US829293A - Pavement. - Google Patents

Description

No. 829,293. PATENTED AUG. 21, 1906.

P. G. REILLY.

PAVEMENT.

APPLICATION FILED MAR.30.1904.

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t e-Wei; No. Specification of Lett ffistented Aug. 21, 3.506,

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scription of there skflied m m to make and use This izw-s use he evision v intents I I 7 i ich th wesring-surface shell be held at close and permanent bond with the substructure'snd the result a pavement which is quickly and coo nomiosfiy ieid, for dedicte use, sil

"ee to the neaepsits endv In pave ments of s genemi erto known. it

2'5 has been uses to first e foundation of concrete or broken stone. In theletter cese the stone rolled smooth is then coated with. s bituminous cement and the Wearing-sashes added, dependence being 0 pieced. up n the sdhesive {PA 'esof the co ment to s i the Wearing-s11 ce foundation and. to hcid it in place. Where con crete used s foundation, s bituminous cement sometimes over it, as in t e case of hi tousvi'stions above described; out 1 recent 3 so-cslied is us'ost v in posed besmite? some tween the constants and the Wearing-sou its for s g to form e, some between detion end the Wes urfsce.

- L to in tible t sivc q 11d pressure 1 e soutcly m position, but waves or More than one miilion s so 1 tin-- to creep o ne by any omens 2-? iQfQL ed. These ob- .me by my invention herein 5 5 jections are even tent of fixesiendlstsble set out, and. ps

tween snot the Weeringeurfece of any bits missus pevement--e bond which .is perms- 6c nest end not attested. by extremesof temperature o1 comiitions of use.

1 i ention consists in forming the cow erete foundation with a rough surface of prostone depressions; into which the 6 5 Weering-surtsce becomes anchored-end by it is thereby immo'mbly held. in order that the invention may be fuliy understood, the features peculiar to the km 3 proved pevement are hereinafter more fuliy, described and cteimed, and clearly illustrated the accompanying drawings, in which Figure 1 is a View in perspective of a piece of the prepared"foundation, and Fig. 2 is across-section of a completed psvement com 7 5 oodying the invention. v

In the drswingz s, a the curb; b, the sub c, the concrete foundation, and 0 the projec: jagged edges and corners of the stonesiorming the concrete, While e'repre- 8c sents the Wearing-surface.

The ix nproved pavement is .prepslred as follows: On top of s subfo'undetion, after be ing thoroughly compacted, the cement concl'ete foundation is placed, preferably about six inches thick. The stone for this 0011 I crete should, preferably, be such as will pass through :1 threeemdmne-helf-inch ring and not through a two-inch ring. The concrete is mode, preferably, of one port Portland cemeet, two parts send, and six parts broken stone; This results in e dense mo'rte'ry mneture, The concrete is so app o. to t to subm All new 77 but not quite the levet of the top sur "toes of the stone The temping is then, dis- I05 "e: 5 the stones projecting & L to one inch from s eomfos concrete m be ing no voids, and of wt' :1 the projecting stones form on integttei pert, the Word integral being used to convey no the idea that the stones projecting from the body of'the concrete form it component pert innnovlthly in its original position.

uished from stones inserted after" the c oncre to "3::

is mixed. After allowing the foundation to set properly it is swept thoroughly and all loose stones removed ,Whereupon the surface is coated with any good quality bituminous cement, (preferably National Brand No. 1,) and the wearingrsurface of any preferred composition isthenapplied directly thereto. The result is a pavement monolithic in character possessing integrity in a very high degree and absolutely permanent as to position. The waving or creeping so noticeable in ordinary sheet-as halt and other bituminous pavements, Ior instance, is absolutely precluded.

By this invention relative movement between the concrete foundation and the wearing-surface prevented, and the resultant nnpleasantly familiar depressions and humps in bituminous pavements are avoided. The stones projecting from the concrete become a part 0 ,theWearing-surface and give additional atellaility thereto, besides holding it The lii' e of the r7, tring-surface is prolonged, moreover, by reason of being held in its original position and. thus maintained of a uniiorrn densit' instead of being kneaded into alternate elevations and. depressions by the drawing pressure of the trai'lic.

I am. aware that it has been heretofore proposed to form pavements by constructing a foundation layer of stone coated with tar, asphalt, and the like, then a layer of coarse stone strewit or placed by hand and rolled in,

upon which the Wearing-surface is then aped also, that upon a layer of a plastic mass of tar, pitch, asphalt, and the like in a mold it has been proposed to superpose a layer of broken stone and partially embed the same,

such molded. blocks to he later laid upon a foundation. The professed/object in such cases has been to constitute of the inserted stone 1pieces a key to bind the upper and lower ayers. pavements and i ethods otproduction cliiier radically from my invenactcrises a pavement constructed according tion, in that the layer of stone does not form an integral part of a'homogeneous structure, as in my pavement, but is applied subsequently and lacks the great stability and relative immobility (if the parts which charto my invention.

Having thus fully disclosed my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

it A pavement comprising a concrete structure having a rough surface com osed of projecting stones forming an inte ra part of the structure with intervening depressions.

2. A paving-foundation comprising an integral structure having a rough surface composed of projecting stones and intervening depressions.

3. A concrete foundation having a rough surface caused by the projecting edges of stones forming an integral part of the structure.

4. A foundation comprising a concrete structure, a portion of the component stones of which form an integral part thereof and project above the surface thereof.

5. A foundation comprising an integral concrete structure formed preferably of one part cement, two parts sand and six parts broken stone, the component parts of the mass thoroughly inrermingled, the edges of a portion of the stone projecting above the body of the material and constituting an uneven-surface therefo j 6. A pavement comprised of a concrete foundation having a rough upper surface, formin an integral part thereof and a wearing-surlace applied above and in engagement with said roughsurface.

7. A pavement comprising a concrete foundation, a portion of the integral component stonesof which project above the surface thereof, and a Wearing-surface applied above and in engagement with said. roughened sur 0 face.

8. The process of producing a paving foundation, which consists in placing in position a layer of concrete, and compacting t e same until the more liquid portions are partially displaced from the lower part of the mass and the stones forming the upper portion project above the surface thereof, and allowing to set.

9. The method of producing a pavement, which consists in placing in position a layer of concrete, tamping the same until the more liquid portions are partially displaced from the lower part of the mass which is thus made thoroughly compact and the stones forming the upper portion project above the upper surfa e thereof, permitting to set, coating with cement and applying thereto asuitable wearing-surface.

10. The process of producing a pavement, which consists in placing in position a layer of concrete, compacting the same until the more liquid portions are partially displaced from the lower part of the mass and the stones forming the upper portion project above the surface thereof, permitting to set, and applying thereto a bituminous wearing surface.

In testimony whereof I a'llix my signature to this specification in the presence of two witnesses.

' PETER C. REILLY.

Witnesses:

JAMES Bnonnn,

WILLIAM F. Moons.

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