US2021361A - Reenforcing bar support and spacer - Google Patents

Description

Nov. 19, 1935. B 'HILLBERG 2,021,361

REENFORCING BAR SUPPORT AND SPACER Filed Oct. 13, 1933 Patented Nov. 19, 1935 PATENT QFFIE' REENFORCING BAR SUPPORT AND SPACER Bror Hillberg, Chicago, 111., assignor to Universal Form Clamp Co., Chicago, 111., a corporation of Illinois Application October 13, 1933, Serial No. 693,416

4 Claims.

This invention relates to bar supports and spacers and particularly to that type used in supporting reenforcing bars in concrete road work.

Such devices, which have long been in use, usually comprise one or more pieces of wire fabricated to form one or more seats for the reenforcing bars, a horizontal arm forming a spacer for spacing the reenforcing bars the required disstance from the side molds of the road, and a single supporting pin adapted to be driven into the ground for positioning the bars at the required level.

Such prior devices have not been entirely satisfactory because no means was provided to prevent turning of the device. When the concrete is being poured it sometimes flows against the horizontal spacer bar in such manner as to cause a partial rotation of the device around the vertical pin as an axis. This is objectionable be cause it displaces the seats and renders the spacer arms ineffective.

The main objects of this invention are to provide a bar support and spacer having improved means to secure it against turning under the pressure of the concrete; and to provide a device of this kind which is sturdy and which can be readily fabricated.

Illustrative embodiments of this invention are shown in the accompanying drawing, wherein;

Fig. l is a fragmentary vertical section of a road mold showing in side elevation one of the single bar supports.

Fig. 2 is a similar view showing a double support of the type used at the overlapping ends of the reenforcing bars.

Fig. 3 is a similar view showing another type of double support.

Fig. 4 is a fragmentary top plan of the mold on .a reduced scale.

In the constructions shown, the improved bar supports are used for supporting reenforcing bars I disposed horizontally and embedded in the concrete a uniform distance above the ground 2 and spaced uniformly from the vertical side walls 3 which form the molds for the sides of the road.

The improved supports are preferably made of wire which possesses the essential rigidity and which may be bent to the desired shape.

In the constructions illustrated, each of the devices comprises a vertical leg 4 having a prong 5 at its lower end adapted to be inserted in the ground and having its upper end bent laterally to form a horizontal spacer member 5 adapted to position the leg the required distance from the form side 3.

At the bend between the leg and spacer is formed a crook 'i for supporting one of the reenforcing bars. 5

In the three constructions herein shown, the leg is braced by a substantially V-shaped brace. In the form shown in Figure l, the brace has an inclined arm 8 spot welded or otherwise secured to the upper end of the leg d before the latter is 10 placed in the ground, and a horizontal arm 9 adapted to rest on the ground to serve as a gauge or stop for limiting the insertion of the prong 5 into the ground. The upper end portion IQ of the arm 8 serves as one wall of the reenforcing bar seat.

The arm 9 is spot welded or otherwise rigidly secured to the leg 4 at the desired distance from the point of the prong 5 before the latter is placed in the ground and its outer end is bent down- Wardly to form a. second prong ll preferably shorter than, and disposed in substantially parallel spaced relation to the prong 5. The prongs 5 and l I serve as an anchor to secure the device against turning in the ground while the concrete is being poured.

In the construction shown in Figure 2, the brace includes arms 12, and I3 and prong l4 corresponding to the parts 8, 9, and II respectively of the construction shown in Figure '1. However, the upper end of the arm i2 is bent to form a second crook i5 adapted to support a second reenforcing bar, as, for instance, when the bars overlap as shown in Fig. 4.

In the construction shown in Figure 3, the brace includes an inclined arm I6 and a base portion IT. The upper end of the arm i6 is bent to form a spacer part It of inverted U-shape and a horizontal shelf IS. The shelf I9 is adapted to support a second reenforcing bar and the spacer part l8 spaces the two bars the required distance from each other. A second leg 20 is secured to the shelf l9 and base portion I! in substantially parallel spaced relation to the leg 4 and its lower end is adapted to be anchored in the ground to cooperate with prong 5 in securing the device against turning.

The seats for the reenforcing bars in all of these constructions preferably have restricted throats so as to secure the reenforcing bars against accidental displacement.

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

Although but certain specific embodiments of this invention have been herein shown and described, it will be understood that certain details of the constructions shown may be altered without departing from the spirit of the invention as defined by the following claims:

I claim:

1. A reenforcing bar support and spacer comprising a substantially V-shaped brace having one arm disposed horizontally to provide a base, a vertical leg secured to both arms of said brace and projecting downwardly beyond said base to form a prong adapted to enter the ground, a second prong extending downwardly from said base in substantially parallel spaced relation to said leg, the upper porton of said leg having an integral lateral extension forming a horizontal spacer member, and a reenforcing bar seat formed by said leg and the other arm of said brace adjacent said spacer.

2. A reenforcing bar support comprising a vertical leg having a prong at its lower end adapted to enter the ground, a seat at the upper end of said leg for supporting the bar, a horizontal spacer member extending laterally from one side of said seat, a horizontal base member secured to said leg and adapted to rest on the ground to limit the insertion of said prong into the ground, and a second prong depending from said base in spaced relation to said leg to secure said leg against turning in the ground.

3. A reenforcing bar support comprising a verarm parallel with and spaced from said firstnamed prong.

4. A reenforcing bar support comprising a vertical leg having a prong at its lower end adapted to enter the ground, a seat portion continuous with the upper end of said leg, and a horizontal spacer continuous with said seat portion, a V- shaped brace having a horizontal arm forming a base crossing and secured to said leg and an inclined arm crossing and secured to said leg with its upper end extended to form a pair of spaced seat portions, and a second vertical leg secured to one of said spaced seat portions, the upper end of said second leg being extended to form a complementary seat portion and its lower end being extended to form a second prong parallel with and spaced from said first-named prong and secured to and depending from said horizontal arm.

BROR HILLBERC

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