US1014711A - Metal reinforcing and spacing bar. - Google Patents

Description

I A. E. mm. METAL RBINI'ORCING-AND BPAQING BAR.

APPLICATION FILED JAN. 25,1911. I I 1,014,711 1, Patented Jan. 16, 1912.

, To all whom it may concern:

UNITED STATES PATENT OFFICE.

.anrnnn E. m'mmu, ors'r. LOUIS, aussounnassronon 'ro CORRUGATED nan conyarn, or $1. nomamrssomu, A conronnrron or mssoum.

METAL BEINFOBCING AND SPACING BAR.

Patented Jan. 16, 1912.

Application filed January 25, 1911. Serial No. 804,690.

Be it known that I, ALFRED E. LINDAU, a"

citizen of the United States, and aresident of the cityof St. Louis and State of M1s-. souri, have invented a new and useful Improvement' in Metal Reinforcing and Spac ing Bars,of which the following 1s a specification.

My invention relates particularly to 1mprovements in reinforced concrete columns,

' pipes, stacks, tanks or cylinders, but is applicable to any concrete structure in which spiral or looped metal reinforcement, or a plurality of spaced parallel reinforclng bars,

is used 1n connection with longitudinal tension bars. The object of my lnventlon 1s to prov1de an improved means for securing the metal reinforcement and the tension bars in spaced relationship in the forms or molds preparatory to placing therein the matrix of concrete in the process of erectang reinforced concrete columns and like structures.

Another object of my invention is the provision of a simple, secure and rigid mechanical connection between adjacent reinforcing bars, andone which may readily be -made after the bars are placed in the forms.

vA further object of my invention is the production of reinforcing bars, formed by rolling or rolling and punching, which shall be of such shape as to enable the use of a separate spacing means for properly assembling the reinforcement in the forms to be dispensed with. I also desire to produce a tension bar adapted for use as a spacing "means which .is suitable for transportation without being boxed or crated, and which can be shipped in fixed lengths andcutup at the place of use to suit the work in hand.

Other objects of my invention will be more fully set forth in connection with the accompanying drawings forming a part of this specification, and will be more particularly pointed out in the claims.

In the drawings accompanying this speci-- fication, in which like numerals are used to designate like parts throughout the several views: Figure 1 is a section on the line 11 in Fig. 2; Fig. 2 is a partial view in side elevation of two of my improved bars used in connection with spiral reinforcement which is shown partly broken away; Fig. 3

is a partial view in side elevation of my improved tension and spacing bar; and Fig. 41s a section onthe line 4-4 in Fig. 3..

In metal-reinforced concrete columns and similar structures it is customary to use longitudinal tension members arranged near the surface of the column and extending parallel with its longitudinal axis in connection' comes 'distorted or misplaced during the operation of filling in the forms with, concrete, and thus the finished structure is impaired. a

The reinforcing bars illustrated in them:- companying drawing comprise a main body portion having longitudinal ribs'on diametrically opposite sides thereof and transverse ribs arranged at intervals along the surface of the bar and extending from one longitudinal rib to the other. Mounted on one of these longitudinal ribs and extending outwardly therefrom is a thin longitudinal flange 13 which has a series of notches spaced apart along its outer edge. Two'or more of these bars 11 are arranged in parallel relationship and the spiral or looped reinforcement l2 assembled around them with the several loops thereof positioned in the notches 14. These notches are of greater depth than the thickness of the reinforcement, being formed of such depth that the corners of the flanges 13 adjacent thereto' project out beyond the section of greatest Width of the looped reinforcement positioned therein, so that these corners can easily be mashed down orbent in, as shown at 15 in Fig. 2, by a blow from a hammer to embrace the loops and thus secure them in the notches. This is a comparatively simple operation easily carried out by unskilled labor, and insures notonly that the' reinforcement shall be spaced properly with respect to the longitudinal tension bars and that the longitudinal tension bars shall be. held very little danger of the reinforcement becoming detached from the longitudinal tension bars or being accidentally misplaced, .on account of this strong and-secure form of;

connection between thenng; n I 1 7 It fis. gwidentv that my improved tension 7 described herein, as'for example, with Spaced parallel reinforcing bars as used in floor lsjpr arches,' .vvhich forms I have thought unnecessaryito 'shovv' and describe. I "otfvvish to belimited to the particu-' d;above,f-but vvhat 'l claim as my ins "njdz desire" securegbyg Letters 1 Pat-1 ure'sk comprisinga a tension bar ingcomf onvvitlr loopedreinforcement,said-ten having};diametricallyi o positej lon "ribs and transverse ribsi -at inter -1ng providg'd. with-fa" 'thinHflange-V having spaced notches in the edge thereof in which are seateditheloops of said reinforcement, 'said notchesfbeing of such depth that the Jadjacentcorners of said flange overlapthe- *s'pac'ing barcan' be used] with other" urine of reinforcement than that shown and.

'bodiment of my invention shown" and relnforcing unit f0r concrete} sides of the'loops seated therein, said corners being turned in to embrace the loops.

2. A metal reinforcement for concrete structures comprising parallel tension bars having diametrically opposite l ongitudinal ribs and transverse ribs at intervals extending "fronijone longitudinal rib to the other,

withfa' thin flange having spaced notches notches and supported the other,yone" of. .said longitudinal ribs be- I tches' thereinf adapted to receive metal relforcment, said notches being. of such hapeifo'rm corners on the flange, adapt-- retain it in position in the notches.

Signed at St: Louis, Missouri, this 23rd day of January, 1911.

- Witnesses:

A. M. HoLcoMBE, M. A. SHELTON.

therein, -an'd transverse reinforcing elements :vals extending; from one longitudinal rib to.

ingjprovided ;;with a thin. flange I having:

ALFRED LINDAU;

one .ofsaid'longitudinal ribs being provided 1 n I I v 7 "ed tobebent'over-the said reinforcement to" als ext dingjfr om-one longitudinal rib to- *e-.:ather,- oneZ-of' said "longitudinal ribs be- .1

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