US2272761A

US2272761A - Bar support and spacer

Info

Publication number: US2272761A
Application number: US281126A
Authority: US
Inventors: Awbrey William Powell
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-06-26
Filing date: 1939-06-26
Publication date: 1942-02-10
Anticipated expiration: 1959-02-10

Description

Feb. 10, 1942. w AwBREY 2,272,761

BAR SUPPORT AND SPACER Filed June 26, 1959 ATTORNEYS.

Patented Feb. 10, 1942 4 Claims.

This invention relates to improvements in a bar support and spacer of which the following is a specification.

The principal object of this invention is the provision of a bar support and spacer wherein a ridge wire, chair, and tie-wir are welded together at a common point.

Another object of the present invention is the provision of a bar support and spacer having an elongated ridge member, corrugated at spaced apart intervals, to receive reinforcing bars, a chair positioned beneath each of said corrugations, and a tie-wire secured intermediate its ends between said ridge member and the respective chairs whereby the bars are secured in their respective corrugations.

Other objects are simplicity and economy of construction, ease and rapidity of operation, and adaptability to nesting together for shipment.

Reference will now be had to the drawing wherein:

Figure 1 is a perspective view of a bar support and spacer embodying this invention.

Fig. 2 is a sectional view taken on line II-II of Fig. 1.

Fig, 3 is a sectional view taken on line III-III of Fig, 2.

Fig. 4 is a view of the parts spaced apart prior to the welding operation.

Fig. 5 is a fragmentary side view of the device in the normal position.

Fig. 6 is a perspective view of a plurality of rod support and spacer members, shown in position as used with astirrup assembly.

Fig, '7 is a perspective view of a modified form of the device, wherein the ridge wire is straight throughout its length; and

Fig. 8 is a cross sectional view of the modified support and spacer with a reinforcing bar shown in position thereon.

Throughout the several views, like reference characters designate similar parts, and the numeral I0 is an elongated ridge wire having spaced apart depressions or corrugations I 2. The corrugations are formed to receive a reinforcing bar [4 which can be spaced to meet the requirements of the builders specification.

A chair IE is welded to ridge wire Ill beneath each corrugation I2, thus presenting a very rigid support of the reinforcing rod at a properly spaced distance from the form boards on which the support and spacer rests. This chair is shown with a short leg l8 and a long leg 20, each having a foot 22 disposed substantially parallel with the form supporting surface. Chairs it are preferably rigidly secured to the ridge wire in by welding.

It is very evident that the straight wire portion 24, joining the corrugations, is raised above the surface of the form a distance as great, if not greater, than the distance between the reinforcing bar and the adjacent form Wall, so that coarse gravel in the concrete aggregate being used, can pass thereunder during the pouring operation, thus eliminating to a large degree, the formation of objectionable voids or pockets.

A tie-wire 26 is securely fixed atits middle portion 28 between ridge wire l0 and chair Hi to present two arms 30, which are adapted to extend about the reinforcing rod I4 and be secured together at 32 by twisting or interengaging by bending. It will be noted that the normal position of arms 30 is in spaced apart, parallel relation to the ridge wire, thus making the assembly compact and the arms easily accessible during the assembling of the parts.

Referring to Fig. 4, the ridge wire is shown transversely grooved at 34, to receive tie-wire 26. The parts are moved together and a welding heat applied, whereby the ridge wire, chair and tie-wire are secured in fixed relative relation. When the parts are so positioned during the welding operation, the tie-wire is not burned in two, as might result if no groove was provided. The chair might be notched to receive the tiewire without departing from the spirit of the invention.

It will be observed that in Fig. 6, the support and spacer is shown as used for supporting stirrups in a concrete beam construction. In this assembly, the support and spacer A is positioned to rest on the bottom form board D, to receive the central portion of the stirrup S, thus supporting the stirrup and the reinforcing bars above said form board a predetermined distance.

When the support and spacer members B and C are used to space the stirrups apart from the respective side walls of the form, chairs l6 are secured to the side form members by means of staples 3B. The stirrups are usually spaced apart at varying distances, thus making it essential that the corrugations in the various ridge wires, be similarly spaced to maintain the stirrups in spaced apart parallel relation, perpendicular to the floor plane.

It is apparent that when the stirrups are thus joined together, there is produced a resultant reinforcing assembly that will maintain the associated parts in fixed relative relation during the pouring operation, and the support and spacing member will also serve as reinforcing members when the concrete structure is complete.

When the ridge member 31 is used as shown. in Figs. '7 and 8, the reinforcing bars are secured in proper spaced apart relation by means of the tiewires 30. In this structure it will be noted that the ridge wire extends below the reinforcing bars throughout their lengths. This type of ridge wire may be used when the chairs are sufiiciently high to permit of free flow of aggregate between the form and the ridge wire.

Various slight variations might be made in the structure without departing from the spirit of the invention.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. A bar support and spacer comprising an elongated wire member corrugated at spaced apart intervals; a chair welded to said wire beneath certain of said corrugations to present a transversely disposed hole therebetween; and a tie-wire at each chair passing through said hole and secured between said chair and said elongated wire, adapted to be secured about a bar positioned in the adjacent corrugations, whereby the bar is secured against movement longitudinally of said elongated member.

2. A bar support and spacer comprising an elongated, ridge member having unequally spaced apart depressions with a transverse notch formed in the underside of said ridge member at the lowest point of each of said depressions; two legged chairs secured transversely to said ridge member below each of said depressions respectively to cover the notches therein; and a tiewire at each chair positioned in the notch formed in said ridge member and secured between the respective chairs and the adjacent depression, whereby a bar may be securely anchored in each of said depressions.

3. A bar support and spacer comprising an elongated wire having spaced apart transverse recesses formed along one of its sides, a chair welded to said elongated wire at each of said recesses whereby openings are formed between said wire and chairs and tie wires respectively, passing through each of said openings and adapted to be secured about bars positioned on said elongated wire directly above said chairs whereby the bars are secured against longitudinal movement relative to said longitudinal wire.

4. A bar support and spacer comprising an elongated wire member having spaced apart depressions formed in its underside, a chair having two legs weld-ed to the underside of said wire at one of said depressions to form an opening therebetween, and a tie wire secured intermediate its ends in the opening formed between said chair and elongated wire.

-WILLIAM POWELL AWBREY.