US2409342A - Rod support for reinforced concrete structures - Google Patents

Description

Oct. 15, 1946.

r J. J. CASSIDY ROD SUPPORT FOR REINFORCED CONCRETE STRUCTURES Filed May 15, 1944 2 Sheets-Sheet l 1NVENTOR 0a. 15, 1946. J. CASSIDYQ 2,409,342

ROD SUPPORT FOR REINFORCED CONCRETE STRUCTURES Filed May 15, 1944 2 Sheets-Sheet 2 Patented Get. 15, 1946 ROD SUPPORT FOR REINFORCED CONCRETE STRUCTURES Joseph J. Cassidy, Fort Wayne, Ind.

Application May 15, 1944, Serial No. 535,606

6 Claims. 1

This invention relates to rod supports for reinforced concrete structures such as for use in assembling rods in spaced arrangement over a floor or adjacent the walls of a form in which a body of concrete is to be invested, so the rods are sustained in definite predetermined positions during the setting period of the concrete body.

An object of the invention is to provide various preshaped parts that are conveniently assembled at the situs toform supports for the reinforcing rods in any desired arrangement of spacing apart from each other above a floor or within a form inwhich concrete is to be molded.

Another object of the invention'is to provide easily assembled parts for securing reinforcing rods firmly in any desired relative arrangement in such manner as requires but few operations and tools.

A further object of the invention is to construct the parts so as to be applicable selectively to reinforcing rods of various dimensions.

And a still further object of theinvention is to so construct the parts as to permit rapid assem blage of the reinforcing rods 'in any desired spaced relationship with each other and position in the form in which the concrete is, to be molded.

Other objects and advantages of the invention appear in the following description.

An illustrative embodiment of the invention is shown in the accompanying drawings, in which Fig. 1 is a fragmentary perspective view of an assemblage ofreinforcing rods, and supports for the rods arranged in connectionwith spacers for the supports;

Fig. 2 is a fragmentary elevational view drawn to an enlarged scale showing a section of Fig. l on the line :ca: thereof;

Fig, 3 is atop plan view of one of the members of an adjustable clasp for holding a reinforcing rod;

Fig. l is a top plan view of another member of the clasp;

"Fig. 5 is a detail side elevational view of a modified form of the clasp;'

Fig; 6 is an end elevational view of the ture shown in Fig. 5, partly in section;

Fig. 'l is a perspective view of an adjustable stool for use where one series of reinforcing rods are supported in a plane above another series of rods; and

Fig. 8 is a side elevational view showing another modified form of the invention, parts being in section.

struc- Ill consists of metallic strips |4I5 having perforations l6 made therein at frequent intervals uniformly spaced apart from each other, constituting spacers; supports for securing the spacers in planes suitably distant from the floor A or Walls of a form, constituting stools I1; and members constituting clasps l8that are mounted in connection with the strips and stools by which reinforcing rods Iii-20 are sustained in a selected definite arrangement.

The spacers preferably are made of fiat strips of metal suitable in length to extend from one end to the other of the floor or form for reception of a concrete mixture, or from one side thereof to the other as required.

The stools preferably areformed of sheet metal, shaped to have parallel legs 2! spaced apart from each other, having inturned shoulders 22 and terminal outturned feet 23, there being made a slot 24 in each foot for the reception of a nail (not shown) or other means for securing the feet in place against the floor or wall of the form. The legs also have outwardly projecting prongs 25 for ahe reception of a binding wire when such is use The clasp preferably consists of two members 26 and 21, the member 26 consisting of a sliding plate 28 with an opening 29 therein and provided with an upturned jaw 30 having a notch 30 and a downwardly inclined prong 3| that projects from its outer face. The other member 21 has a hat base 32 provided at one end thereof with an upturned jaw 33 having a notch 33 and laterally projecting prongs 34. The major por tion of the base 32 is made sufficiently narrow as to be received withinithe opening 29 of the member 23 when the two members are assembled together, and permit longitudinal sliding movement of the plate 28relative thereto. Thus the opposing jaws 30 and 33 are readily adjustable toward and from each other upon sliding movement of the plate 28. The clasp members are positioned upon the upper face of the corresponding spacer and the base 32 is secured in a selected position thereon by any suitable means such as a bolt 35 that is applied through an opening 38 in the base and through a selected one of the perforations It in the space and also through the upper end of the corresponding stool ll. In this manner the member 21 of the clasp, the spacer and the stool are firmly secured together, while the other member 26 is movable to permit adjustment of the jaws of the clasp toward and from each other to accommodate reinforcing The illustrative embodiment of the invention rods of various diameters.

The stools 2| vary in height so the spacers and outturned bifurcated ends 40 and have outwardly projecting prong or hooks 4|. In this instance the stool 42 is similar to that shown in Fig. 2 and is secured in connection with a spacer l5 and the clasp 31 by means of a bolt 43.: ,A rein-. forcing rod 44 is received betweenthe arms of the clasp by pressing it past the shoulders 39 and is further secured in place by means of a .wire 44' that is looped around the prongs 4| and drawn through the slots 45 of the bifurcated ends and finally entwined about the extremities of the arms.

In Fig. 8 is illustrated a form of the invention in which there is provided a stool TI and spacer 12 similar to those shown in Fig. 1. In this instance a -U-shaped chair Z3 i secured in connection with the spacer and the stool by means of a bolt 14. The arms 15 of the chair have outwardly extending spurs 16 that have locking engagement with an overlying clasp T! when placed astride the top of the chair, there being provided latch openings 18 in the arms of the chair for reception of the spurs. In this form of the invention a reinforcing bar (not shown) is placed in the chair between the arms thereofand is held therein by applying the clasp TI to the chair.

In some instances it is desirable to support a group of reinforcing rods arranged in planes above another group or at various elevations. For this purpose there is provided, a shown in Fig. '7, an adjustable high stool consisting preferably of a tubular post 19 having feet 80 at its lower end, its upper end portion being provided with a longitudinal slot 8|, one wall of which has made therein notches 82. Within the post 19 is movably disposed a prop 83 having a projecting pin 84 that is selectively received in the notches according to thevertical adjustment of the prop in the post. On top of the prop is secured a suitable fixture 85 adapted to be connected with an overlying spacer strip 86 and clasp 81, by any suitable means such as a bolt 43 shown in Figs. 5 and 6, or the bolt 35 shown in Fig. 2. The type of clasp used in connection with the adjustable high stool is immaterial, the clasp 81 being similar to that shown in Figs. 5 and 6 as exemplary. In this manner a reinforcing rod 88 is supported in various selected elevations according to adjustment of the prop 83.

Operation In utilizing the invention, convenience is afforded by supplying the artisan with stools, spacer strips, clasp and the fastening means therefor in suitable sizes and quantities necessary to construct the reinforcing fabrication required, so that the various parts may be assembled together with the reinforcing rods completely on the situs. Because of the particular construction of the stools, 'clasps and spacers, their connections with each other may be arranged so as to permit the reinforced rods to be spaced and held in various arrangements upon the fioor or in the form in which the concrete mixture (not shown) is shaped. Thus, the tools and clasps are read ily connected in spaced relation with each other and positioned on the floor or secured to the walls of the form suited to the limitations of space afforded thereby as the case may be.

Upon investment of the concrete mixture the complete assemblage including the stools, spacers, clasps and the connecting means therefor together with the reinforcing rods supported thereby become imbedded within the concrete mass to form a component part of the finished concrete structure.

Variations from the particular construction above disclosed may be resorted to by the exercise of skill in the art, without departure from the scope of the invention, and the following claims are intended to be inclusive of such variations.

What I claim-is'i '1. A'reinforcing rod support and spacer therefor consisting of a stool having legs provided with outwardly extending prongs and slotted feet for accommodation of a fastening means, a spacer, disposed on said stool, consisting of a metallic strip having spaced apart perforations, a clasp having two interconnected members, one of which members consists of a sliding plate having an opening therein and provided with an upturned jaw, and the other member consisting of a base disposed in the opening of said sliding plate and having another upturned jaw, said jaws being oppositely disposed and having slots and outwardly extending prongs for accommodation of a binding wire, and means for securing oneof said clasp members, spacer and stool together in definite positions relative to each other, and said sliding plat being movable to permit relative adjustment of said jaws to accommodate therebetween reinforcing rods of various sizes.

2. A reinforcing rod support and spacer there- 40 for consisting of a'stool having legs terminating with feet adapted to be secured to the floor or wall of a form, a spacer supported on said stool consisting of a metallic strip having spaced apart perforations, a clasp having two interconnected members, one of which members consists of a plate having a jaw, and the other member having a base on which said plate has guided movement and being provided with another jaw, said jaws having slots and outwardly extending prongs for accommodation of a binding wire, and means extending through said base, a selected one of the perforations in said spacer and through the stool to secure same-together in definite positions relative to each other, the arrangement being such that by movement of said plate said jaws are adjusted to accommodate therebetween reinforcing rods of various sizes.

3. A reinforcing rod support and spacer therefor consisting of a stool having legs terminating with feet adapted to be secured to the floor or wall of a form, a spacer supported on said stool consisting of a metallic strip having spaced apart perforations, a clasp provided with spaced apart arms having inturned shoulders and outwardly projecting prongs for accommodation of a binding wire, and means extending through said clasp, a selected one of the perforations in said strip and through said stool to secure same together in definite positions relative to each other.

4. A reinforcing rod support and spacer therefor consisting of a stool having members adapted to be secured to the floor or wall of a form, a spacer supported on said stool, a clasp disposed on said spacer opposite said stool adapted to engage and hold a reinforcing rod, and means extending through said clasp, spacer and stool to secure same together in definite positions relative to each other.

5. In a reinforcing rod support and spacer therefor, a spacer consisting of a perforated strip, a stool to support said spacer, a member having spaced apart arms to seat a reinforcing rod therebetween, a clasp having locked engagement with said arms to confine said rod in place, and

. means for securing said member and. stool tostools having members adapted to be secured to the floor or wall of a form, a spacer consisting of a perforated strip supported on said stools, clasps disposed on said spacer opposite said stools respectively, adapted to receive reinforcing rods, said clasps having upturned arms with notched ends and, provided with outwardly extending prongs, means connecting said ciasps and corresponding stools through selected perforations in said strip, and a wire entwined through the notches in each ciasp around the prongs thereon and over the reinforcing rods positioned therein.

JOSEPH J. CASSIDY.

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