US1510516A - Chair for concrete bars - Google Patents

Description

W. E. WHITE CHAIR FOR CONCRETE BARS Original Filed July 23. 1921 J2 Tuve/M407 vcrete road work. It is customary Cet. 7,1924.

WILLI `E.

WHITE, OF CHICAGO, ILLINO'IS.

Cnam ron CONCRETE n er.

Application led July 23, 1921, Serial No. 486,973. Renewed March 28, 1924.

To all whom t may concern.'

Be it known that I, WILLIAM E. WHITE, a citizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in a Chair for Concrete Bars, of which the following is a specification.

My invention relates to concrete reinforcement and particularly to a novel chair for use in connection therewith.

One of the objects of my invention is to provide a chair adapted especially for conto lay concrete composing the roads directly' on the soil after it' has been suitably leveled or graded. It has been customary to reinforce such roadways and difficulty has been experienced in providing supports or chairs for the bars previous to the placing of the concrete. In the device of my invention I provide a chair havin supporting legs, portions of which are a apted to enter the soil and provide a stable structure. In addition I provide means for bracing the legs,

such means also constituting the limit stop for determining the extent to which the legs enter the soil. The structure is, of course, adapted for use as a highchair in ordinary reinforcing work -where forms are employed, and therefore is not limited to a use such as that illustrated in the drawings.

The invention will be more readily under'- stood by reference to the drawing, wherein,

Fig. 1 is a side elevation of achair constructed in accordance with my invention, a reinforcing bar being shown in section;

Fig. 2 is a view taken at right angles to that of Fig. l; and

Fig. 3 is a sectional view of the chair on the line 3 3 of `iFig. 1. A

In the drawings it will be seen Ithat the chair consists of a U-shaped member having a horizontal portion 10, and legs the portions 11 of which are inclined and the portions 12 of which are vertical. It also includes members having portions 13 which are inclined oppositely to that of the portions 11, and portions 14. There are` two of such members and they are welded near their upper ends to the horizontal portions 10 of the U-shaped member, the' welding being done at such ploints that portions. 15 project above the orizontal member and provide with the horizontal member a seat within which a reinforcing bar 16 is accom- Inodated. The legs are. braced and bound to ether by means of a generally rectanglar ring or hoop 17 formed of wire, the ends of which are welded together and welded at the corners to the legs. The position of the rectangular bracing member, relative to the lower ends of the legs, determines the extent to which the chair is allowed to enter the soil, this being shown in Figs. 1 and 2. One of the substantial advantages in the use of a chair such as shown is in the ease of application, the simplicity of the device and the certainty of stability under all normal conditions. Being constructed of wire throughout there is no waste metal and it maybe very cheaply constructed.

The form of the braces may vary to a considerable extent and still perform the same functions, audother modifications in 'the shape of the parts may be made without departure from the spirit of Amy invention.

I claim:

l. In a reinforcing chair, the combination of a U-shaped member the longitudinal parts of which constitute legs and the horizontal part of which constitutes a support for a bar, a pair of legs welded to said U- shaped member and having portions projecting above the horizontal part thereof, and bracing means secured to said legs at a point between their ends.

2. In a chair, the combination of a wire bent to provide a horizontal portion and legs, a second pair of' .legs welded at their upper ends to said horizontal portion and having portions projecting above said horizontal portion to ,constitute a seat for a bar, and means joining and bracing all of said legs at a point between their ends.

3. A chair for reinforcing elements of concrete roads, comprising in combination a U-shaped member having a horizontal portion and legs, said legs being arranged in parallelism with their upper portions inclined to the vertical vand their lower extremities in a substantially vertical position, a second pair of legs similarly shaped and welded to said irst pair, means projecting above' the horizontal portion of said first pair of legs for defining a seat for a reinforcing bar, and means for bracing said 4. A chair for reinforcing elements of concrete roads, comprisingin combination a U-shaped member having a horizontal portion and legs, said legs being arranged in parallelism with their upper portions inclined to the vertical and their lower extremities in a substantially vertical position, a second pair of legs similarly shaped and welded to said first pair, means projecting above the horizontal portion of said tirst pair of legs for detining a seat for a reinforcing bar, and means for bracing said legs, said last named means being located at substantially 'the junction of the inclined and vertical portions of said legs.

5. ln a chair for use in concrete road work, the combination of a plurality oit legs having their upper ends inclined to a central meeting point and the lower ends ot' the legs in a vertical position, portions of certain ot said legs projectin above portions o the other legs whereby to constitute a seat for a reinforcing rod, and bracing and joining means located at the junction between the inclined and vertical portion of. said legs.

6. ln a chair, the combination of a U- shaped member composed oli wire and having a horizontal portion and two legs, a second pair of legs welded at their upper ends to said horizontal ortion and having projections above said lhorizontal portion, and a wire ring of substantially the oontonr of said legs at an intermediate point inthe length thereof and welded to said legs to serve as bracing means therefor.

7. ln a device olf the class described, the combination of a wire structure providing a seat tor a reinforcing member at the npper end ot the device, and braces between the legs and locatedat a point between the ends thereof, said legs extending vertically relative to the support fior the device, said braces having the double function of bracing the legs and acting as limit stops 'lor the downward motion ot the device when placed in soil.

Signed at Ghicago, lllinois, this 19th day oil duly, l92l,

WlLlLlAM ld. Wltlll'lFlE.

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