US888864A - Road and process of making same. - Google Patents

Description

PATENTED MAY 26, 1908.

B. N. BEARD. ROAD AND PROCESS OF MAKING SAME.

APPLICATION FILED JAN. 29, 1908.

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BENNETT N: BEARD, or

PATENT cr me.

SHELTON, CONNECTICUT.

ROAD AND PROCESS OF MAKING SAME.-

. No. 888,864. Specification of Letters Patent. Patented May 26, 1908.

Application filed January 29, 1908. Serial No. 413,271.

To all whom it may concern:

Be it known that I, BENNETT N. BEARD, a citizen of the United State s residing at Shelton, county of F airfield, State of Connecticut, have invented a new and useful Road and Process of Making Same, of which the following is a specification.

This invention relates to the making of the class of roads known generically as macadam roads; that is, roads having an n er stratum of small broken stone or gravel ying upon either a soft or hardsub-stratum.

I have found in ractice that an inexpensive, smooth and re atively' durable road may be produced by placing an upper stratum of small broken stone or gravel upon any suitable subestratum, top dressing with sand to fill the voids and then grouting with a thin mixture of water and cement held in mech anical suspension and sprinkled upon the surface, the Water causing the cement to fill the interstices of the up er layer and the settin of the cement pro ucing'a hard, firm anr very durablesurface. And I have found that an exceedingly durable high-grade road may be made by first laying a sub-stratum of relatively large stones with the voids filled with sand and placing thereon an upper stratum consisting'of gravel or relatively and grouting as before.

small broken stone, top dressing with sand It is of course well understood that cement if allowed. to set roperly makes a very hard and durable roa bed, but that as cement is ordinarily used, that is mixed with broken stone or'gravel and their spread upon the road bed and rolled, it becomespartially set before the spreading and rolling operations are completed and the hardness and dura bility of the road bed is seriously impaired;

in other words, in order to secure the best results from the use of cement in road making it is necessar that-thrrcementb'e pla'ced" on the. road .bed immediately after mixin and that the' road bed remain-undisturbe until the cement is set, This can only be effected by mixing thecement as it is used and allowin it to remain undisturbed on the road be ".1 The object of the present invention is to produce an inexpenslve, smooth, hard and durable surface for either op dressed reads,- so called, or for deeply l 'd macadam or Telfor-l roads; in other ords, to producean 5 inexpensive, smooth and hard surface" for" either Well-laid or relatively inexpensive roads.

The drawing is a cross section illustrating a plication of my invention to the making 0 a high grade road.

10 denotes a substratum of relatively large stones, 11 sand in the voids between the stones or gravel, 13 a top dressing of sand and 14 agrouting of water and cement in mechanical suspension which is sprinkled. upon the surface.

In carrying out my novel process as ap plied to top -dressed roads, the road isiirst made smooth and rolled in the ordinary cement held in mechanical suspension, so that there can be no setting of the cement until it is delivered upon the surface of the interstices in the upperstratum and the mode Ofplacing the cement upon the road permitting it to set undisturbed, thereby reducing the best possible results in the east expensive manner.

When it is desired to apply my novel process to the making of high grade roadsfa substratum is made of relatively large stones with the voids filled with sand. An upper layer of gravel or small broken stone is then placed thereon, which. is top-dressed with sand and the road thus prepared is grouted by sprinkling the surface with a thin mixture of water and cement held in mechanical suspension.

A very firm and durable foundation upon whichto lay an asphait, brick or wooden 'BlEERIpaVement may be'formed in substantially the same manner; the preparation. of v the sub-stratum not being an essential part which is the grouting of the upper stratum ,with a thin mixture of Water and cement held in -mechanical suspension. 1. have found in practice that my novelprocess, ow-

stones, 12 an upper layer of relatively smallthe surface with a thin mixture of Water an road, the water causing the cement to fill the 3 of the invention, the essential feature of int ing to the fact that the cement is allowed'to.

set under the best conditions possible, produ'ces a smooth and waterrtight surface for either a pavement foundation or a road, that has an mherent'durability far in excess of 5 consists in large stones, filling the voids with sand, then any type of surface heretofpre roduced and which when applied to a well-laid foundation vproduces a roa way that is practically indestructible foralongtime. '5 Having thus described my invention 1' claim: I i

1. The process of making roads, which consists in preparing a sub-stratum, then placing thereon an upper stratum of rela- 10 tively small stones, then top-dressing the laymg an upper stratum of relatively small stones, placing thereon a top dressing of sand and then grouting with a thin mixture of small stones, a top Water and cement held in mechanical 'suspension and delivered upon the surface.

3. A road, consisting of a sub-stratum, an

- upper stratum of relatively small stones, a

- top dressing of sand and a grouting of water w and cement held in mechanical suspension.

4. A road, consisting of a sub-stratum of relatively large stones, a dressing of sand for filling the voids, an u(pper layer of relatively grouting of water'and cement held in mechanical suspension.

In testimony whereof I afiix my signature,

in presence of two witnesses.

BENNETT N. BEARD.

Witnesses Y A. M. WOOSTER,

S. W. AT ERTON.

ressing of sand and a

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