US2924091A - Placement support for reinforcing rods - Google Patents

Description

Feb. 9, 1960 A. A. HARMER 2,924,091

PLACEMENT SUPPORT FOR REINFORCING RODS Filed July 26, 1955 INVENTOR.

ALBANUS A. HARMER.

ATTORNEYS.

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SUPPORT FOR REINFORCIN G RODS Application July 26, 1955, Serial No. 524,539

3 Claims. (Cl. 72-122) This invention relates to a reinforcing rod support for use in making concrete structures and is for a unique support for this purpose of improved construction-that is convenient to use and which has good inherent stability.

In many types of concrete construction, excavations such as trench-like excavations are dug into the earth. Concrete is poured into the trench to provide a foundation or footer. Frequently it is necessary or desirable to provide one or more reinforcing rods in the concrete at a level above the bottom of the trench.

At the present time the common practice is to place wooden strips across the top of the trench at intervals and hang the reinforcing rod therefrom by wires. This is not only slow and laborious, but in many cases dirt will be knocked into the trenches or the sides of the trenches collapsed, and after the concrete has been poured the wood strips must be removed.

My invention is especially intended for such use, but it may also be used in other cases where concrete is to be poured around reinforcing bars supported at a level where the rod is elevated above the surface onto which the concrete is poured, and it has for its object to provide a simple, inexpensive support that can be set on the bottom of the trench at intervals, and into which the rods may be easily placed.

My invention may be more fully understood by reference to the accompanying drawings, in which:

Fig. 1 is a perspective view of a support embodying my invention;

Fig. 2 is a side elevation thereof;

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

Fig. 4 is a top plan view of the same;

Fig. 5 is a modification showing one modification in perspective; and

Fig. 6 is a perspective view showing another modification.

Referring to the drawings, and first to the present preferred form shown in Figs. 1 to 4, the device is formed of two similar pieces of wire designated generally as 2. The wires each have a vertical or upright portion 3, the top of which is folded or bent to form an upwardly open generally U-shaped hook 4. At the bottom of the post there is an inwardly-extending horizontal portion 5 that is bent outwardly at 6 at an obtuse angle. This outwardlyturned part 6 terminates in a long horizontal section or reach 7 that is parallel with the center line of the base of the support. This portion 7 in turn has an angular section 8 similar to 6 but reversed, the portion 8 in turn having a terminal section 9 that is in line with the horizontal portion 5 and of the same length.

These two wires so formed are reversed end-for-end with respect to each other so that the portion 5 of one extends alongside the terminal section 9 of the other, and these two parts are soldered, welded or otherwise secured together in this relation.

The support thus formed provides a hexagonal base of sutficient length that the ,two books, which are parallel with the plane of the upright leg portions 3 are the desired 2 distance apart and Wide enough so. that the structure a good stability when set in the bottom of the trench. L 'b has is, an 'openloop, his not afleotedby slight es m the earth, and; may even be'trampediinto The supports are placed in the trench at intervals and the reinforcing rdds are' 'setintothei hooks 4;" The rods are held at the pIQger height andgin parallel'relation. The labor ofplacing them is thus made quite easy, and the siip port's tlifnselvesare inexpensive. The concrete is, of course, poured over the supports, and the supports, with the rods, remain in the solidified concrete.

The shape and dimensions of the loop may be varied to suit requirement, but in any case the base is a closed loop of adequate dimensions to have the desired stability and the post is integral with a part of the loop and perpendicular to the-plane of the loop.

In the modification shown in Fig. 5 the support is made of two pieces 12 as described in Figs. 1 to 4 with upright extensions 13 as described, and having hooks 14. In this figure, however, there is a third piece 15 extending lengthwise through the loop. Its ends are soldered, welded or otherwise joined to the two main pieces, the ends of piece 15 extending between the parallel end portions of the two main pieces. The third piece at the middle is looped upward at 16 with the top of the loop being reversely bent to form a cradle 17 into which a third reinforcing rod may be placed. The cradle is in the same plane as the end hooks 14.

In Fig. 6 the support comprises a single piece of wire bent into a square loop 20 with one end of the wire extending to the center of one side of the square and being bent in, in the plane of the loop, as at 21. The other end of the wire is similarly bent in at 22, extending alongside terminal 21, and beyond it to about the center of the loop, where it turns upwardly perpendicularly to the plane of the loop, providing a post 23. The parallel parts 21 and 22 are soldered, welded or otherwise fastened together to give the loop rigidity. At the top of the post the wire is bent to form a hook or cradle 24.

The support shown in Fig. 6 is used where a single strand of reinforcing rod is required to be supported. Of course combinations of the supports of Fig. 1 and Fig. 4, or Fig. 3 and Fig. 4 in wider trenches where more rods or wider spacing of the rods is wanted may be used.

Because the units are formed with a closed loop, they have substantial rigidity even though the wire used is relatively light. Various changes and other modifications are of course within the contemplation of my invention.

I claim:

1. A support of the class described comprising two similar Wire members each having a base portion which is of semi-loop form with a free base terminal at one end and an aligned opposite terminal having a perpendicular extension, the base portion between said terminals being laterally bowed, the two wires being reversed end-for-end relatively to each other with the free terminal of one wire extending parallel with and being joined to the said opposite terminal of the wire whereby the base portions of the two wires are complementary in forming a base in the form of a fiat loop, the perpendicular extension of each wire having a cradle-like hook at its top into which a reinforcing rod may be set, the hooks being in a common vertical plane that coincides substantially with the axis of the base.

2. A support as defined in claim 1 in which there is a third wire in the plane of the hooks with its ends disposed between and secured to the ends of the first two wires, and with its mid portion arched upwardly, the top of the arch-forming portion having a rod receiving cradle therein.

3. A support for reinforcing rods comprising a base formed of two pieces of wire which are bowed laterally in opposite direction to define a loop and which have parallel portions at each end of the bow that lie alongside each other, and a third wire having terminal portions lying between the parallel portions of the first two wires and'which are joined to said portions of the first two wires, the intermediate portion of the third wire defining an arch which is perpendicular to the base and which has a cradle-like recess in the top.

232,403 Herrick Sept 21, 1880 schocnthaler M rt 15 Brown Sept. 14, 1926 Heltzel Mar. 11, 1930 Bitney Sept. 2, 1941 FOREIGN PATENTS France Iune 2, 1922

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