US2080879A

US2080879A - Reenforcing means for concrete

Info

Publication number: US2080879A
Application number: US105645A
Authority: US
Inventors: George H Reed
Original assignee: UNIVERSAL FORM CLAMP CO
Current assignee: UNIVERSAL FORM CLAMP CO
Priority date: 1936-10-15
Filing date: 1936-10-15
Publication date: 1937-05-18
Anticipated expiration: 1954-05-18

Description

May 18, 1937. H REE 2,080,879

REENFORCING MEANS FOR CONCRETE Filed Oct. 15, 1956 Patented May 18, 1937 UNITED STATES 2,080,879 REENFORCING MEANS Fon CONCRETE George H. Reed, Chicago, 111., assignor to Universal Form Clamp 00., Chicago, 111., a corporation of Illinois Application October 15, 1936, Serial No. 105,645

5 Claims.

This invention relates to concrete reenforcing devices especially the type known in the trade as sofiit clips which are attached to the I-beams, channels, or other structural shapes in the construction of concrete beams and columns.

A soffit clip of this general class is shown in my Patent No. 1,801,879 issued April 21, 1931. These devices are usually attached to the structural shape before the temporary forms are erected and they remain embedded in the concrete to strengthen the concrete, particularly the soffit portion of the beam. The device shown in said patent has proven highly successful in reeniorcing the soflit slab of the beam but in view of the fact that it did not project beyond the, edges of the structural shape it was not of much value in reenforcing the corner slabs.

The main objects of this invention are to provide an improved reenforcing device for beams and columns which is adapted to reenforce the corner slabs as well as the soiiit; to provide a device of this kind having improved hooks for attachment to the structural shape and for properly positioning the device in the form; and to provide an improved sofiit and corner clip which will not become accidentally displaced during the tamping or puddling of the concrete.

An illustrative embodiment of this invention is shown in the accompanying drawing, where- Figure 1 is a transverse section of a beam mold showing an improved reenforcing device attached to the lower flange of an I-beam;

Figure 2 is a side elevation and Figure 3 is a top plan of a section of one of the improved devices;

Figure 4 is an enlarged perspective of one of the clips and a portion of the tie wire.

In the construction shown, the improved reenforcing device is applied to a structural I-beam l around which the usual temporary form 2 is erected for constructing the concrete beam and the floor slab.

The improved reenforcing device comprises a series of clips 3 which are suspended from the lower flange of the I-beam and which are secured at intervals to a longitudinal tie wire 4, on the top side of the latter.

Each of the clips comprises a single piece of wire which is bent to form a pair of divergent arms 5 which are brazed to the tie wire at their juncture, as shown at 6. The bend at the juncture is rounded considerably more than that shown in my previous Patent No. 1,801,879 so as to avoid rupture at this point which might otherwise occur due to crystallization.

The outer'ends of the divergent arms 5 have extensions bent inwardly in the plane of the arms to form a pair of arms 1, and on the free ends of arms 1 are further extensions bent to form a pair of substantially U-shaped hooks formed by sections 8, 9 and Ill which are adapted to engage respectively over opposite edges of the bottom flange of the structural beam. These hooks are located in substantially a single plane which is disposed normal to the plane of the divergent arms 5.

The span of the divergent arms 5 is considerably greater than that of the hooks so that when the device is attached to the beam, the junctures of the arms 5 and I are positioned considerably beyond the side edges of the beam, as shown in Fig. 1.

It will also be noted that the sections It extend substantially to the Web of the I-beam so as to insure against accidental displacement.

It is also noted that by attaching the clips to the top side of the longitudinal tie wire 4 (instead of to the under side as in my former Patent No. 1,801,879), the tie wire supports the clips when the concrete is poured and puddled' or tamped, and prevents the detachment of the clips from the structural member during these operations.

These clips are expansible and contractable to some extent so as to be adapted for use in connection with beams of various sizes.

The operation of these improved reeniorcing devices is believed to be obvious from the foregoing description.

I claim: a

1. A concrete reenforcing clip for attachment to a structural shape comprising a single piece of wire bent to form a pair of divergent arms located in substantially a single plane, the outer ends of said arms having extensions bent to form a pair of spacing and attaching hooks adapted to engage respectively over opposite edges of the shape, said divergent arms having a substantially greater span widthwise of the shape than said hooks whereby said arms project laterally beyond the side edges of the structural shape.

2. A concrete reenforcing clip for attachment to a structural shape comprising a single piece of wire bent to form a pair of divergent arms located in substantially a single plane, the outer ends of said arms having extensions bent to form a pair of oppositely disposed substantially U- shaped spacing and attaching hooks located in a common plane adapted to engage respectively over opposite edges of the shape, said divergent arms having a substantially greater span widthwise of the shape and said hooks whereby said arms project laterally beyond the side edges of the structural shape.

3. A concrete reenforcing clip for attachment to a structural shape comprising a single piece of wire bent to form a pair of divergent arms located in substantially a single plane, the outer ends of said arms having extensions bent to form a pair of oppositely disposed substantially U- shaped spacing and attaching hooks disposed in a common plane normal to said single plane and adapted to engage respectively over opposite edges of the shape, said divergent arms having a substantially greater span widthwise of the shape than said hooks whereby said arms project laterally beyond the side edges of the structural shape.

4. A concrete reenforcing clip for attachment to a structural shape comprising a single piece of wire bent to form a pair of divergent arms located in substantially a single plane, the outer ends of said arms having extensions bent to form a pair of spacing and attaching hooks adapted to engage respectively over opposite edges of the shape, said divergent arms having a substantially greater span widthwise of the shape than said hooks whereby said arms project laterally beyond the side edges of the structural shape, and a tie wire connected to said clips at the junctures of said divergent arms for securing said clips in spaced relation to one another lengthwise of said tie Wire.

5. A concrete reenforcing member for attachment to an I-beam comprising a series of wire clips, each of said clips comprising a substantially V-shaped portion having a blunt rounded nose and the ends thereof having extensions bent inwardly and thence upwardly to provide a pair of oppositely disposed substantially U-shaped hooks adapted to engage over a flange of the beam, said V-shaped portion having a widthwise span substantially greater than said flange whereby said V-shaped portion projects laterally beyond the side edges of the flange, and a tie wire secured to the under side of said clips at the apex of the V for securing said clips in spaced relation to one another lengthwise of said tie wire.

GEORGE H. REED.