US1127995A - Reinforced concrete construction. - Google Patents

Description

W. B. HOUGH.

REINFORCED CONCRETE CONSTRUCTION.

APPLICATION FILED D110. 30, 1911. k

Patented Feb. 9, 1915.

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B. HOUGH, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO PATENTED DEVICES COMPANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE.

REINFORCED CONCRETE CONSTRUCTION.

Specification of Letters Patent.

Patented Feb. 9, Mill-5.

Application filed December 30, 1911. Serial No. 668,64i0t.

To all whom it may concern:

Be it known that 1, WILLIAM B. HoUeH, a citizen of the United States, residing at Chicago, in the county of'Cook and State of Illinois, have invented certain new and useful Improvements in Reinforced Concrete Construction, of which the following is a specification.

This invention relates to means for spacing reinforcing bars at desired distances apart and at the proper distance from the cause the lower face of said member will then be exposed upon the lower side of the slab. ll avoid these difliculties, first, by 10- eating the connecting member so close to the formwork that if said member be stepped upon it will not be deflected so far as to cause deformation, but on the contrary it will spring back as soon as the pressure is removed, and, the bars will not be displaced; and, second, by providing means to support the connecting member and the bar-supporting devices out of contact with the formwork, so thatthe connecting member and the bar-supporting devices shall be embedded in theconcrete. v

A further object is to strengthen the construction of the bar-supporting devices.

In the accompanying drawings, Figure 1 is a fragmental top plan view. Figs. 2, 3, 4, and 5 are fragmental side elevations of alternative forms.

The letter. A denotes the formwork or decking, and B the reinforcing bars. Said bars are spaced apart by means of a suitable number of devices embodying my invention, only one such device being shown in Fig. 1. Said device comprises a longitudinal or connecting member 1 herein shown as formed of hoop iron. Thebars aresupported upon chairs 2 of suitable construction. The form of chair selected for illustration consists of folded metal which, if desired, may be integral with the longitudinal connecting inember, as. shown in Figs. 2,. 3 and 4, or it may be formed separate therefrom, as indicated in Fig. 5. The

chair herein illustrated consists of a middle leg or gage portion 3 and side portions 4 connecting the upper part of the gage with the longitudinal member. In the form of chair shown in Fig. 2, the lower end of the gage 3 is substantially flush with the lower side of the longitudinal member.

The longitudinal member 1 and the chairs 2 are supported at aslight distance from the formwork by means of spacer elements 5 which may be formed separately from the longitudinal member and the chairs, as in Figs. 2,3 and 4, or may be integral with the longitudinal member as in Fig. 5; One of the spacer elements 5 is located under each chair, and is of sufficient length to extend from one side of'the chair to the other. The spacer element is secured in place in any suitable manner, as by welding the longitudinal .member and the spacer element together at m. The latter thus serves to tie the sides of the chair together and 'prevent spreading thereoffi The spacer ele ment is made of suflicient height to support the chair and the longitudinal member at the desired distance from the formwork, as by forming a suitable number of bends or folds 6 in the hoop iron or sheet metal from which the element is constructed, said bends projecting downwardly to rest upon the iormwork at a point or points below the Fig. 3 illustrates an alternative construction wherein the gage 3 is extended below the plane of the longitudinal member 1, the spacer element 5 having a bend or socket 7 therein in which the gage rests. The spacer element 5 is welded or otherwise secured to the longitudinal member 1 at :12. It will be seen that the gage 3 is supported solidly the chair are turned outwardly and are.

suitably secured to the longitudinal member 1, preferably by welding. In this form the means for spacing the body of the longitudinal member from the formwork comconstruction comprising a longitudinal mem-.

prises one or more projections bent down- -wardly from the longitudinal member ber, a plurality of bar-supporting chairs extending upwardly from the plane of said member and adapted to support reinforcing bars in a plane spaced from the plane of said member, and: a spacer extending downwardly from the plane of said member beneath each of said chairs for spacing said member from a formwork.

- 2. A gage device for reinforced-concrete construction comprising a longitudinal member, a plurality of chairs on said member each adapted to support a reinforcing bar in a plane spaced away in one direction from the plane of said member, and a spacer for each chair extending in the opposite direction from said member for spacing the latter away from a formwork, one of the two last mentioned elements being formed integral with said longitudinal member.

3. A gage device for reinforced-concrete construction comprising a metallic band, an

integral bar-supporting chair bent up there from and arranged to support a reinforcing bar in a plane above and spaced from the plane of said band, and a spacer formed separate from and secured to said band beneath said chair and serving to space the body of said band from a formwork.

4. A gage device for reinforced-concrete construction consisting of a metallic band, bar-supporting chairs extending upwardly from the plane of the band and comprising a gage and two side portions at opposite sides of the gage extending downwardly from the top of the gage to the plane of the band, and a spacer having a socket adapted to receive the lower end of said gage and serving to space said band away from a formwork. 4

iza-pee 5. A gage device for reinforced concrete construction consisting of a longitudinal member, a series of chairs on said member extending upwardly therefrom and arranged to support reinforcing bars in a plane above and spaced from the plane of said member, and means adapted to rest upon a formwork and space said member a short distance above the face of the formwork, whereby said member will not be permanently deformed when depressed into engagement with the formwork and will be embedded in the concrete when poured.

(3. A gage device for reinforced concrete constructioncomprising a series of chairs each consisting of a central V-shaped leg and two side portions extending downwardly on opposite sides from the top of said leg, each chair being adapted to support a reinforcing bar at-the proper distance from a formwork, a longitudinal member joining the series of chairs and lying in a plane between and spaced from the plane of the reinforcing bars and the face of the formwork, and a spacer beneath each chair adapted to engage the formwork and hold said member in such spaced relation,-whereby the member will not be deformed When forced against the formwork and will be ,embedded in the concreteewhen poured.

7. A gage device for reinforced concrete construction consisting of a metallic band, a series of bar-supporting chairs thereon, each of said chairs comprising a central gage or leg, and side portions extending downwardly from the upper end of said leg to the plane of said band, the lower end of said leg projecting below the plane of said band.

8. A gage device for reinforced-concrete construction consisting of a metallicband, a plurality of bar-supporting chairs thereon, each of said chairs comprising a central leg or gage, and side portions extending downwardly from the upper end of said leg to the plane of said band, and means upon which the lower end of said leg rests, said means serving to space the body of said band away from a formvvork.

In testimony whereof I afiix my signature in presence of two witnesses.

WILLIAM B. HOUGH.

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