US2396808A - Precast unit pavement, etc. - Google Patents

Description

Mann ifs, 19216.

F. w. ABEL 2,396,808 PREcAsT UNIT' PAVEMENT, ETc.

2 sheets-sheet 1 llllll l March 19, 1946. F. w. ABEL 2,395,808

PREGAST UNIT'PAVEMENT, ETC

Filed July 28, 1943 2 Shees-Sheet 2 1N VENTOR. Ffa/WM a.

vPatented Mar. 19, 1946 UNITE@ .ii'fa'i PJE'EENY'E f OFFICE PRECAST UNIT- PAVEMENT, ETC. Franklin W. Abel, Franklin, Ind.

Application July 28, 1943, Serial No. 496,409

2 Claims. (Cl. .S4-13') 'This invention relates to a fabricated precast pavement, platform, runway, etc.

The chief object of this invention to produce a vstructure of the character indicated and from precast concrete so that the several units may be formed, set and cured at one location where most convenient and transported to the place of use if desired and there assembled into structure form.

Another object of this invention is to cast .the units without obstructions and thereafter apply thereto connector means by which the same may be handled, which means are of relatively projecting character, and when connected are of drawing type, comparable to turnbuckle usage.

.A further object of the invention is to provide a drain type gutter apron whenever and wherever desired.

The chief feature of the invention consists in precasting units and then connecting same together to form a complete pavement, platform or the like, and one wherein leakage through the joints between slabs is prevented to prevent foundation washing or freezing and lifting, etc.

Other objects and features will be set forth more fully hereinafter.

The full nature of the invention will be understood from the accompanying drawings and the following description and claims:

In the drawings Fig. l is a top plan view of a section of a roadway including a plurality of precast slabs connected together and with a curb at one side.

Fig. 2 is an enlarged vertical sectional view thereof taken in the plane of aligned anchoring and connecting means.

Fig. 3 is an enlarged perspective view of a portion of the resilient, expansion and sealing strip including a pocket registering recess.

Fig. 4 is an enlarged perspective view of a cap for closing the pocket.

Fig. 5 is a central section of a modified anchor structure.

Fig. 6 is a plan view of a gutter apron, curb and drain formation.

Fig. 7 is a sectional view taken on line 'I-l of Fig. 6 and in the direction of the arrows.

In Fig. l of the drawings lil indicates precast concrete slabs all of which are identical or same may slightly differ as desired, as regards thickness. These are capable of interconnection tc form a complete pavement or roadway with sealing strips I I between slabs.

Each slab I on at least two side faces is provided with upwardly and sidewardly opening CII pockets I2 -shown most clearly in Fig. 2. Each pocket has a semi-cylindrical bottom surface. Each strip I I includes a out out I3, see Fig. 3, preformed or subsequently cut therein to register with the side outlet of pocket l2.

The Aconfronting side faces of the slabs in registration With the pockets as indicated at I4 and t5, see Fig. .2, expose the slab embedded anchor members I6. Each is herein shown tubular or centrally cored and internally threaded as at I1. To prevent rotation wings I8 may be provided. To prevent axial withdrawing the rearward ends are enlarged as at i9. .Herein same is of conical type.

When each anchor member is of fixed embedment type the foregoing suffices. When, however, slight play is desired each anchor member can bite into a conical sleeve of softer metal than the anchor, such as a lead sleeve, 20, see Fig. 5, and thus anchor rigidly in the slab when sufficient axial pull is exerted thereon, for the sleeve friction seats and locks the sleeve in the slab and the anchor locks to the Sleeve.

An externally threadedv connector 2l is seated in each of the threaded sockets, and projects from the slab face exposing same. It is of a length less than the length of the socket. This member may be inserted following casting of the socket, and may serve as a means for attaching elevating equipment when the slab is to be slipped into place in abutting relation to a previous slab and on a sand cushion 9, see Fig. 2.

When the slabs are aligned properly, the connector` 2I is backed out of its supporting socket and a sleeve coupling 22 is then threaded onto the aligned confronting members 2l. Then when properly rotated, this connector 22 having tool engageable exterior 23 and right and left hand threads draws the two slabs together, or rather the last laid slab to the previously connected slab and slabs, at the same time compressing the interposed sealing strips I I.

If the roadway, platform, landing run, etc. is of semi-permanent type the several pockets are covered by cap-s 25 with inwardly flared side faces 26, see Fig. 4, which may be pitched or tarred to prevent leakage. When pressure tted` in the pocket the same is friction retained therein and with its top face flush with the slab load face. When access to the pockets is desired the caps are jimmied therefrom. If the roadway, etc. is of permanent type, each pocket may be filled with a non-hardening asphalt mixture.

It is to be understood that only the preferred form of anchoring and connector members is termines the pocket exposed length of bolt/4i.

Threaded member 44 is threaded home in nut 32 and projects into the pocket 43. A turnbuckle type coupling connector 45 `serves to draw the gutter apron and curb slab togetherwith seal i I therebetween if utilized.

A catch basin 33 is provided at suitable intervals. It is closed by a grate 36 which may be of precast concrete or metal as desired. The catch basin above its bottom 33a includes in opposite sides outlets 34 which discharge to drain tiles 35 that lead to the drain sewer.

While the invention has been illustrated and described in great detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character.

The several modifications described herein as Well as others Whicnwill readily suggest themselves to persons skilled in this art, all are considered to be Within the broad scope of the invention, reference being had to the appended claims.

The invention claimed is:

1. A concrete pavement comprising a plurality of precast slabs with pockets formed in certain side faces, opening upwardly and through said faces; anchor means exposed in each of said pockets; second anchor means carriedY by the slabs'at faces removed from said pocket faces, said rst and second anchor means of each slab being arranged whereby at opposing side faces of adjacent slabs, a pocket anchor means of one slab is longitudinally aligned with one of said second anchor means; retractible connecting means interengaging said first and second anchor means across said pockets for drawing said slabs one toward the other and maintaining connection therebetween; each of said anchor means being embedded in the respective slabs and having an enlarged head remote from its exposed end; a compressible, Y complementary shaped sleeve enveloping each of said anchor means; said connecting means and anchor means having male and female thread connections therebeof precast slabs with pockets formed in certain side faces, opening upwardly and through said faces; anchor means exposed in each of said pockets; second anchor means carried by the slabs at faces removed from said pocket faces, said iirst and second anchor means of each slab being arranged whereby at opposing side faces of adjacent slabs, a pocket anchor means of one slab is longitudinally aligned with one of said second anchor means; retractible connecting means interengaging said rst and second anchor means across said pockets for drawing said slabs one toward the other and maintaining connection therebetween; each of said anchor means being embedded in the respective slabs and having an enlarged head remote from its exposed end; a compressible, complementary shaped sleeve enveloping each of said anchor means; said .connecting means and anchor means having male and female thread connections therebetween; and means closing said pockets; said anchor means being internally threaded; and said connecting means comprising a pair of externally threaded members engaging respectively with the threads of opposing anchor means, and a reversely, internally threaded sleeve of a length less than that of said pockets and screw-threadedly engaging both of said threaded members.

FRANKLIN W. ABEL.

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