US1652431A - Concrete column - Google Patents

Description

Dec. 13, 1927. 1,652,431

R. S. ELLIS CONCRETE COLUMN Filed May 23, 1925 LFJGZ 5: 2 12 49 I I I 232 FIG: I. 8; Z20 '1; L fig: 20 I L J g4 13 m: v 1 V v 7% I 1 %7 5 Russzu. Jcorrlus,

Patented Dec. 13, .1927.

EUs'sELL 'sco'rr EL is, EPHIL ELPHI PENNSY ANIA.

'' CONCRETE ooLUMN.

' My invention relates to reinforced eoncrete structures.especially adapted for suplportin electricalfconducting wires, lamps,

etc. .perienced in attempting to form reinforced concrete columns for-such purposes. O rdi .narily, columns for such purposes have metallicmembers which are partially imbedded therein and projecttherefrom as means for; attachment of the wires or other articles I which the column I is designedto support.. However, upon exposure *to. the weather, such prior art structures 'tend to split, disintegrate and collapse as the result of progres sive corrosion f the mbedded metallic reinforcements. .Uponxexposureto the weather,

the projecting portions of the metallic 111631 1 Q I view of the precast cap and subadjacent porbers aforesaid corrode, the corrosion extends into the concrete mass-with such enlarg ment of the'metallic members by oxidation thereof as'to split and otherwise disrupt the concrete. Moreover, I find that ordinarily concrete is so porous and permeable by moisture that unless approximately two inches thickness of concrete isprovided exterior to such metalreinforcements, the latter become corroded by moisture which percolates through the concrete so. that the latter is 'disrupted by th expansion ofathe oxidizing metal therein. 7 I

Therefore, the purpose and eifect'of my in vention' is to provide a reinforced concrete column free from the defects aforesaid in that themetal reinforcementsare so located as to remain practically; free from corrosion,

and to provide meansfor preventing splitting of the columns, and to aiford means for detachably securing wires or otherstruc tures which the columnis designed to; support, without permitting any metal member to project through the outer surfaceofthe concrete. I

As hereinafter described, myinvention includes a monolith havingnn unbroken texterior concrete surface and having metallic reinforcements, extending longitudinally therein, spaced so far from the exterior surface as'to beimmune from corrosion; said concrete structure being encircledby exterior;

ductors orotherlapparatus aforesaid. T r

invention includesthe var ous novel 1 onsiderabledifliculty has been eX-' Application filed May 23, 1325. Serial No. 32,324.

features of. construction and arrangement hereinafter vmore definitely specified. However,-my copending application (7P2?) Se- .rial No. 1%,307, filed May 26, 1927 for LettersPatent of the United States, "includes claims covering columns suchas disclosed herein. t

In said drawings; Fig. I is an elevationof a' conc'rete column designed and adapted'for use as a support for telegraphflelephone or other electric conducting wires.

Fig. II is a ertical sectional'v ew of said structure taken on the line ILII" in Fig. I. Fig. III is a. fragmentary transverse sectional view of said structure taken on the lin'e III, III in Fig. .II, but on a larger scale.

F ig. IV is a fragmentary vertical sectional tion of the monolith integrated therewith;

on the same scale as'Fig. II.

Fig. Vis a fragmentary vertical section of the precast base and superimposed portioniof'the monolith'integratedtherewith; V

on the same scale as FigsIII and IV.

Fig. VI is an elevation, on a smaller scale,

showing the column structure of Figs. 1, and

broken by any .nietal projecting there through; but containing a congeries of lonjgitudinally extending metallic reinforcements2 which are imbedded therein in such spaced relation to the outer surface thereof as to be immune from percolation of mois- 'tuie under-ordinary-conditions of exposure to'the weather. As best shown in Fig. III; said: monolith: l is of rectangular cross secfition and said reinforcements 2 are disposed therein lli symmetrical P61311011, with the .axis thereof. Such relation of the reinforc- .5 withrecessed. seats in which the concrete aggregate of the monolith 1 is integrally interlocked in any suitable manner; for in stance, as in Figs. IV and ,V and by the method and means claimed in my copen'ding application Serial No. 11,419 for Letters Patent of the United States, No. 1,563,615. granted December :1, 19.2.5

ill

As shown; each ol'psaid column end members 4: and 5 has its outer lace pointed in quadrangular pyramid form audits inner face plane with an axial recess, of circular and curved configuration, extianling into it from its plane :l'ace, in coaxial relation therewith and surrounded by an annular series ot recessed reinforcement seats, and

inch of the metallic reinforcen'ient rods extends from one of the recess seats in said cap I to one of the seats in said base 5; so that when said monolith column body 1 is cast, it extends into and interlockswith the axial undercut recesses in said endmemhers and imbeds said reinforcement rods 2 so that they are spaced in *a-rdly from the outer tace oi. said column to such extent asto be protected from corrosion from exterior moisture. As shown; I prefer to make said base 5 ct cross sectional area larger than said cap 4 and to taper said column body 1 from said base to said cap.

To facilitate the cliniliiing ol' the prior art structures aforesaid, they are ordinari lyprovided with metal studs which project therefrom and are inibedded therein, spaced in a vertical series, and such elements tend to split the concrete as aforesaid. lherei'ore, I preferto provide said monolith 1. with vertical series of pockets 7, so spaced upon diametrically opposite sides thereof that they may be readily engaged by climbing spurs clamped upon the feet of a lineman. As indicated in FighII, I prefer to make the lower walls of said pockets undercut for greater security of engagement by said spurs. As shown in Fig. I, each of said pockets 7 is preferably made of triangular configuration, the transversely opposite sides thereof being downwardly converged and, asshown in Fig. II, each of said pockets has its inner end nearer to the base of the column than its outer end; so that said footholds 7 are thus adapted to readily re ceive and securely inter-engage with an on dinary linemans climbing spur. However, they may be otherwise formed and an anged.

ing any sin t- To ailord mcansl'or eng 4 able supcrstructure which said column is designed tosupport or by which it is adapt ed to support something else,- I provide said monolith 1 with a. plurality of encircling hands 8 which, as best shown in Fig. I], are mounted in annular recesses 9 ol the exterior oi. the concrete l. Said bands SIIHXV be (d any com'enient 'l'orm and unitary. However, I prefer to make them of the form shown in Fig. III wherein the band 8 is formed of two oppositely counterpart sections connected by bolts 10 and nuts 11.

Such separable construction and arrangement is preferable, so that the bands may be readily replaced if they are broken. As shown in Fig. III; each section of said band 8 is provided with laterally extend ing lugs 13 to which coupling beams 14,

which connect said bands 8, are rigidly connected by bolts us and nuts 17. As shown in l igs. l and ll. said. coupling beams 14 serve to support the cross beams 19 and 20 which are eonwniently attached thereto by be1- sinierstruclme com prising the beams 14.

it) andQti, and carrying, in lieu thereof, the horizontally extending strut arm 22 connected to the lower band 8 and having the tension. rod extending from the upper band 8 to the outer end of said strut where the electric lamp 25 is suspended.

Therefore, Ido not desire to limit myself to the precise detailsof construction and ar' rangement herein set forth, as itv is obvious that various modifications may be made therein without departing from the essential features oil? my invention,; as defined in the appendedclaims.

I claim: i

1. In a concrete column, the combination with a precast concrete and primarily separate cap meinbon having a quadrangular pyramid top and a square base with a plane face and an axial undercut recess extending into said caprlrom said base, and a series or recessed reinforcement seats extending into said cap from said base in an annular series in coaxial rclatioi'i therewith; of a precast concrete and primarily separate base memher having a..quadraugular pyramid bottom and a. square top with a plane taco and an axial u1uler=,-ut recess extending] into said base nieiinher from said lace. and marries ot' rereseeil reini'orccuu-nt seats extending into said base member from said face in an aunular series in coaxial relation therewith: aw

wricu of inelaliic reintorcement rods each extending from one of the seats in said cap to one oi the seals in said base; whereby said reinforcements are spaced imvardly from the outer surface of said column to such extent as to be protected from corrosion from exterior moisture; and a monolith body of concrete cast. in integral connection with said cap and basemembers, extending into aiulinterlocking with the undercut re ceases thereof and imbeddingsaid reinforcement rods; said cap being of smaller cross sectional area than said base, and said body being of quadrangular cross section, tapered from said base'to said cap;

2; In a concrete column, the combination with a precast concrete and primarily separate cap member having a pointedtop and a plane bottom face and an axial undercutre--- cess extending into said cap from said face, and a series of recessed reinforcement seats extending into said cap from said face in an: annular series in coaxial relation therewith;

of a precast concrete and primarily separate base member having apointedbottom and a plane top face and an. axial undercut recess extending into said base member from said' face, and a series of recessed reinforcement seats extending into said base member from said face in an annular series in coaxial relation therewith; a series of metallic reinforcement rods each extending from one ofthe seats in said cap to oneof the seats in said base; whereby said reinforcements are spaced inwardly from the outer surface of said column to such extent as to be protected from corrosion from exterior moisture; and a monolith body of concrete cast m ntegral connection with said cap and base members, extending into and interlocking with the undercut recesses thereof and im bedding said reinforcement rods; said cap being of smaller cross sectional area'than saidvbase, and said body being tapered from said base to said cap, V i J 3. In a concrete column, the combination with a precast and primarily separate cap member having a quadrangular pyramid top and a square base with a plane face and an axial undercut recess extending into said cap from said base, and a series of recessed reinforcement seats extending into said cap from said base inan annular series in coaxial relation therewith; of a precastand primarily separate base member having'a quadrangular pyramid bottom anda square top with a plane face and an axial undercut recess extending into said base member from said facefand a series of recessed reinforcement seats extending into said base member from said face in an annular series in coaxial relation therewith; a series of'metallic reinforcement rods each extending from one of the seats in said cap to one of the. seats in said base; whereby said'reinforcements are spaced inwardly from the outer surface ofsaid column to such extent as to be protected from corrosion from exterior moisture; and a monolith body of concrete cast in integral connection with said cap and base members, extending into and interlocking with the undercut recesses thereof and imbedding said reinforcement rods; a

.4. In a concrete column, the'combination with a precast concrete'and primarily separate cap member having an'axial undercut annular series in coaxial direction therewith; of a precast concrete amd primarily separate base inemberhaving an axial undercut recess extending into said basemenr .65 recess extending into said cap from its bottom, and recessed reinforcement seats extending into sa1d cap from its bottom in an her from its top, and recessed reinforcement rseatsextending into said base member from its top in an annular series in coaxial relation therewith; a series of metallic reinforcement'rods each extending from one of the seats in said cap to one of the seats in said base; whereby said reinforcements are symmetrically spaced inwardly from the outer s rface ofsaid column; and a monolith body of concrete cast in integral connection with said cap and base members, extending into and interlocking with the undercut recesses thereof and imbedding said reinforcement rods. x i r 5. A precast concrete end member for a concrete column, having a quadrangular pyramidal outer face and a plane inner face,

an axial undercut recess of symmetrical 'plane'inner face, an axial undercut recess of symmetrical curved configuration extending into said member from said plane face, in coaxial relation therew1th,'and an annular series of recessed reinforcement seats ex tending nto said member from said plane face, in coaxial relation therewith.

7. A precastend member for a concrete column, having a pointed outer face and an axial undercut recess extending into said member from its inner face, and an annular series of recessed reinforcement seats ex tending into said member from said plane face,'in coaxial relation therewith.

In testimony whereof, I have hereunto signed my. name at Philadelphia, Pennsyl eighteenth day of May, 1925. RUSSELL SCOTT ELLIS.

Vania, this GERTIF I GATE 0F CORRECTMN.

Patent Nee l,652,431. @Eial'ifid Becember 13, 1927, to

RUSSELL SCOTT ELLIS.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring cor v rection as foliows: Page 1, line 102, for the Word "percas t" read "precast"- same page, line 103, strike out the words "recessed seats in" and insert the same to follow after th WOEd "with" 1M; and that the said Letters Patent should be read with th therein that the same may conform Sigeed and sealed this 10th day of January, A. D, 1928 M. J. Meore, Seal. Acting Commissioner of Patents.

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