US952891A - Reinforcement for concrete construction. - Google Patents

Description

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M J No P CO l NAN J. O. ELLINGER. REINFORCEMENT FOR CONCRETE CONSTRUCTION.

APPLICATION FILED SEPT. 22, 1909.

M w? m @i N? NW L N QNNNRN WN .Q WO U MQ 1. mm L rmatuwm I To all whom time/y concern:

- ing their body ing'to'myinvention. Fig.2 is an end view view-of a Modified form. of bar forming one 'ing to my invention.

sis

. form.. shear members. The-ends ofjeach ,.have invented certain new and useful Imfrom the hereinafter description.

' 11 is a top plan View of said bar with the bar of the frame and 21. and 22 represent the- .upper end-bars. Each of these bars is above JULIAN o. ,ELLINGER,

OF NEW YORK, Y.

REINFORCEMENT r03, ooncnn'rn oons'rnno'rronq p a o q Letters Patent Patented Mar. 22, 1910.

Application filed September-22, 1909. Serial No. 518,944.

l 3e--it known'that I, JULIAN limiters, a cltlzen of the- United States, and a resident of the clty, county, and State of New York,

provements in Reinforcement "for Concrete Construction, of which the following is a specification.

This invention relates to improvements in reinforcements for beams, girders, &c., havcrete or analogous plastic material.

The objects of the invention-will a pear Several embodiments of the i ention are disclosedin the-accompanying, drawing in which the same reference character. indicates the same part in the, several views.

'Referringltogthe drawing: Figure tie a side 'eletrat onof a unit" frame made accordof the same. I Fig. 3 is an end View of a slight modification. Fig. his aside view' of a modified form of stra Fig. 5 is anend View of the. strap Fig. 6 1s an end element of the fra me. Fig. 7 is a top plan View on an enlarged scale of a bar and straps showing the homogeneity of the strap. and bar after they have been'connected accord- Fig. 8 is a\top plan] vicw on an enlarged scale, of a mod fied constructionof bar. Fig. 9 is atop plan .view; showing the strap, connected to such bar. as illustratedin Fig. 8. Fig. 10 is atop plan' view of another modification of bar. Fig.

strapsconnectedthereto. Fig..12'is an end view of a modified construction of'strap or shear member. F igx'l3 is a top plan view showing said strap-or shear member cemnected to such'bar, as shown in Figs. 1, v2, 3 and 6.

The part marked 20 represents the lower the end portion of the lower bar and subends thereof. projecting beyond the, .outer ends of said lower bars. Each ofthsebars erand lower edges thereof fiSzPlfQ- vided w1t longitudinal rlbs or projections which connect theend portionsfofithe lower bar with the inner portlol s of thenp'per bars portions composed of con-./

of these straps are provided with projections I or ribs 25, preferably formed by pressing longitudinal depressions in the bar,said 'projections extending across: and v contacting with the ribs-or projections 23. The straps are alternated on each side of said bars, as mdre clearly shown in Figs. 1. and 2. lVhen the strapshave'been connectedto the longi-' Q tutlinal bars by welding,'the metal forming the projections on the straps"a11d: tliat of the y 'ribs. 23 becomes plastic and under ,pressure is forced together and fermswhat might be termed a solid homogeneous .mass, without any apparent weld, see Fig. The shear value of the weld is directly proportionate to the area of the metal involved and where" the'shear straps are weldedv to the longitudinal bars or tension members, the tension members at these points have increased tensile value and the "elastic limit of'thc tension. bars is increased at these points. The shear value of'the weld for any given size of strap may be increased by increasing the width of the projection or ridge in the strap. That is to say, snppos'e'a one half inch strap using a ridge'of a given area develops five thousand'pounds ultimately in the strap, then by using a three quarter inch strap the shear value of the. weld maybe increasedv to seventy-five hundred pounds, by widening out the ridge,thereby making its area cf contact 'with thiefrizd es on the longitudinal bars or tension inern ers of greater 'valtie. Instead of placing these straps on 'both' sides of the "longitudinal bars, as shown, in Figs. 1' and 2. all the straps may be placed on one side of the bars, as shown in'Fig; 3. Instead of having the ridgeson these straps only at: the edge, the ridges may extend longitudinall throughout the straps for additiona strength, as shown in Flg. 4.

In some constructions instead of providing each side of the longitudinal bars with -'-two ridges, they may be-provided with three ridgesya s' shown in Fig. 6', the middle ridge in such construction being marked 23 and the her being indicated 'by the reference character 20*.

, Instead of p'roviding'the longitudinal bars with projections or ribs 23 throu houttheir I :lefn'gth, Inlay form ridges or pro ecti0ns 23 on. the bars, as shown'in Fig. 8', and only at the-places where the straps or shear members are to be welded thereto. Fig. 9 shows the shape or form of the metal when -the. strapskre connected to such a bar.

jections being weldably united.

Insonie constructions I may provide the longitudinal bars with points 26, as shown in Fig. 10, instead of the ribs 23, for the purpose of welding the straps thereto. In such construction the straps or shear members 24 need not necessarily be provided with projections or ridges 25 at the ends thereof, but may be plain throughout their length. In Fig. 11. is shown the final relation of such a bar and such a strap. In tliis construction the metal forming the points becomes plastic and forms with the metal of the straps when pressed, a homogeneous mass, as appears in said Fig. 11.

In Fig. 12 is shown a strap or shear member-24t made of substantially half round metal, provided with contact projections or ridges 25*. When such a shear member is used the points during the process of welding unite with the ridges 23 and form a homogeneous mass, as is more clearly shown n. Fig. 13.

In constructing a' reinforcing frame as hereinabove described, the shear and longitudi nal members are rigidly connected and the metal of said elements unites so that the metal at the joints is homogeneous.

Certain features of the invention herein described are disclosed in my prior application; Serial No. 503,773, filed June 23, 1909.

Hiiving now described my invention, what I claim as new and desire to secure by Letters Patent isz.

l. reinforcement, for concrete construction,s, comprising lower and upper spaced longitudinal bars having welding projections throughout their length, fiat transverse shear members having welding projections at their ends and in contact with the projections on the' longitudinal bars, said pro- 2. A reinforcement for concrete construction, comprising lower and upper spaced longitudinal bars having on the sides thereof welding projections, transverse shear memhere on each side of said bars, said shear members being provided with welding proteaser j e'ctions at the ends and in contact with the.

projections on the longitudinal bars, said projections being weldably united. 1

3. A reinforcement for concrete construction, comprising lower and upper spaced longitudinal-bars having on the sides thereof welding ridges throughout their length, fiat transverse straps or shear members extending from the lower bar to the upper bar or bars, said straps being provided with'lon i tudinal welding projections or ridges att 6 ends thereof, said ridges contacting with the ridges on the longitudinal bars, and said ridges being weldably connected.

4; A reinforcement for concrete construction, comprising lower and upper longitudinal bars having welding projections, flat transverse members having welding projections in contact with the projections on the longitudinal bars, said projections being, weldably united.

5. A reinforcement for. concrete construction, comprising lower and upper'lon itudinal barshaving welding projections, at; transverse members having one pr, more welding projections in contact withffith e pro jections on the longitudinal barft-lie' said projections being weldably united, the area of the metal in the projections being so'proportioned that the shear value of'the-we-ld is directly proportioned to said area.

6. In a reinforcement for concrete "construction, longitudinal bars forming tension members having welding projections-on the sides thereof, and a series of straps forming shear members, the free end of each strap being provided with welding pro jections, the saidstraps at the free ends being weldably connected to the longitudinal bars to form. a homogeneousconstruction.

In witness whereof I have hereunto set I my hand at the city, county and State of New York. this 21st 'day of September, 1909.

. JULIAN O. ELLINGER. In presence of .ISABEL R, RICHARDS, 'Jos. J. RANAGAN.

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