US1890412A

US1890412A - Device for laying plastic pavements

Info

Publication number: US1890412A
Application number: US401454A
Authority: US
Inventors: John P Rogers
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-10-22
Filing date: 1929-10-22
Publication date: 1932-12-06
Anticipated expiration: 1949-12-06

Description

3 I J. P. ROGERS 0,4

DEVICE FOR LAYING PLASTIC PAVEMENTS .Filed Oct. 22. 1929 INVENTOR JBknB Rogers BY W9% ATTORN EYS Patented Dec. 6, 1932 UNITED STATES r-ATENT JOHN P. ROGERS, OF SAN :DIEGO, CALIFORNIA;

DEVICE FOR. LAYING smm msf Application filed ctober22, 1929. Serial No. 401,454.

This invention relates to paving, and comprehends a device for forming an elastic joint in plastic pavements in order to compensate for the contraction and expansion thereof.

The invention comprehends a device for making provision when laying a plastic pavement, for a joint to allow for the contraction and expansion of the pavement in order to I avoid cracking, which device consists of a 1) form member adapted to be installed over the surface to be paved in'such a manner as to divide the plastic pavement forming ma terial into independent areas, which form member is constructed in such a manner as to facilitate its emplacement with respect to the pavement reinforcing means and to further facilitate its removal from between the adj acent formed pavement sections.

Other objects of the invention reside in 29 the simplicity of construction of the device employed, the economy with which the same may be produced and the general efiiciency derived therefrom.

With the above recited and other objects in view, reference is had to the following description and accompanying drawing, in which there are exhibited several examples or embodiments of the invention, while the claim defines the actual scope thereof. 1

In the drawing:

Figure 1 is a sectional perspective view il lustrating the manner in which the device is employed during the laying of the pavement. Figure 2 is a side view of the device or form member.

Figure 3 is an enlarged transverse "sectional view therethrough, taken approximately on the line 3'3 ofFigure 2.

Figure 4 is a, similar view of a slightly modified form of the member. Figure 5 is a side elevation of a still further modification of the invention.

Figure 6 is a sectional view illustrating the than ati its lower end to p ovideupwardly' V I diverging or w I downwardly converging side's 11,11. In practice, the strip 10 is preferably constructed with a wooden core 12:"which is covered by a sheetv metalcovering'131extendwith 1 inturned flan'ges 14 partially overlying its upper edge. A heavier and more rigid length of sheet'm'etal 15' overlies. the

edge of the core'12 and the flanges: 14 and is preferably secured in place by screws or other fastening devices 16 which" extend therethrough and area-nchored into thecore. The opposite ends of the upper coveringsheet 15 extend beyond the ends of the core and the covering 13 and are bent'inwardly and downwardly as at 17 to provide handle portions by virtue of which the strips may be handled. l

The tapering form of the strip illustrated in Figure 3 may be varied as illustrated in J Figure 4, in which instance one of the side surfaces 18 is disposed at a'right angle to the upper surface 19 andthe oppositeside surface 20 is inclined toward thelower edge 21 I l or cementitious pavement forming material 22 into independent areas or blocks,;as illustrated in Figure 1. In order, however, to: avoid interference with 'theproper positioning of the strips desc-ribed,ithe usual reinforcing material .23 is deflected. or offset downwardlyas at24= and the exposed bight portion will be protected at this point from moisture by tar paper ,25.

' In practice, the strips 10 will be positioned over the'surface to be paved in such a manner as to subdivide the plastic pavement forming material 22 into independent areas.

The strips will remain in place for asuflicient length of time to allow the material to set or harden to such adegree as to permit of the removal of the f rm, members or the strips 10 without defacing, damaging or otherwise marring the pavement surface. "The strips or form members will then be removed and a suitable elastic or resilient filler'will be infing around its side surfaces and loweredge 1 i I g Y 1 90 412 troduced into the spaces 26 formed between the adjacent pavement areas.

Asan alternative to offsetting the reinforc- 7 ving means 23, the strips or form members 10 asillustrated' in Figures 5 and 6 of the drawing, may be provided with notches 27 extending upwardly from the lower edges to accommodate the reinforcing means 23 and f to avoid the necessity of caklng or ofi'setting the same. In use, the sides of the strips or d e pform members, 10 willbe. oiled .or otherwise .a

V lubricated to facilitate their removal from form member v for ilse in laying plastic between the adjacent *paving sections" or areas. I I

What is claimedis pavements comprising an elongated substantially wedge shaped strip; consisting of aor I wooden, core, a sheetmetal covering extending around thesides .and lower narrow edge afid'aIigid'metaI strip f eaterthi,ckness i than'thecoveringzarranged over the upper e wider edge thereof, said latter strip extend ingv beyond the ends of the core and bent downwardly and inwardly to provide handles for facilitating the handling of the form m m e -v "JOHN P Q ROGERS. I '7