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Publication numberUS3289378 A
Publication typeGrant
Publication dateDec 6, 1966
Filing dateFeb 10, 1964
Priority dateFeb 10, 1964
Publication numberUS 3289378 A, US 3289378A, US-A-3289378, US3289378 A, US3289378A
InventorsJay Carroll William
Original AssigneeJay Carroll William
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Reinforcing rod support
US 3289378 A
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Description  (OCR text may contain errors)

W66 W. J. CARROLL. 33%,378

REINFORCING ROD SUPPORT Original Filed April 5, 1960 2 1 99Y' "S1'l@8't 1 Al Mil W u WIN Ml 1 '0 I j I l I /7 /0 /4 1 0 /7 ,5 .n fl /63F. 5 JNVENTOR.

WILLIAM JAY CARROLL tail-"i; BY m j 7 i Mai-Q hig ATTORNEYS w. J. CARROLL 3,2937% REINFORCING ROD SUPPORT Original Filed April 5, 1960 2 Sheets-Sheet 2 IN VEN TOR. WILLIAM JAY CARROLL his ATTORNEYS 3,289,378 Patented Dec. 6, 1966 Arr 3,289,378 REINFORCING R01) SUPPORT William Jay Carroll, Harbor Road, Sands Point, N.Y. Continuation of application Ser. No. 20,102, Apr. 5, 1960. This application Feb. 10, 1964, Ser. No. 344,526 3 Claims. (Cl. 52688) This application is a continuation of my copendin-g United States application Serial No. 20,102 filed April 5, 1960 and now abandoned.

The present invention relates to reinforcing means for use with poured concrete and other plastic substances, and, more particularly, to novel and improved support members for reinforcing rods.

Slab bar bolsters, individual high chairs and continuous high chairs are well known and extensively used in the field of reinforced concrete for supporting reinforcing bars at predetermined levels. These supporting members are usually made of various configurations of heavy gauge wire. A wooden form is laid out in which the reinforcing concrete is to be poured. The supporting members are set out on top of the wooden form boards, and the reinforcing bars are laid across the supporting members and are tied thereto at the various intersections. After this is done, the concrete or other plastic material is poured into the form, the wood form being subsequently removed after sufiicient hardening of the concrete or other plastic material.

In the case of reinforced concrete ceilings, the ceiling is either painted or plaster is applied to the concrete surface either directly or after an intermediate grinding step following the stripping away of the form boards. Since the middle reinforcing rod supporting members rested directly on the wood forms during the pouring operation, there is at least point contact of the metal support members with the outer surface of the concrete. Therefore, even if the metal support members are formed of galvanized metal, more often than not their unprotected metal surfaces are susceptible of rust and corrosion, either as a result of the grinding operation or through the general construction activities.

The resultant rust bleeds through any subsequent coat of plaster or paint that may be applied often requiring replas'tering or complete redoing of the ceiling structure.

It is customary to attempt to prevent this form of rust bleed by painting any metal surfaces appearing at the surface of the reinforced concrete with shellac or some similar substance. This is a time-consuming operation and unfortunately is usually not performed in a very reliable fashion.

In accordance with the invention, there is provided in combination with what otherwise may be conventional reinforcing rod supporting means, such as slab bar bolsters, individual high chairs, continuous high chairs, etc., nonmetallic contact members adapted to be attached to those portions of the bottom legs of the supporting members, which would otherwise be in contact with the wood form. The principal requirements with respect to these nonmetallic contact members is that they will withstand compression produced by the weight of the construction workers and the materials which may bear upon them, that they not be susceptible of rust or corrosion, and that there be a minimum contact between the contact members and the pouring forms.

For a more complete understanding of the invention, reference may be had to the following detailed description taken in conjunction with the accompanying figures of the drawings, in which:

FIGURE 1 is a perspective view of a continuous high chair reinforcing rod supporting means in combination with contact members, in accordance with the invention;

FIG. 2 is a partial plane view of a pouring form in which reinforcing rod supporting means and reinforcing rods have been set and tied;

FIG. 3 is a partial cross-sectional View of the pouring form of FIG. 2 taken along the line 33 and looking in the direction of the arrows, after concrete had been poured into the form;

FIG. 4 is a perspective view of a novel form of individual high chair, in accordance with the invention;

FIG. 5 is a perspective view of a novel form of slab bar bolster, partially broken away to show the configuration of the leg members of the slab bar bolster, in accordance with the invention; and

FIG. 6 is a perspective view of a contact member suitable for combination with reinforcing rod supporting means, in accordance with the invention.

In the case of the continuous high chair type supporting device 10 of FIGS. 1, 2 and 3 which constitutes a preformed unitary support means, a horizontal transverse supporting bar 11 is soldered, welded or otherwise suitably fastened to the supporting legs 12, which may have any suitable configuration but normally have ends 13 which either are adapted to be horizontally disposed continuous with the wood form boards 14 on which they are rested, or, in the case of conventional types :now in use, upturned so as to present a minimal point contact with the form boards 14. However, in accordance with the invention, the ends 13 of the legs 12 are adapted to be horizontally disposed and lie within a channel in a nonmetallic contact member 15, shown in greater detail in FIG. 6.

The contact member 15, which will be formed of any suitable plastic material, such as polyethylene, for example, having sufficient strength characteristics to withstand compression which might be placed on it by means of the Weight of the construction workmen or the construction materials passing over or laid on the reinforcing rods before the concrete or other plastic material is poured into the form. The contact members 15 may take any suitable form, however, in the preferred embodiment of the invention, the contact member 15 is: cylindrical with an open eccentric channel 16 running longitudinally therewith. It is obvious that a contact member of this type may be either individually fabricated or may be fabricated in the form of an elongated plastic extrusion which can be divided into appropriate lengths in any suitable manner.

One of the principal criterions in the construction and form of the contact member 15, is that it provides a minimum contact with any surface upon which it is rested, such as the form boards 14.

After the wood form 14 is constructed, the reinforcing bar supporting means 10 are placed on the form boards 1 in spaced-apart parallel relation, usually at a distance of 4 feet. Conventional reinforcing bars 17 are then laid transversely across the bars 11 on each of the supporting means 10. In accordance with customary construction codes, each intersection of the reinforcing bar 17 and the horizontal bar 11 of the supporting means 10 must then be tied with suitable tie wires. Construction codes also usually require that there be minimum clearance between the reinforcing bar 17 and the form boards 14, e.-g. of an inch.

If it is desired to include more than one layer of reinforcing bars in an especially thick concrete floor or ceiling, for example, higher level continuous high chairs or individual high chair type supporting means 20 (FIG. 4), for example, might be placed on the form boards 14 in spaces intermediate the reinforcing bars 17 and horizontal bars 11 of the supporting means 10. The rest point 21 0f the individual high chair type supporting means 20 would be at a level above that of the horizontal bars 11. In so far as the contact members 15a on the legs of the individual high chair type of supporting means 20 and concerned, they may be either identical with or substantially similar to the contact member 15 shown in FIG. 6.

In practice, the lower reinforcing rods in a concrete form, which are to be spaced the minimum clearance of of an inch from the form boards, are customarily supported by a supporting means of a conventional type called a slab bar bolster, which may have a configuration similar to the supporting means 10 of FIG. 1 without the contact members 15. In view of the small space in which the slab bar 'bolster supporting means must be placed, a construction such as that shown in FIG. 5 is used, in accordance with the invention. In FIG. 5, a slab bar bolster type supporting means 30 having a horizontal transverse bar 31, includes substantially straight legs 32, which are adapted to lie for substantially their entire extent in the open channel 16 of the plastic contact member 151;.

After the form is constructed in the manner shown in FIG. 2, structural concrete is poured into the form over and around the various described reinforcing and supporting members. When the concrete has hardened, the form is stripped, and thereis provided, in accordance with the invention, a structural arrangement in which plaster may be applied directly to the surface of the reinforced concrete or the surface may be ground without any chance of contacting metal reinforcing members or support means. Thus there is provided novel and unobvious means for eliminating the customary problems incident to rust bleed from reinforcing elements.

It will be understood by those skilled in the art that the above described embodiments are meant to be merely exemplary and that they are susceptible of modification and variation without departing from the spirit and scope of the invention. Therefore, it is deemed that the invention is not to be limited except as defined in the appended claims.

I claim:

1. A supporting device for supporting elongated reinforcing members at a predetermined distance above a removable surface serving as a form for the fabrication of a reinforced structure of hardenable construction material such as concrete, the reinforcing members and the support device being adapted to be embedded in and constitute a permanent part of the reinforced structure, comprising a preformed unitary support means including a longitudinally extending metallic support rod adapted to support at least one reinforcing member at at least one point of contact at a first predetermined distance above the removable surface and a plurality of spaced-apart transversely extending rigid metallic rods, each of said transversely extending rods being fixedly attached and in rigid relation to said support rod prior to fabrication of the reinforced structure at a point preestablished fixed distances along said longitudinally extending support rod from the points of attachment of others of said transversely extending rods and having a plurality of opposite ends extending from said longitudinally extending support rod for supporting said support rod relative to the removable surface, and individual preformed nonmetallic plastic contact members of predetermined configuration capable of withstanding compression during fabrication of the reinforced structure mounted on and having a channel formed therein of fixed predetermined dimensions with predetermined fixed spacings relative to the exterior of said respective member for fixedly receiving after fabrication a respective opposite end of one of said plurality of rods, each of said contact members supporting a respective one of said opposite ends of said plurality of transverse rods a second predetermined distance above the removable surface.

2. A reinforcing means adapted to be embedded in and constitute a permanent part of a reinforced structure of hardenable construction material such as concrete, comprising a preformed unitary support means including a longitudinally extending metallic member adapted to be positioned a first predetermined distance above a removable surface serving as a form for the fabrication of the reinforced structure and a plurality of spaced-apart transversely extending rigid metallic rods, each of said transversely extending rods being fixedly attached and in rigid relation to said member prior to fabrication of the reinforced structure at a point preestablished fixed distances along said longitudinally extending member from the points of attachment of others of said transversely extending rods and having a plurality of opposite ends extending from said longitudinally extending member for supporting said member relative to the removable surface, and individual preformed nonmetallic plastic contact members of predetermined configuration capable of withstanding compression during fabrication of the reinforced structure mounted on and having a channel formed therein of fixed predetermined dimensions with predetermined fixed spacings relative to the exterior of said respective member for fixedly receiving after fabrication a respective opposite end of one of said plurality of rods for supporting each of said opposite ends of said plurality of transverse rods 21 second predetermined distance above the removable surface.

3. A supporting device for supporting an elongated reinforcing member at a predetermined distance above a removable surface serving as a form for the fabrication of a reinforced structure of hardenable construction material such as concrete, the reinforcing member and the supporting device being adapted to be embedded in and constitute a permanent part of the reinforced structure, comprising a preformed unitary metallic support means adapted to support a reinforcing member a first predetermined distance above the removable sur-face, said metallic support means including at least a plurality of transversely extending rods in relatively rigid relation each having a plurality of opposite ends extending from said support means for supporting said support means relative to the removable surface, and individual preformed nonmetallic plastic contact members of predetermined configuration capable of withstanding compression during fabrication of the reinforced structure mounted on and having a channel formed therein of fixed predetermined dimensions with predetermined fixed spacings relative to the exterior of said respective member for fixedly receiving after fabrication a respective opposite end of one of said plurality of rods, each of said contact members supporting a respective one of said opposite ends of said plurality of transverse rods a second predetermined distance above the removable surface.

References Cited by the Examiner UNITED STATES PATENTS 1,178,939 4/1916 ODonnell 52-688 1,457,610 6/1923 White 52688 1,659,795 2/192'8 White 52684 1,769,465 7/1930 Rippstein 52-688 1,850,400 3/1932 Lampert 52-688 2,281,946 5/ 1942 ONeill 52-678 2,349,399 5/1944 Awbrey 52686 2,754,674 7/1956 Malsbury 52723 FOREIGN PATENTS 1,229,466 3/1960 France.

876,459 5/ 1953 Germany.

688,989 3/1953 Great Britain.

715,563 9/ 1954 Great Britain.

FRANK L. ABBOTT, Primary Examiner.

JACOB L. NACKENOF F CHARLES E. OCONNELL Examiners.

I. L. RIDGILL, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1178939 *Aug 18, 1915Apr 11, 1916John R O'donnellBar-chair used in concrete construction.
US1457610 *Jan 29, 1921Jun 5, 1923White William EConcrete spacer
US1659795 *Jun 4, 1926Feb 21, 1928Kalman Steel CoBar chair
US1769465 *May 27, 1929Jul 1, 1930Laclede Steel CompanyReenforcing unit for concrete beams
US1850400 *Jun 21, 1930Mar 22, 1932Universal Form Clamp CoBar support and spacer
US2281946 *Feb 25, 1939May 5, 1942Poirier & Mclane CorpScreed support
US2349399 *Mar 23, 1942May 23, 1944Powell Awbrey WilliamReinforcing bar support
US2754674 *Mar 2, 1953Jul 17, 1956Malsbury Kenneth CReinforced concrete beam support
DE876459C *Jul 1, 1939May 15, 1953Dyckerhoff & Widmann AgAbstandhalter fuer Stahlbeton-Bewehrungsstaebe
FR1229466A * Title not available
GB688989A * Title not available
GB715563A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3488907 *Dec 14, 1967Jan 13, 1970Aberg Anders BertilRust protection and distance device for reinforcing rod chairs
US4080770 *Mar 17, 1977Mar 28, 1978Sandor VighHigh chair spacer
US4249354 *Mar 5, 1979Feb 10, 1981Wynn Gayle BReinforced insulated wall construction
US4441527 *May 27, 1981Apr 10, 1984Tolliver Wilbur EConcrete pipe reinforcement spacer bar
US4467995 *Jul 30, 1981Aug 28, 1984Tolliver Wilbur ESpacer bar and related method for concrete pipe manufacture
US4744190 *Mar 7, 1986May 17, 1988Paul CouwenbergsSpacing retainer including locking means for reinforcements
US5363618 *Mar 22, 1991Nov 15, 1994Underwood Daniel CConstruction site safety
US6772571 *Aug 19, 2002Aug 10, 2004Felix L. SorkinUpper beam bolster for use in construction
US7900880Nov 29, 2006Mar 8, 2011Itw Construction Products Australia Pty LtdLifting anchor support
Classifications
U.S. Classification52/688
International ClassificationE04C5/18
Cooperative ClassificationE04C5/18
European ClassificationE04C5/18