel, and the slightly-yielding nature of the struc@ ture between alternate rows 'of the vertical blocks proves sutticient for the expansion of the latter, and lmy pavement remains as fixed and iii-n1 as could bev desired.

These grooves E may be narrow and more numerons, or each wider and the number less, as economy in production and experience in use may suggest. In depth they should be about haltthe thickness of the b'oard or plank on which they are formed'.

I do not claim the vertical grooves in themselves, but only as applied to the dividing strip O.

That I claim as of my invention, and desire-t0 se-` cure by Letters Patent, is

lhe dividing or vintervening strips 'C when'grooved substantially as specified, and used in connection with theA blocksB, for the purposes set forth. v

In testimony whereof,I have signed my name to this specification in the presence of two subscribing wit'-v nesses.. 4

EDGAR M. FOWLER.

' Witnesses: i 'Y JouN M. GAEFRY,

Trino. P. ANDERsoN. e

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