US2157275A - Bar support and spacer - Google Patents

Description

M3379, 1939- w. P. AWBREY 2,157,275

BAR SUPPORT AND SPACER Filed Aug. 1, 1938 -/Z W 7E'NVENTOR,

ATTORNEYS.

Patented May 9, 1939 UNITED STATES EATENT OFFICE Application August 1,

Claims.

This invention relates to new and improved means for supporting and spacing the reinforcing bars used in concrete construction.

The main objects of this invention are to provide a bar support and spacer that has leg members constructed by bending a straight wire adjacent one of its ends to produce a short and a long leg terminating in a common plane; to provide a sturdy andstable bar support and spacer from a minimum amount of material; to provide a simple and economical reinforcing bar support and spacer for use in concrete construction wherein the concrete is vibrated during the forming and positioning of the concrete; to provide a bar support and spacer of simple structure that will not easily become entangled when thrown together in bulk.

Other objects and advantages of this invention will appear during the course of the detailed specification, referring to the drawing wherein:

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

Fig. 2 is a side elevation of the support and spacer shown in Fig. 1 With reinforcing bars shown in dotted lines in the operative position.

Fig. 3 is an end view of the device shown in Fig. 2.

Fig. 4 is a plan view of the device as shown in Fig. 2.

Fig. 5 is a perspective view of the support and spacer for use as a continuous high chair.

Fig. 6 is a side elevation of the modified form shown in Fig. 5; and,

Fig. 7 is an end elevation of the device shown in Fig. 6.

Throughout the several views like reference characters designate similar parts and the numeral It is a longitudinally supporting rod. While this rod has been shown as the common- 1y used round drawn yet any of the various shaped rods new in general use might be substituted therefor, without departing from the spirit of the invention.

The leg member I2 is made by bending a straight wire at 54 adjacent one of its ends to form a short leg I6 and a long leg I8. The angle between the two legs is preferably an acute angle in order to produce a strong and stable struc 50 ture. These leg members l2 are welded at to the rod Ill at spaced apart intervals. The spacing of these leg members may be regular or irregular and at different distances to facilitate the proper spacing and supporting of various types of reinforcing requirements.

1938, Serial No. 222,422

As shown in the preferred form, Figs. 1 to i, it will be noted that the point of weld 28 is intermediate the ends of the long leg I8 so that a portion of the leg member extends above a plane parallel with the plane of support and tangent to the upper side of the rod l0, thereby presenting spacing shoulders between which the reinforcing bars 22 (shown in dotted lines) may be positioned.

The leg members are secured in staggered re lation so that adjacentlong legs l8 extend in opposite direction so that the load is properly distributed and the spread of the leg members is sufficient to prevent tipping over when the vibrating machine is being used, or for any other reason. The welding of the parts may be varied to produce projections above the rod and desired height; furthermore, any desired change in the height of rod In between certain limits, above the supporting surface may be obtained by proper positioning of the leg members relative to rod l0.

Since this type of bar support and spacer is designed especially for use in supporting and spacing beam bars, it has been found convenient to extend the rod I0 at each end beyond the end leg members so as to space them from the side wall of the beam, as the rod snuggly fits transversely in the beam forms.

Referring now to the modified form shown in Figs. 5, 6 and 7. wherein the rod I0 is attached to the leg members substantially at the bend, it will be noted that this type of structure presents a continuous high structure which is suitable for use to support top steel in slabs and bent up bars at beams or columns. The substantially vertically disposed short legs iii adjacent rod It, give a maximum load carrying capacity while the outwardly inclined long legs is provide a wide base to prevent tipping over when setting the reinforcing steel.

When the relation of the supporting rod and the leg members are positioned as shown in Figs. 5, 6 and '7, it is desirable to position the reinforcing bars 22 on the rod In above certain of the leg members [2, and secure the parts together by tie wires 24, as indicated in dotted lines.

It is possible to weld the leg members in spaced apart relation corresponding with any desired spacing of the reinforcing bars, however. standard spacings of the leg members may be used regardless of the particular spacing of the reinforcing bars.

It is apparent that the invention as described,

provides a reinforcing bar support and spacer which presents a sturdy and rigid structure with a minimum amount of material, as the simple operation of bending the leg members is very inexpensive, and with the supporting rod, presents a structure whereby the height of the supporting may easily be varied between certain limits, by simply adjusting the legs relative to the rod before welding.

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 a longitudinal supporting rod; a plurality of leg members secured to said rod in spaced apart parallel relation to support said rod above a planar surface, each of said leg members consisting of a straight wire bent adjacent one end to form a short leg and a long leg whereby the shorter leg makes a greater angle to said supporting planar surface than does the longer leg when the support and spacer is in the operative position.

2. A bar support and spacer comprising a longitudinal supporting rod, a series of like bent wire leg members secured at the point of bending to said supporting rod in spaced apart relation, each of said leg members having a relatively short and along leg so related that all terminate in a common plane with the long legs positioned alternately on opposite sides of said supporting rod.

3. A bar support and spacer comprising a longitudinal supporting rod, a series of bent Wire leg members, having a short leg and a long leg welded at the point of bend to said supporting rod in spaced apart relation and being positioned so that the short legs of adjacent leg members are in like relation on opposite sides of the vertical central plane of said supporting rod and entirely below said supporting rod when the device is in the operative position on a horizontal supporting surface.

4:. A bar support and spacer comprising a longitudinal supporting rod, a series of bent wire leg members, each having a long leg and a short leg and being welded to said supporting rod in spaced apart relation and with the outer leg members spaced apart from adjacent ends of said supporting rod, the extremities of the legs of each of said leg members being positioned to terminate in a common plane below said supporting rod while the apexes of the leg members extend alternately above said supporting rod at its opposite sides.

5. A bar support and spacer comprising a longitudinal supporting rod; a series of angled wire leg members having a long leg and a short leg disposed at an acute angle to each other, said supporting rod being secured to the long legs of spaced apart leg members, whereby all the legs of the leg members terminate in a common plane below said supporting rod, with the upper portion of adjacent leg members extending thereabove at alternate sides thereof to form a longitudinally disposed trough.

WILLIAM POWELL AWBREY.

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