US3379105A

US3379105A - Permanent curb form structure having tongue and groove joint means

Info

Publication number: US3379105A
Application number: US568889A
Authority: US
Inventors: Hugh C Lynch
Original assignee: Individual
Current assignee: Individual
Priority date: 1966-07-29
Filing date: 1966-07-29
Publication date: 1968-04-23
Anticipated expiration: 1985-04-23

Description

Aprll 1968 H. c. LYNCH PERMANENT CURB FORM STRUCTURE HAVING TONGUE AND GROOVE JOINT MEANS Filed July 29, 1966 INVENTQR. HUGH a. LYNCH BY XMv United States Patent 3,379,105 PERMANENT CURB FORM STRUCTURE HAVING TONGUE AND GROOVE JOINT MEANS Hugh C. Lynch, 5569 Lyford Ave., Memphis, Tenn. 38117 Filed July 29, 1966, Ser. No. 568,889 3 Claims. (Cl. 94-31) This invention relates to a permanent form structure for forming and permanently facing the curb or border of concrete walks, roads, automobile service station islands and the like. The invention basically includes a pair of curb sections having coactingly operative tongue arid groove joint means for longitudinally aligning and endwise joining the curb sections.

In current practice, certain concrete curb structures utilize curb sections having means for joining the sections together and such structure adapted to be used in forming the green concrete as it is poured, and as a permanent facing strip in the cured and finished concrete construction. The curb form structure of the present invention concerns two or more curb rail members each having respectively a horizontal bead or rib extending along the upper edge corner of said curb rail.

A principal object of the invention is to provide an improved joint for longitudinally aligning and endwise joining ribbed curb rail members.

An object of the invention is to provide curb form structure including curb form sections which are quickly and easily assembled and disassembled for packaging or shipment and such sections readily utilized in concrete construction.

A further object is to provide curb form section joint means which includes readily accessible bolt means for quickly and easily connecting and disconnecting the sections.

A further object is to provide tongue and groove curb form section joint means for readily longitudinally aligning the sections.

A further object is to provide a strong and secure joint between the curb form sections.

A further object is to provide a neat and close fitting joint between the curb sections.

The means by which the foregoing and other objects of the present invention are accomplished and the manner of their accomplishment will be more readily understood from the specification upon reference to the accompanying drawings, in which:

FIG. 1 is an environmental view of the curb form structure of the invention.

FIG. 2 is an enlarged elevational view of the curb form joint means taken as on the line IIII of FIG. 1, and illustrated without the concrete structure.

FIG. 3 is a vertical plane sectional view taken as on the line III-III of FIG. 2.

FIG. 4 is an exploded perspective view of the joint means illustrated in FIGS. 2 and 3 and shown without the nut and bolt fastener means.

FIG. 5 is a horizontal plane sectional view taken as on the line VV of FIG. 2.

It should be understood that in the following description where the term curb form section appears, it is to be construed to include a curb form sectional part for a walk, road, or automobile service station island and a sectional part of straight configuration as illustrated in FIG. 1 or U-shaped configuration as utilized in the end curb form sections of service station islands. Also, it should be understood that although the following description is directed toward a single pair of curb form sections, in certain embodiments of the invention more than a single pair of curb rail members would be utilized and the joint means would be embodied in both ends of a 3,379,105 Patented Apr. 23, 1968 section. For purposes of clarity, the invention will be described in the structure of a pair of straight curb rail sections 11, 11' and with removable threaded fastener members 13.

Rail sections 11, 11' respectively include rail members 15, 15' and

joint members

17, 17.

Rail members

15, 15 respectively are longitudinally uniform rolled sheet metal members. Each member is like the other in size and cross sectional configuration and each includes respectively a flat body portion 19, 19' having planar inward and outward side surfaces respectively 21, 23 and 21', 23'.

Rail members

15, 15 include respectively longitudinal

concavoconvex rib portion

25, 25 offset outwardly respectively relative to rail member body portions 19, 19' and terminating respectively in a longitudinally extending

edge surface

27, 27. Each rail member 15, 15' includes an end portion 29, 29' respectively including an inward side surface terminating respectively in an

end edge surface

21, 21 extending respectively perpendicular to the respective longitudinal edge surfaces 27, 27'.

Joint members 17, 17' are fixedly secured in confronting engagement along the inward side surface of respective rail members 15, 15'. Joint members 17, 17' are each like the other and each is preferably die formed from sheet metal which is preferably of the same gauge as the metal of rail members 15, 15'. Joint members 17, 17' include respectively tongue elements 33, 33' and a

groove element

35, 35. Joint member tongue and

groove elements

33, 35 and 33, 35' are respectively fixedly secured along the inward surface respectively of

end portions

29, 29 of rail members 15, 15' by weld beads 37, 37'. Edge surfaces 39, 39' respectively of groove elements 35, 35' preferably are arranged even with end edge surface 31, 31' of rail members 15, 15'.

Joint members 17, 17' include respectively upper and

lower extension portions

41, 43 and 41', 43'. Upper extension portions 41, 41' span respectively the concave side surface of

rib portions

25, 25 and are respectively fixed along longitudinal edge surfaces 27, 27' by weld beads 45, 45'. Lower extension portions 43, 43' of

joint members

17, 17 parallel abuttingly engage respectively the inward side surfaces respectively of end portions 29, 29'. Joint member groove elements 35, 35' are parallel spaced respectively from the inward side surfaces of rail members 15, 15' and define respectively groove openings 47, 47'. The attachment of

joint members

17, 17 on the end portion of each rail member and the relative arrangement of the joint members is such that when end edge surfaces 31, 31' are abuttingly engaged and rail members 13, 13' are in corresponding longitudinal alignment, the tongue and groove elements of the joint members are coactingly engaged.

Upper and

lower apertured lugs

49, 51 and 49', 51' are integrally secured respectively to upper and lower joint

member extension portions

41, 43 and 41', 43.

Upper lugs

49, 49 project perpendicularly from upper extension portions 41, 41', and

lower lugs

51, 51 project perpendicularly from

lower extension portions

43, 43. Upper and

lower edge surfaces

53, 55 and 53', 55' respectively of the upper and lower lugs are beveled or extend obliquely; since joint members 17, 17' are alike and interchangeable in fabricating the rail sections, both the upper and the lower edge surfaces respectively of the upper and lower lugs are beveled to permit the top surface of the concrete to be sutficiently above the respective upper lugs to provide a neat straight line of demarcation between

rail members

15, 15 and the edge of the concrete.

The curb form sections of the present invention may be quickly and easily assembled or disassembled in packaging or shipping the sections and in use provides a smooth, uniform curb surface. Upper extension portions 41, 41' of joint members 17, 17' extend across the convex back surfaces of rib portions 25, 25' and there is small likelihood of damage to the rolled rib edges in shipment. The tongue and groove joint means of the curb form insures quick and accurate alignment of the form sections.

Although the present invention has been described with reference to a preferred embodiment thereof, it is to be understood that it is not to be so limited since changes and modifications may be made therein which are within the full intended scope of the present invention as hereinafter claimed.

I claim:

1. A permanent form structure for forming and permanently facing the curb or border of concrete walks, roads, automobile service station islands and the like comprising: a first curb form section including a horizontal longitudinally uniform sheet metal rail member including a fiat body portion having planar inward and outward side surfaces, and including a longitudinal concavoconvex rib portion offset outwardly relative to said outward side surface and terminating in a longitudinal edge surface, and including an end portion having an inward side surface terminating in an end edge surface extending generally perpendicular to said longitudinal edge surface, a first elongated vertical joint member fixedly secured in confronting engagement along the inward side surface of said first rail member end portion and spanning the concave side surface of said rib portion, said first joint member including a tongue element and a groove element vertically spaced apart, said tongue element being flat and substantially of uniform thickness and extending beyond the end edge surface of said first rail member in parallel relationship therewith, said groove element being substantially spaced from the inward side surface of said first rail member end portion and defining a grooved opening therebetween; a second curb form section including a longitudinally uniform sheet metal rail member of the same cross sectional size and configuration as the rail member of said first curb form section and including a fiat body portion having planar inward and outward side surfaces, and including a longitudinal concavoconvex rib portion offset outwardly relative to said outward side surface and terminating in a longitudinal edge surface, and including an end portion having an inward side surface terminating in an end edge surface extending generally perpendicular to said longitudinal edge surface, a second elongated vertical joint member fixedly secured in confronting engagement along the inward side surface of said second rail member end portion and spanning the concave side surface of said second rail member end portion, said second joint member including a tongue element and a groove element vertically spaced apart, said tongue element being fiat and substantially of uniform thickness and extending beyond the end edge surface of said second rail member in parallel relationship therewith, said groove element being substantially spaced from the inward side surface of said second rail member end portion and defining a groove opening therebetween, the attachment respectively of the joint members on the end portions of the rail members being such that with the end edge surfaces of said first and second rail members abuttingly engaged and with the rail members in corresponding longitudinal alignment, the tongue and groove elements of said first and second rail members are coactingly engaged with the tongue element of one joint member being engaged with the groove element of the other joint member; and coupling means for releasably coupling said first and said second joint members together in said coactingly engaged configuration.

2. A form structure as defined in claim 1 in which said coupling means includes at least one lug having a bore opening fixed on each joint member and a threaded fastener received in the bore openings detachably engaging the lugs and releasably clamping said first and second joint members together.

3. A form structure as defined in claim 1 in which coupling means includes at least one lug having a through opening fixed on each joint member and fastener means detachably engaging the lugs and releasably clamping said first and second joint members together and including a beaded threaded bolt extending through the openings of said lugs and a nut removably threaded on said bolt.

References Cited UNITED STATES PATENTS 2,851,134 9/1958 Robinson 52385 3,242,834 3/1966 Sondheim 9431 3,297,345 1/1967 Downing 287-103 JACOB L. NACKENOFF, Primary Examiner.

Claims

1. A PERMANENT FORM STRUCTURE FOR FORMING AND PERMANENTLY FACING THE CURB OR BORDER OF CONCRETE WALKS, ROADS, AUTOMOBILE SERVICE STATION ISLANDS AND THE LIKE COMPRISING: A FIRST CURB FORM SECTION INCLUDING A HORIZONTAL LONGITUDINALLY UNIFORM SHEET METAL RAIL MEMBER INCLUDING A FLAT BODY PORTION HAVING PLANAR INWARD AND OUTWARD SIDE SURFACES, AND INCLUDING A LONGITUDINAL CONCAVOCONVEX RIB PORTION OFFSET OUTWARDLY RELATIVE TO SAID OUTWARD SIDE SURFACE AND TERMINATING IN A LONGITUDINAL EDGE SURFACE, AND INCLUDING AN END PORTION HAVING AN INWARD SIDE SURFACE TERMINATING IN AN END EDGE SURFACE EXTENDING GENERALLY PERPENDICULAR TO SAID LONGITUDINAL EDGE SURFACE, A FIRST ELONGATED VERTICAL JOINT MEMBER FIXEDLY SECURED IN CONFRONTING ENGAGEMENT ALONG THE INWARD SIDE SURFACE OF SAID FIRST RAIL MEMBER END PORTION AND SPANNING THE CONCAVE SIDE SURFACE OF SAID RIB PORTION, SAID FIRST JOINT MEMBER INCLUDING A TONGUE ELEMENT AND A GROOVE ELEMENT VERTICALLY SPACED APART, SAID TONGUE ELEMENT BEING FLAT AND SUBSTANTIALLY OF UNIFORM THICKNESS AND EXTENDING BEYOND THE END EDGE SURFACE OF SAID FIRST RAIL MEMBER IN PARALLEL RELATIONSHIP THEREWITH, SAID GROOVE ELEMENT BEING SUBSTANTIALLY SPACED FROM THE INWARD SIDE SURFACE OF SAID FIRST RAIL MEMBER END PORTION AND DEFINING A GROOVED OPENING THEREBETWEEN; A SECOND CURB FORM SECTION INCLUDING A LONGITUDINALLY UNIFORM SHEET METAL RAIL MEMBER OF THE SAME CROSS SECTIONAL SIZE AND CONFIGURATION AS THE RAIL MEMBER OF SAID FIRST CURB FORM SECTION AND INCLUDING A FLAT BODY PORTION HAVING PLANAR INWARD AND OUTWARD SIDE SURFACES, AND INCLUDING A LONGITUDINAL CONCAVOCONVEX RIB PORTION OFFSET OUTWARDLY RELATIVE TO SAID OUTWARD SIDE SURFACE AND TERMINATING IN A LONGITUDINAL EDGE SURFACE, AND INCLUDING AN END PORTION HAVING AN INWARD SIDE SURFACE TERMINATING IN AN END EDGE SURFACE EXTENDING GENERALLY PERPENDICULAR TO SAID LONGITUDINAL