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Publication numberUS3734453 A
Publication typeGrant
Publication dateMay 22, 1973
Filing dateDec 18, 1970
Priority dateDec 18, 1970
Publication numberUS 3734453 A, US 3734453A, US-A-3734453, US3734453 A, US3734453A
InventorsBailey A
Original AssigneeBailey A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tie rod assembly
US 3734453 A
A system for maintaining laterally spaced form boards for the reception of a concrete pour wherein the tie is of a non-conductive material and H-shaped in cross-section, the opposed brackets being specifically configured so as to bear directly against and provide the sole support for the opposed form boards.
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Description  (OCR text may contain errors)

Unite Sites Patent 1 91 1 1 3,734,453 Bailey 1451 May 22, 1973 541 TEE R01) ASSEMBLY 3,060,541 10 1962 Hillberg ..249 213 x [76] Inventor: Allen N. Bailey, 1607 South Locust gggi 5/1922 Nelsonw' 229/213 X Street Denver Colo 80222 1, 10/192 Dodd 2 9/213X 2,245,559 6/1941 Klnnlnger... 249/216 X [22] Filed; 1 1970 1,965,319 7/1934 Romero... 249/213 X 3,174,203 3/1965 Kemper ..249/215 [21] Appl. No; 99,479

Primary ExaminerJ. Spencer Overholser 52 us. c1. .249 213 249/40 249/190 Emmi""newalden Jones 511 11m. (:1 ..T ..E04 17/06 Atm'"eyclarence OBYien and Harvey Jawb- [58] Field of Search ..249/213, 214, 216,

T, 131 CP [57] ABSTRACT A system for maintaining laterally spaced form boards References Clted for the reception of a concrete pour wherein the tie is UNITED STATES PATENTS of a non-conductive material and H-shaped in crosssection, the opposed brackets being specifically con- 2,920,371 1/1960 Shoemaker ..249/214 figured so as to bear directly against and provide the 3,430,914 3/1969 Clasen et a1 ..249/217 ole support for the opposed form boards. 1,005,444 10/1911 Mackay 1 ..249/216 2,074,394 3/1937 Hoffer ..249/218 X 1 Claim, 5 Drawing Figures PATENIE 31x22 i973 Allen M Bailey TIE ROD ASSEMBLY The instant invention generally relates to forming systems, and is more particularly concerned with the ties and brackets utilized in maintaining a pair of laterally spaced form boards in a predetermined position relative to each other for the reception of a concrete pour.

As will be appreciated by those familiar with the art, it is conventional to position form boards, for walls or the like, in laterally spaced parallel relation to each other through the utilization of a plurality of transversely extending tie rods or bars. The opposed ends of the rods extend through apertures in the form boards and project laterally therebeyond for engagement by pair of brackets which wedge walers or cross-beams against the outer faces of the form boards so as to introduce a degree of structural stability thereto so as to resist the outward forces of the pour. Each of the ties normally includes a pair of spacers thereon which engage the inner faces of the form boards so as to maintain the desired spacing therebetween. In mounting the conventional system, great care must be taken so as to avoid any contact between the tie rods, which are of metal, with the internal reinforcing steel in that electrolysis will be produced at the point of contact. Further, care must be taken so as to exactly align the brackets along the length of the form for the reception of the walers, and finally, outwardly directed projections must be affixed to the ties or tie rods so as to resist any movement within the concrete, particularly in those situations wherein the outer projecting end portions thereof are to be broken or twisted off.

It is the intention of the instant invention to provide a tie and bracket system which is in both structure and manner of use simplified relative to the conventionally provided equipment and at the same time highly unique, incorporating significant advantages heretofore not available.

More particularly, the tie rods of the instant invention are to be constructed of a non-conductive material, specifically a rigid plastic capable of sustaining tension within the range of anticipated loading. The plastic rod will be H-shaped in cross-section so as to inherently provide a configuration which locks within the concrete, and at the same time avoiding any possibility of the occurrence of voids within the rod such as could occur were the rod molded in a solid rectangular or even circular configuration. Utilizing a rod of this construction, it will be appreciated that no danger of electrolysis exists. In addition, the opposed brackets are configured so as to engage directly against the form boards and progressively tension the rod whereby a positive clamping of the form board is effected between each bracket and the associated rod mounted integral spacer. In this manner, the necessity of the use of walers is avoided. It is contemplated that the rod and bracket units be orientated on approximately 16 inch centers when utilizing three-quarter inch plywood for the form boards. lncidently, it will be appreciated that, upon a removal of the form boards, brackets and projecting portions of the plastic rods, any exterior wall board or paneling can be mounted by a driving of nails or screws directly into the wall embedded exposed ends of the rods, thus eliminating the necessity of utilizing conventional furring strips or the like.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIG. 1 is a cross-sectional view through a forming system incorporating the rod and brackets of the instant invention;

FIG. 2 is an exploded perspective view of a portion of the rod and one of the brackets;

FIG. 3 is a perspective view of one of the brackets illustrating the planar form engaging innerface thereof;

FIG. 4 is an enlarged cross-sectional view taken substantially on a plane passing along line 4-4 in FIG. 2; and

FIG. 5 is a cross-sectional detail illustrating the utilization of the embedded rod as a means for mounting wall paneling.

Referring more specifically to the drawings, reference numeral 10 is used to designate a tie or tie rod constructed in accordance with the instant invention, with the associated brackets being designed by reference numeral 12. Both the rod 10 and the brackets 12 are to be made of a non-conductive material, preferably a synthetic resinous material or plastic incorporating a substantial degree of rigidity and a strength sufficient so as to accommodate the loading stresses to which these components are to be subjected.

The rod 10 is, for a major portion of the length thereof between the opposed ends 14, to have an H- shaped cross-section. This is considered significant in that the rod will thus integrally incorporate longitudinal edges and grooves, defining a plurality of angularly related longitudinal faces, which will receive the concrete for a firm binding of the rod to the concrete and a locking of the rod 10 in position. In addition, this H-shaped configuration is significant in that by molding the plastic material of the rod 10 in this configuration, as opposed to as an example a square configuration which would also inherently bind and lock within the concrete against rotational movement relative thereto, the rod can be molded without voids or air pockets in the material which would reduce the tensile strength of the rod 10 and provide an unusable product.

The opposed ends 14 of the rod 10 are in the nature of enlarged heads, each having a conical outer tip 16 and a planar inner face or shoulder 18. Inwardly spaced from each of the enlarged ends 14 is an integrally formed spacer or spacing collar 2i) which projects radially outward from the main body of the rod 10. A further pair of integral stabilizing collars 22, of a smaller diameter than the spacers 20, are provided along the central portion of the rod 10.

Each of the brackets 12 associated with each rod or tie 10 is rectangular and consists of a flat panel 24 which presents a planar rear face 26. An inverted keyhole slot 28 is defined through the panel 24 and incorporates an enlarged lower circular portion 30 capable of receiving an enlarged rod end 14 therethrough and a vertically elongated slot portion 32 which snugly accommodates the main portion of the rod 10, that portion having the I-l-shaped cross-section, but too narrow so as to allow passage of the head 14 therethrough.

The bracket 12 further includes flange defining portions projecting perpendicularly from the second face thereof Such flange defining portions are formed continuously about the periphery of the panel 24 and transversely thereacross so as to conform to and follow along the edges of the keyhole slot 28. The portion of the flanges defined peripherally about the panel 24 include upper and lower edge portions indicated by reference numerals 34 and 36 respectively, and opposed side portions indicated by reference numeral 38. The sections of flanges which extend transversely across the panel 24 and conform to the opposite sides of the keyhole 28 are designated by the reference numeral 40. As will be appreciated from the drawings, and in particular FIGS. 1, 2 and 3, the outer edges of 38 and 40, commencing with the upper flange portion 34, parallel with panel 24 for a short distance downward from the flange portion 34 and then taper inwardly toward the panel 24 so as to terminate at the relatively shorter lower flange portion 36, thus providing in effect an inclined face along a major portion of the outer side of the bracket 12. Incidently, it will be noted that each of the keyhole conforming flange portions 40 also includes an integral full height projection 42 which has a passage 44 defined longitudinally therethrough, this passage continuing through the panel 24 and acting as a guide for bracket stabilizing nails 46 should such be deemed necessary.

In use, the form boards, designated by reference numeral 48, are positioned in parallel spaced relation to each other and the tie rods introduced therebetween. As will be appreciated from FIG. 1, the form boards 48 engage against the spacers or spacing collars with the rod end portions being introduced through preformed openings or holes 50 provided in the form boards 48, the conical outer end of each of the enlarged heads 14 assisting in a guiding of the rod end portions through the holes 50. The pair of brackets 12 associated with each rod lil are then mounted with the planar face 26 of each bracket being engaged directly against the outer surface of the corresponding form board 48. The introduction of the enlarged head 14 through the circular enlarged portion of the corresponding keyhole 28 is simplified by the provision of the conical end 16. Once the enlarged head 14 passes beyond the tapering outer face of the bracket, the bracket 12 is driven downwardly whereby a gradual and continuing pressure is exerted on the corresponding form board 48 so as to drive the form board rearwardly and effect a clamping of the form board between the enlarged planar face 26 of the bracket 12 and the integral spacer 20 on the rod 10. Once the bracket is firmly seated, the enlarged head 14 sitting on the upper parallel portions of the side conforming flange portions 40, stabilizing nails 46 can be used if desired. Of particular significance is the fact that, inasmuch as the rods 10 are of a non-conductive material, the rods can be positioned as desired without concern as to whether or not the internal steel reinforcing which is to be incorporated into the concrete wall and the like is engaged thereby. This is of course contrary to conventional forming systems wherein great care must be taken so as to avoid contact between the conventional metal ties and the internal reinforcing to preclude the possibility of electrolysis. Further, the utilization of brackets having planar rear faces adapted for engagement directly against the form boards is significant in that this eliminates the necessity of using walers, thus substantially reducing the cost of the system and eliminating both labor and time in the assembly and disassembly of the forming system.

Subsequent to a hardening of the pour sufficient so as to enable a removal of the formwork, the retaining nails 46, if used, are removed and the individual brackets 12 driven upwardly for removal from the rods 10. The form boards are then moved outwardly from the opposed faces of the formed wall and the projecting rod portions broken or cut off. If so desired, lines of weakness or shear lines can be provided about each rod and portion, preferably immediately inward of the spacer 20, so as to facilitate a snapping off of these outer end portions. As previously referred to, the configuration of the rod 10 lends itself to firm embedment within the concrete. As such, there is no tendency for the rod to slip or move as the end portions are being snapped or twisted therefrom, this also constituting an important feature of the invention.

With reference to FIG. 5, once the exposed end portions of the rod are removed, the exposed embedded portion of the rod 10, being formed of plastic, can be utilized as a nailing base to receive a driven fastener, generally designated by reference numeral 52, for a mounting of wall paneling or other wall finishing surfaces 54. It is contemplated that the rods 10 be positioned at equally spaced points throughout the formwork, and as such, the utilization of these rods for the mounting of paneling 54 will be greatly simplified. This in turn of course eliminates the necessity of utilizing furring strips or other means for the mounting of wall finishing means.

From the foregoing, it will be appreciated that a particularly distinctive forming system has been defined, this system incorporating specific and highly significant advantages which, while clearly desirable, have heretofore been unavailable.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.

What is claimed as new is as follows:

1. For use in a forming system incorporating a pair of laterally spaced form boards for the reception of a concrete pour therebetween, an elongated tie rod positionable between the form boards to engage therewith and define a stabilization means therefor, said rod being formed of a non-conductive plastic material, said tie rod having a solid H-shaped cross-section along a major portion of the length thereof, said H-shaped crosssection defining a plurality of angularly related longitudinal faces, said tie rod further having integral enlarged opposite ends, said ends defining inwardly directed shoulders positionable outward of the opposed form boards, and a pair of form board engaging non conductive plastic brackets positionable outward of the opposed form boards, each bracket comprising a flat panel presenting planar front and rear faces, an inverted keyhole slot defined through said panel, flange means projecting perpendicularly from the front face of the panel peripherally thereabout and transversely thereacross so as to conform to and follow along the edges of the keyhole slot, said flange means tapering transversely across the front face of the panel along the length of the defined slot to define a gradually increasing thickness in the bracket from a first end of the keyhole slot which incorporates an enlarged circular portion capable of receiving the rod end to the second end of the slot which, while capable of accommodating the rod, is too narrow to allow passage of the rod end therethrough. i

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1005444 *Nov 30, 1910Oct 10, 1911George MackayBinder.
US1556313 *Dec 10, 1924Oct 6, 1925Dodd John HCombined spacing and the bar for concrete forms
US1712631 *Feb 26, 1925May 14, 1929Nelson Spreadertie CompanyCombination tie and spreader for concrete molds
US1965319 *Jul 27, 1931Jul 3, 1934Romero Andres ESystem for the construction of walls
US2074394 *Oct 16, 1935Mar 23, 1937Universal Form Clamp CompanyForm tie
US2245559 *Nov 29, 1933Jun 17, 1941Arthur M KinningerWall form tie
US2920371 *Jan 13, 1958Jan 12, 1960Simplex Forms Systems IncTie-wires for concrete forms
US3060541 *Mar 7, 1960Oct 30, 1962Superior Concrete AccessoriesWaler clamp assembly
US3174205 *May 8, 1962Mar 23, 1965Beacon Mfg CoNapping machine
US3430914 *May 18, 1967Mar 4, 1969Superior Concrete AccessoriesTie rod assembly for a concrete wall form and with novel spacer members for the form sides
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3881684 *Jan 26, 1973May 6, 1975Daniels Jr Ransom JTie rod for concrete forms
US3985329 *Mar 24, 1975Oct 12, 1976Karl LiedgensCollapsible molds and spacers therefor
US4006878 *Jul 16, 1973Feb 8, 1977Reliable Electric CompanyConcrete form assembly
US4247073 *Nov 2, 1978Jan 27, 1981Mike VarioConcrete form tie assemblies
US4290985 *Jun 10, 1980Sep 22, 1981Giuseppe BaraleShuttering system for casting concrete walls or partitions, and a method for its assembly
US4300747 *Nov 10, 1980Nov 17, 1981Brow Arthur JFlat shoe form tie bracket for use with concrete forms
US4545163 *Dec 28, 1983Oct 8, 1985Ovila AsselinHeat insulated tie rod for concrete wall members
US5196209 *Jan 14, 1991Mar 23, 1993Wayss & Freytag AgMaking a prestressed concrete beam
US5473849 *May 24, 1993Dec 12, 1995Materials Technology, LimitedBuilding wall and method of constructing same
US5497592 *May 19, 1994Mar 12, 1996Boeshart; Patrick E.Quick release tie
US5651910 *Nov 2, 1995Jul 29, 1997Dallas E. MyersConcrete wall form and tie system
US7032357Oct 9, 2002Apr 25, 2006Arxx Building Products, Inc.Bridging member for concrete form walls
US7124547 *Aug 26, 2002Oct 24, 2006Bravinski Leonid G3-D construction modules
US8444108 *Feb 9, 2009May 21, 2013Kennedy Metal Products & Buildings, Inc.Mine seal with electrically non-conductive ties
US9033302 *Aug 3, 2012May 19, 2015Composite Technologies CorporationTaper-ended form tie
US20030029106 *Oct 9, 2002Feb 13, 2003Arxx Building Products, Inc.Bridging member for concrete form walls
US20040035073 *Aug 26, 2002Feb 26, 2004Bravinski Leonid G3-D construction modules
US20050271480 *Jun 4, 2004Dec 8, 2005Irvine John EAnchor system for use in forming barrier walls
US20090279955 *Feb 9, 2009Nov 12, 2009Kennedy Metal Products & Buildings, Inc.Mine Seal With Electrically Non-Conductive Ties
US20130032690 *Aug 3, 2012Feb 7, 2013Composite Technologies CorporationTaper-ended form tie
EP1945883A1 *Oct 27, 2006Jul 23, 2008Jurisdictio Berergensis ASA tie rod for formwork
U.S. Classification249/213, 249/190, 249/40
International ClassificationE04G17/07, E04G17/06
Cooperative ClassificationE04G17/0721
European ClassificationE04G17/07B4
Legal Events
Sep 8, 1986AS02Assignment of assignor's interest
Owner name: BAILEY, ALLEN N.
Effective date: 19860902
Sep 8, 1986ASAssignment
Effective date: 19860902