US841014A - Reinforcing-bar. - Google Patents

Description

PATENTED JAN. 8, 1907.-

' L. HUNT.

REINPORGING BAR.

APPLICATION FILED JULY 31, 1905.

2 SHEETS-SHEET 1.

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ATTORNEYS $1 mw h W/TM s 55 S LEIGH HUNT, OF IOLA, Iii-INSAS.

NT FICE.

REiNFoRoiNG-BAR.

Specification of Letters Patent.

rateniedqan. 8, 1907.

Appiicaiion iiieii Juiy 31,1905. seriali No. 272,011.

of the United States, residing at Iola, in the county of Allen and State of Kansas, have invented a new and useful Reinforcing-Bar, of which the following is a specification.

This invention relates to certain improvements in reinforcing bars or rods of that general class designed for use in the construction of concrete walls, floors, columns, partitions, and similar artificial-stone structures.

The object ofthe invention is to provide an inexpensive, durable, and efiicient device of this character adapted to be embedded in the cement, concrete, or other material, whereby fthe latterwill be materially strengthened, so as to effectually resist both tensile and shearing strains.

A further object of the invention is to provide a tension bar or rod formed of a plurality of superposed strands or bars of different lengths, said strands or bars being twisted together andhaving -their 'ends extended laterally at any desired angle to the longitudinal plane of the main supporting-rod to form-a series of spaced shearing members.

A still further object is to forni the bar in such a manner as to increase its elastic limit and cement-engaging surface, and, further, to construct the shearing-arms so as to create the highest mechanical bond between the concrete and metal.

I/Vith these and other objects in view the invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings,'and pointed out in the claims hereto, appended, it being understood that various changes in form, proportions, and minor details of construction may be resorted to without departing from the principle or sacrificing any of the-advantages of this invention.

In the accompanying drawings, forming a part of this specification, Figure'l is a side elevation of a reinforcing bar or rod constructed in accordance with niy invention. I* ig. 2 is a top plan view of a portion of one of the shearing arms or anchors. VFig. 3 is a side elevation of a inodilied'form of the invention. Fig. 4 is a similar view oi a modification of Fig. 3, and Figs. 5 and are similar other material.y

responding parts in all the figures of the drawings. l

, In constructing the preferred form of the device shown in Fig. 1 of the drawings I employ a main supporting bar or rod 5, preferably of high tensile strength, and bend the opposite ends thereof at right angles to form terminal anchors or extensions 6. Intercoiled or intertwisted with the main supporting bar or rod 5 are a plurality of superposed auxiliary rods or bars 7, 8, 9, and 10, each auxiliary rod being preferablyformed of two strands of metal or other suitable material 1 1 and 12, the opposite ends of which are bent laterally at any desired angle to the general plane of the main supporting-rod 5 to forni a series of spaced shearing-arms 13, adapted to be embedded in the cement, concrete, or The shearing-arms in this form of the device are disposed in alinement on one-side of the red; but it will be understood that said arms may be positioned on either or both sides of the rod or arranged in staggered relation with their terminal portions inclined toward or away from the center of the rod, as desired.l The ends of the metal strands forming the shearing-arms are preferably kinked orcorrugated 'and arran ed one slightly in advance of the other, as s own, so as to increase their cement-engaging surface, and thereby form a perfect mechanical. bond between the concrete and metal. One strand of each shearing-arm is also bent parallel with the main supportingrod 5 and the end thereof curved to form a terminal hook or loop 14, in whichis centered the end of the adjacent strand. By constructing the reinforcing-bar in this manner the greatest strength is obtained with a minimum of cross-sectionv and weight of metal employed. y

In Fig. 3 of the drawings there is illustrated a modified form of the invention in which the shearing-.arms are straight and the terminal hooks or loops dispensed with, while in Fig. 4 the strands comprising the arms are twisted together and the ends thereof bent laterally, as indicated atff. In Fig. 5 the laterally-extending arms present a smooth continuous vsurface from the main supporting-rod to the -terminal hooks or loops, while in Fig. 6 thel arms are similar to those shown in Fig. 1, with the exception that the strands or bars forming said arms are twisted or coiled around the adjacent convolutions at IlO-.

. Q sensate right angles lto the general planeet the'man 'supportin -rcd before being bent laterally onro bey changed to conforintothe different load .tcenditions `From the foregoingdescription it willbe ends corrugated and extended laterally to v form spacedshearing members.

l, 5. Arei'nforcingbar eornprising a plurality .of intertwisted rods of dierent lengths, said rods being each formed fof a' plurality of strands the ends of which are corrugated and bent 'laterally to forni shearing members.,

6. A reinforcing-.bar comprising e pluralityy oi' iniertwisted rods of different lengths, said' rods being each formed `cfa pair of strands the ends of which `are lcorrugated:fand extend- .l

y' l j inelined shearing members one of therods let 'seen'that there'is-provided -a eo'rnf aratively f "inexpensivejdevice admirably aapted for 125' the attainmentsof lthe ends in View.

Y', 1-Havin thus'described `the invention, what g ffjis'laime is* 'v f- 'theends of which are bent laterally to form j L' Areinforein y#leercomprisinga pliirality shearing members, the end 'ef 4enestrand of rods or strands'ofidiiierentlengths are each 'pair `vteiz'nninatngv a loop` or hook `2c,ranged1in-pairs and twisted together yto form adapted tto'receive the 'end of the adjacent ed laterally toform shearing members.

7. A reinforoingQbar eomprising a plurality a 1 'of inter-twisted rods'of dili'erent lengths, said rods -rbeing 'each formed ef -a 'pair oi' strands 55 'yeachpair being provided. with va terminal f," op adaptedterecleivegthe end of the .adja- `1 l'eentrod '8. *QA reinforcing-bar comprising a main supportingerod having fa plurality of superposeddeuxiliary rods of vdifferent lengths ari 2'5 A -reinforcingeharfeeniprising-a :plnrality io rods or strands et 'different lengths Atwisted 1 :together 'and having 'their .ends extended lat- .erally fand e-rimped yto form -a *seriesA z'of spaced 'corru ated-shearin members :go v 3. 4reinforcin e .ar com risinga/plurality Q nf-rodsor' str-an s ofjdi erent len* the ar- .l rangednin 1 Iairs and "twisterl 'toget er, the ends 'of eat? pair of rodsbeing eXCended lat+ i erally on one side ofthe bar andcrmped to '35 ''orm a series of spacedfeorrugated shearing`-` members.

4. A reinforcing-bar-eoniprising aplnrality 'of suerposed rods erstrands ofdiiferent lengt s' arranged in pairs and twisted toranged siren-and' intertwisted therewith,

vthe ends oV the :anxiary rods being extended laterally in :opposite -fdirections from the cenj ter of the ,malnrod to -form shearing niembers, and' each having one end thereof providedft'w'ith a terminal loop adapted to re-v oeigv'e the endof the adjacent rod.'

4afin testimony that' .I claiml the foregoing as my own I have hereto alixed my signature inthe presenceof two witnesses.l l K y .l Lilien-HUNT. `lNitnessesi I.

L`.A'Sro nn, I.v f; .DA-N' VIFL'LEWAY'

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