US349645A

US349645A - Feancis v

Info

Publication number: US349645A
Authority: US
Publication date: 1886-09-21
Anticipated expiration: 1903-09-21

Description

' (No Model.)

.F.'VyGRBBNBg CONSTRUCTION 0F CONCRETE PAVBMENTS. v No. 349,645. 'Patented sept. 21,1886.y

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N. PETERS lfm- UNITED STATES PATENT OEEICE.

FRANCIS VRGREENE, OF NEW YORK, N. Y., ASSIGNOR TO THE BARBER I ASPHALT FAVING COMPANY, OF WASHINGTON, D. C.

CONSTRUCTION OF CONCRETE PAvEMi-:NTS-

SPECIFICATION forming part of Letters Patent No. 349,645, dated September 21, 1886.

Application filed March 1Q, 1886. Serial No. 194,991, (No model.)

To all whom it may concern.-

Be -it known that I, FRANCIS V. GREENE, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in the Construction of Concrete Pavements, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to improvements in concrete pavements.

The object of my invention is to prevent the cracking or breaking of concrete pavements incident to thermal changes; and my invention consists in embedding in the body of the pavement wire-netting or similar material which will form a bond and prevent the pavement from separating into seams `or cracks.

My invention is specially intended to prevent the cracking or breaking of what is commonly known as asphalt or other bituminous pavements, but may be applied to other kinds of pavements which are laid in a continuous sheet or unbroken mass.

In asphalt pavements, especially where large areas are to be covered with an unbroken mass or continuous sheet, great diiiiculty hasheretofore been experienced in preventing the separating or cracking of the pavements by the contractions and expansions ineident to thermal changes, and in wide streets, and at the crossings of streets the pavements are frequently rendered almost worthless by the thermal changes of. one season, examples of which can be seen on the wide avenues and streets of Washington, District of Columbia.

In the drawings, Figure l is a top or plan view of a pavement, showing the different layers and the wire-netting. Fig. 2 is al sectional view of the pavement,showing the wirenetting embedded in the wearing course or top layer of the pavement.

A indicates the base of the pavement, which is made of hydraulic concrete in the usual manner, and of anydesired thickness.

B indicates the top or wearing layer or sur- I face of the pavement, and is composed'of asphalticcement or any other suitable material, but by preference the asphalt cement as laid by Barber Asphalt Paving Company.

C indicates the layer of wire-netting which is embedded in the asphalt top B and serves to hold the same together, and thus prevent the pavement from cracking.- The wire-netting which I prefer to use is open mesh, such as is made and used for fences, the wire being galvanized or not, as may be most desirable.

In laying the pavement a portion of the asphalt-cement top is laid on the hydrauliccement base A in the form of a sticky powder, but not rolled or compressed. The wire-netting is then embedded on the top of this layer of asphalt cement. The balance of the asphalt top is now put down over the wire-netting and heavily rolled so as to thoroughly consolidate and unite this mass of asphaltic cement or concrete with the wire-netting embedded therein. 'Some little distance below the surface this will effectually prevent the breaking 0r cracking of the roadway and make a durable l and substantial pavement.

As before intimated the wire-netling is intended to be used where large areas are to be covered with an unbroken mass or continuous body of'hydraulic or asphalt concrete, so as Ato prevent the same from being rent or cracked by the contractions and expansions of the pavement incident to thermal changes; but I do not confine myselfto such, as it can be used to advantage in all pavements and for foot-walks or 'drives in parks where concrete pavements are generally affected by the upheavals ofthe frost.

I am aware .that wire-netting has been used between layers of felt in the manufacture ota roofing fabric, and that emery-wl1eels made of a, plastic material have been strengthened by wire-netting, and such I do not claim.

Having thus described my invention, I claim- I. A concrete pavement having embedded therein a layer of wire-netting or similar material which will prevent the sam'e from cracking, as set forth.

2. An asphalt concrete pavement or footwalk having wire-netting embedded in the top layer and some little distance below the 'wearing surface, as set forth. A

In testimony whereof I aftix my signature in presence of two witnesses. Y

FRANCIS V. GREENE.

Witnesses ROBERT E. MORRIS. A. L. BARBER,